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What PSU for Crossfire HD6990 - Page 3

post #21 of 45
Quote:
Originally Posted by kTs KaoZ;12890240 
Rofl, I tought you meant my entire budget because I was looking all day for a new build. If I need to choose, I would pick the Corsair AX 1200 or the Antec HCP-1200

HCP1200 for sure over the AX1200, the AX100 actually released 105A on a multimeter once and it exploded.
    
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post #22 of 45
Quote:
Originally Posted by Lostintyme;12890286 
HCP1200 for sure over the AX1200, the AX100 actually released 105A on a multimeter once and it exploded.

Like thats going to happen.
AX1200. Amazing PSU.
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post #23 of 45
the Quattro 1000 or TX 950 is enough, and it'll save you some cash as well.
post #24 of 45
Quote:
Originally Posted by ZealotKi11er;12890315 
Like thats going to happen.
AX1200. Amazing PSU.
Says the guy using the AX1200 to power a system with one 6950 in it. AMD recommends a 500W for that:

http://www.amd.com/us/products/desktop/graphics/amd-radeon-hd-6000/hd-6950/Pages/amd-radeon-hd-6950-overview.aspx#3

You could have four 6950s in your system (that is, if your motherboard supports it, which I don't know because I didn't check).
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post #25 of 45
Quote:
Originally Posted by Lostintyme;12890286 
HCP1200 for sure over the AX1200, the AX100 actually released 105A on a multimeter once and it exploded.

Hahahah lol! Where did you see This? I wanna see it explode.
     
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post #26 of 45
A good 850-900W unit would be perfectly adequate. Forget about AMD's "requirements".
post #27 of 45
Quote:
Originally Posted by TwoCables;12890341 
Says the guy using the AX1200 to power a system with one 6950 in it. AMD recommends a 500W for that:

http://www.amd.com/us/products/desktop/graphics/amd-radeon-hd-6000/hd-6950/Pages/amd-radeon-hd-6950-overview.aspx#3

You could have four 6950s in your system (that is, if your motherboard supports it, which I don't know because I didn't check).

Does it matter how much i load my PSU? Its same as saying having 3 GPU to get 100fps is pointless because 1 will give you 60fps and that more then u will ever need. Also i will be getting 2 more HD 6950 soon and AX850 does not have 6 X PCIE connections for a reason.
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post #28 of 45
Quote:
Originally Posted by ZealotKi11er;12890732 
Does it matter how much i load my PSU? Its same as saying having 3 GPU to get 100fps is pointless because 1 will give you 60fps and that more then u will ever need. Also i will be getting 2 more HD 6950 soon and AX850 does not have 6 X PCIE connections for a reason.
In this case, yes it does because with PSUs it's very, very different - especially since you were responding to Lostintyme's post where he said: "HCP1200 for sure over the AX1200, the AX100 actually released 105A on a multimeter once and it exploded.". 105A on the +12V is 1260W. You're never exceeding more than maybe 30-35% of the AX1200's capacity which also means you're probably getting less than 80% efficiency:

On PSU Efficiency

PSU "50% Load" Myth

So yeah, it matters quite a bit.
Edited by TwoCables - 3/27/11 at 12:24pm
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It's a computer!
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CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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post #29 of 45
He's not getting less than 80% efficiency. And even if he was, all that would do is cause a higher power bill. It's not a big deal at all.
And what does ripple have to do with it?
post #30 of 45
Quote:
Originally Posted by Shub;12890826 
He's not getting less than 80% efficiency. And even if he was, all that would do is cause a higher power bill. It's not a big deal at all.
And what does ripple have to do with it?

A higher power bill is a big deal for some.
    
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