Asus GTX 560 framerate problems

[yeroman]

Hey guys I really, really need your help.

I had a GTS 250. Games were running smoothly on high settings on 8x AA until suddenly every games ran below 20 FPS. So I bought an Asus GTX 560 and I thought everything will run smoothly again. But I was wrong. I'm still getting below 30 FPS - even on 4x AA! I'm assuming the culprit's my 500W CoolerMaster CPU?

I looked around the internet and found out that my card should have been connected to two 6pin connectors. My PSU came with only one so I plugged the other 6pin that my card came with to two 4pin molex..

My system runs on Core i5 760 and 4GB (2x2 GB) RAM.

 

[Ivan the SoSo]

Both the old and new card requires a 600 watt power supply.....So low power could/maybe be the problem.....

 

[yeroman]

That's what I suspect as well. Or maybe it short circuited or something because I used to play NBA 2k11 on 8x AA on high settings, crowds, bench, players, etc with even hi-res texture packs. Now it struggles even on medium settings on 4x AA..

But how can I tell if it's a PSU failure or a motherboard failure?

 

[Ivan the SoSo]

A power supply loses about 10% of it's output per year..,..The only way is to try a known good 600 watt power supply, also those molex to six pin adapters are problematic as well....

 

[yeroman]

Thanks, man! I'm looking out for some good PSU's now.. I really hope it's not the motherboard..

 

[Seven Eleven]

At stock speeds 560 Ti requires 500 Watt PSU minimum, not 600.