2x 7870 Tahiti on a single Antec 500W EarthWatts PSU?

King Mustard · Dec 24, 2013

3570K (not overclocked), 1x SSD, 5x HDD, 7870 Tahiti, Antec 500W EarthWatts PSU.

Runs absolutely fine.

Would it still run fine if I put a second 7870 Tahiti in here?

Bassim Ansari · Dec 24, 2013

No AMD recommends around 600W of PSU for sli 7870.

You'd be cutting it close with a 550W power supply but might just pull it off.

Your 500W is too risky and I would absolutely not risk it.

coozie7 · Dec 24, 2013

Possible but that power supply has only 2 PCI-E leads, CF will need 4 and it's a bad idea to run a powerful card like that off Molex/PCI-E converters, 4 pin Molex is designed to run low power peripherals, not high draw graphics cards.

King Mustard · Dec 24, 2013

Bassim Ansari :

I'll get a 650W+ PSU, then

coozie7 :

Ah yeh, good point - my PSU doesn't even support CrossFireX!

New PSU it is!

huilun02 · Dec 24, 2013

http://us.ncix.com/products/?usaffiliateid=1000031504&sku=59616&vpn=P1650SNLB9&manufacture=XFX&promoid=1223

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2x 7870 Tahiti on a single Antec 500W EarthWatts PSU?

King Mustard

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Bassim Ansari

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coozie7

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King Mustard

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huilun02

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