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Corsair 1000w enough?

Last response: in Components
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September 24, 2010 8:38:50 PM

Currently I have a Corsair 1000w which has been running solid for almost 2 years. I am building a new rig soon and my only question is what wattage for the power supply?

I want some headroom for growth and the system I am thinking about building is as follows:

i7 950 (will OC)
12GB ram or there about
2x GTX 470 (the verdict is still out, I am asking for opinions in another room)
10000rpm Velociraptor
3x Seagate 1TB HD
Xonar 1.3 Sound Card (might not need with video cards if they can bitstream)
LG Blu-Ray burner
LG DVD-RW
Not sure about the mobo yet though

I plugged the info into the calc on Newegg and it recommended over 1200w! Granted I put 2x 480 for ensured headroom but even with 470's it was over 1000w.

I have seen reviews all around that suggest with 470's in SLI and an i7 you need at least 800 but 900 with OC. Which is more accurate, the reviews or neweggs calc?

Thanks!

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a c 700 ) Power supply
September 24, 2010 9:02:36 PM

Yes it will be fine Newegg is a retailer and wants to sell you big! Here is a better calc http://extreme.outervision.com/psucalculatorlite.jsp
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September 24, 2010 9:45:46 PM

Ok, with 480's that site recommends under 1100 so a 1200 should be nice headroom.

Thanks!
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a c 248 ) Power supply
September 24, 2010 9:48:37 PM

Competent technical reviews usually provide fairly accurate power consumption results. Sometimes they even report actual power consumption while playing popular games on an overclocked system. Usually the power consumption while playing a game is lower than power consumption during an extreme torture test.

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September 24, 2010 10:26:06 PM

Ok, I feel obligated to say it, then gonna shut-up about it: this is a lot of money to invest in a machine when new sockets are just around the corner.

Now back to topic, most reviews I've seen set FutureMark stress test for GTX 480 in SLI at about 800W so you probably already have enough headroom. If you want even more headroom, you might want to consider using ATI cards, I think the same setup with 5870 is XFire will consume 200W less. Moreover, unless you plan on gaming at 2560x1600, such a setup is probably overkill.
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a c 700 ) Power supply
September 24, 2010 10:41:18 PM

Pyro2008 said:
Ok, with 480's that site recommends under 1100 so a 1200 should be nice headroom.

Thanks!

I just plugged your system in and get recommended 850 to 900watt with 2 x GTX480 in SLI based on configuration. The corsair HX1000 should be enough.
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September 25, 2010 1:03:10 AM

Zenthar said:
Ok, I feel obligated to say it, then gonna shut-up about it: this is a lot of money to invest in a machine when new sockets are just around the corner.

Now back to topic, most reviews I've seen set FutureMark stress test for GTX 480 in SLI at about 800W so you probably already have enough headroom. If you want even more headroom, you might want to consider using ATI cards, I think the same setup with 5870 is XFire will consume 200W less. Moreover, unless you plan on gaming at 2560x1600, such a setup is probably overkill.


Just around the corner, when would that be?

I know ATI is coming out with some new cards that might drop the price of the current selection but I hadn't heard about anything big coming from Intel.
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September 25, 2010 2:46:50 AM

Pyro2008 said:
Just around the corner, when would that be?
I think it's as soon as next year. As rolli59 pointed-out with the Wikipedia article reference, all SandyBridge CPUs will use new sockets; LGA1155 will replace LGA1156 and LGA2011 will replace 1366. How many Nehalem-based CPU will Intel still release (if any), nobody seems to know for sure.
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September 26, 2010 3:49:00 AM

Unless I am misunderstanding, it doesn't sound like 1366 will be replaced by 2011 until almost Q4 or possibly later.
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September 26, 2010 1:27:18 PM

Pyro2008 said:
Unless I am misunderstanding, it doesn't sound like 1366 will be replaced by 2011 until almost Q4 or possibly later.
Probably, they will start rolling-out server CPUs first. I was just saying because many people were expecting Nehalem's sockets to last as long as LGA775.
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a b ) Power supply
September 27, 2010 8:25:54 PM

An HX1000 is MORE than enough for what you have listed. Assume 200w for a moderate OC power rating for the MOBO+CPU. 470s are rated at a MAX of 220w stock. So, that is 640w MAX with an OCed CPU. All your other gear together might add 100w total if you were able to use it all simultaneously at full 100% load.

GPU Ratings: http://www.geeks3d.com/20090618/graphics-cards-thermal-...

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a c 248 ) Power supply
September 27, 2010 9:31:02 PM

XMSYellowbeard - Very nice reference you posted. I boomarked it for future reference.
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October 4, 2010 12:49:44 AM

Best answer selected by Pyro2008.
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