Will GTX 780 work on a 600W/45A Thermaltake PSU

y2thez

Reputable
Mar 19, 2014
7
0
4,510
Hello,
I would like to buy the following VGA:
MSI GeForce Gaming N780 TF 3GD5/OC GTX 780 3GB DDR5 PCIe

Based on its specs, it requires a 600W PSU and 42A on the 12V rail.

I have the following PSU:
http://www.thermaltake.com/products-model.aspx?id=C_00001775

You can notice that it has a peak power of 600W and a 45A combined on the 12V rail.

I have 2 questions:

1) Will my PSU support it? or will I have to get a new one
2) in case I buy it without changing the PSU, will it hurt the VGA if I try it and the PSU does not support it? what would happen? the VGA stops running or will it run in lower performance? And is there a way I can make sure that The VGA can run on full performance on it? like benchmarking or something?


Thank you very much for any clarification

 

clutchc

Titan
Ambassador
Personally, I think you'll be fine. The PSU has the specs to support the card and the necessary 6/8 pin connectors. Unless you have a ton of other +12V devices running, you should be fine. The next biggest load on the +12V rail would normally be the CPU. What is yours?

Generally what happens when the PSU is marginal, is that the system will shut down or re-boot when it can't maintain the proper voltage due to overload. Nvidia's disclaimer about PSU size is a bit high, because they can't tell what the end user will have for a PSU. They assume the worse.