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500w for a 5850 HTPC

jacktesterson

jacktesterson

Diamond Member
Hey all,

I just bought a new house and just sold both my PCs... downgrading big time to a Laptop and a HTPC with decent video due to space and needing money.

Anyways, long story short... I have a Corsair CX 500w Builder Series PSU, brand new, laying around.

I was wondering if it'd be ok for the following HTPC I'm piecing together today...

Phenom II X4 965 3.4 GHz (will probably o/c to 3.8 or 4.0 down the road)
Gigabyte 880g Motherboard
1x SSD
1x WD Black
3 x WD Green
1 x Blu Ray
2 x Case Fans
Sapphire 5850 Xtreme 1GB (will be used on a 768p 50" Plasma with a 360 controller primarily for MLB2K11 and Controller games, so lots of power for that)


Am I ok? Or should I sell my 500w and look for a 600-650 watter?
 
*Way* more than enough, that unit will probably pull 350 from the wall.

I have an Antec Earth Watts 650W and run the following:

AMD Phenom II X6 1055T @ oc of 3.6GHz
MSI 890GX mainboard
Happauge PCI-E 1x dual tuner tv tuner
1 SSD
4 WD Black 500GB drives in RAID 0
2 DVD burners
card reader
4 120mm fans and a 200mm fan plus the 120 on the coolermaster cooler
Sapphire Radeon 5850 1GB slightly overclocked
PCI-E 4x LSI Megaraid 8308ELP RAID card with battery backup
 
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I thought my Corsair500w would be enough but wanted to be sure. Its not a great PSU, its decent.. but should be ok I think.
 
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I know online calculators suck but I'm 2nd guessing myself because they recommend 550w for my system (Xtreme) but say minimum is 475
 
You'll be fine with the Corsair PSU.

I'd be cautious if you plan on overclocking the 5850 though. It starts eating a lot of power if you increase voltage.
 
Bigystyle said:
I know online calculators suck but I'm 2nd guessing myself because they recommend 550w for my system (Xtreme) but say minimum is 475
Click to expand...

fffblackmage said:
You'll be fine with the Corsair PSU.

I'd be cautious if you plan on overclocking the 5850 though. It starts eating a lot of power if you increase voltage.
Click to expand...

At stock clocks, your system will pull 250-275w from the wall with a gaming load. Obviously, the Corsair 500w is plenty for that. You're talking about a pretty serious overclock on that Phenom, though, which might be pushing it for HTPC use, and would up the power draw considerably. Note that a coming update to Sapphire Trixx will allow overvolting of your HD5850. I still think you have enough reserve for some moderate overclocking of the HD5850, but I'd be cautious about heavily overclocking both the CPU and GPU, as you could add 150w of power draw if you're using serious voltage.
 
I will not be overclocking the video card.

I will run the CPU stock for a while.

Thanks for the help.

Sent from my Desire HD using Tapatalk
 
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