SLI 7870 Question

90 Orc Warrior
2315
Is 750 watts enough to SLI 7870's? I also have a 3570k, 8gb ram, 24" 1080p monitor.
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100 Blood Elf Paladin
9210
750W is more than enough for CrossFireX 7870

However, depending on your motherboard, the second HD 7870 may or may not work at full speed.

I will also note CrossFireX / SLi is not something that I would consider doing on a single monitor setup.
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90 Orc Warrior
2315
Alright thank you and my motherboard is the z77 gigabyte ud3h and why not?
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100 Blood Elf Paladin
9210
Some motherboards have gimped 2nd PCI-E 16x slot.

Your motherboard has proper non-gimped second PCI-E 16x slot for CrossFireX / SLi, so it'll be OK.
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90 Orc Warrior
2315
How much of an increase in performance would I get in WoW?
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100 Blood Elf Paladin
9210
Not as much as you might expect. WoW benefits from CrossFireX / SLi, but not as well as games using modern game engine.

I'd expect about 70~80% increase (assuming 100% being equal to 2x the performance of single card).
Edited by Kalganized on 11/26/2012 11:18 PM PST
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90 Orc Warrior
2315
alright man thank you. Any idea if two 7870's can even fit in a haf x 912?
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100 Blood Elf Paladin
9210
It should fit.
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90 Orc Warrior
2315
Alright, thank you for all of your help:)
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