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Psu has wattage but isn't xf compatible

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January 20, 2014 7:26:12 PM

I have an evga 500b psu and I was looking to get a second 7770 to xf. Can I use a molex to pcie connector? Will my pc run well without a ton of extra strain on the psu? In other words can my psu handle 2 7770s an fx6300 and the other general computer components?

More about : psu wattage compatible

January 20, 2014 7:28:56 PM

The PSU has 2 x 6 pin cables and a 40A (+12V) rail. Should be fine w/o adapters. But let us know the make/model of the MB. If it has a 2nd gfx card slot that is only X4 electrically, it won't perform well.
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January 20, 2014 7:47:37 PM

Max Barbeau said:
Msi 970a g43.


That 970 chipset MB only has a X4 bandwidth PCIe X16 slot as its 2nd gfx card slot. It will work fine, but you will lose some bandwidth and may not make much difference from using the single card... depending on the game. Usually you want to look for a min of X8, X8 CF or SLI for best performance.

If you decide to add the 2nd card anyway, be sure to use the new 13.11 beta gfx driver to eliminate the phenomena of micro-stutter that often occurs with low end cards in CF: http://sites.amd.com/us/game/downloads/Pages/downloads....
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January 20, 2014 7:52:58 PM

Ohh also I do beeline the pcie connectors are to close together which I why I suggested the adapter. I don't think it'll have enough reach otherwise. But with 2 7770s it shouldn't really have an issue?
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January 21, 2014 12:16:32 PM

Max Barbeau said:
Ohh also I do beeline the pcie connectors are to close together which I why I suggested the adapter. I don't think it'll have enough reach otherwise. But with 2 7770s it shouldn't really have an issue?


If this is your PSU's cable assortment: http://www.evga.com/products/images/gallery/100-B1-0500...
...the PCIe aux cables look to be long enough to span 2 cards in their respective slots.
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