• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

ATI 4890 problem!

mgs-snake

New Member
Joined
Jun 23, 2010
Messages
11 (0.00/day)
hey guyz hows everything? :)

well! let's get to the point.. my friend owns a desktop pc with the following specs:

AMD Athlon II X3 Processor
ECS A750GM-M MOBO
2GB DDR3 Memory
and recently bought an ATI Radeon HD 4890 graphic card...

the problem is that whenever he tries to play a video game, everything seems just fine in the first 10 minutes but after that the computer reboots automatically!
he's tried to update the driver of the card, but no avail! :(
has this anything to do with the compatibility of the card with the MOBO?

any ideas?

thanks ;)
 

Catalyst

New Member
Joined
Jun 27, 2010
Messages
15 (0.00/day)
Location
Finland
System Name Catalyst-PC
Processor AMD Phenom II X3 720
Motherboard Asus M4A785D-M Pro
Cooling Zalman CNPS9700 LED
Memory Corsair 6 GB DDR2-800
Video Card(s) Asus Radeon HD6950 DirectCu II
Storage Samsung Spinpoint F3 2 TB
Display(s) BenQ G2420HD
Case Antec P180 Mini
Audio Device(s) Via HD Audio
Power Supply XFX 550 W Core Edition
Software Windows 7 Ultimate x64
Check the temp on the card.
Look for dust in the cooler/fan.

If it has stock cooling, consider buying a 3rd-party solution.

Edit: Oh and while I'm at it, what kind of PSU is he using?
Model/make?
 
Joined
Dec 27, 2007
Messages
8,518 (1.43/day)
Location
Kansas City
System Name The Dove Box Rev 3.0
Processor i7 8700k @ 4.7GHz
Motherboard Asus Maximus X APEX
Cooling Custom water loop
Memory 16GB 3600 MHz DDR4
Video Card(s) 2x MSI 780 Ti's in SLI
Storage 500GB Samsung 850 PCIe SSD, 4TB
Display(s) 27" Asus 144Hz
Case Enermax Fulmo GT
Audio Device(s) ON BOARD FTW
Power Supply Corsair 1200W
Keyboard Logitech G510
Software Win 10 64x
Does this happen with every game?

I would run FurMark and check temps to see if they are good. Also what power supply is he running? Should be at least a 450W.
 
Joined
Mar 21, 2009
Messages
262 (0.05/day)
System Name Matt's Special
Processor AMD Phenom II X4 965 Black Edition AM3 3.4 GHz
Motherboard ASUS M4N72-E SLI
Cooling Zalman CNPS9900A-LED PWM
Memory Corsair Dominator XMS2 4GB (2X2GB) DDR2 1066 MHz Dual-Channel Kit
Video Card(s) Sapphire Radeon HD 4890 Vapor-X 1GB GDDR5
Storage Samsung SpinPoint F3 1TB 7200RPM
Display(s) Samsung SyncMaster P2070 20" 1600x900 LCD Monitor
Case Thermaltake WinGo V7000
Audio Device(s) VIA High Definition Audio
Power Supply OCZ StealthXStream 600W
Software Windows 7 Ultimate 64-Bit
It's either the PSU cutting off because there is not enough power of amps on the 12V to power the card or the card is running at high temps causing the reboot so it doesn't carry on heating up and damaging the card.
 
Joined
Jan 19, 2008
Messages
326 (0.06/day)
Location
Planet Earth
System Name V I K I N G
Processor Intel Core i5 11400F
Motherboard Gigabyte AORUS Z590 PRO AX
Cooling Corsair iCUE H100i RGB PRO XT + Corsair Commander PRO + Corsair QL 120 x 3 + Node Pro
Memory 16 GB / Corsair VENGEANCE RGB PRO SL @ 3200Mhz
Video Card(s) Gigabyte AORUS ELITE RTX 3060 12GB
Storage 500GB WesternDigital BLACK PCI Gen 4 M.2 NVMe
Display(s) AOC 27" 144Hz Monitor AGON G2 series
Case Corsair iCUE 4000D
Audio Device(s) ASUS ROG Delta S Quad DAC Hi-Res Audio + Samsung 300W modded Home teather speakers
Power Supply Thermaltake Thoughpower Grand 750W RGB 80 Plus GOLD
Mouse Corsair SABRE RGP PRO Champion series
Keyboard Corsair K70 TKL Champion series
Software Windows 11 PRO X64
sure it´s the PSU, go and tell your buddy to afford a new one, i recommend 550W or greater PSU for that VidCard and Processor...
 

Cheeseball

Not a Potato
Supporter
Joined
Jan 2, 2009
Messages
1,834 (0.33/day)
Location
Pittsburgh, PA
System Name 2023 AMD Work & Gaming Rig
Processor AMD Ryzen™ 7 7950X3D
Motherboard ASUS ROG Strix X670E-I Gaming WiFi
Cooling ID-COOLING SE-207-XT Slim Snow
Memory TEAMGROUP T-Force Delta RGB 2x16GB DDR5-6000 CL30
Video Card(s) ASRock Radeon RX 7900 XTX 24 GB GDDR6 (MBA)
Storage 2TB Samsung 990 Pro NVMe
Display(s) AOpen Fire Legend 24" 390Hz (25XV2Q), Alienware 34" 165Hz (AW3423DWF), LG C2 42" 120Hz (OLED42C2PUA)
Case Cooler Master Q300L V2
Audio Device(s) Kanto Audio YU2 and SUB8 Desktop Speakers and Subwoofer, Cloud Alpha Wireless
Power Supply Corsair RM850x White (2021)
Mouse Logitech Pro Superlight (White), G303 Shroud Edition
Keyboard Corsair K70 RGB TKL Champion Series / Wooting 60HE / NuPhy Air75
VR HMD Occulus Quest 2 128GB
Software Windows 11 Pro 64-bit 22H2 Build 22621.1992
If the PC just restarts randomly during load or after a fixed amount of time (e.g. 10 minutes, like you said), it's most likely the power supply not being to take the stress. If you're using a generic/cheap PSU, that HD 4890 is going to overload it.
 
Joined
Jan 19, 2008
Messages
326 (0.06/day)
Location
Planet Earth
System Name V I K I N G
Processor Intel Core i5 11400F
Motherboard Gigabyte AORUS Z590 PRO AX
Cooling Corsair iCUE H100i RGB PRO XT + Corsair Commander PRO + Corsair QL 120 x 3 + Node Pro
Memory 16 GB / Corsair VENGEANCE RGB PRO SL @ 3200Mhz
Video Card(s) Gigabyte AORUS ELITE RTX 3060 12GB
Storage 500GB WesternDigital BLACK PCI Gen 4 M.2 NVMe
Display(s) AOC 27" 144Hz Monitor AGON G2 series
Case Corsair iCUE 4000D
Audio Device(s) ASUS ROG Delta S Quad DAC Hi-Res Audio + Samsung 300W modded Home teather speakers
Power Supply Thermaltake Thoughpower Grand 750W RGB 80 Plus GOLD
Mouse Corsair SABRE RGP PRO Champion series
Keyboard Corsair K70 TKL Champion series
Software Windows 11 PRO X64
oh, and dont forget to look into the PSU Amperage, it´s better to have 40 amps or greater for that vidcard to handle it fine ;)
 

mgs-snake

New Member
Joined
Jun 23, 2010
Messages
11 (0.00/day)
I have checked the temp and got 80C.. i installed an extra fan on the card, rechecked the temp and got 55C... but still have the same problem! :(

he's actually using a good AcBel 510W PSU!

Does this happen with every game?

yes :(
 
Joined
Oct 19, 2008
Messages
3,159 (0.56/day)
System Name White Theme
Processor Intel 12700K CPU
Motherboard ASUS STRIX Z690-A D4
Cooling Lian Li Galahad Uni w/ AL120 Fans
Memory 32GB DDR4-3200 Corsair Vengeance
Video Card(s) Gigabyte Aero 4080 Super 16GB
Storage 2TB Samsung 980 Pro PCIE 4.0
Display(s) Alienware 38" 3840x1600 (165Hz)
Case Lian Li O11 Dynamic EVO White
Audio Device(s) 2i2 Scarlett Solo + Schiit Magni 3 AMP
Power Supply Corsair HX 1000 Platinum
If the card can run on the mobo as you've said for 10 minutes then its compatible obviously since it wouldn't run at all if it wasn't.

Secondly if your comp is just restarting no BSOD or error messages then I would highly agree with the others, change your PSU, I've never heard of an AcBel brand so I'll assume its generic
 

Tatty_Two

Gone Fishing
Joined
Jan 18, 2006
Messages
25,793 (3.88/day)
Location
Worcestershire, UK
Processor Rocket Lake Core i5 11600K @ 5 Ghz with PL tweaks
Motherboard MSI MAG Z490 TOMAHAWK
Cooling Thermalright Peerless Assassin 120SE + 4 Phanteks 140mm case fans
Memory 32GB (4 x 8GB SR) Patriot Viper Steel 4133Mhz DDR4 @ 3600Mhz CL14@1.45v Gear 1
Video Card(s) Asus Dual RTX 4070 OC
Storage WD Blue SN550 1TB M.2 NVME//Crucial MX500 500GB SSD (OS)
Display(s) AOC Q2781PQ 27 inch Ultra Slim 2560 x 1440 IPS
Case Phanteks Enthoo Pro M Windowed - Gunmetal
Audio Device(s) Onboard Realtek ALC1200/SPDIF to Sony AVR @ 5.1
Power Supply Seasonic CORE GM650w Gold Semi modular
Mouse Coolermaster Storm Octane wired
Keyboard Element Gaming Carbon Mk2 Tournament Mech
Software Win 10 Home x64
I have checked the temp and got 80C.. i installed an extra fan on the card, rechecked the temp and got 55C... but still have the same problem! :(

he's actually using a good AcBel 510W PSU!



yes :(

Don't put too much faith on the wattage, what is the amperage of the unit?

Edit: A little research tells me it's either 17 or 18A on dual rails dependant on model, so lets go with 34A in total, thats at peak power (assumption), now you have to next take into account the efficiency rating of the PSU and make deductions there and we might be talking say 28A for a new unit, whilst it will operate at peak, it won't for prolonged periods. To consolidate that.... 12V x 34A = 489.6W real ....I would hazard a guess that is cutting it fine, the card draws around 227W max (at stock speeds) which translates into about 19A, unless your PSU can "rail switch" then there is your answer. hope that makes sense...... I lost myself somewhere during that lot! :)
 
Last edited:
Joined
Apr 8, 2009
Messages
3,016 (0.55/day)
Location
vermont
System Name The wifes worst enemy
Processor i5-9600k
Motherboard Asrock z390 phantom gaming 4
Cooling water
Memory 16gb G.skill ripjaw DDR4 2400 4X4GB 15-15-15-35-2T
Video Card(s) Asrock 5600xt phantom gaming 6gb 14gb/s
Storage crucial M500 120GB SSD, Pny 256GB SSD, seagate 750GB, seagate 2TB HDD, WD blue 1TB 2.5" HDD
Display(s) 27 inch samsung @ 1080p but capable of much more ;)
Case Corsair AIR 540 Cube Mid tower
Audio Device(s) onboard
Power Supply EVGA GQ1000W MODULAR
Mouse generic for now
Keyboard generic for now
Software gotta love steam, origin etc etc
Benchmark Scores http://hwbot.org/user/philbrown_23/
its the psu for sure, there is no such thing as a "good" acbel psu m8

edit where did you buy it?? what brand is the card etc
 
Joined
Mar 17, 2008
Messages
652 (0.11/day)
Location
Bay Shore NY
System Name BACKTOTHEFUTURE
Processor Stock I7 920
Motherboard Gigabyte GA-EX58-DS4 BIOS F6
Cooling 4 120mm 1 140mm top fan
Memory 12 gigabytes of DDR3 1333 RAM
Video Card(s) EVGA GTX 780ti
Storage Samsung 1.5 terrabyte Steam Drive and 2 Samsung 750 gig Sata 2 in Raid 0
Display(s) HP LP3065 30" Monitor
Case Antec Three Hundred
Audio Device(s) Asus Xonar DS
Power Supply Solid Gear Neutron 750 watt
Software Windows Vista Ultimate 64 bit
What about RAM?

hey guyz hows everything? :)

well! let's get to the point.. my friend owns a desktop pc with the following specs:

AMD Athlon II X3 Processor
ECS A750GM-M MOBO
2GB DDR3 Memory
and recently bought an ATI Radeon HD 4890 graphic card...

the problem is that whenever he tries to play a video game, everything seems just fine in the first 10 minutes but after that the computer reboots automatically!
he's tried to update the driver of the card, but no avail! :(
has this anything to do with the compatibility of the card with the MOBO?

any ideas?

thanks ;)

Is he running a 32 bit or 64 bit operating system. You see a 1 gig video card in a 32 bit operating system is going to eat so much of your available RAM that instability is more likely. In fact a 1 gig video card can eat as much as 2 gigs of System RAM in a 32 bit operating system in a DirectX 9 application. All 4890s are 1 gig. I myself would add more system RAM especially if you are running 32 bit. I highly recommend having 4 gigs so you get to use either 3 or less depending on your config in 32 bit. What operating system is it?

Another thing is that if power were an issue I think you might actually see something on the screen that might warn you. I tried to use a 4890 on an Antec Neopower 500 watt power supply that had 3 rails of 17 amps each and that wasn't enough and that is rated at 500 watts continuous. I started a game and the screen just turned gray and I gave up. Try running the various benchmarks available here at TPU like Resident Evil 5. Try running in DirectX 10 if you can. If you can run in DirectX 10 and stay stable but can't stay stable in DirectX 9 my guess would be that you were running out of RAM in DirectX 9 since you don't lose as much system RAM with video RAM shadowing. There is a great thread about video memory and its interaction with system RAM here at TPU.

http://forums.techpowerup.com/showthread.php?t=91260




Here is a link to the power supply I tried and failed with so don't expect to run a 4890 on it.
Antec Neo Power 500 500W ATX12V SLI Certified Cros...
 
Joined
Apr 2, 2009
Messages
582 (0.11/day)
System Name Flow
Processor AMD Phenom II 955 BE
Motherboard MSI 790fx GD70
Cooling Water
Memory 8gb Crucial Ballistix Tracer Blue ddr3 1600 c8
Video Card(s) 2 x XFX 6850 - Yet to go under water.
Storage Corsair s128
Display(s) HP 24" 1920x1200
Case Custom Lian-Li V2110b
Audio Device(s) Auzentech X-Fi Forte 7.1
Power Supply Corsair 850HX
Is he running a 32 bit or 64 bit operating system. You see a 1 gig video card in a 32 bit operating system is going to eat so much of your available RAM that instability is more likely. In fact a 1 gig video card can eat as much as 2 gigs of System RAM in a 32 bit operating system in a DirectX 9 application. All 4890s are 1 gig. I myself would add more system RAM especially if you are running 32 bit. I highly recommend having 4 gigs so you get to use either 3 or less depending on your config in 32 bit. What operating system is it?

thats not right, you have it backwards. the max addressable is 4 gig but having less system ram than 4gig and then a 1 gig video card does not subtract from the addressable 2 gigs system ram.

EDIT: now I see i am arguing with what is considered to be a reputable "fact" here on this board, and while I am not saying I am 100% right I really dont think that is how the situation of a 2gb ram 1gb VGA plays out.
 
Joined
Mar 17, 2008
Messages
652 (0.11/day)
Location
Bay Shore NY
System Name BACKTOTHEFUTURE
Processor Stock I7 920
Motherboard Gigabyte GA-EX58-DS4 BIOS F6
Cooling 4 120mm 1 140mm top fan
Memory 12 gigabytes of DDR3 1333 RAM
Video Card(s) EVGA GTX 780ti
Storage Samsung 1.5 terrabyte Steam Drive and 2 Samsung 750 gig Sata 2 in Raid 0
Display(s) HP LP3065 30" Monitor
Case Antec Three Hundred
Audio Device(s) Asus Xonar DS
Power Supply Solid Gear Neutron 750 watt
Software Windows Vista Ultimate 64 bit
I Found Some Info About the PSU being used

http://www.xbitlabs.com/articles/cases/display/atx-psu9.html

I'll leave it to better men to explain why this might not be able to run a 4890 but today you can get power supplies with so much more juice on the 12v rails. It certainly might be possible that the video card is just not getting enough amps. It has only 2 18amp 12v rails.

I just bought this HEC $600 watt continuously rated power supply for only $39.99 at Newegg.

hec X-Power Pro 600 600W Continuous @ 40°C ATX12V ...

That has a 30 amp 12v rail and a 22 amp 12v rail. I'll test it out today with a 3870 X2. It should be able to run a 4890 as well so all is not lost if the power supply is the issue. It can be replaced at a low cost.
 

FreedomEclipse

~Technological Technocrat~
Joined
Apr 20, 2007
Messages
23,310 (3.77/day)
Location
London,UK
System Name Codename: Icarus Mk.VI
Processor Intel 8600k@Stock -- pending tuning
Motherboard Asus ROG Strixx Z370-F
Cooling CPU: BeQuiet! Dark Rock Pro 4 {1xCorsair ML120 Pro|5xML140 Pro}
Memory 32GB XPG Gammix D10 {2x16GB}
Video Card(s) ASUS Dual Radeon™ RX 6700 XT OC Edition
Storage Samsung 970 Evo 512GB SSD (Boot)|WD SN770 (Gaming)|2x 3TB Toshiba DT01ACA300|2x 2TB Crucial BX500
Display(s) LG GP850-B
Case Corsair 760T (White)
Audio Device(s) Yamaha RX-V573|Speakers: JBL Control One|Auna 300-CN|Wharfedale Diamond SW150
Power Supply Corsair AX760
Mouse Logitech G900
Keyboard Duckyshine Dead LED(s) III
Software Windows 10 Pro
Benchmark Scores (ノಠ益ಠ)ノ彡┻━┻
<snip>if the power supply is the issue. It can be replaced at a low cost.

its never a good idea to buy 'low cost' power supplies. buying a PSU is an investment & more well known brands such as Corsair Or Enermax might be more expensive then other manufacturers but at least its a name you can trust that makes quality PSUs -

If it costs a bit more money to get a decent powersupply - dont cut corners,
 

Tatty_Two

Gone Fishing
Joined
Jan 18, 2006
Messages
25,793 (3.88/day)
Location
Worcestershire, UK
Processor Rocket Lake Core i5 11600K @ 5 Ghz with PL tweaks
Motherboard MSI MAG Z490 TOMAHAWK
Cooling Thermalright Peerless Assassin 120SE + 4 Phanteks 140mm case fans
Memory 32GB (4 x 8GB SR) Patriot Viper Steel 4133Mhz DDR4 @ 3600Mhz CL14@1.45v Gear 1
Video Card(s) Asus Dual RTX 4070 OC
Storage WD Blue SN550 1TB M.2 NVME//Crucial MX500 500GB SSD (OS)
Display(s) AOC Q2781PQ 27 inch Ultra Slim 2560 x 1440 IPS
Case Phanteks Enthoo Pro M Windowed - Gunmetal
Audio Device(s) Onboard Realtek ALC1200/SPDIF to Sony AVR @ 5.1
Power Supply Seasonic CORE GM650w Gold Semi modular
Mouse Coolermaster Storm Octane wired
Keyboard Element Gaming Carbon Mk2 Tournament Mech
Software Win 10 Home x64
http://www.xbitlabs.com/articles/cases/display/atx-psu9.html

I'll leave it to better men to explain why this might not be able to run a 4890 but today you can get power supplies with so much more juice on the 12v rails. It certainly might be possible that the video card is just not getting enough amps. It has only 2 18amp 12v rails.

I just bought this HEC $600 watt continuously rated power supply for only $39.99 at Newegg.

hec X-Power Pro 600 600W Continuous @ 40°C ATX12V ...

That has a 30 amp 12v rail and a 22 amp 12v rail. I'll test it out today with a 3870 X2. It should be able to run a 4890 as well so all is not lost if the power supply is the issue. It can be replaced at a low cost.

Say what? 12V x 52A = 624W, unless my maths is bad, thats neither continous or takes into account efficiency.
 
Joined
Mar 17, 2008
Messages
652 (0.11/day)
Location
Bay Shore NY
System Name BACKTOTHEFUTURE
Processor Stock I7 920
Motherboard Gigabyte GA-EX58-DS4 BIOS F6
Cooling 4 120mm 1 140mm top fan
Memory 12 gigabytes of DDR3 1333 RAM
Video Card(s) EVGA GTX 780ti
Storage Samsung 1.5 terrabyte Steam Drive and 2 Samsung 750 gig Sata 2 in Raid 0
Display(s) HP LP3065 30" Monitor
Case Antec Three Hundred
Audio Device(s) Asus Xonar DS
Power Supply Solid Gear Neutron 750 watt
Software Windows Vista Ultimate 64 bit
For myself....

its never a good idea to buy 'low cost' power supplies. buying a PSU is an investment & more well known brands such as Corsair Or Enermax might be more expensive then other manufacturers but at least its a name you can trust that makes quality PSUs -

If it costs a bit more money to get a decent powersupply - dont cut corners,

I like to take chances for PCs that are more of an experiment and not the main PC that you don't want to lose. But I've used various vendors and have had very little problems with companies such as Rosewill, Coolmax, and Xclio. I use a Rosewill 850 watt power supply for my main I7 rig that is listed in my System specs. My Xclio 1000 watt supply has been powering as much as near 600 watts without a problem. Just because they are not Corsair or Antec doesn't mean that they are garbage.

Companies I will stay away from are Xion as I did not like the one power supply I tried as it ran way hot and Apevia whose 1100 watt Warlock died in about 3 days. (It didn't damage any of my components; it went quietly)

It is up to the consumer to decide. If you want the best and most reliable you pay for it. I like Antec when it comes to I know damn well it is going to work. (I have both the Truepower 850 watt and 1000 watt models) I discovered the Rosewill models by testing them out and have had nothing but success. I buy just about everything from Newegg.

I just report the news. If you are strapped for cash there are other low cost power supplies that will run a 4890 and not explode. :)
 
Joined
Mar 17, 2008
Messages
652 (0.11/day)
Location
Bay Shore NY
System Name BACKTOTHEFUTURE
Processor Stock I7 920
Motherboard Gigabyte GA-EX58-DS4 BIOS F6
Cooling 4 120mm 1 140mm top fan
Memory 12 gigabytes of DDR3 1333 RAM
Video Card(s) EVGA GTX 780ti
Storage Samsung 1.5 terrabyte Steam Drive and 2 Samsung 750 gig Sata 2 in Raid 0
Display(s) HP LP3065 30" Monitor
Case Antec Three Hundred
Audio Device(s) Asus Xonar DS
Power Supply Solid Gear Neutron 750 watt
Software Windows Vista Ultimate 64 bit
Does it really matter?

Say what? 12V x 52A = 624W, unless my maths is bad, thats neither continous or takes into account efficiency.

If a PSU says 600 watts you should never really expect to actually push it to that limit and not wind up roasting weiners over a warm fire.

Seriously I think it is not saying that you can use 52 amps at once. All that is saying is that one rail can handle 30 amps and the other 22. Not that both can handle that at one time. There are PSUs that have like 6 30 amp rails and they are not 2000 watt models. :toast:
 
Joined
Apr 29, 2008
Messages
346 (0.06/day)
Location
Manchester, UK
Processor i7 920 D0 @ 3.2Ghz 0.95V / 4.45Ghz @ 1.35V
Motherboard Gigabyte EX58-UD3R
Cooling Xig s1283 with Push/Pull Fans
Memory 6GB Corsair XMS3 1600mhz
Video Card(s) HIS 6950 2GB @ 950/1300
Storage Samsung F3 500
Display(s) 24" Acer V243HLmb LED
Case CM690 modded for airflow
Audio Device(s) Xonar D1 -> Marantz CR502 -> B&W 686 + RSW12
Power Supply PC Power & Cooling Silencer 750
Software Win7 x64 Home Premium
Benchmark Scores SP1M - 10s AQM - 202,200 marks w/ 8800gs + E7300 3D '06 - 26,000 4890+4870
PSU or GPU overheat. Try a better PSU to rule that out, but it's more than likely that.
 

newtekie1

Semi-Retired Folder
Joined
Nov 22, 2005
Messages
28,472 (4.25/day)
Location
Indiana, USA
Processor Intel Core i7 10850K@5.2GHz
Motherboard AsRock Z470 Taichi
Cooling Corsair H115i Pro w/ Noctua NF-A14 Fans
Memory 32GB DDR4-3600
Video Card(s) RTX 2070 Super
Storage 500GB SX8200 Pro + 8TB with 1TB SSD Cache
Display(s) Acer Nitro VG280K 4K 28"
Case Fractal Design Define S
Audio Device(s) Onboard is good enough for me
Power Supply eVGA SuperNOVA 1000w G3
Software Windows 10 Pro x64
Say what? 12V x 52A = 624W, unless my maths is bad, thats neither continous or takes into account efficiency.

That isn't how PSU rails work on multi-rail PSUs.

It is a common mistake to take all the 12v rails, add them together, and then take that final figure as the total.

I'll use the HEC as an example. It has two 12v rails, one 22A and one 30A. Both rails are really drawing from the same source. Now that source can supply a certain maximum amount. Each rail can supply a maximum of whatever it is rated for. So rail 1 can supply 264w, and rail 2 can supply 360w. However, they can't both do their maximum at the same time, they are limitted by the primary 12v source they are drawing from.

The HEC unit is very poorly documented when it comes to this, there is no way of knowing what the actual maximum 12v load is, it just isn't documented anywhere I can find. However, other PSUs are better about documenting this. If you look at this SeaSonic unit, it is more clearly documented what is going on. Each 12v rail is capable of a maximum of 17a, but the 12v load overall can't exceed 288w which is 24a. So if the first rail is using all 17a, that leave only 7a for the second rail to use.

:toast:

Now, I'm with everyone else here, it is probably a PSU issue, and DO NOT BUY A CHEAP PSU! Not only could a cheap PSU lead to the issues we are seeing here, it could potentially fry components or kill entire systems. Plus, a good PSU bought today can last years, through multiple builds. Hell my Thermaltake 750w went through at least 3 different rigs. It might have been a little more expensive when I bought it, but it lasted. In fact, I would still be using it today if I hadn't swapped it out for the Corsair trying to track down a gremlin(it wasn't the PSU).
 
Last edited:

Tatty_Two

Gone Fishing
Joined
Jan 18, 2006
Messages
25,793 (3.88/day)
Location
Worcestershire, UK
Processor Rocket Lake Core i5 11600K @ 5 Ghz with PL tweaks
Motherboard MSI MAG Z490 TOMAHAWK
Cooling Thermalright Peerless Assassin 120SE + 4 Phanteks 140mm case fans
Memory 32GB (4 x 8GB SR) Patriot Viper Steel 4133Mhz DDR4 @ 3600Mhz CL14@1.45v Gear 1
Video Card(s) Asus Dual RTX 4070 OC
Storage WD Blue SN550 1TB M.2 NVME//Crucial MX500 500GB SSD (OS)
Display(s) AOC Q2781PQ 27 inch Ultra Slim 2560 x 1440 IPS
Case Phanteks Enthoo Pro M Windowed - Gunmetal
Audio Device(s) Onboard Realtek ALC1200/SPDIF to Sony AVR @ 5.1
Power Supply Seasonic CORE GM650w Gold Semi modular
Mouse Coolermaster Storm Octane wired
Keyboard Element Gaming Carbon Mk2 Tournament Mech
Software Win 10 Home x64
If a PSU says 600 watts you should never really expect to actually push it to that limit and not wind up roasting weiners over a warm fire.

Seriously I think it is not saying that you can use 52 amps at once. All that is saying is that one rail can handle 30 amps and the other 22. Not that both can handle that at one time. There are PSUs that have like 6 30 amp rails and they are not 2000 watt models. :toast:

Lol..... I am not questioning the wattage, I am questioning the amperage.
 

Tatty_Two

Gone Fishing
Joined
Jan 18, 2006
Messages
25,793 (3.88/day)
Location
Worcestershire, UK
Processor Rocket Lake Core i5 11600K @ 5 Ghz with PL tweaks
Motherboard MSI MAG Z490 TOMAHAWK
Cooling Thermalright Peerless Assassin 120SE + 4 Phanteks 140mm case fans
Memory 32GB (4 x 8GB SR) Patriot Viper Steel 4133Mhz DDR4 @ 3600Mhz CL14@1.45v Gear 1
Video Card(s) Asus Dual RTX 4070 OC
Storage WD Blue SN550 1TB M.2 NVME//Crucial MX500 500GB SSD (OS)
Display(s) AOC Q2781PQ 27 inch Ultra Slim 2560 x 1440 IPS
Case Phanteks Enthoo Pro M Windowed - Gunmetal
Audio Device(s) Onboard Realtek ALC1200/SPDIF to Sony AVR @ 5.1
Power Supply Seasonic CORE GM650w Gold Semi modular
Mouse Coolermaster Storm Octane wired
Keyboard Element Gaming Carbon Mk2 Tournament Mech
Software Win 10 Home x64
That isn't how PSU rails work on multi-rail PSUs.

It is a common mistake to take all the 12v rails, add them together, and then take that final figure as the total.

I'll use the HEC as an example. It has two 12v rails, one 22A and one 30A. Both rails are really drawing from the same source. Now that source can supply a certain maximum amount. Each rail can supply a maximum of whatever it is rated for. So rail 1 can supply 264w, and rail 2 can supply 360w. However, they can't both do their maximum at the same time, they are limitted by the primary 12v source they are drawing from.

The HEC unit is very poorly documented when it comes to this, there is no way of knowing what the actual maximum 12v load is, it just isn't documented anywhere I can find. However, other PSUs are better about documenting this. If you look at this SeaSonic unit, it is more clearly documented what is going on. Each 12v rail is capable of a maximum of 17a, but the 12v load overall can't exceed 288w which is 24a. So if the first rail is using all 17a, that leave only 7a for the second rail to use.

:toast:

Now, I'm with everyone else here, it is probably a PSU issue, and DO NOT BUY A CHEAP PSU! Not only could a cheap PSU lead to the issues we are seeing here, it could potentially fry components or kill entire systems. Plus, a good PSU bought today can last years, through multiple builds. Hell my Thermaltake 750w went through at least 3 different rigs. It might have been a little more expensive when I bought it, but it lasted. In fact, I would still be using it today if I hadn't swapped it out for the Corsair trying to track down a gremlin(it wasn't the PSU).

I know and completely agree, but when someone makes the statement of the amperage of their unit by adding the 2 rails together, thats when I comment if you get my meaning, my example was to show that you cannot add both if you get my drift.
 

mgs-snake

New Member
Joined
Jun 23, 2010
Messages
11 (0.00/day)
although that PSU has 2 12v rails 18A each, 510W (450W true), it wasn't able to support that card... looks like -as u said- a brand issue!

He told me he's going to afford another PSU...

anyway thanks everybody for the useful info.

U R THE BEST ;)
 

newtekie1

Semi-Retired Folder
Joined
Nov 22, 2005
Messages
28,472 (4.25/day)
Location
Indiana, USA
Processor Intel Core i7 10850K@5.2GHz
Motherboard AsRock Z470 Taichi
Cooling Corsair H115i Pro w/ Noctua NF-A14 Fans
Memory 32GB DDR4-3600
Video Card(s) RTX 2070 Super
Storage 500GB SX8200 Pro + 8TB with 1TB SSD Cache
Display(s) Acer Nitro VG280K 4K 28"
Case Fractal Design Define S
Audio Device(s) Onboard is good enough for me
Power Supply eVGA SuperNOVA 1000w G3
Software Windows 10 Pro x64
I know and completely agree, but when someone makes the statement of the amperage of their unit by adding the 2 rails together, thats when I comment if you get my meaning, my example was to show that you cannot add both if you get my drift.

Right, I figured you knew, I was just adding clearification for others.:toast:
 
Top