Would this baby be enough for the rig am about to set up (considering OCing it btw)? :
Intel Core i7 920 D0 Step (not sure if it matters)
Asus P6T Deluxe V2
OCZ 6GB (3x2GB) DDR3 1600MHz Triple Channel
ATI Radeon 4890 1GB (still havent decided which brand.. between XFX, Asus and Saphire, but shouldnt make a difference)
After those, I will probably have hooked up 3-4 SATA HDDs, 3 case fans probably, some leds, and thats about it.
620W should be more than enough I suppose? Should i go for even more W?
Yes the 620HX is suffice for that setup...
But if you are planning to add 1 more 4890 in crossfire, then the 620 wont be suffice...
If you are not particular about the modular PSU, then get the Corsair 750TX...it is not modular but is cheaper than the 620 and can handle 2 4890 in crossfire...
gkay09 - I don't have any references showing power consumption for single or dual 4890 video cards. The THG article and the Atomic web site both stop at 4870 cards. Do you have any references?
Well the PSU calculator have included the 4890s into the graphics card list now...Sure they don't give you the correct power consumption but still they give a rough idea...
But here is a chart that could help...
http://benchmarkreviews.com/index. [...] itstart=12
Message edited by gkay09 on 05-05-2009 at 07:05:43 AM
gkay09 - I don't have any references showing power consumption for single or dual 4890 video cards. The THG article and the Atomic web site both stop at 4870 cards. Do you have any references?
According to xbitlabs, HD4870 is 130W and HD4890 is 120W.
Yes the 620HX is suffice for that setup...
But if you are planning to add 1 more 4890 in crossfire, then the 620 wont be suffice...
If you are not particular about the modular PSU, then get the Corsair 750TX...it is not modular but is cheaper than the 620 and can handle 2 4890 in crossfire...
HX620 doesn't have the proper connectors for 2 HD4890, but it would have no trouble handling them.
on the other hand if it doesnt have 2 connectors for the HD 4890, then it limits me for future crossfire configuration (which i would like to have JUST in case)..
according to the site you posted, it needs 268W under load, assuming you are also going to overclock it, it would need a bit more i guess..
i really liked the modular idea.. more space, better airflow, you know..
but assuming it wont be able to take 2 HD4890s, what are the other options i have besides the 750TX, which are also modular?
on http://ati.amd.com/certifiedPSU the HX620W is listed under certifiedPSUs with 2x3 power connectors, but from your posts i assume the 4890 needs an x4?
well, it might be worth the try to use a molex and a 6pin on each card, thats what im going to do when i get my 2nd 4870, i don't think it would be a problem
ombadboy - Connectors are not a problem. Most video cards come with an extra power cable adapter. If not, they are available from online vendors for a few dollars.
Hey Guys - I think you might be getting a little carried away. I'm saying that based on the power requirements of two video cards. Based on info provided by theAnimal two 4890's will use about 235 watts combined. The OP mentioned an overclocked Core i7 system which will draw another 275 watts according to THG. The total power draw during a gaming session is only 510 watts.
Ill see how the prices of the 750TX is.. (although not modular), and if there's not much difference id probably go for that.. or might consider the Silverstone ones posted above..
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