Will 500w PSU work w/ a Geforce 780TI? (Min 600w PSU req. by manf)

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salmedina87

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Dec 2, 2013
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Working on a mini ITX rig and was thinking of picking up the EVGA hadron case. I was pairing this up with a Geforce 780TI SuperClocked. Per the specs you need a minimum of a 600w psu. The case comes with a 500w psu. I've seen some custom builds on that case with a 780ti installed and im not sure if the supplied PSU with the case is going to be an issue for the 780TI or if is should just start looking for a new case?
 
Solution
rwpritchett
Although Nvidia recommends a minimum 600W power supply, the 780ti does not need 600W. The 780ti draws 269W at peak (source). That translates to about 23A needed on the +12V rail.

So, to answer your question about whether a 500W PSU is enough. The answer is... maybe.

It depends on what else you've got drawing from the +12V rail. Please post your complete system specs as well as the exact make & model of 500W PSU you have. A good quality Corsair 500W PSU can easily power a single 780ti. A 500W Coolmax will blow up on you.

Based on the 780ti required peak current, you would probably be OK if your 500W PSU has >34A on the +12V rail.
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enemy1g

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Oct 3, 2013
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For example, would you run your car with 3.5 quarts of oil when the manual specifies that it requires 5?

No. You risk damaging parts and you'll end up needing to replace a whole lot.

Get a bigger PSU or a better case.
 
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rwpritchett

rwpritchett

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Mar 17, 2006
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Although Nvidia recommends a minimum 600W power supply, the 780ti does not need 600W. The 780ti draws 269W at peak (source). That translates to about 23A needed on the +12V rail.

So, to answer your question about whether a 500W PSU is enough. The answer is... maybe.

It depends on what else you've got drawing from the +12V rail. Please post your complete system specs as well as the exact make & model of 500W PSU you have. A good quality Corsair 500W PSU can easily power a single 780ti. A 500W Coolmax will blow up on you.

Based on the 780ti required peak current, you would probably be OK if your 500W PSU has >34A on the +12V rail.
 
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Squid_1138

Squid_1138

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Feb 1, 2016
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Im not the OP but I need the answer to this as well.
CPU: AMD Athlon X4 860k 4.3GHz OC
RAM: HyperX 8GB(1x8) DDR3
PSU: EVGA 100-W1-0500-KR 500W
Mini ITX mobo
2 HDD
4 120mm fans
 
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