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power supply for X1950XT

post #1 of 21
Thread Starter 
I'm purchasing the following components, and I'm wondering if my existing 420W (18A across the 12V rails) is going to be sufficient. It is model HPC-420-102DF (which says Thermaltake PurePower on the label, but when I do a google on that part number it comes up as a High Power?!)

- INTEL CORE 2 DUO E6400 2.13 GHZ EM64T 1066MHZ RETAIL BOXED BUNDLE

- MSI 945P NEO3-F

- Sapphire ATI Radeon X1950XT 256MB 2DVI/VIVO PCI-Express Video Card, OEM


Or should I purchase this? http://www.rexususa.com/11500.html which is listed as a 500W power supply with 20A across both 12V rails? I do have 3 hard drives in the case. 2 in RAID0.

Any advice would be greatly appreciated!
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post #2 of 21
Uh.... that isnt enough rails.. 30+ A would work. But that just wont cut it.
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post #3 of 21
Thread Starter 
Quote:
Originally Posted by Death View Post
Uh.... that isnt enough rails.. 30+ A would work. But that just wont cut it.

30A ?! yowza!


Thanks, I guess I'll go buy a power supply. Any suggestions?
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post #4 of 21
After OC, My system Use almost 33A with That Card.
Get a PSU having 35A+ on 12v.
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post #5 of 21
Quote:
Originally Posted by chaos40 View Post
30A ?! yowza!


Thanks, I guess I'll go buy a power supply. Any suggestions?
That powersupply you linked to has 40a across both rails it would work but I dont know of that brand.

http://www.newegg.com/Product/Produc...82E16817104954

Thats a pretty good psu and has 36a across both rails should be enough to power your system and gpu.
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post #6 of 21
Fortron makes excellent PSUs.
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post #7 of 21
http://www.newegg.com/Product/Produc...82E16817153037
This will do it. Its just for the GPU.

pink
post #8 of 21
Quote:
Originally Posted by chaos40 View Post
I'm purchasing the following components, and I'm wondering if my existing 420W (18A across the 12V rails) is going to be sufficient. It is model HPC-420-102DF (which says Thermaltake PurePower on the label, but when I do a google on that part number it comes up as a High Power?!)
I think you mean 18A on each Rail right??? That's 36A total... which should be fine...
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post #9 of 21
Whatever u do, don't get a no name PSU ,,

get something from Antec or thermaltake ,

no name brands can lie about dat ampage ,,
    
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post #10 of 21
Quote:
Originally Posted by chaos40 View Post
I'm purchasing the following components, and I'm wondering if my existing 420W (18A across the 12V rails) is going to be sufficient.
Best bet is to get a 600w or higher PSU. At that range they come with active PFC (so needed to eliminate ripple, and spikes and drops if you don't have a line conditioning UPS), and enough juice for most videocards and RAID setups.

Also stay away from modular PSUs, as their wires can't maintain a continuous power supply to a very power hungry videocard -- it can brown out.

I picked this Seasonic because it was cheaper than the PC Power and Cooling PSU, yet still rock solid on the rails. Currently have the P4 3.2Ghz, 4 sticks of memory, 3 ATA HDD, a power hungry 9800/128MB video card, audio card, DVD, floppy -- still the rails aren't out of spec (fluctuates maybe 0.3 max between cycles, not 3.0). Also love the 120mm/800rpm quiet fan, short wires (just enough to fit those Antec SOHO cases without slack), and easy grip molex plugs -- bye bye fighting to insert them in and out of drives!

Specs...

True 600W power (it will peak beyond 600W for cold starts).

AC Input:
100-240 - 10A 50/60Hz

DC Output:
+3.3V - 30A
+5V - 30A
Total: 180W Max

Quote:
Example usage:
7x80mm fans @ 2.2watts = 15.4W
2xDVD @ 35watts = 70W
2xHDD @ 35 watts = 70W
Total: 155.4W
+12V1 - 18A
+12V2 - 18A
Total: 432W (or 36A)

-12V2 - 0.8A
Total: 9.6W

+5Vsb - 2A
Total: 10W
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