Random crashes after upgrade to i7-870

z0ttel · #1 05-07-2011, 09:19 AM

The PSU is only half a year old, so at least its internal design should be up to date

I've bought the PSU because of its specs on the 12V rails, there it is able to deliver up to 90A (20A/20A/25A/25A). Now I've seen that the combined max power on the 12V rail is limited to 45A (540W), that could be the cause for the problem.

z0ttel · #2 05-07-2011, 11:26 AM

Hmm, let's do some math: assuming the CPU needs about 120W in worst case scenario and the GPU needs 210W, also in WC, then we have 330W at all, there would be still 210W 'left' for the rest of the system.

Considering that not all of that power is drawn from the 12V line, the real consumed power on the 12V line will be lower. So I don't understand the argumentation that a more powerful PSU should help?

PzMeyer · #3 05-08-2011, 12:07 AM

I run my I5 750 and a gtx560 with a be quiet straight power 450w of the old e5 series.

dont trust them that you need a always a 800 w psu. thats bullshit.
i work for a huge hardware seller and i know that even gtx570 run well with a good brand mark psu with about 550 or 600w. its all about effeciency.

However, it could be that your psu is damaged. you still have warranty. the dark power series is able to run even two midclass cards in SLI without problem. its all about combined ampere in rail and not the max power output.