350 watt psu with a 450 watt gpu?

Grimme

Commendable
Nov 26, 2016
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I have a 350 watt PSU and im wondering if i can buy a 450 watt graphics card? Asus Geforce GTX 660 2gb
 
Solution
Not all 350W units are created equal. We need specs to be able to tell you.

What turkey is trying to say is when Asus says it needs a 450W PSU, they mean for the entire system. Going from memory the 660 is more of a 125W part, while the 660TI is a 150W part. But you need to take the CPU into account as well. My guess is you have a very basic 350W PSU and it won't run the 660 because it lacks the 6pin PCIe plug that's needed. But without specs I'm just guessing.


Even if you did buy a 450W rated GPU, which I can't think of one at the moment that is, you wouldn't have to get that large of a PSU unless you pinned everything in your system to max performance. Assuming that you only intend to game, this will never happen.

Just letting you know, OP, the rating that the GPU has for the PSU is a recommendation for the entire system, not just the GPU. even the power hungry 780ti and 980ti only consume 250 watts at max. Typically, they don't hit that type of power draw unless under a benchmark or GPU rendering.
 
Not all 350W units are created equal. We need specs to be able to tell you.

What turkey is trying to say is when Asus says it needs a 450W PSU, they mean for the entire system. Going from memory the 660 is more of a 125W part, while the 660TI is a 150W part. But you need to take the CPU into account as well. My guess is you have a very basic 350W PSU and it won't run the 660 because it lacks the 6pin PCIe plug that's needed. But without specs I'm just guessing.
 
Solution


Read our posts before you respond. We both understand and know that his GPU does not draw 450W itself. Reading would've told you this.
 


My bad.
 
The power requirement given is for the whole system not just the GPU, which uses 140-150W or so. Companies are very conservative with the requirements because they want to leave a lot of room because of the number of people with OEM PSUs or outright junk PSUs. If you have a quality 350W PSU, like a low-wattage SeaSonic, you'd likely be fine. If you don't, it depends just how poor your PSU is, but we'd need a lot more information than "350 watt PSU."