Would an Antec 620W PSU support 2x Radeon 6870 (CF)?

G

Guest

Guest
Hi,

Just wondering if you guys know if the Neo Eco 620C would theoretically support 2 x 6870s. Currently I have one XFX 6870 (NOT OC'd) and the PSU only has 2x 6-pin connectors which each card requires. I have a friend that has an additional XFX 6870 and wants to sell it to me for around $80 so I can't go wrong there with the price. It would cost me much more to purchase a new 7970 single card or higher than to keep the PSU I have and buy this 2nd 6870 barely used card for so cheap.

So if I do go this route, my main concern is how much power each 6870 draws, adding a second one could make it come very close to maxing out this PSU. The single rail has 48A (+3.3V@24A, +5V@24A, +12V@48A, -12V@0.8A, +5Vsb@2.5A).

Since the PSU only comes with 2 x 6-pin connectors and I need a total of 4, obviously I'd have to use two of the 2 molex to 6-pin converters (such as this one).

Just wanted to make sure this PSU is sufficient to support a 2nd 6870 basically if I force it, even though it's not officially designed for this setup.

Edit: Forgot to add I have a 2500k OC'd at 4.5GHz currently. Only have 1 SSD, 1 storage drive and 1 blu-ray drive pulling power from it right now.
 
Solution
The microstutter and power drain do not seem worth it.
With that big OC on the cpu and the the 240 watts full load per GPU I would advise against this setup
G

Guest

Guest


What do you mean exactly by not worth it? Cost wise? Or it's too risky?