Tom's Guide > Forum > Graphic & Displays > Graphics Cards > Will a Xigmatek 850W Power Cf HD4870X2?

Will a Xigmatek 850W Power Cf HD4870X2?

Forum Graphic & Displays : Graphics Cards - Will a Xigmatek 850W Power Cf HD4870X2?

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bnbader   08-23-2008 at 01:44:09 AM

Will a Xigmatek 850W Power Cf HD4870X2?

Ill have a:

Q9550

P5E Deluxe

4GB 800MHZ

HD4870X2 Cf

Termaltake 8003BWS Full tower

Xigamatek S1283 + Bracket

Xigmatek 850W

Asus DVD Burner

Special lights and stuff.

Will the power supply power the system?
Can you guys recommend a UPS for this system please.


Thank you!

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mikew   08-23-2008 at 02:56:05 AM
- 0 +

To Crossfire 2 of those... Not by the looks of this list: http://game.amd.com/us-en/crossfir [...] s.aspx?p=3

Reply to mikew
invisik   08-23-2008 at 03:20:36 AM
- 0 +

looks strong enough to me. =]

+3.3V@30A,+5V@30A,+12V1@18A,+12V2@18A,
+12V3@30A,+12V4@30A,-12V@0.8A,+5VSB@3A

------------------------------ intel core 2 quad q6600 @3.2ghz msi p6n diamond (X-FI Extreme sound) 6gig of OCZ+CoRSAIR oc 900mhz Nvidia gtx 260 sli @ 730/1465/1250
Lite-On Blue-ray Western Digital 7200rpm 500gb Antec 500 Earthwatt Window vista 64-bit
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bnbader   08-23-2008 at 05:29:13 AM
- 0 +

So will it be enough or not? Can someone conferm?

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V3NOM   08-23-2008 at 05:33:19 AM
- 0 +

will you be overclocking or watercooling the 4870x2's?

Reply to V3NOM
bnbader   08-23-2008 at 05:36:51 AM
- 0 +

Well maybe OCing a little bit... But no WC

Reply to bnbader
ghostmann   08-23-2008 at 05:42:52 AM
- 0 +

Sorry you need at least a 1kw power supply. If you look at any of the manufacure websites they require 650w for 1 card and 1kw for 2 cards.

Reply to ghostmann
ghostmann   08-23-2008 at 05:43:23 AM
- 0 +

Sorry you need at least a 1kw power supply. If you look at any of the manufacure websites they require 650w for 1 card and 1kw for 2 cards.

Reply to ghostmann
bnbader   08-23-2008 at 05:45:28 AM
- 0 +

How can that be? The card doesn't take 350W of power.... It takes at maximum load 270W. So...

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V3NOM   08-23-2008 at 05:49:14 AM
- 0 +

^hes using 2 of em

Reply to V3NOM
V3NOM   08-23-2008 at 05:50:09 AM
- 0 +

dude just go onto the thermaltake website and use their power supply calculator... select the parts you're using and there you go

Reply to V3NOM
IndigoMoss   08-23-2008 at 05:50:23 AM
- 0 +

I do not see why your XIGMATEK MC NRP-MC851 850W would not power 2 4870X2 in CF. On AMD's website of recommended power supplies, they list the Xscale EP-750P3A as one of the recommended power supplies.

It has +12v1 20a, +12v2 20a, +12v3 20a, +12v4 20a. With a total wattage of 750w.

Your PSU is very comparable to that one, and it's on the recommended list.

I don't see any reason why not, but maybe TheGreatGrapeApe or someone else can provide some more insight.

Reply to IndigoMoss
bnbader   08-23-2008 at 06:01:14 AM
- 0 +

Ok so i did the calculation on thermaltake and it turned out 680W... So do you guys think im gonna be set?

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V3NOM   08-23-2008 at 11:06:29 AM
- 0 +

certainly. did you also take into account 100% system load and an overclocked processor/slightly overclocked 4870x2's?

Reply to V3NOM
Disco_Maleta   08-23-2008 at 01:55:36 PM
- 0 +

It's going to run, but you'll probably push it to the limit which is not good of course :non:
Go with a 1k as it leaves room for the PSU to breathe

Reply to Disco_Maleta
bnbader   08-23-2008 at 04:58:27 PM
- 0 +

How much room will i leave?

Reply to bnbader
bnbader   08-23-2008 at 04:59:03 PM
- 0 +

How much room will i leave?

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