Which is best for my requirements?

http://www.xtremesystems.org/forum [...] p?t=108088

So which one is it?(the link didnt help me very much)

hmm it wont do its of budget (I live outside of the US)
Any other suggestions?And which one is best from what I have listed?

Intresting , because its the cheapest one.
So Seasonic>OCZ (in the specific model I mentioned)?

With your computer, not being able to spend $100 a good psu is sad. I would go for the PC P&C 610W, A Seasonic no less than 550W, a Corsair no less than 550W, or a Antec NeoPower no less than 550W. Then again, there is much more than goes into selecting a power supply than just looking at what components you have. How long you want to keep the computer, how much upgrading you are going to do, how long you will have your computer on everyday, etc.

What is important is the amps that the psu can reliably deliver on the 12v rails, not the watts. It is recommended that a pc with a single 8800gt/gts have a psu with 26a, and a 8800GTX 30a on the 12v rails. I expect the 9800gtx to be in between.
Lower quality psu vendors up the watts for marketing by either delivering them on the 3v and 5v rails which is easy, but not useful. They also claim peak watts and at 25c instead of a more realist temperature. Lower quality units will also operate at lower efficiency.

The 9800gtx requires two pci-e connectors. One indicator of a psu that can handle your 9800gtx is if it comes with two pci-e connectors.

Of the units you listed, I think the FSP unit is the best value, or even the seasonic based on their reputation as a quality primary manufacturer.

A psu is not the place to go cheap with a nice system such as yours. The PC P&C silencer610 would be appropriate. A lower, second choice would be corsair or seasonic m-12 or s-12..

It would be better to save $50 on the case instead of the psu.

Get a Q6600 instead of a Q9450, there now you have +$100 to add to the budget without harming performance. Unless you are going to be doing some serious encoding with this computer, theres not much reason to get a SSE4 processor over one that only does SSE3. You still need to tell us probably the two most important things: How long you plan on keeping the power supply? and how often it is on per day (24/7?)?

Antec earthwatts 500W is a good unit and has more amps on the 12volt rail (total 34) than PC Power and Cooling 470 which has 26amps

No, not even close. You can NOT just add the Amperage, it does not work that way. The Antec has an actual Amperage of 24A, the PC P&C has 32A. The PC P&C has an insane amount of Amps for a 470w or even a 500w, it is the only one I would trust to run that system.

The power supply is the most crucial part of a system, no matter how many cores, or how many GPUs you have they will suck if they are not being powered.

Well I don't think that is right. Let me do the math and see if I'm just doing it wrong.
Formula: Watts (W)/Voltage (12V) = Amps (A)
Antec Earthwatts 500w PSU:
If you read the sticker, it says 12v1, 12v2 MAX load is 408 watts.
http://www.newegg.com/Product/Show [...] wer+Supply
so inputting the values into the equation you get:
408w/12v=......34Amps!!! Now this sticker does fall under the "just add them up" syndrome. Your right that "MOST" PSU stickers don't label the same way.

PCP&C 470w PSU:
States right on the sticker that it only has 26A for the +12V rail.
See picture here:
http://www.newegg.com/Product/Show [...] wer+Supply

I'll throw in another PSU to show you differences.
Enermax Liberty PSU, shows clearly that it only can produce 36A on the combined 12V rails or 432w/12V=36Amps!

I don't disagree that PCP&C makes good PSU's, but I'd double check your calculations next time.

For the best value, I'd go with the Corsair vx550w PSU. It has 41A on the 12V rail and comes with a 5 yr warranty which none of the ones listed have that. It is also cheaper (after MIR) than the ones listed.
Corsair VX 550W ATX Power Supply - CMPSU-550VX
http://www.buy.com/prod/corsair-vx [...] 52646.html

PC P&C 470.

The Antec EarthWatts does NOT have multiple +12V rails. It only has one +12V rail with no limiters on any of the connectors.

from;
http://www.jonnyguru.com/modules.p [...] y2&reid=35

In this case, it does work that way.

Thanks everyone , and I guess that most agree on the
PC P&C Silencer 470W as the best from the ones I have listed.
Thanks alot!

leave it

OK thanks everyone, but ill go with blood_raven this time , but thank you too lunyone!

Just got back to this thread. Thanks lunyone for putting the b-raven right on the amps. I would never have posted what I did with out doing the research and looked up all the psu listed by OP and picked the one with the best rating/price ratio not because I like the brand name.
To OP your power requirements under heavy gaming are right up there what that PC Power and Cooling can deliver constantly on the +12V rail.

http://www.tomshardware.com/2008/0 [...] age12.html
According to Toms own review the power consumption of the 9800gtx under load is 265watts = 22 amps that leaves 4 amps for the rest of the system under constant use.

Yeah, but if you have the system for a few years and add a more power hungry GPU (9800gx2) you will be pushing things. I'm not saying that it will work, but with capacitor aging you could run into problems. It's nice to have a little extra now, so you don't have to upgrade in a year or two. Just wanted to point that out. The OP can go with whatever he feels comfortable with, but thought I should mention my concerns/opinion.