my CPU not stable after changing graphics card

[boldenc]

I have been running my pc for 1 month with a low end card HD4670, I passed all stability tests, intelburntest stable 50 passes with all memory usage, then I got new card HD4890, my CPU isn't stable like before, I can't pass intelburntest without freezing my pc or giving me error, I added more vcore and it was stable passing intelburntest 50 passes, so I think my PSU isn't giving the same juice like it was before with the HD4670. Currently I'm using the 2 fixed 6-pins PCI-E connectors, but there is 2 modular cables, should I use 1 of them as it is stated on the PSU V3 to related the first modular pci-e cable and V4 for the second modular pci-e

[jcniest5]

The new video card could be pulling out too much power. Perhaps try a more powerful PSU and see if it helps.

[boldenc]

If I plug the modular cables instead of the fixed, it can help?

[SoulsCollective]

I'd try using the different cables - you may be overloading that PSU channel. The Quattro 850 should have plenty of power for your system.

[icecpu]

sound like cpu degrade, every cpu degrade when overclocking, it's a matter of time,
some degrade faster than others, some take a year to degrade

[BeepBeep2]

The PCIE connector draws off the same rail, just use another one and it should be solved.

[boldenc]

I changed the PCI-E to the modular but it didn't help, I will still fail, seems like I didn't test stability like it should before, or maybe my cpu degraded?

[Humminn55]

This is how your rails are distributed, for reference:

+12V1 Y/Blk 4-pin ATX12V and 8-pin EPS12V

+12V2 Yellow All Peripherals

+12V3 Y/Blue Main 20+4-pin, 1st modular PCI-e, one of the fixed PCI-e connectors

+12V4 Y/Green 2nd modular PCI-e, one of the fixed PCI-e connectors



I'd try plugging in your video card's two power connectors into just the +12V4 rail (identified by the yellow cables with green stripe on them) and see if that helps.