• We've upgraded our forums. Please post any issues/requests in this thread.

2 x 42A GPUs on a 65A 12V rail?

Joined
Jan 17, 2014
Messages
1 (0.00/day)
Likes
0
#1
Hi

I want to upgrade to 2 GTX 780 Ti's in SLI which each requires at least a minimum 12V current rating of 42A. Currently I'm using a Corsair GS800(v1) which features a single 12V rail with 65A. Does that then mean my GS800 won't cut it? And does amps stack meaning I would need to upgrade to a PSU with a minimum 12V current rating of 84A?

Sorry if it's a dumb question but I don't really know anything about power supplies or electricity in general.
 

brandonwh64

Addicted to Bacon and StarCrunches!!!
Joined
Sep 6, 2009
Messages
19,516 (6.46/day)
Likes
6,937
Location
Chatsworth, GA
System Name The StarCrunch Defender! | X58 Cruncher!
Processor I7 6700K @ STOCK | Intel I7-920
Motherboard Gigabyte Z170X-UD5 | Alienware MS-7543 X58
Cooling Corsair A70 Push/Pull | Corsair H50
Memory Crucial Ballistix DDR4 2400 MHz | Pereema 3x2GB DDR3
Video Card(s) Gigabyte Gaming G1 GTX 1070 | Gigabyte 7970 3GB
Storage 2x Samsung Pro 256GB M.2 SSD's in Raid 0 | 4TB Western Digital SATA drive
Display(s) ViewSonic VG2227wm 1080P | OLD viewsonics
Case NZXT Tempest 410 Elite | NZXT Source 210
Audio Device(s) Onboard
Power Supply Corsair 750TX | Enermax Liberty 500W
Mouse MX518 | MX502
Keyboard TESORO Mechanical | ANZO Mechanical
Software Windows 10 Pro on both
#2
in this situation I would not trust this PSU. When it comes to 2x600$+ GPU's I would just break down and spring for a better PSU.
 
Joined
Oct 8, 2012
Messages
1,364 (0.72/day)
Likes
411
Location
Israel
Processor Intel Core i5 3570K @ 4.5Ghz
Motherboard Gigabyte Z77X UD5H
Cooling Antec H20 920
Memory Corsair Dominator Platinum DDR3 4x4GB 2000mhz 9-11-10-24 CR-1
Video Card(s) EVGA GTX 970 SC
Storage Crucial M500 240Gb/Seagate Barracuda 2TB
Display(s) LG 29UM67 2560x1080 75hz IPS
Case Coolermaster 690
Audio Device(s) Creative X-FI Titanium + Sennheiser PC360
Power Supply Corsair TX850
Mouse Logitech G502 Proteus Spectrum
Keyboard Logitech G710+
Software Windows 7 Ultimate 64bit
#3
In terms of power it will handle them,but if you have a sudden power shortage or if a your electrical grid is struck by lightning it might not protect your hardware the same way as a more expensive PSU.
 
Joined
Jan 6, 2014
Messages
37 (0.03/day)
Likes
7
Location
United States
Processor Intel i5-3570k @ 4.2
Motherboard ASUS Maximus V Formula
Cooling Corsair H100i
Memory 16GB Corsair Vengeance
Video Card(s) EVGA GTX780 FTW
Storage Seagate Momentus XT 750GB Hybrid SSD | Seagate Barracuda 250GB
Display(s) 24" 144hz ASUS VG248QE
Case CoolerMaster HAF 932
Audio Device(s) ASUS OnboardFX
Power Supply Seasonic SS-1050XM
Software Windows 7 64-bit
#4
800W is the minimum suggested for SLI, especially with two 780's, and if you're overclocking your the cards and even your cpu, you might have some issues. I would have to agree with brandonwh64 on this one, I would not trust that power supply to SLI big beefy cards like the 780's. The GS line are not quite meant for that level of performance. If you're sticking with Corsair I would look at the HX or AX line with 1000W minimum. However, if you want to save a little money, look at the EVGA SuperNova's, they are incredible psu's and just as good, if not better, than Corsair.
 

RCoon

Gaming Moderator
Staff member
Joined
Apr 19, 2012
Messages
11,365 (5.51/day)
Likes
9,492
Location
Gypsyland, UK
System Name HP Omen 17
Processor i7 7700HQ
Memory 16GB 2400Mhz DDR4
Video Card(s) GTX 1060
Storage Samsung SM961 256GB + HGST 1TB
Display(s) 1080p IPS G-SYNC 75Hz
Audio Device(s) Bang & Olufsen
Power Supply 230W
Mouse Roccat Kone XTD+
Software Win 10 Pro
#5
You were on the right track until you said 1000w. 850w would be closer to the mark, 1000w is closer to triple sli/xfire territory...
 
Joined
Jan 6, 2014
Messages
37 (0.03/day)
Likes
7
Location
United States
Processor Intel i5-3570k @ 4.2
Motherboard ASUS Maximus V Formula
Cooling Corsair H100i
Memory 16GB Corsair Vengeance
Video Card(s) EVGA GTX780 FTW
Storage Seagate Momentus XT 750GB Hybrid SSD | Seagate Barracuda 250GB
Display(s) 24" 144hz ASUS VG248QE
Case CoolerMaster HAF 932
Audio Device(s) ASUS OnboardFX
Power Supply Seasonic SS-1050XM
Software Windows 7 64-bit
#6
It's a little much, yes, however I lean on the side of having a little more headroom and more wattage than not. Even at 850w, I think you're cutting yourself a little short. I look at longevity and the fact the psu will loose efficiency over time, so in my opinion it's worth having the extra wattage, not to mention if you're buying two 780's, than what's another $30-40 to jump from a 850w to a 1000w and have piece of mind?

OP: If you're really considering getting an AX1200i (which is overkill) from Corsair, take a look at the SuperNova 1300G2 from EVGA. Same quality, better warranty, and a lot cheaper.
 

Frick

Fishfaced Nincompoop
Joined
Feb 27, 2006
Messages
14,878 (3.45/day)
Likes
5,411
System Name A dancer in your disco of fire
Processor i3 4130 3.4Ghz
Motherboard MSI B85M-E45
Cooling Cooler Master Hyper 212 Evo
Memory 4 x 4GB Crucial Ballistix Sport 1400Mhz
Video Card(s) Asus GTX 760 DCU2OC 2GB
Storage Crucial BX100 120GB | WD Blue 1TB x 2
Display(s) BenQ GL2450HT
Case AeroCool DS Cube White
Power Supply Cooler Master G550M
Mouse Intellimouse Explorer 3.0
Keyboard Dell SK-3205
Software Windows 10 Pro
#7
in this situation I would not trust this PSU. When it comes to 2x600$+ GPU's I would just break down and spring for a better PSU.
So much this. I would trust the PSU, but if you can spend that money on GPU's you should really be able to spend more on the PSU as well.
 

Tatty_One

Super Moderator
Staff member
Joined
Jan 18, 2006
Messages
19,745 (4.54/day)
Likes
6,011
Location
Worcestershire, UK
Processor Skylake Core i7 6700k @ 4.6gig
Motherboard MSI Z170A Tomahawk
Cooling Cooler Master Seidon 240V AIO/Viper140's
Memory 16GB Corsair Vengeance LPX 3000mhz CL14
Video Card(s) Sapphire 4gb R9 290X VaporX @1150mhz
Storage SkHynix SL308 120GB/CrucialM4/1TB WD Black
Display(s) LG 29inch 2560x1080 Curved Ultrawide IPS
Case Phanteks Enthoo Pro M Windowed - Gunmetal
Audio Device(s) Xifi Elite Pro 7.1/VideoLogic ZXR550's
Power Supply XFX Pro Black Edition 750W Gold modular
Keyboard CM Storm Octane Combo
Software Win 10 Home x64
#8
If I read a review like Guru 3D's and they recommended 800W as a minimum I would want more than 800W personally, of course 800W will do but once you factor in any GPU or CPU overclocking, well, lets just say I like a margin, if the OP does not overclock anything then go with the 800W.
 
Joined
Oct 8, 2012
Messages
1,364 (0.72/day)
Likes
411
Location
Israel
Processor Intel Core i5 3570K @ 4.5Ghz
Motherboard Gigabyte Z77X UD5H
Cooling Antec H20 920
Memory Corsair Dominator Platinum DDR3 4x4GB 2000mhz 9-11-10-24 CR-1
Video Card(s) EVGA GTX 970 SC
Storage Crucial M500 240Gb/Seagate Barracuda 2TB
Display(s) LG 29UM67 2560x1080 75hz IPS
Case Coolermaster 690
Audio Device(s) Creative X-FI Titanium + Sennheiser PC360
Power Supply Corsair TX850
Mouse Logitech G502 Proteus Spectrum
Keyboard Logitech G710+
Software Windows 7 Ultimate 64bit
#9
Are guys for real? 800W will not cause any issues even with 2x780ti,theres a guy here that runs a 690 on a 550w PSU.
 
Joined
Jan 6, 2014
Messages
37 (0.03/day)
Likes
7
Location
United States
Processor Intel i5-3570k @ 4.2
Motherboard ASUS Maximus V Formula
Cooling Corsair H100i
Memory 16GB Corsair Vengeance
Video Card(s) EVGA GTX780 FTW
Storage Seagate Momentus XT 750GB Hybrid SSD | Seagate Barracuda 250GB
Display(s) 24" 144hz ASUS VG248QE
Case CoolerMaster HAF 932
Audio Device(s) ASUS OnboardFX
Power Supply Seasonic SS-1050XM
Software Windows 7 64-bit
#10
Are guys for real? 800W will not cause any issues even with 2x780ti,theres a guy here that runs a 690 on a 550w PSU.
Just because a psu is 800w doesn't mean it's going to support your computer components the way that it should. There's far more to a psu than just total wattage. In the OP's case, he's going to be running very high-end graphics cards that require solid, stable power, and his psu isn't good enough in my opinion. Will it power them? Yes. Hell, a 750w would power them too. However, just because it can, doesn't always mean that it should. Having a cheap psu, or a psu being starved for power is not the kind of instability you want with a gaming rig.
 

brandonwh64

Addicted to Bacon and StarCrunches!!!
Joined
Sep 6, 2009
Messages
19,516 (6.46/day)
Likes
6,937
Location
Chatsworth, GA
System Name The StarCrunch Defender! | X58 Cruncher!
Processor I7 6700K @ STOCK | Intel I7-920
Motherboard Gigabyte Z170X-UD5 | Alienware MS-7543 X58
Cooling Corsair A70 Push/Pull | Corsair H50
Memory Crucial Ballistix DDR4 2400 MHz | Pereema 3x2GB DDR3
Video Card(s) Gigabyte Gaming G1 GTX 1070 | Gigabyte 7970 3GB
Storage 2x Samsung Pro 256GB M.2 SSD's in Raid 0 | 4TB Western Digital SATA drive
Display(s) ViewSonic VG2227wm 1080P | OLD viewsonics
Case NZXT Tempest 410 Elite | NZXT Source 210
Audio Device(s) Onboard
Power Supply Corsair 750TX | Enermax Liberty 500W
Mouse MX518 | MX502
Keyboard TESORO Mechanical | ANZO Mechanical
Software Windows 10 Pro on both
#11
Are guys for real? 800W will not cause any issues even with 2x780ti,theres a guy here that runs a 690 on a 550w PSU.
Yes 800W may support it but it would def give it a work out and probably lower the life expectancy by a huge margin and that can compromise your brand new 780Ti's
 

Frick

Fishfaced Nincompoop
Joined
Feb 27, 2006
Messages
14,878 (3.45/day)
Likes
5,411
System Name A dancer in your disco of fire
Processor i3 4130 3.4Ghz
Motherboard MSI B85M-E45
Cooling Cooler Master Hyper 212 Evo
Memory 4 x 4GB Crucial Ballistix Sport 1400Mhz
Video Card(s) Asus GTX 760 DCU2OC 2GB
Storage Crucial BX100 120GB | WD Blue 1TB x 2
Display(s) BenQ GL2450HT
Case AeroCool DS Cube White
Power Supply Cooler Master G550M
Mouse Intellimouse Explorer 3.0
Keyboard Dell SK-3205
Software Windows 10 Pro
#12
Are guys for real? 800W will not cause any issues even with 2x780ti,theres a guy here that runs a 690 on a 550w PSU.


@brandonwh64 He'll never reach full load with an 800w unit, it'll be fine even over time. Sure if he gets a 1200W unit he can power high power systems for a decade, but that might not be relevant.
 
Joined
Dec 16, 2010
Messages
1,484 (0.58/day)
Likes
544
System Name My Surround PC
Processor Intel Core i7 4770K @ 4.2 GHz (1.15 V)
Motherboard ASRock Z87 Extreme6
Cooling Swiftech MCP35X / XSPC Rasa CPU / Swiftech MCW82 / Koolance HX-1320 w/ 8 Scythe Fans
Memory 16GB (2 x 8 GB) Mushkin Blackline DDR3-2400 CL11-13-13-31
Video Card(s) MSI Nvidia GeForce GTX 980 Ti Armor 2X
Storage Samsung SSD 850 Pro 256GB, 2 x 4TB HGST NAS HDD in RAID 1
Display(s) 3 x Acer K272HUL 27" in Surround 7860x1440
Case NZXT Source 530
Audio Device(s) Integrated ALC1150 + Logitech Z-5500 5.1
Power Supply Seasonic X-1250 1.25kW
Mouse Gigabyte Aivia Krypton
Keyboard Logitech G15
Software Windows 8.1 Pro x64
#13
If he's using GPGPU programs, power consumption is going to be much higher than in a gaming load.
 

brandonwh64

Addicted to Bacon and StarCrunches!!!
Joined
Sep 6, 2009
Messages
19,516 (6.46/day)
Likes
6,937
Location
Chatsworth, GA
System Name The StarCrunch Defender! | X58 Cruncher!
Processor I7 6700K @ STOCK | Intel I7-920
Motherboard Gigabyte Z170X-UD5 | Alienware MS-7543 X58
Cooling Corsair A70 Push/Pull | Corsair H50
Memory Crucial Ballistix DDR4 2400 MHz | Pereema 3x2GB DDR3
Video Card(s) Gigabyte Gaming G1 GTX 1070 | Gigabyte 7970 3GB
Storage 2x Samsung Pro 256GB M.2 SSD's in Raid 0 | 4TB Western Digital SATA drive
Display(s) ViewSonic VG2227wm 1080P | OLD viewsonics
Case NZXT Tempest 410 Elite | NZXT Source 210
Audio Device(s) Onboard
Power Supply Corsair 750TX | Enermax Liberty 500W
Mouse MX518 | MX502
Keyboard TESORO Mechanical | ANZO Mechanical
Software Windows 10 Pro on both
#14
Sure that 556W but what does he have for the rest of his system? He only has 244W to spare to keep it healthy and a OCed CPU and multiple HD / fans can add up quick.
 

RCoon

Gaming Moderator
Staff member
Joined
Apr 19, 2012
Messages
11,365 (5.51/day)
Likes
9,492
Location
Gypsyland, UK
System Name HP Omen 17
Processor i7 7700HQ
Memory 16GB 2400Mhz DDR4
Video Card(s) GTX 1060
Storage Samsung SM961 256GB + HGST 1TB
Display(s) 1080p IPS G-SYNC 75Hz
Audio Device(s) Bang & Olufsen
Power Supply 230W
Mouse Roccat Kone XTD+
Software Win 10 Pro
#15

Mussels

Moderprator
Staff member
Joined
Oct 6, 2004
Messages
46,100 (9.57/day)
Likes
13,528
Location
Australalalalalaia.
System Name Daddy Long Legs
Processor Ryzen R7 1700, 3.9GHz 1.375v
Motherboard MSI X370 Gaming PRO carbon
Cooling Fractal Celsius S24 (Silent fans, meh pump)
Memory 16GB 2133 generic @ 2800
Video Card(s) MSI GTX 1080 Gaming X (BIOS modded to Gaming Z - faster and solved black screen bugs!)
Storage 1TB Intel SSD Pro 6000p (60TB USB3 storage)
Display(s) Samsung 4K 40" HDTV (UA40KU6000WXXY) / 27" Qnix 2K 110Hz
Case Fractal Design R5. So much room, so quiet...
Audio Device(s) Pioneer VSX-519V + Yamaha YHT-270 / sennheiser HD595/518 + bob marley zion's
Power Supply Corsair HX 750i (Platinum, fan off til 300W)
Mouse Logitech G403 + KKmoon desk-sized mousepad
Keyboard Corsair K65 Rapidfire
Software Windows 10 pro x64 (all systems)
Benchmark Scores Laptops: i7-4510U + 840M 2GB (touchscreen) 275GB SSD + 16GB i7-2630QM + GT 540M + 8GB
#16
those 42a suggestions are for the entire system, not just the graphics cards. i've gone and made a thread where people are comparing power consumption at the wall, and you'll be fine.


do you have the worlds greatest PSU? no
in an ideal world would you run that combination? no
will it be fine, probably for a few years? yeah sure. just dont OC the system too hard.
 
Joined
Feb 8, 2012
Messages
2,678 (1.25/day)
Likes
1,914
Location
Zagreb, Croatia
System Name Windows 7 64-bit Core i5 3570K
Processor Intel Core i5 3570K @ 4.2 GHz, 1.26 V
Motherboard Gigabyte GA-Z77MX-D3H
Cooling Scythe Katana 4
Memory 4 x 4 GB G-Skill Sniper DDR3 @ 1600 MHz
Video Card(s) Gainward NVIDIA GeForce GTX 970 Phantom
Storage Western Digital Caviar Blue 1 TB, Seagate Baracuda 1 TB
Display(s) Dell P2414H
Case CoolerMaster Silencio 550
Audio Device(s) VIA HD Audio
Power Supply Corsair TX v2 650W
Mouse Steelseries Sensei
Keyboard CM Storm Quickfire Pro, Cherry MX Reds
Software MS Windows 7 Enterprise 64-bit SP1
#17
I see nothing wrong using only 50% of PSU's rated power at maximum load :D psu fan stays quiet, efficiency is at max and lower temps are good for the longevity
 

Aquinus

Resident Wat-man
Joined
Jan 28, 2012
Messages
10,398 (4.85/day)
Likes
5,477
Location
Concord, NH
System Name Kratos
Processor Intel Core i7 3930k @ 4.2Ghz
Motherboard ASUS P9X79 Deluxe
Cooling Zalman CPNS9900MAX 130mm
Memory G.Skill DDR3-2133, 16gb (4x4gb) @ 9-11-10-28-108-1T 1.65v
Video Card(s) MSI AMD Radeon R9 390 GAMING 8GB @ PCI-E 3.0
Storage 2x120Gb SATA3 Corsair Force GT Raid-0, 4x1Tb RAID-5, 1x500GB
Display(s) 1x LG 27UD69P (4k), 2x Dell S2340M (1080p)
Case Antec 1200
Audio Device(s) Onboard Realtek® ALC898 8-Channel High Definition Audio
Power Supply Seasonic 1000-watt 80 PLUS Platinum
Mouse Logitech G602
Keyboard Rosewill RK-9100
Software Ubuntu 17.10
Benchmark Scores Benchmarks aren't everything.
#18
I see nothing wrong using only 50% of PSU's rated power at maximum load :D psu fan stays quiet, efficiency is at max and lower temps are good for the longevity
That was my goal. My PSU barely warms up even when the entire machine is fully loaded. Less thermal expansion/contraction means better longevity.
 
Last edited:

newtekie1

Semi-Retired Folder
Joined
Nov 22, 2005
Messages
24,275 (5.51/day)
Likes
10,362
Location
Indiana, USA
Processor Intel Core i7 4790K@4.6GHz
Motherboard AsRock Z97 Extreme6
Cooling Corsair H100i
Memory 32GB Corsair DDR3-1866 9-10-9-27
Video Card(s) ASUS GTX960 STRIX @ 1500/1900
Storage 480GB Crucial MX200 + 2TB Seagate Solid State Hybrid Drive with 128GB OCZ Synapse SSD Cache
Display(s) QNIX QX2710 1440p@120Hz
Case Corsair 650D Black
Audio Device(s) Onboard is good enough for me
Power Supply Corsair HX850
Software Windows 10 Pro x64
#19
The GTX780Ti peaks at 269w, thats only 22A.

The GS800v1 isn't a super great power supply, but it is a damn good one. I don't think it will have a problem with the SLI GTX780Ti's.
 

Tatty_One

Super Moderator
Staff member
Joined
Jan 18, 2006
Messages
19,745 (4.54/day)
Likes
6,011
Location
Worcestershire, UK
Processor Skylake Core i7 6700k @ 4.6gig
Motherboard MSI Z170A Tomahawk
Cooling Cooler Master Seidon 240V AIO/Viper140's
Memory 16GB Corsair Vengeance LPX 3000mhz CL14
Video Card(s) Sapphire 4gb R9 290X VaporX @1150mhz
Storage SkHynix SL308 120GB/CrucialM4/1TB WD Black
Display(s) LG 29inch 2560x1080 Curved Ultrawide IPS
Case Phanteks Enthoo Pro M Windowed - Gunmetal
Audio Device(s) Xifi Elite Pro 7.1/VideoLogic ZXR550's
Power Supply XFX Pro Black Edition 750W Gold modular
Keyboard CM Storm Octane Combo
Software Win 10 Home x64
#20
Are guys for real? 800W will not cause any issues even with 2x780ti,theres a guy here that runs a 690 on a 550w PSU.

A GTX 690 at full load draws 373W, that's full system load so i would hope a 550W would power it, the test system though was not overclocked.
 

Aquinus

Resident Wat-man
Joined
Jan 28, 2012
Messages
10,398 (4.85/day)
Likes
5,477
Location
Concord, NH
System Name Kratos
Processor Intel Core i7 3930k @ 4.2Ghz
Motherboard ASUS P9X79 Deluxe
Cooling Zalman CPNS9900MAX 130mm
Memory G.Skill DDR3-2133, 16gb (4x4gb) @ 9-11-10-28-108-1T 1.65v
Video Card(s) MSI AMD Radeon R9 390 GAMING 8GB @ PCI-E 3.0
Storage 2x120Gb SATA3 Corsair Force GT Raid-0, 4x1Tb RAID-5, 1x500GB
Display(s) 1x LG 27UD69P (4k), 2x Dell S2340M (1080p)
Case Antec 1200
Audio Device(s) Onboard Realtek® ALC898 8-Channel High Definition Audio
Power Supply Seasonic 1000-watt 80 PLUS Platinum
Mouse Logitech G602
Keyboard Rosewill RK-9100
Software Ubuntu 17.10
Benchmark Scores Benchmarks aren't everything.
#21
A GTX 690 at full load draws 373W, that's full system load so i would hope a 550W would power it, the test system though was not overclocked.
That definitely depends on the platform. My 3820 fully loaded will draw 350-watts easy by itself, forget loading the GPUs. We don't know what he has for a platform, so we really can't say how much it will draw.
 

Bo$$

Lab Extraordinaire
Joined
May 7, 2009
Messages
5,626 (1.79/day)
Likes
971
Location
London, UK
System Name Desktop | Server
Processor Intel i7 2700k @ 4.4GHZ | AMD 5350 @ 2500MHZ
Motherboard Asus P7Z77-V Pro | Asus AM1I-A
Cooling GeLID Tranquilo | Stock Air
Memory Crucial Ballistix 2x8GB CL8 1600MHZ | Corsair Vengence 2x4GB CL9 1600MHZ
Video Card(s) Gainward GTX 780 Phantom GLH | PNY GTX 750Ti
Storage Samsung 840 EVO 250GB + 4TB WD Red | 2x Seagate Barracuda 2TB
Display(s) Samsung S27D390H + Asus VE276Q | Headless
Case Fractal Design R5 | CM Elite 110
Audio Device(s) Asus Xonar D1 w/Otone Stilo 5.1 and Creative Fatal1ty headset
Power Supply EVGA Supernova 850 G2| Corsair CX430M
Mouse Razer Imperator 2012
Keyboard Corsair K90
Software Windows 7 SP1 X64 | Ubuntu 16.04LTS
#22
It's totally fine, Corsair is a good brand, no major risks to this, system wont pull more than 700W anyway. You'll be fine..... overclock your heart out. make sure you've got good airflow and your PSU can breathe and you'll be happy
 

Tatty_One

Super Moderator
Staff member
Joined
Jan 18, 2006
Messages
19,745 (4.54/day)
Likes
6,011
Location
Worcestershire, UK
Processor Skylake Core i7 6700k @ 4.6gig
Motherboard MSI Z170A Tomahawk
Cooling Cooler Master Seidon 240V AIO/Viper140's
Memory 16GB Corsair Vengeance LPX 3000mhz CL14
Video Card(s) Sapphire 4gb R9 290X VaporX @1150mhz
Storage SkHynix SL308 120GB/CrucialM4/1TB WD Black
Display(s) LG 29inch 2560x1080 Curved Ultrawide IPS
Case Phanteks Enthoo Pro M Windowed - Gunmetal
Audio Device(s) Xifi Elite Pro 7.1/VideoLogic ZXR550's
Power Supply XFX Pro Black Edition 750W Gold modular
Keyboard CM Storm Octane Combo
Software Win 10 Home x64
#23
That definitely depends on the platform. My 3820 fully loaded will draw 350-watts easy by itself, forget loading the GPUs. We don't know what he has for a platform, so we really can't say how much it will draw.
So you reckon you almost triple your TDP with that overclock? Damn, at 4.3 Gig my 930 pulls 214, and there was me think technology has moved on :)
 

Aquinus

Resident Wat-man
Joined
Jan 28, 2012
Messages
10,398 (4.85/day)
Likes
5,477
Location
Concord, NH
System Name Kratos
Processor Intel Core i7 3930k @ 4.2Ghz
Motherboard ASUS P9X79 Deluxe
Cooling Zalman CPNS9900MAX 130mm
Memory G.Skill DDR3-2133, 16gb (4x4gb) @ 9-11-10-28-108-1T 1.65v
Video Card(s) MSI AMD Radeon R9 390 GAMING 8GB @ PCI-E 3.0
Storage 2x120Gb SATA3 Corsair Force GT Raid-0, 4x1Tb RAID-5, 1x500GB
Display(s) 1x LG 27UD69P (4k), 2x Dell S2340M (1080p)
Case Antec 1200
Audio Device(s) Onboard Realtek® ALC898 8-Channel High Definition Audio
Power Supply Seasonic 1000-watt 80 PLUS Platinum
Mouse Logitech G602
Keyboard Rosewill RK-9100
Software Ubuntu 17.10
Benchmark Scores Benchmarks aren't everything.
#24
So you reckon you almost triple your TDP with that overclock? Damn, at 4.3 Gig my 930 pulls 214, and there was me think technology has moved on :)
At idle it draws a little over 200-watts. That's an increase of ~150-watts over idle. I wouldn't call it tripling the TDP since a sizeable chunk of that power is probably fans, hard drives, and the video cards at idle. Also consider for a moment that the PCI-E controller for me is on the CPU, for you it's on the motherboard. I'm also using 32 PCI-E lanes. So there are a lot of things that could impact my power usage; for example, multi-monitor consumes more GPU power at idle than a single display does.
 

AsRock

TPU addict
Joined
Jun 23, 2007
Messages
15,309 (4.00/day)
Likes
4,717
Location
US
Processor 2500k \ 3770k
Motherboard ASRock Z68 \ Z77
Memory Samsung low profile 1600
Video Card(s) XFX 6770 \ XFX R9 290X
Storage Intel 80Gb (SATA2) WD 250Gb \ Team SSD+Samsung Evo 250Gb+500Gb+ 2xCorsair Force+WD250GbHDD
Display(s) Samsung 1080P \ Toshiba HDTV 1080P
Case HTPC400 \ Thermaltake Armor case ( original ), With Zalman fan controller ( wattage usage ).
Audio Device(s) Yamaha RX-V475 \ Marantz SR5008 Tannoy Mercury MKII Paradigm 5SE + Tannoy Mercury F4
Power Supply PC&Power 750w \ Seasonic 750w MKII
Mouse MS intelimouse \ Logitech G700s + Steelseries Sensei wireless
Keyboard Logitech K120 \ ROCCAT MK Pro ( modded amber leds )
Benchmark Scores Meh benchmarks.
#25
So much this. I would trust the PSU, but if you can spend that money on GPU's you should really be able to spend more on the PSU as well.
Yes for now it might be trust worthy but say in a year or 2 when the PSU has grown weaker..

Better just to get one with some head room as it better to be safe than sorry even more so when it comes to PSU's.

It's totally fine, Corsair is a good brand, no major risks to this, system wont pull more than 700W anyway. You'll be fine..... overclock your heart out. make sure you've got good airflow and your PSU can breathe and you'll be happy

Not always true as they use cheap brands too.
 
Last edited: