Will this push 2x7870s? I have 750w that I am going to put in a new build for 2x270x Crossfired, and currently have 2x7870s Crossfired.

Just need to know if this will handle those 2 7870s or if it will crash and burn.

Thanks in advance!!

Question

Will this push 2x7870s? I have 750w that I am going to put in a new build for 2x270x Crossfired, and currently have 2x7870s Crossfired.

Just need to know if this will handle those 2 7870s or if it will crash and burn.

Thanks in advance!!

Accepted Answer

Go hear to get a better idea of what PSU requirements you need.

extreme(dot)outervision(dot)com(slash)psucalculatorlite.jsp

In addition, you'll need to validate that the PSU has all the right connectors (and enough of them). Some of the higher end video cards require 2 PSIe Power Connects (so 4 connects for 2 cards).

Also, you'll want to look at the maximum OUTPUT of each rail (+12, +3, ...) and take a look at the amperage requirements of your video cards IN ADDITION to the rest of your components.

An example. asus(dot)com(slash)Graphics_Cards(slash)HD7870DC22GD5V2(slash)#specifications

says that it requires 2 PCIe connectors, and a max of 225W (which is 225Watts/12Volts = 18.75Amps).

This PSU can supply +12V@49A which means, with 2 7870's, you have 11.5 remaining Amps for other components that use the 12V rail (which includes HDD/SSD/FANs, etc).

In addition, electrical safety standards say that you shouldn't have constant load at max capacity. Spikes to max are ok, but constant load should be 30% less than max.

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