ATi HD 3870 X2 (R680); Official Specifications & Images

[Origin_Unknown]

even if the quad is oced to 3.6ghz?

i'd say so. my e6600 @ 3.6 with 8800gts was only sucking ~350w (tested with power meter)

[realsmasher]

why 850W ?

1 3870x2 is like 200W max
1 Q6600 is NEVER above 200W, more like 100-150W
Mainboard+other stuff < 100W

if you count that together you get 700W max, but probably even 600W would fit.

ok, add some more for safety, but 850W is not necessary.

Of course it all depends on 12V lane(s), but that's another point.

[Unbornchild]

why 850W ?

1 3870x2 is like 200W max

Are you sure? I thought 230 W.
Anyways, it is not the Watts alone that counts, it is the amperes on the 12v rails.
My CM M850 (ATX 2.3) is good for my rig + 2x R680 in CF and Overdrive... it has 2x 8-pin plus 2x 6-pin...

[realsmasher]

of course 850W is nice, but much more expensive then good 700 or 750W or whatever.

230W is too much i think.
3870cf is tad over 200, so take away redudance of voltage regulator and stuff it should be 200 max.

But well, even if it's 210 or 220, it does not really matter.

[mascaras]

MSI Radeon HD 3870 X2 OC Graphics Card Review

>> http://www.tweaktown.com/reviews/127...ion/index.html




and a article about PCI-E 2.0 & CF

Crossfire meets PCI Express 2.0 - More Lanes, More Frames?

http://www.tomshardware.com/2008/01/...ess/index.html

regards

[STaRGaZeR]

MSI Radeon HD 3870 X2 OC Graphics Card Review

>> http://www.tweaktown.com/reviews/127...ion/index.html




and a article about PCI-E 2.0 & CF









regards

Very nice Tom's, since when HD2900XT supports PCI-E 2.0?

[v_rr]

Very nice Tom's, since when HD2900XT supports PCI-E 2.0?

HD 2900 XT suport PCI-E 2.0
There was a picture of the 1Tf computer that AMD showed with 2x HD 2900XT in crossfire with only 1 pin conected to each card instead of 2.
PCI-E 2.0 permit to transport more power into the card throught the PCI-E slot.