PCI-E 2 PSU OK for PCI-E 3 graphics card?

[DKDKDK]

Hello, I have built a new system, using a friends old PCI-E 2.0 graphics card and now I'm thinking a new graphics card might be nice.

The new card is a ASUS nvidia GTX660 o/c and it says it needs "up to 150W 1 additional 6 pin PCIe power required", it's PCI-E 3.0.

Spec link www.asus.com/Graphics_Cards/GTX660DC2O2GD5/#specifications

I have an Enermax Modu 82+ 625W EMD625AWT PSU and it comes with cable EMC014, which is 6+2P PCI-E 2.0 cable.

Can I use this PCI-E 2.0 power supply with the new PCI-E 3.0 card? If not, will I have to get a new PSU as well?

Thanks in advance

[My setup is MSI Z77A-GD65, i5 3750K, 8Gb 1600 RAM]

 

[clutchc]

You will be fine. The only reason the PSU says PCIe 2.0 is because there was no 3.0 when it was sold. PSUs aren't PCIe version dependent.

 

[DKDKDK]

Thanks something else I'm curious about. I know it's getting on a bit now, the PSU, but it says on the box, 10P and 12P for possible upcoming connector generations. Are those ever likely?

 

[clutchc]

If you're referring to the 12 pin connectors on the PSU for "future" graphic cards and processor power, I doubt it. The trend is for doing more with less power rather than more power. Today's cards w/a single 6 pin connector for instance, can outperform a card from a few years ago that required 2 x 6 pin connectors. And Intel's 35W processors are outperforming 125W processors of a few year ago, as well.

There may be a situation where you would need to feed several cards, in which case multiple connectors would be needed. But a 625W PSU isn't going to be able to power more than one hi-performance card or a couple mid range cards.

 

[DKDKDK]

Thanks

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