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OCZ Fatal1ty 550w with Asus 570 DCII?

post #1 of 22
Thread Starter 
Hey I have a "can my PSU handle this GPU question" the PSU in question is this OCZ Fatal1ty 550w which is one year old, and the graphics card in question is this Asus Direct CU II GTX570, I want to point out also that this 570 requires one 8 pin and one 6 pin which is the max my PSU has if that make a difference. I believe that with my current system I could handle everything at stock clocks but I was also wondering what kind of overclocking headroom I would have for both my CPU and GPU. Once I get better CPU cooling in the future I plan on overclocking the CPU to around 4.5GHz and I would like to be able to overclock the CPU to a moderate amount, not it's maximum overclock but still fairly high. Please give me some idea of what kind of overclocking headroom I would have for my system as a whole, and thanks in advance for your help.

EDIT: Forgot to add a little more info about my system, I have five fans, no lights of any sort, and just the one hard drive currently but may add up to two 5400rpm 2TB green drive in the future and may add a sound card like this Asus DX. Thanks for any help I get.
Edited by juano - 3/23/11 at 7:59am
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post #2 of 22
You should be just fine as long as it's all sitting at stock. Though I wouldn't use Prime95 and Furmark at the same time.

On the other hand you really shouldn't have an issue loading up a game though. I also would advise something with a more appropriate wattage for a 550w unit if you chose to do something like Folding@Home.
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post #3 of 22
You can but you'll have no headroom for OC'ing.
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post #4 of 22
Well let's calculate that. The PSU has a total of 450W available on the +12v rail. A stock 2500k uses 95W, A GTX 570 has a TDP of 219W. That leaves 136w left. Let's say all the RAM and other hardware uses 36w. There's still 100W of headroom.
post #5 of 22
Should work fine.
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post #6 of 22
Quote:
Originally Posted by linkin93 View Post
Well let's calculate that. The PSU has a total of 450W available on the +12v rail. A stock 2500k uses 95W, A GTX 570 has a TDP of 219W. That leaves 136w left. Let's say all the RAM and other hardware uses 36w. There's still 100W of headroom.
It doesn't work that way, a i7 2600K will suck more juice than 95 watts. Same with a GTX 570.
That's also not factoring in the boards efficiencies or anything like that.

You must also consider that a fan can easily take 12w
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post #7 of 22
Thread Starter 
Quote:
Originally Posted by Tator Tot View Post
You should be just fine as long as it's all sitting at stock. Though I wouldn't use Prime95 and Furmark at the same time.

On the other hand you really shouldn't have an issue loading up a game though. I also would advise something with a more appropriate wattage for a 550w unit if you chose to do something like Folding@Home.
Keep in mind guys that while I do recognize that I don't have the greatest PSU and plan on making a better choice and spending more on it next time, but this PSU is already bought and I won't be upgrading it for atleast a year, so I have to stick with this PSU but the accommodation I could make is not overclocking either the CPU or GPU until I could afford to upgrade the PSU. It looks like the consensus so far is I should be fine at stock CPU and GPU clocks, and I could certainly afford to not overclock the GPU as it should be more than powerful enough for my needs but I would like (want, not need) to overclock the CPU to atleast 4.2GHz so what do people think about that possibility?

Also regarding Folding@Home I was hoping to be able to do that on the CPU and GPU once I get this GTX 570 in, so how safe do people think that would be at stock clocks of both or would I be asking for trouble even at stock clocks?
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post #8 of 22
Thread Starter 
Quote:
Originally Posted by Tator Tot View Post
It doesn't work that way, a i7 2600K will suck more juice than 95 watts. Same with a GTX 570.
That's also not factoring in the boards efficiencies or anything like that.

You must also consider that a fan can easily take 12w
I don't know how accurate this is but according to Hardware Monitor, even when running Prime 95 my i5-2500k doesn't use more than 65 watts. I have heard this is due to the integrated GPU being factored into the TDP and I'm not using it on P67 obviously but I defer to you more experienced PSU people.
Edited by juano - 3/23/11 at 5:32am
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post #9 of 22
Well it can't hurt to try, the powersupply can only shut itself down seeing as it is properly regulated, it won't pop like a Raidmax.
post #10 of 22
Quote:
Originally Posted by juano View Post
Also regarding Folding@Home I was hoping to be able to do that on the CPU and GPU once I get this GTX 570 in, so how safe do people think that would be at stock clocks of both or would I be asking for trouble even at stock clocks?
For now, you're fine. Just ask before you buy another unit so you can get the best value for your money.

As for this guy & F@H; I would suggest just sticking to the GPU portion of F@H for now. You can try GPU & CPU at the same time; though it may shut down on you.
Quote:
Originally Posted by juano View Post
I don't know how accurate this is but according to Hardware Monitor, even when running Prime 95 my i5-2500k doesn't use more than 65watts. I have heard this is due to the integrated GPU being factored into the TDP and I'm not using it on P67 obviously but I defer to you more experienced PSU people.
No software is accurate; even if it's telling you the right number. It's about as accurate as a rough guess from the user himself.
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CPUMotherboardGraphicsRAM
Core i5 3570K  Biostar TZ774XE Power Color AX5770 1GB 4x4GB 1866Mhz 9-10-9-27-2T 
Hard DriveHard DriveHard DriveHard Drive
Samsung Spinpoint F3 1TB Samsung Spinpoint F3 1TB Western Digital Green 2TB Samsung Spinpoint M4 500GB 
Hard DriveOptical DriveCoolingOS
Intel X-25M G2 80GB Lite-On BluRay Drive Arctic Cooling Freezer 13 Pro Windows 7 Ultimate 
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Dell U2212HM Deck Legend Frost Tactile Silverstone Strider Plus 750w Custom Acrylic Test Bed 
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Logitech G500 Cooler Master Storm Tactics FPS Beyer Dynamics DT-990 600ohm Samson MediaOne 3A 
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FiiO E09k QOGIR FiiO E17 ALPEN Microsoft Lifecam Studio Blue Yeti Pro Microphone 
CPUMotherboardGraphicsRAM
AMD A10-A5800K ASRock FM2A85X-ITX Radeon HD7770 1GB 2x8GB 1866mhz C9 
Hard DriveHard DriveOptical DriveCooling
SanDisk Ultra Plus 128GB 2TB 5400 RPM  24x DVD Drive Noctua L9A 
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