psu for a 9800 series

[amdfansftw]

my new system that im planning is pretty straight forward

6750 c2d
4 gigs ram
1 maybe 2 HDD
either a 9800 or 8800gts (not sure what i want yet)

im thinking the PCP&C 610W the reason is that if i decide to go to the 9800 later then i don't have to upgrade the PSU. Is this a good thought process?

 

[MarcVenice]

I think there's cheaper PSU's that would do the job. Much rather have thos modular and very quiet PSU: http://www.buy.com/prod/corsai...loc/101/203270716.html 80$ when using the google checkout. Will easily handle a 8800gts or a 9800gtx.

 

[amdfansftw]

im buying through newegg and before rebate on the corsair both are the same price. so question is which is the better PSU?

 

[MarcVenice]

Why are you buying through newegg ? The shipping at buy.com is free, there's no reason to buy at newegg.com if you can get it cheaper somewhere else ?

Anyways, which one is better. Qaulity wise I think it doesn't matter, in terms of ripple and such. The PCP&C is rated at 40c continous, whilst the corsair is rated at 50c continous, which is better. The corsair is modular, and has a 120mm fan and is KNOWN to be very quiet, the PCP&C has a 80mm fan and is NOT known for being quiet. You decide.

 

[HOOfan 1]

the 9800GTX uses less power than the 8800GTX and the same amount or less than the 8800GTS G92

 

[williama]

I have been looking into this myself.
I've found that the 9800GTX calls for 24A and the PSU i'm looking at the OCZ GameXStream 700W claims to have 4 12V lines giving 18A each with a total of 56A

Will this be enough?

I'll provide links:
Video Card
http://www.newegg.com/Product/...x?Item=N82E16814130339

PSU
http://www.newegg.com/Product/...x?Item=N82E16817341002


Is there something else i need to consider?

 

[MarcVenice]

It's complete overkill It calls for 24a TOTAL, on all the 12v rails, that OCZ has like 50a total on the 12v rails

Not really something else you NEED to consider. There's quieter units out there though, with modular cabling for the same price. Depending on your budget you could actually buy this for 60$: http://www.buy.com/prod/corsai...loc/101/205852646.html

 

[williama]

Is 550a enough for a modern system?

I don't necessary need to sli but the ability to grow into it has to be considered.

 

[MarcVenice]

550w is MORE then enough for a modern system. If you don't have a SLI motherboard, SLI-ing two videocards will be rather hard. Then there's the argument of SLI not being an upgrade path. That OCZ 700w PSU only has TWO pci-e 6pin connectors btw, which might not be enough to SLI some videocards. So you'd need to get a different PSU anyways if you ask me. My train of thought would be, if you spend 50-100$ extra on a SLI capable motherboard and spend 100$ extra on a BIGGER PSU, then that's 150-200$ you can't spend on a videocard. So unless you SLI two videocards right now, you're better of just buying 1, and upgrading it with a whole new videocard when you need more GPU power.

 

[luigionlsd]

I'd hate to revive a thread from the dead, but I'm in the same issue. My dad just got a 9800 GTX (I have no idea why), and I convinced him to swap for my 8800 GT since he doesn't play games. My rig is as follows:

Asus A8N-E
AMD Opteron 165
3gb DDR400 RAM
9800 GTX
1 SATA DVD-RW
1 SATA 500gb, 1 SATA 250gb
Antec SmartPower 2.0 500 watt (see details here: http://www.newegg.com/Product/...x?Item=N82E16817103937 )

Anyway, I installed the card yesterday, and managed to get it running. I'm using Vista Ultimate right now, but I'm just trying to see whether it's my PSU that's holding me back, or Vista itself. I've tried Crysis and C&C3 so far, both at 1680x1050 with "high" settings - 9800 GTX should be able to handle this, no? Looking at the specs, I do have a combined 24a on my 12v rails, so theoretically it should be okay. However, I did see this PSU on slickdeals that looks like it may do the trick: http://www.newegg.com/Product/...A&Item=N82E16817341010

Any input would be appreciated!

 

[EvilBob]

Sorry, luigionlsd, but you don't specify exactly what the problem is.

Looking at your system specs, the 500W psu you have is more than sufficient for the 9800 GTX.

Also looking at your specs, the problem I can guess at is that you have a very sluggish computer running something like Crysis at 1680x1050. And that has nothing to do with the PSU -- you have poor frame rates because your CPU and memory are a generation or more old - they may have been OK two years ago, but something like Crysis (esp. at 1680x1050!) will make then sit down and cry.

Your 9800 GTX is going to be very limited by the rest of the system - I wouldn't be surprised if you don't see much of a boost at all over the 8800 GT, which was likely already pushing the limits of your system.

 

[luigionlsd]

Originally posted by: EvilBob
Sorry, luigionlsd, but you don't specify exactly what the problem is.

Looking at your system specs, the 500W psu you have is more than sufficient for the 9800 GTX.

Also looking at your specs, the problem I can guess at is that you have a very sluggish computer running something like Crysis at 1680x1050. And that has nothing to do with the PSU -- you have poor frame rates because your CPU and memory are a generation or more old - they may have been OK two years ago, but something like Crysis (esp. at 1680x1050!) will make then sit down and cry.

Your 9800 GTX is going to be very limited by the rest of the system - I wouldn't be surprised if you don't see much of a boost at all over the 8800 GT, which was likely already pushing the limits of your system.

Thanks for the response! Only reason I asked is because I ran into similar issues where the GPU was running at partial speed due to lack of adequate PSU (using some generic 420 watt and an AGP 6800 Ultra). I've fixed the GPU bottleneck by upgrading to an E8400

 

[RallyMaster]

luigionlsd: get that SmartPower 2.0 swapped out ASAP. You're asking for trouble with that PSU. Mine very nearly took out my system a year ago when it started doing random restarts and had massive ripple through the +12V. I've pretty much gone Corsair or bust nowadays.

 

[luigionlsd]

How long did it take to crap out? I've been rolling this one since the end of 2005 and it seems to be going strong *knocks on wood

 

[myocardia]

Originally posted by: luigionlsd
How long did it take to crap out? I've been rolling this one since the end of 2005 and it seems to be going strong *knocks on wood

It wasn't powering a 9800GTX, though, was it? A 9800GTX requires considerably more power than an 8800GT, hence the reason it requires two PCIe power connections, instead of one, like an 8800GT.

 

[luigionlsd]

Something tells me the 9800 GTX isn't too far out of the park from the 6800 Ultra

 

[RallyMaster]

Originally posted by: luigionlsd
How long did it take to crap out? I've been rolling this one since the end of 2005 and it seems to be going strong *knocks on wood

8 months.