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Need Power Supply Help...


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#1 stevealmighty

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Posted 23 October 2006 - 09:42 AM

I'm doing a comp build (reccomendation) for work, and thus far I've got an intel core 2 duo Conroe 2.66 ghz cpu, 4gb ddr2 pc6400 ram(800mhz) (4x1gb sticks), intel mobo, XFX GeForce 6800XT PCIEx16 gfx card.......now I need a good quality power supply to run it all.

I'm thinking dual 12v rails each with 18amps (as we won't be using the graphics card to much if at all!), but where I'm stuck is that I don't know if a PSU has to have a special plug for a PCIx16 gfx card, like a SLI card requires a PSU to be "SLI ready". Something else I don't know is where the RAM gets it's power from, so I don't know what to look for in a PSU when I need it to run 4 gb of ram.

Any help here would be appreciated. I'll post back after I complete the build request asking to have someone check it over for any discrepencies.
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#2 usasma

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Posted 23 October 2006 - 10:43 AM

IMO the best PSU's are built by PC Power and Cooling - although many of the brand names are also good selections.

Recently there's been news about a "add-on" PSU for graphics cards. The intent is to free up the PSU for other tasks while the "add-on" handles the power requirements for the graphics.
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#3 stevealmighty

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Posted 23 October 2006 - 12:00 PM

Well, these machines won't be doing anything that's really graphic intensive. It's all pretty much 2D work, and no 3D or video rendering (99.9% of computer usage will be Adobe Photoshop).

My concern is the ram really. I know that ram can use up some power from psu's, and that low end, or under rated psu's won't power the ram correctly/sufficiently causing problems, so I'd like to know if this PSU HERE can run 4 1gb sticks of ram ok.

I've made another post HERE asking for others to check this build (I've listed specific parts). I'd appreciate it if you could check out that post and give me your insight on it.

Thanks usasma! :thumbsup:
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#4 dc3

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Posted 24 October 2006 - 09:57 AM

Thermaltake and Antec have always worked well for me. I don't think you will have any advantage using multiple 12V rails, they are suppose to separate the CPU from the peripheral devices, not the RAM.

As for the Silencer, that's a lot of money for a 470W PSU, your paying a lot for the lower db level, not the performance. I also get real ticked with people that advertise "peak power", this is a gambit left over from the audio industry where it actually had a small amount of relevance...not in power supplies!

Antec and Thermaltake both have 500W PSUs between $75.00 and $80.00, and both have rebates on those at Newegg. Check them out here.

Edit: I just took another look at the rebates, the Thermaltake PSU has a $20.00 rebate, I'm getting one for my
new build! :thumbsup:

Edited by dc3, 24 October 2006 - 10:01 AM.

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#5 stevealmighty

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Posted 24 October 2006 - 11:41 AM

Thanks for the insight dc3, but since this is for work, the government won't do rebate checks :thumbsup: Yet, they'll still complain about budget restraints and cutbacks :huh:

Also, thanks for explaining what the dual 12V rails were for. I had no clue why one would need dual 12 lines, but now I know!

Thanks again!
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#6 usasma

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Posted 27 October 2006 - 09:35 AM

4 gB of RAM? Are you aware of the limitation that XP has in addressing 4 gB of memory? This includes the swap file - so that subtracts from the ability to address the physical RAM. Here's some articles about it:

http://support.microsoft.com/default.aspx?...ben-us%3b555223
http://www.brianmadden.com/content/content.asp?ID=69
My browser caused a flood of traffic, sio my IP address was banned. Hope to fix it soon. Will get back to posting as soon as Im able.

- John  (my website: http://www.carrona.org/ )**If you need a more detailed explanation, please ask for it. I have the Knack. **  If I haven't replied in 48 hours, please send me a message. My eye problems have recently increased and I'm having difficult reading posts. (23 Nov 2017)FYI - I am completely blind in the right eye and ~30% blind in the left eye.<p>If the eye problems get worse suddenly, I may not be able to respond.If that's the case and help is needed, please PM a staff member for assistance.




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