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post #11 of 40
Thread Starter 
Quote:
Originally Posted by LOL_Wut_Axel;13635893 
No, that's wrong. Your Corsair HX650 has great internals and will handle a Radeon HD 6870 CrossFire with your OCed CPU just fine. FYI, you shouldn't trust information from your power meter alone, as it tells you the power consumption at the wall. To see what the PSU really needs to output, you need to calculate taking into account its efficiency.

Two Radeon HD 6850s at full load consume around 260W, a heavily OCed Core i5 (first gen) will consume around 175W at full load, and for peripherals that's 50W. That's a total of around 485W at the wall, or 412W taking into account 85% efficiency. Your current PSU won't break a sweat, but the OP's will, because in reality it's a low quality rebadged 350-400W PSU.

Hope that helps.

I actually found the Antec NEO ECO 620C in a store here, but it says its not crossfire/sli ready, any other suggestions?

Edit: I just saw your last post smile.gif, what about OCZ StealthXStream 600W PSU?
Edited by WildEast - 5/25/11 at 3:33pm
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post #12 of 40
the certification of sli/cf on a psu doersnt determine its quality.
but it can do it.
heck. even a good 500w will do it with around 15% of headroom left depending on how big its 12v rail is.
     
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post #13 of 40
Quote:
Originally Posted by WildEast View Post
I actually found the Antec NEO ECO 620C in a store here, but it says its not crossfire/sli ready, any other suggestions?

Edit: I just saw your last post , what about OCZ StealthXStream 600W PSU?
it is just an average unit. based on a sirfa unit iirc.
the anteo neo eco is a seasonic m12ii based unit iirc.
     
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post #14 of 40
Quote:
Originally Posted by WildEast View Post
I actually found the Antec NEO ECO 620C in a store here, but it says its not crossfire/sli ready, any other suggestions?

Edit: I just saw your last post , what about OCZ StealthXStream 600W PSU?
OCZ StealthXStream is only adequate; I don't recommend you get it. SLI/CF certification doesn't mean anything as long as the PSU is a high quality unit, and the NEO ECO 620C leaves the StealthXStream 600W in the dust in all aspects; most importantly electrical quality.

And BTW, the NEO ECO 620C is certified for both CrossFire and SLI. What price is the NEO ECO 620C you were looking at?
    
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post #15 of 40
Thread Starter 
Quote:
Originally Posted by LOL_Wut_Axel View Post
OCZ StealthXStream is only adequate; I don't recommend you get it. SLI/CF certification doesn't mean anything as long as the PSU is a high quality unit, and the NEO ECO 620C leaves the StealthXStream 600W in the dust in all aspects; most importantly electrical quality.

And BTW, the NEO ECO 620C is certified for both CrossFire and SLI. What price is the NEO ECO 620C you were looking at?
Many reviews on newegg says its not certified, but as long as it doesn't matter it'll be fine I guess.
Thanks for the help guys.
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post #16 of 40
Quote:
Originally Posted by WildEast View Post
Many reviews on newegg says its not certified, but as long as it doesn't matter it'll be fine I guess.
Thanks for the help guys.
Reviews on Newegg are not really for what you should be looking at if you want to know info regarding a product, unless it's an issue that is affecting everyone.

Also:


    
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post #17 of 40
Quote:
Originally Posted by LOL_Wut_Axel View Post
No, that's wrong. Your Corsair HX650 has great internals and will handle a Radeon HD 6870 CrossFire with your OCed CPU just fine. FYI, you shouldn't trust information from your power meter alone, as it tells you the power consumption at the wall. To see what the PSU really needs to output, you need to calculate taking into account its efficiency.

Two Radeon HD 6850s at full load consume around 260W, a heavily OCed Core i5 (first gen) will consume around 175W at full load, and for peripherals that's 50W. That's a total of around 485W at the wall, or 412W taking into account 85% efficiency. Your current PSU won't break a sweat, but the OP's will, because in reality it's a low quality rebadged 350-400W PSU.

Hope that helps.
But the review at guru3d says one 6850 needs 280 at full load. With one card according to watt meter my PC consumes 380 at max pressure (used OCCT psu test). So even considering the efficiency I think I would be very close to max capacity of my hx650

EDIT: Sry, I haven't looked thoroughly at this review. It indeed says 245 Watts for 2x6850. I might give it a go. Since 6850 are cheap now
Edited by XSCounter - 5/25/11 at 3:50pm
post #18 of 40
A quality 550W could do it.

Your CoolerMaster doesn't qualify.
post #19 of 40
Quote:
Originally Posted by XSCounter View Post
But the review at guru3d says one 6850 needs 280 at full load. With one card according to watt meter my PC consumes 380 at max pressure (used OCCT psu test). So even considering the efficiency I think I would be very close to max capacity of my hx650
No, you're wrong. The Guru3D review has 280W SYSTEM load, at the wall. If you look at card load, they only got 120W at the wall. Let's assume you've done a heavy OC on stock voltage, and it'd be around 150W ATW.

If you add another 6850 OCed by the same amount, you're looking at adding 150W at the wall. Taking efficiency into account, that's 450W your PSU has to produce. Your current 380W is at the wall. An HX650 is good for up to a Radeon HD 6870 CrossFire with no problems. The PSU won't be pushed to more than 80% of its rated specs.
Edited by LOL_Wut_Axel - 5/25/11 at 3:57pm
    
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post #20 of 40
Quote:
Originally Posted by LOL_Wut_Axel View Post
No, you're wrong. The Guru3D review has 280W SYSTEM load, at the wall. If you look at card load, they only got 120W at the wall. Let's assume you've done a heavy OC on stock voltage, and it'd be around 150W ATW.

If you add another 6850 OCed by the same amount, you're looking at adding 150W at the wall. Taking efficiency into account, that's 450W your PSU has to produce. Your current 380W is at the wall. An HX650 is good for up to a Radeon HD 6870 CrossFire with no problems. The PSU won't be pushed to more than 80% of its rated specs.
Got it now, thanks +rep!
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