good video cards that will run on my power supply? Amps on 12v Rail are a bit low it seems

Dingo_Warrior · Mar 12, 2014

Here are the specs

Alienware NPS-750AB-1 750W ATX Power Supply

General Features:
Output Power: 750 Watt
Input Voltage: 100 - 240V ~ 10A, 50/60 Hz
80 PLUS Compliant
Typical Efficiency (50% Load): 83.88%
Average Efficiency: 81.63%
One (1) 24-pin ATX Connector
Seven (7) Large Molex Connectors
Six (6) Serial ATA Connectors
Four (4) 6-pin PCI Express Connectors
One (1) 4-pin 12-Volt ATX power connector
One (1) 8-pin EPS + 12-Volt power connector
Maximum Combined Power on +5V and +3.3V Output is 150W
Maximum Combines Power on +12VA, +12VB, +12VC, +12VD Output is 700W

Specifications:
+5V / 16.0A
+5VFP / 3.0A
+12VA / 18.0A
+12VC / 18.0A
+12VE / 18.0A
-12V / 0.2A
+3.3V / 30.0A
+12VB / 18.0A
+12VD / 16.0A

Spectre694 · Mar 12, 2014

That is a mess of a power supply with 5 12V rails. do you have any idea which connectors are on which rail?

Dingo_Warrior · Mar 12, 2014

Im not sure to be honest

Spectre694 · Mar 12, 2014

Dingo_Warrior :

ehh do you know what it came with? It looks like something like two 760 or one 780ti should work based on the connectors but it is hard to tell with that many rails.

Dingo_Warrior · Mar 12, 2014

Here is link to exact same power supply that I have. http://www.ebay.com/itm/PSU-Dell-Alienware-NPS-750AB-1-ATX-750W-PSU-Power-Supply-Unit-with-Harness-/111277645359?pt=PCA_UPS&hash=item19e8aa1e2f I was unable to run a gtx 580 or gtx 480 on it. Im currently running a gtx 295 with only 1 of the 2 gpus working, im thinking due to power supply.

Spectre694 · Mar 12, 2014

Dingo_Warrior :

If you were unable to get either of those to work then any 760 or higher probably won't work. Sounds like the PSU is either junk or more likely those rails just aren't strong enough they way they are set up. I would get a new power supply if it is any good it should only have just one 12V rail instead of 5.

If you want you can post your CPU specs and I will recommend one.

Dingo_Warrior · Mar 12, 2014

I have a i7 920 2.67 ghz stock 6 gb ddr3

Spectre694 · Mar 12, 2014

Dingo_Warrior :

Sorry should have said Comp not CPU. I need

CPU:
RAM:
HDD/SSD
GPU: (planed and current)

Dingo_Warrior · Mar 12, 2014

Its an Alienware Area 51 x58 computer. Has I7 920 2.67 Ghz Processor, 6 Gb DDR3 1066 I beleive speed. 80 gb solid state and a 2 Tb regular Harddrive . Im running a gtx 295 but only 1 of the gpus is active. I would like to run a gtx 580.

I think the power supply is the reason one of the gtx 295 gpus is disabled.

Spectre694 · Mar 12, 2014

Dingo_Warrior :

Well something like this would be the minimum I would get
http://pcpartpicker.com/part/evga-power-supply-100b10600kr

I would recomend something like this for a little extra room in the future.
http://pcpartpicker.com/part/evga-power-supply-120pg0650gr

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good video cards that will run on my power supply? Amps on 12v Rail are a bit low it seems

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