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GTX 780 on 600Watt PSU

Tags:
  • Gtx
  • FSP
  • Power Supplies
  • Graphics
  • GPUs
Last response: in Graphics & Displays
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Anonymous
June 12, 2014 1:12:58 PM

I have been reassured that I can run a GTX 780 on my 600 Watt FSP 50ARN PSU. However I've been looking at some benchmarks that state the Zotac 780 3GB GPU can draw 449 watts at full load. If this is the case I am not sure my PSU has got what it takes.Extreme Power supply calculator with 100% peak load recommends 519 watts. Is my PSU enough?

Specs:

15 4670K (non OCed)
Asaka Nero 3 cooler
Asus Z87-K Mobo
8GB Ram
600W FSP 50ARN PSU
120GB SSD
1TB HDD
1 PCI card
10 Watt USB 2.1 speakers
Asus VS239Hv IPS monitor

Benchmarks:
http://www.hardwareheaven.com/2013/05/zotac-nvidia-gefo...

More about : gtx 780 600watt psu

Best solution

a b ) Power supply
June 12, 2014 1:17:34 PM

Your PSU will be more than sufficient. Those results are for the entire system, not just the GPU.
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a b ) Power supply
June 12, 2014 1:18:59 PM

I would consider a better quality power supply but in theory the amps on the 12V rails is enough. You have 42 amps give or take on your 12V rails which will supply 504 Watts
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Anonymous
June 13, 2014 4:12:15 AM

Thanks for the help. I dont really understand the whole 12 V rail business. Are my 12 V rails solely for the GPU or cpu and gpu or the whole system? If my 12V rails give a theoretical 504 Watts how does that relate to the recommmended 519 Watts given by Extreme Power Supply calculator?

I know I am dwelling on the whole PSU issue too much but if I have to swap out my PSU I reckon I will have to settle for the 770 upgrade.
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a b ) Power supply
June 13, 2014 5:10:33 AM

Most of your pc will take power from the 12V rails. The psu calculator is slightly exaggerating with the power consumption. The gtx 780 with other components will take 449 Watts. However the quality of your power supply is something different.
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Anonymous
June 13, 2014 6:41:00 AM

I tend to hear generally good things about FSP power supplies. Is the 50 ARN a poor model?
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