PSU to go with my Q6600 :S

[syrian_gamer]

Hey guys hows it going? Im going to be getting a new quad core Q6600 this week and i will need a psu to go with it. ive been looking around at alot of places but im worrying about noise alot. i want sometihng that will be quite (i just dont want it to be too loud). I will eventualy be running

Q6600
2GB PC6400 ram
8800GT
1-2 sata HDD
1 DVD drive
couple of fans and cathodes also

i was thinking about a good 600watt? what do you guys recoment? i also live in canada so any place that ships there woudl be great

[deadpixel]

ncix (sp) should have it.

I have the Pc Power and cooling 610. Its got 49Amps on one 12 volt rail. One 80mm cooling fan.

This thing is awesome its called "silencer" and I believe it! The only noise I hear is that of my HSF.

Its an awesome power supply!

[ryanmartini]

Corsair VX550.

[burebista]

Corsair VX450 or HX520 if you want modular.

[gigabit]

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[Jongi]

Intel Core 2 Quad Q6600
2x Kingston DDR2-800 1GB
XFX PV-T88P-YDF GeForce 8800GT
XFX MB-N680-ISH9 nForce 680i SLI MCP Motherboard

I would then need a case and PSU that would handle the above plus one DVD-Writer, 4 HDDs, Winfast TV2000XP TV Card and a SB 24-bit Live!

[AlabamaCajun]

OCZ StealthStream 500
http://www.newegg.com/Product/Product.aspx?Item=N82E16817341012
Just ordered one of these for a Q6600 rig with no SLI. The specs look good and I'm betting on OCZs good name at $75 bucks! I'm sure the Corsair mentioned a few posts back will beat my OCZ with it's own power cord but it's still an option.

[jchunter]

I have been looking into building this same config (Q6600 plus a 512 MB 8800GT) for a friend and I think 650W PSU is going to be marginal if you do any serious overclocking.

If you assume about 100 watts @ 2.4GHz for the Q6600, it will burn about 2.4 times as much power at 3.6GHz, or 240W. The 880GT needs 400W by itself (listed in NewEgg's spec), so with 650 W PSU, you are right on the limit. If you overclock the 8800GT, you could be in trouble. :eek:

I would go 20% over, just to provide some headroom, so I would be looking at 800W, minimum.

BTW, if you found a review that measures 8800GT power, please post the link.

[Ben333]

Antec Earth Watts. It has two 17 amp 12V rails, two PCI-E, 8 pin mobo. I will be running a system like yours and I already have the PSU. I can barely hear it and when the TV or another fan is on I can not hear it.

[sunrunner20]

The 880GT needs 400W by itself (listed in NewEgg's spec)
That means it requires a 400W PSU, not consume 400W. A quality power 500+ PSU will be more than sufficient. I've got my rig hooked up to a "Kill a Watt" unit and I peak out at ~210W. Also note, thats Watts- Not amps which means it moves over to the same Watts that the PSU outputs.
Actually, the power on the output side is about 20%-30% less because of inefficiency.

[RollingThunder]

Corsair VX450 or HX520 if you want modular.

These two get my vote too. They don't get any quieter that the Corsairs.

[jchunter]

That means it requires a 400W PSU, not consume 400W. A quality power 500+ PSU will be more than sufficient. I've got my rig hooked up to a "Kill a Watt" unit and I peak out at ~210W. Also note, thats Watts- Not amps which means it moves over to the same Watts that the PSU outputs.
Actually, the power on the output side is about 20%-30% less because of inefficiency.Here is a link to an actual measurement of the 8800GT power consumed - http://arstechnica.com/journals/hardware.ars/2007/11/28/revisiting-the-power-consumption-of-the-ati-radeon-hd-3800-series

Looks as if 240W is consumed at peak graphics load, all by itself. When you add another 240W for an overclocked Q6600, you would overload a 500W PSU and we haven't yet considered other requirements.

OTOH, if the OP decides that he will never overclock, there is no problem with 500W. Trouble is, the Q6600 is one of the most overclockable chips around, and overclocking is catching. :beer:

[ancalime]

When you add another 240W for an overclocked Q6600, you would overload a 500W PSU and we haven't yet considered other requirements.

240 watts? Really? A Q6600 rig that I just built for a friend at 3.4Ghz comes in at far less with 4 instances of Prime95 running (forgot exact amount, but definitely not in 200s).

To be honest unless you are doing some off the chains OCing, I am willing to bet the 450VX would be fine. But why limit yourself with the low end model when the TX550 and 520HX costs only a bit more?

[jchunter]

CPU power can be approximated as P = fCv**2.

The relative power between a stock chip and an overclocked chip is

P(OC)/ P(stock) = f(OC) C v(OC)**2 / f(stock) C v(stock)**2
= f(OC)V(OC)**2/f(stock)V(stock)**2,
where f(stock) = 2.4GHz and
V(stock) = 1.12v.

In my Q6600, f(OC) = 3.6GHz and V(OC) = 1.4v (full load).

So, the power ratio is 3.6*1.4**2 / 2.4*1.12**2 = 2.625 times the stock power, which I assumed (above) as 100W. Spec power is closer to 90W, so multiplying by 2.625 = 236W.

Close enough for government work...

Your mileage may vary..

An overclocked Quad consumes an awsome amount of power. :eek:
My system makes a great space heater... :bday:

[brickout]

Corsair VX series is a great balance between performance, budget and very quiet.

[sunrunner20]

CPU power can be approximated as P = fCv**2.

The relative power between a stock chip and an overclocked chip is

P(OC)/ P(stock) = f(OC) C v(OC)**2 / f(stock) C v(stock)**2
= f(OC)V(OC)**2/f(stock)V(stock)**2,
where f(stock) = 2.4GHz and
V(stock) = 1.12v.

In my Q6600, f(OC) = 3.6GHz and V(OC) = 1.4v (full load).

So, the power ratio is 3.6*1.4**2 / 2.4*1.12**2 = 2.625 times the stock power, which I assumed (above) as 100W. Spec power is closer to 90W, so multiplying by 2.625 = 236W.

Close enough for government work...

Your mileage may vary..

An overclocked Quad consumes an awsome amount of power. :eek:
My system makes a great space heater... :bday:


OK, Here is my offical statment:
system is overclocked to 3gig. 8800GTS is at stock
P95(new w/ 4 threads) in small FFT+ 3Dmark06= ~295W. The end.

measurements trump theory. :beer:

PS: quality PSU's will have no problems until their spec is exceeded on a regular basis. AKA: 400W PSU giving off 400W of power to components== Happy PSU

[Elluzion]

corsair 520hx FTW!

[simba1621]

HX520 + 1 vote

or the ultra x-connect 600w. 35 amps on the 12v rail. i love mine.

[brakezone]

I think part of the confusion with that article is that they are testing the entire system at full load as opposed to only measuring the amount of power that the graphics card uses.

Your assessment of CPU power draw is very reasonable; however, the 8800GT uses less than what we might expect. The power connections via the PCI express bus and the 75 watt pci express plug would only barely satisfy the power requirements for a card that needed 245 watts all by itself. Perhaps the hd2900XT approaches this but not the 8800GT.

You also have to think that a CPU is almost like a brute force mechanism, where a graphics card is elegant and specific. X86 and X86_64 arch Cpu's really have to run at high frequencies in order to do anything, and then with multiple cores of these, I think CPU's really hog alot more power than the lower clocked GPU's.

If you want to OC , like you say, you have to buy more wattage than you need because you require stable current.

[bardos]

i started a thread up top, but as you are all into it at the moment:

TX550 OR 520HX ? difference is? (besides modular)

[RollingThunder]

i started a thread up top, but as you are all into it at the moment:

TX550 OR 520HX ? difference is? (besides modular)

Bardos,

The specifications are nearly the same, not much difference except for modular. Either one fits your needs with much to spare so it's not much more than a personal choice now.

[surfasb]

Bardos,

The specifications are nearly the same, not much difference except for modular. Either one fits your needs with much to spare so it's not much more than a personal choice now.

+1. This will come down to a personal preference.

[jchunter]

wrong thread - deleted

[AlabamaCajun]

3.2G on a Q6600 but only a 7600GS on board but solid as a rock with the Stealth. It's not even getting warm.