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Can my current PSU Handle my upgraded hardware?

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October 1, 2010 8:12:25 PM

Hi, I am in need of some expert advice regarding the ability of my current PSU to handle some upgrades im about to do. I have a gtx 260 that i was able to get new for dirt cheap as a replacement for my 9800gt. Now what i plan to do for now is use the gtx260 as my main card and run the 9800gt for physx only. In the future i plan to maybe add another gtx260 to run SLI if i can get a great deal on one for cheap. Currently my cpu is OCed so im further worried about making sure my power demands will be met when i add an extra gpu. Now what i need to know is can my current PSU which is an Ultra LS600 handle a gtx260 + 9800gt running physx and/or can it handle 2x gtx260 running SLI? If it can great if not any suggestions of good PSU for under $100?

P.S. Please don't suggest other graphics cards since i already have the gtx260 i just don't feel like tossing it in to "see what happens" lol

Link to my PSU: http://www.tigerdirect.ca/applications/SearchTools/item...

System:
OS: Windows 7 Ultimate 64
CPU: Intel E7400 OCed @ 3.8Ghz
MB: XFX 750i SLI Extreme Edition
Ram: 8gb OCZ DDR2
HD: 500gb Seagate
PSU: Ultra LS600
GPU: XFX 9800gt 512 (gtx260 not used until i get an answer here lol)
a b ) Power supply
October 1, 2010 10:00:52 PM

With 624W on the +12V rails it should be able to handle a GTX260 and 9800GT with your other components too.
http://www.tigerdirect.ca/applications/SearchTools/item...

As for a second GTX260 for SLI in addition to that, you're cutting is close but there is enough power. Besides, these corsair models are known for their reliability even past their specced wattage.

Oh, I used the TDP of the parts to calculate power. Though not power, TDP is actually the heat dissipation, which is good enough for an estimate.
For example, my radeon 4850 and athlon IIx4 overclocked have a TDP of 209W total. System draw at full CPU and GPU load is 230W. Take into account PSU efficiency (85%) and we get a system draw of 195.5W, less than the total TDP of both and this includes my ram and hard drive load.

182W each for GTX260
125W for the 9800GT
65W for the E7400 but let's bump that up to 100W for the overclock

Total: 589W

You're golden with that PSU.

Edit: if you want to save money, this one is still pretty good. 552W on the +12V rails. Not sure if I would try to add the second GTX260 with it though.
http://www.tigerdirect.ca/applications/SearchTools/item...
October 1, 2010 10:30:58 PM

ok so basically you are saying my current power supply CANNOT power even a gtx260 with a 9800gt running physx? If so do you think it would even run a single gtx260 with the current amps my psu is rated?

Thanks
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a b ) Power supply
October 1, 2010 10:43:36 PM

thamecca said:
ok so basically you are saying my current power supply CANNOT power even a gtx260 with a 9800gt running physx? If so do you think it would even run a single gtx260 with the current amps my psu is rated?

Thanks



Your PSU is crappy, I would never allow one of those to be used for more than $400 worth of parts.


a b ) Power supply
October 1, 2010 11:15:06 PM

thamecca said:
Wow its really that bad? OK well at least i know now and can begin to seriously look at obtaining a new PSU.

Enzo suggested this PSU http://www.tigerdirect.ca/applications/SearchTools/item... which looks good but im no expert. I also found http://www.newegg.com/Product/Product.aspx?Item=17-371-... and i hear Antec is known for PSUs.

Any other suggestions based on my needs?



Do you live in the US?

If so get that PSU from newegg..

They have a much better RMA process should anything go wrong.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Also newegg is faster at shipping then TD.


Also this is what happens when you use a crappy PSU...

http://www.youtube.com/watch?v=LTVEtr14FEA
a b ) Power supply
October 1, 2010 11:22:24 PM

Ultras aren't THAT bad. Midway point between Seasonic/Corsair and generics, not the cleanest power but should at leas be generally in-spec and wont explode.

Your current PSU is perfectly adequate for a single GTX260+9800GT, but for 2, the 650W Corsair is the one you'd want. However, I don't suggest the upgrade now, do that when you get the other 260.
October 1, 2010 11:41:12 PM

Hmmm you add an interesting twist so maybe it is capable of running the setup but will it do so safely?

Also i have failed to mention something that happened this morning. I ran 3dmark to test my system since i have not done so since i OCed my e7400 from 2.8-3.8Ghz. At the stock 2.8Ghz i got a score of around 21000 however my test this morning i scored a 9100 like what is going on how is this possible. I watched as my cpu struggled immensely on the last part of the test handling physics dropping below 5fps. Could this also be a sign my PSU is not up to the task of handling my overclock and thus my system in general?
a c 144 ) Power supply
October 2, 2010 4:29:02 AM

Probably not. Under these circumstances, most likely you would have seen a reset/reboot cycle, not a graphics slowdown.
a b ) Power supply
October 2, 2010 4:15:18 PM

thamecca said:
Hmmm you add an interesting twist so maybe it is capable of running the setup but will it do so safely?

Also i have failed to mention something that happened this morning. I ran 3dmark to test my system since i have not done so since i OCed my e7400 from 2.8-3.8Ghz. At the stock 2.8Ghz i got a score of around 21000 however my test this morning i scored a 9100 like what is going on how is this possible. I watched as my cpu struggled immensely on the last part of the test handling physics dropping below 5fps. Could this also be a sign my PSU is not up to the task of handling my overclock and thus my system in general?

-temperatures too high
-unstable overclocks
-dying components
!