I recently upgraded my graphics card from a 560Ti to a 280x.
Upgrade initially went fine.
However... after running a stress test (Furmark and CPU stress test) with mild overclocking to the CPU, the computer will now freeze and restart every time a 3D application is started. I also tried putting my 560Ti back in the system, and this card causes the same problem now too.
I'm reasonably confident that I have overloaded the 12V output from my old PSU, and to this end have already ordered a gruntier replacement.
My question is, is there likely to be any other causes for this problem?
PC specs: AMD Phenom II 955 BE 2x2GB RAM MSI 880 GMA E45 motherboard Radeon 280X HDD, SSD, DVD etc...
(I know that my CPU/Mpbo is old... it is next on the upgrade list!)
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What PSU do you have? Make and model please.
Though, your CPU is likely to bottleneck your GPU.
Sorry PSU is ANTEC NeoEco 620W.
Yep, I know the CPU is bottlenecking the GPU - hence the overclocking.
The PSU looks good to me.
P.S.: the CPU will likely still bottleneck your GPU.