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

Is the "Corsair TX750w" enough for three cards?

Joined
Nov 2, 2010
Messages
46 (0.02/day)
Likes
1
Location
Sweden
Processor Intel Core i7 6700K
Motherboard ASUS Formula VIII
Cooling Custom WC
Memory Corsair Dominator @3600MHz
Video Card(s) Asus GeForce GTX670 2GB DC II
Storage Samsung 950 Pro 512GB+1TB EVO 850
Case Corsair 780T
Audio Device(s) On-Board
Power Supply Corsair RMi 850W
#1
Hi Guys!

I'm asking about if this Power Supply is enough for 2 GTX460s and one GTX470 :confused:

I'm not gonna OC them, i will use them at the stock speeds :shadedshu

Thanks a lot.
 

newtekie1

Semi-Retired Folder
Joined
Nov 22, 2005
Messages
24,277 (5.51/day)
Likes
10,365
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
#3
The GTX460s are going to pull about 120w each and the GTX470 will pull about 180w under load.

I assume you are doing something like folding with them 24/7 or something. If it was a more generic 750w I'd say don't risk it, but the Corsair 750TX should handle it.
 

aCid888*

New Member
Joined
May 19, 2008
Messages
2,754 (0.79/day)
Likes
630
Location
In a state of flux...
#4
The GTX460s are going to pull about 120w each and the GTX470 will pull about 180w under load.

I assume you are doing something like folding with them 24/7 or something. If it was a more generic 750w I'd say don't risk it, but the Corsair 750TX should handle it.
@OP: More detailed answer (above) is no doubt the truth, but I wouldnt feel very good loading all the cards and the CPU. :)




Corsair or not, it would be very close to the max output of the unit in question, if not above.
 
Joined
Sep 11, 2009
Messages
2,680 (0.89/day)
Likes
693
Location
Reaching your left retina.
#5
If cards are not heavily OCed I'd say it can handle it without a problem at all. The 750TX can actually handle almost all of its 750W on the 12v rail.

I know that you said you are not going to OC them, but maybe you bought some factory OCed ones.
 
Joined
Nov 2, 2010
Messages
46 (0.02/day)
Likes
1
Location
Sweden
Processor Intel Core i7 6700K
Motherboard ASUS Formula VIII
Cooling Custom WC
Memory Corsair Dominator @3600MHz
Video Card(s) Asus GeForce GTX670 2GB DC II
Storage Samsung 950 Pro 512GB+1TB EVO 850
Case Corsair 780T
Audio Device(s) On-Board
Power Supply Corsair RMi 850W
#6
That's right :) i will use them to folding (24/7)

So i should change my power unit :(

If the 750 is not enough, so witch power supply should i have? Bear in mind that i will OC all the cards on this new Power supply ..
 
Joined
Nov 2, 2010
Messages
46 (0.02/day)
Likes
1
Location
Sweden
Processor Intel Core i7 6700K
Motherboard ASUS Formula VIII
Cooling Custom WC
Memory Corsair Dominator @3600MHz
Video Card(s) Asus GeForce GTX670 2GB DC II
Storage Samsung 950 Pro 512GB+1TB EVO 850
Case Corsair 780T
Audio Device(s) On-Board
Power Supply Corsair RMi 850W
#7
If cards are not heavily OCed I'd say it can handle it without a problem at all. The 750TX can actually handle almost all of its 750W on the 12v rail.

I know that you said you are not going to OC them, but maybe you bought some factory OCed ones.
No, The cards is references
 
Joined
Jun 24, 2010
Messages
208 (0.08/day)
Likes
102
System Name MSI GT72S 6QE
Processor Core i7 6820HK
Motherboard Intel Sunrise Point CM236
Cooling 2 fans
Memory 2x 8 GB SO-DIMM DDR4-RAM (2133 MHz)
Video Card(s) NVIDIA GeForce GTX 980M - 8192 MB
Storage 1 ssd 3 hard drives
Display(s) 17.3 inch 16:9, 1920x1080 pixel, LG Philips LP173WF4-SPF1 (LGD0469), IPS, Full HD
Case ??!!!
Audio Device(s) Realtek ALC899
Power Supply most beautiful brick you have ever seen
#8
That's right :) i will use them to folding (24/7)

So i should change my power unit :(

If the 750 is not enough, so witch power supply should i have? Bear in mind that i will OC all the cards on this new Power supply ..
price range?
 

Fourstaff

Moderator
Staff member
Joined
Nov 29, 2009
Messages
9,376 (3.19/day)
Likes
2,100
Location
Home
System Name Asus K50-X5DAB \\ Orange!
Processor Athlon QL-65 2.2Ghz \\ 3570K
Motherboard Laptop \\ ASRock z77 Extreme4
Cooling Laptop \\ H100i
Memory 1x1GB + 1X2GB \\ 2x4Gb 1600Mhz CL9 Corsair XMS3
Video Card(s) Mobility Radeon HD4570 512mb \\ Zotac 660Ti OC 2Gb
Storage 250Gb \\ Samsung 840 250Gb + Toshiba DT01ACA300 3Tb
Display(s) 15.6" 1366x768 \\ LG 22EA53VQ
Case Laptop Chassis \\ NZXT Phantom 410 Black/Orange
Power Supply Power Brick \\ Corsair CXM500w
#9
Using Newtekie's data, the graphics card will pull about 420w, coupled with the ~200w for processor and everything else, the total is about 620w which is still fine by the looks of it. I am not too sure whether the 750tx has multiple rail, because that might prevent you from running all those cards due to load problems.
 
Joined
Nov 2, 2010
Messages
46 (0.02/day)
Likes
1
Location
Sweden
Processor Intel Core i7 6700K
Motherboard ASUS Formula VIII
Cooling Custom WC
Memory Corsair Dominator @3600MHz
Video Card(s) Asus GeForce GTX670 2GB DC II
Storage Samsung 950 Pro 512GB+1TB EVO 850
Case Corsair 780T
Audio Device(s) On-Board
Power Supply Corsair RMi 850W
#10
Joined
Apr 8, 2009
Messages
2,998 (0.95/day)
Likes
458
Location
vermont
System Name The wifes worst enemy
Processor i5-6600k
Motherboard gigabyte G1 gaming Z170X 6
Cooling water
Memory 16gb G.skill ripjaw DDR4 2400 4X4GB 15-15-15-35-2T
Video Card(s) Sapphire Nitro R9380-X 4GB
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 creative x-fi
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/
#11
the 750tx is single rail rated for a maximum of 840w so really it will handle the cards fine. if you are going to upgrade the 950tx is amaxing almost 1100w high amp single rail will power more then enough gpu's or the hx1000w its also rated for 1100w etc etc but is modular and costs almost $100 more
 
Joined
Jun 24, 2010
Messages
208 (0.08/day)
Likes
102
System Name MSI GT72S 6QE
Processor Core i7 6820HK
Motherboard Intel Sunrise Point CM236
Cooling 2 fans
Memory 2x 8 GB SO-DIMM DDR4-RAM (2133 MHz)
Video Card(s) NVIDIA GeForce GTX 980M - 8192 MB
Storage 1 ssd 3 hard drives
Display(s) 17.3 inch 16:9, 1920x1080 pixel, LG Philips LP173WF4-SPF1 (LGD0469), IPS, Full HD
Case ??!!!
Audio Device(s) Realtek ALC899
Power Supply most beautiful brick you have ever seen
#12
Using Newtekie's data, the graphics card will pull about 420w, coupled with the ~200w for processor and everything else, the total is about 620w which is still fine by the looks of it. I am not too sure whether the 750tx has multiple rail, because that might prevent you from running all those cards due to load problems.
1 pci express can provide 75w + 2x 6-pin connectors each delivering 75w... I am bad at math but I think your being optimistic considering its 3 video cards we are talking about.

Someone correct me If I am wrong please.
 
Joined
Sep 11, 2009
Messages
2,680 (0.89/day)
Likes
693
Location
Reaching your left retina.
#13
1 pci express can provide 75w + 2x 6-pin connectors each delivering 75w... I am bad at math but I think your being optimistic considering its 3 video cards we are talking about.

Someone correct me If I am wrong please.
It's mostly irrelevant from where those 420w of power come from: PCIe slots or 6-pin connectors, all of them take their juice from the 12v rail.

Also the fact that PCIe can provide 75w does not mean it is providing all of them all the time and consuming from the PSU. It's just the maximum spec.
 

erocker

Senior Moderator
Staff member
Joined
Jul 19, 2006
Messages
42,375 (10.17/day)
Likes
18,019
Processor Intel i7 8700k
Motherboard Gigabyte z370 AORUS Gaming 7
Cooling Water
Memory 16gb G.Skill 4000 MHz DDR4
Video Card(s) Evga GTX 1080
Storage 3 x Samsung Evo 850 500GB, 1 x 250GB, 2 x 2TB HDD
Display(s) Nixeus EDG27
Case Thermaltake X5
Power Supply Corsair HX1000i
Mouse Zowie EC1-B
Software Windows 10
#14
Wattage should be fine but what about amperage?
 
Joined
Sep 11, 2009
Messages
2,680 (0.89/day)
Likes
693
Location
Reaching your left retina.
#15
Wattage should be fine but what about amperage?
wattage = amperage X voltage

wattage enough (on the 12v rail) == amperage enough

The concern about what the 12v amperage is comes from the need to know how much the PSU can handle on that rail. In this case it's 60A which equals 720W. 12 x 60 = 720W

And that's something I always asked myself btw. Why do they usually list the 12v amperage instead of the wattage. It is unnecesarilly confusing.
 

sneekypeet

Unpaid Babysitter
Staff member
Joined
Apr 12, 2006
Messages
24,623 (5.77/day)
Likes
9,346
System Name His
Processor Intel i7 5930K
Motherboard Asus Maximus V Extreme
Cooling Thermalright True Spirit 140 BW Rev.A
Memory Corsair Dominator Platinum ROG
Video Card(s) nVidia GTX 1080 SLI with EVGA Hybrid coolers.
Storage Samsung 960 Pro / Crucial MX300 750GB / Seagate 1TB Spinner
Display(s) Sony 43" 4K 60hz
Case SilverStone Temjin TJ11
Audio Device(s) Realtek on board > Sony receiver > Cerwin Vega's
Power Supply Thermaltake TPSG 1050W
Mouse Always Changing
Keyboard Always Changing
Software Windows 10 Pro 64
#16
specs show 60A on the single rail.
 
Joined
Apr 5, 2005
Messages
6,571 (1.42/day)
Likes
1,164
Location
Republic of Asia (a.k.a Irvine), CA
System Name Red Spy
Processor FX 8350 @ 4.35 Ghz with 1.28v
Motherboard Gigabyte 990FX-UD3 v4.0
Cooling TT Water 3.0 Performer + 2 x Cougar 120mm fan, 1 x 120mm Blue LED, 1 x 200 mm Red LED fan
Memory Kingston HyperX DDR3 1333 16GB
Video Card(s) Asus R9 290 OC @ GPU - 1050, MEM - 1300
Storage ADATA 128GB Sata III SSD for OS, WDC Black - 1TB Storage, OCZ Vertex 3 120GB SSD - Games
Display(s) AOC 23" 1080P LCD
Case AeroCool XPredator X3
Audio Device(s) Built-in Realtek
Power Supply Corsair HX1000 Modular
Software Windows 7 Ultimate 64 bit
Benchmark Scores BF4 with Mantle on Ultra settings gets around 60 FPS.
#17
The GTX460s are going to pull about 120w each and the GTX470 will pull about 180w under load.

I assume you are doing something like folding with them 24/7 or something. If it was a more generic 750w I'd say don't risk it, but the Corsair 750TX should handle it.
+1.

That PSU should handle it.

May be go on to Corsair's website and use the tool to decide which PSU it recommends?
 

erocker

Senior Moderator
Staff member
Joined
Jul 19, 2006
Messages
42,375 (10.17/day)
Likes
18,019
Processor Intel i7 8700k
Motherboard Gigabyte z370 AORUS Gaming 7
Cooling Water
Memory 16gb G.Skill 4000 MHz DDR4
Video Card(s) Evga GTX 1080
Storage 3 x Samsung Evo 850 500GB, 1 x 250GB, 2 x 2TB HDD
Display(s) Nixeus EDG27
Case Thermaltake X5
Power Supply Corsair HX1000i
Mouse Zowie EC1-B
Software Windows 10
#18
Ok the PSU has 60 amps. So how many amps combined are two 460's and a 470?
 
Joined
Nov 2, 2010
Messages
46 (0.02/day)
Likes
1
Location
Sweden
Processor Intel Core i7 6700K
Motherboard ASUS Formula VIII
Cooling Custom WC
Memory Corsair Dominator @3600MHz
Video Card(s) Asus GeForce GTX670 2GB DC II
Storage Samsung 950 Pro 512GB+1TB EVO 850
Case Corsair 780T
Audio Device(s) On-Board
Power Supply Corsair RMi 850W
#19
Thanks to every one!

So there is some hope :)
 
Joined
Jun 24, 2010
Messages
208 (0.08/day)
Likes
102
System Name MSI GT72S 6QE
Processor Core i7 6820HK
Motherboard Intel Sunrise Point CM236
Cooling 2 fans
Memory 2x 8 GB SO-DIMM DDR4-RAM (2133 MHz)
Video Card(s) NVIDIA GeForce GTX 980M - 8192 MB
Storage 1 ssd 3 hard drives
Display(s) 17.3 inch 16:9, 1920x1080 pixel, LG Philips LP173WF4-SPF1 (LGD0469), IPS, Full HD
Case ??!!!
Audio Device(s) Realtek ALC899
Power Supply most beautiful brick you have ever seen
#21
Thanks to every one!

So there is some hope :)
I believe there is ALWAYS hope my friend. I just don't like to rely on it that's all :toast:
 

sneekypeet

Unpaid Babysitter
Staff member
Joined
Apr 12, 2006
Messages
24,623 (5.77/day)
Likes
9,346
System Name His
Processor Intel i7 5930K
Motherboard Asus Maximus V Extreme
Cooling Thermalright True Spirit 140 BW Rev.A
Memory Corsair Dominator Platinum ROG
Video Card(s) nVidia GTX 1080 SLI with EVGA Hybrid coolers.
Storage Samsung 960 Pro / Crucial MX300 750GB / Seagate 1TB Spinner
Display(s) Sony 43" 4K 60hz
Case SilverStone Temjin TJ11
Audio Device(s) Realtek on board > Sony receiver > Cerwin Vega's
Power Supply Thermaltake TPSG 1050W
Mouse Always Changing
Keyboard Always Changing
Software Windows 10 Pro 64
#22
While I think the cards will get clocked, and the numbers will swell, I dont think they would break 45A between the cards.
 
Joined
Nov 7, 2009
Messages
2,712 (0.92/day)
Likes
1,781
Location
Denmark
System Name The work PC / Folder 1 & 2 (+3 on/off)
Processor W3670 4.00 GHz/ W3670 3.8 / 4790K 4.4/ i7 920
Motherboard Gigabyte GA-X58A-UD5/UD7/Maximum Hero/ UD5
Cooling Custom WC/Noctua NH-D14/Noctua NH-D15/D14
Memory 6 GB A-Data/6 GB Mushkin /8 GB Corsair Vengance/ Mus
Video Card(s) 1070 X MSI/ 970 ASUS / 2x970 MSI/970 MSI
Storage 480 GB SSD / 480 GB SSD /480 GB SSD, all EVO 840
Display(s) Dell UltraSharp 2408WFP
Case Corsair 800D / Fractel R4 /none
Power Supply Enermax 87+ 600 W/ 500 W / AX 860/700 W Enermax
Software WIN7 64 bit
Benchmark Scores Cherry pie at one point ;)
#23
My 2 cents is to buy something bigger. If the 750 is anything like my TX650 then you will regret. I run a 450 and a 460 and my 12V is down to 11.82. Buy a 80+ Gold, 850, Enermax, Silverstone or ?
 

theonedub

habe fidem
Joined
Apr 30, 2009
Messages
7,902 (2.51/day)
Likes
5,115
Location
Northern CA, USA
System Name Erakith || Asus UX305FA
Processor i7 3770k @ 4.2ghz 1.068v || Intel Core M 5Y10 @ 800mhz
Motherboard Gigabyte Z77X-UP4 TH || ASUS OE
Cooling EK Supremacy, D5 w/ EK Top, 2X EK-CoolStream XTX 360 & Photon 270 Res || !PASSIVE!
Memory 16GB Samsung 'Wonder' RAM || 8GB LPDDR3 1600
Video Card(s) EVGA 780Ti Classified HydroCopper || Intel HD Graphics 5300
Storage 256gb Corsair Performance Pro, 2TB Caviar Green, 2TB Samsung F4 || Toshiba 256GB SSD
Display(s) DELL Ultrasharp U2715H 27" || 13.3" 1080P IPS
Case CaseLabs Merlin SM8 || Aluminum Unibody
Power Supply NZXT Hale-90-1000-M
Mouse Logitech M705 Marathon
Keyboard Corsair Strafe RGB w/ Cherry MX Silent
Software Windows 10 Pro x64 || WIndows 10 Home x64
Benchmark Scores WCG & F@H Only
#24
I've run similar on my Antec 750 which is on the same level, for the most part, as the Corsair- so I think you will be okay.
 
Joined
Sep 11, 2009
Messages
2,680 (0.89/day)
Likes
693
Location
Reaching your left retina.
#25
I run a 450 and a 460 and my 12V is down to 11.82.
Well that doesn't happen on my brother's 750TX and I hardly doubt is the norm for Corsair PSUs. Not that is terribly wrong btw, it's still well within the ATX specs and is still more than many brands offer, but all the reviews that I remember showed that Corsair PSUs are especially strong on that front, offering more than 12V in all load ranges (if anything you can blame them for overvolting rather than undervolting). I think you just got bad luck.
 
Last edited: