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HELP with power supply . thanks

Last response: in Components
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July 30, 2012 4:46:37 PM

Hi fellas.

quick help here.
i just picked up a galaxy MDT gtx 580
i still have my antec 600w power supply ... will it be ok still to use it? or do i need one?

Here is my pc specs:

Window 7 ultimate 64bit
Q6600 quad core cpu (stock speed)
Asus p5kc mobo
250G hard drive
4 gig ddr3 1033 ram (highest and fastest ram that a p5kc will support)
BFG 275 gtx (replacing it with 580 as mentioned above)

dont think this matter much but i'll incluse it.
ASUS Xonar DG 5.1 sound card
Razer black widow ultimate keyboard
Corsar M60 mouse

So will my 600 PS will handle my new card? BF3 is the only game i play and i can only play in lowest setting with 275 gtx with no lag . i wanna try it with maxed out setting with 580.

PS:I do not plan to SLI OR add anymore upgrade to this system

thanks in advance

More about : power supply

July 30, 2012 5:02:00 PM

forgot to mention one thing:
580 gtx is PCI E 2.0
and mobo p5kc only has pce 1.1

i saw on other forum that that should be ok, it will only reduce perf by like 2%?
cuz the 275gtx says it runs on pce 2.0 but its fine with my pce 1.1 on p5kc

so what u thoughts on that?
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Anonymous
a b ) Power supply
July 30, 2012 5:07:32 PM

the cards are the same pci 2.0 as you know and really there is no measurable difference between 1.1 and 2.0 (in frame rate). meaning @ 70 fps for pci 2.0 with a 2% less performance is 1.4 fps or 68 fps . . big deal.
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a b ) Power supply
July 30, 2012 5:07:53 PM

Quote
Our test system is based on a power hungry Core i7 965 / X58 system. This setup is overclocked to 3.75 GHz. Next to that we have energy saving functions disabled for this motherboard and processor (to ensure consistent benchmark results). On average we are using roughly 50 to 100 Watts more than a standard PC due to higher CPU clock settings, water-cooling, additional cold cathode lights etc.

System in IDLE = 167W
System Wattage with GPU in FULL Stress = 428W
End Quote

428 W / 600 Watts = 71% Load. (NOTE: Most likely you will be slightly less than the 428 Watts.

Bottom Line, A quality 600 Watt PSU is Fine.
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July 30, 2012 5:20:19 PM

thanks a lot guys
that was my initial thought but i just wanna to make sure.

i just cant seem to understand why people wants to install a 850w to 1200w PS. =/
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a c 89 ) Power supply
July 30, 2012 5:27:12 PM

MOAR POWER! ? That's my guess....
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a b ) Power supply
July 30, 2012 5:45:16 PM

Personnaly, in your case 650/750 watt PSU would be max. and above 750 is not only overkill but will cost more to operate at idle (Lowered Eff).
You do spend some time at idle power and with a PSU above 750 Watts you start to decrease PSU Eff. (Normally below 20 % PSUs drop off in terms of eff. same as if you go above 80% of listed wattage the eff starts to drop off.
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Anonymous
a b ) Power supply
July 30, 2012 5:53:51 PM

RetiredChief said:
Personnaly, in your case 650/750 watt PSU would be max. and above 750 is not only overkill but will cost more to operate at idle (Lowered Eff).
You do spend some time at idle power and with a PSU above 750 Watts you start to decrease PSU Eff. (Normally below 20 % PSUs drop off in terms of eff. same as if you go above 80% of listed wattage the eff starts to drop off.

+1 yesterday i made a comment that when a person buys a $120 80 bronze/silver/gold certified PSU twice the size they need it perform no better than a $40 coolermaster.
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