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Wolverine21
06-09-07, 11:40 PM
I have this power supply currently powering my system which consists of:

*ASUS A8N-SLI Premium Socket 939 Motherboard
*AMD Athlon 64 FX-60 CPU overclocked to 2.81GHz (undervolted from 1.35 to 1.325V)
*2 CD/DVD drives
*4 SATA hard disk drives (2 Western DIgital Raptors and 2 7200RPM Western Digital)
*2 1GB DDR SDRAM DIMMs of OCZ PC4000 memory overclocked to 533MHz
*2 GeForce 7800GT video cards in SLI.
*4 low speed quiet 120mm fans.

Heck is this PSU even comfortably enough for the system as I currently have it? I think it is, but I just want to be sure I haven't been arunning a system fir the past year with the power supply on the edge as for having enough power?

And I plan to replace my 2 GeForce 7800GT video cards with a single GeForce 8800GTX? Will this power supply be comfortably enough for my system with a single GeForce 8800GTX video card?

Banko
06-10-07, 12:01 AM
Well I run a 500W, and it's perfect.

It all depends on the amperage, how much amperage do you have on your 12v rail ?

BCKator
06-10-07, 12:09 AM
Works for me

Vasot02
06-10-07, 03:09 AM
Τhe minimum PSU requirements for a GTX\ULTRA card are 500W

It will run fine with your Seasonic 600W

Lemur.fi
06-10-07, 04:41 AM
Well, Seasonic makes the best PSUs out there. You can add a second GTX and still be fine.

Joe Public
06-10-07, 04:46 AM
Yeah, a 600W Seasonic is more than enough. Those are high quality PSUs, as mentioned.

Medion
06-10-07, 10:04 AM
*2 GeForce 7800GT video cards in SLI.
I've run 7900GTO SLI on my SeaSonic 430W. You'll be fine.

Q
06-10-07, 10:12 AM
You can run SLI 8800 GTXs and at least four hard drives, one DVD/RW, and 5 120MM fans in a 4800 X2 system with the S12 600 watt. It's one hell of a PSU and as quiet of one as you'll ever find.

Wolverine21
06-10-07, 07:58 PM
I'm pretty sure my PSU has 2 12V rails with 18A on each one. Is it true that both of those rails are separate and cannot be used together? I think I read a thread here that said that having dual 12V rails is a bad thing because one is for the CPU and the other is meant to power the rest of your system, thus leaving you short if you are going to power a really high end video card. And it is better to have a PSU with a super strong single 12V rail, or just tri 12V rails for this reason alone?

Lemur.fi
06-11-07, 04:12 AM
Independent rails have their own voltage regulation so a big power draw from one of the rails should not effect the voltage levels of the other rails. When connecting devices to the PSU, you might need to think a bit more with several rails but I do not really see that as a drawback.

GTX draws little over 40W from the PCI-e and from both of its external power connections with a total of ~130W, at peak.//1 (http://http://www.xbitlabs.com/misc/picture/?src=/images/video/gf8800gtx-roundup/8800gtx_full.gif&1=1) Because of the several connections, you can easily divide the load to several rails. (nVidia says 180W max but that is not really possible with normal use like gaming or with normal temperatures.)

With a single card, you can just slap MOBO to one rail, the GPU to the other rail and the rest to where ever.

Wolverine21
06-11-07, 06:27 AM
Independent rails have their own voltage regulation so a big power draw from one of the rails should not effect the voltage levels of the other rails. When connecting devices to the PSU, you might need to think a bit more with several rails but I do not really see that as a drawback.

GTX draws little over 40W from the PCI-e and from both of its external power connections with a total of ~130W, at peak.//1 (http://http://www.xbitlabs.com/misc/picture/?src=/images/video/gf8800gtx-roundup/8800gtx_full.gif&1=1) Because of the several connections, you can easily divide the load to several rails. (nVidia says 180W max but that is not really possible with normal use like gaming or with normal temperatures.)

With a single card, you can just slap MOBO to one rail, the GPU to the other rail and the rest to where ever.


Isn't one of the rails already for the CPU and mobo only. And everything else is powered off the other 12V rail and there is no choice other than that? In that case though, 18A should be enough for the video card and all the fans and HDD drives while the CPU and motherboard are powered off the other 18A 12V rail?

Joe Public
06-11-07, 08:11 PM
Well, I don't know about the specific Seasonics, but according to reviews, the Corsairs (which are rebadged Seasonics) act as they have a single 12V rail, even though it says on paper that it's split.

|MaguS|
06-11-07, 08:14 PM
PSU should run SLi 8800GTXs, I know mine did when I first got my cards.

stncttr908
06-11-07, 10:42 PM
My designed by Seasonic Corsair 620W works great with my rig in sig.

Lemur.fi
06-12-07, 04:16 AM
Isn't one of the rails already for the CPU and mobo only. And everything else is powered off the other 12V rail and there is no choice other than that? In that case though, 18A should be enough for the video card and all the fans and HDD drives while the CPU and motherboard are powered off the other 18A 12V rail?

To be honest, I do not know the cabling of the specific model. My current Antec PSU atleast has more cables to rail 1 than just the MOBO cable.

I just ordered Seasonic S12 550W Energy+ myself. I would gone with the older S12 430W model but the SPCR reviews say that the 550W model is quieter at higher loads.

Joe Public
06-12-07, 08:54 AM
Yeah, with a high quality PSU, one does not really need anything more than 600W today, for a typical gaming rig. I see people who run off and get 800W - 1kW PSUs to power mid range rigs because they think they need it.

When in reality the high power recommendations stem from the fact that many people have crap $50 low quality PSUs that can't deliver half of what the specs say.

mynakedrat
06-12-07, 08:24 PM
i think it is not enough. thats whack you runn all that, i am surprised somehting hasnt shutdown, underclocked and burnt yet.
6 ide devices,
2 vid cards,
and a high end powerhog cpu??

get another psu, dont fry any of your components by listening to anyone else who says this is enough. i can see where downlaoding a game and / or burning a cd, or playing a game at the same time with a cd in can really stress that setup. i fried 2 hard drives and one motherboard with a "high end" psu that was supposed to "work miracles"


until you turn everything on , that is.
just nice hardware that can go up in a puff of smoke, hate to see that...again..

thegrommit
06-12-07, 10:16 PM
i think it is not enough.

Think? link (http://techreport.com/reviews/2007q1/geforce-8800s/index.x?pg=11).

That's 282W under load for a GTX, E6700 and single hard-drive system. Even with the overclocked FX60 and three drives, a PSU like his (432W combined on the 12V rails) is not going to be stretched.

einstein_314
06-12-07, 11:54 PM
i think it is not enough. thats whack you runn all that, i am surprised somehting hasnt shutdown, underclocked and burnt yet.
6 ide devices,
2 vid cards,
and a high end powerhog cpu??

get another psu, dont fry any of your components by listening to anyone else who says this is enough. i can see where downlaoding a game and / or burning a cd, or playing a game at the same time with a cd in can really stress that setup. i fried 2 hard drives and one motherboard with a "high end" psu that was supposed to "work miracles"


until you turn everything on , that is.
just nice hardware that can go up in a puff of smoke, hate to see that...again..
Umm...he'll be fine with a 600W powersupply. I ran SLI'd 7800GTX's, an Opty 175 (overclocked to 2.6Ghz), 4 hard drives, and 2 optical drives off of a OCZ powersmart 520W powersupply for over a year....not a single problem.

600W will be more than enough for a single 8800GTX.

john19055
06-13-07, 02:00 AM
You will be fine with the seasonic 600watt running a 8800GTX ,I ran my system I have in the signature on a 560watt Silverstone Zues and it ran fine,with the 38amp on the 12v rail.