Which Power Supply in this new System

[Chimera6586]

Below is the system, please suggest one of the PSU's and give a reason. Thanks!

GPU: 9800GTX (http://www.newegg.com/Product/Product.aspx?Item=N82E16814130339&Tpk=evga+9800gtx)
CPU: Intel E8400~3.0GHZ (http://www.newegg.com/Product/Product.aspx?Item=N82E16819115037)
Motherboard: ASUS P5N-D, 750i (http://www.newegg.com/Product/Product.aspx?Item=N82E16813131232)
RAM: 2GB Kingston HyperX DDR2 800 (http://www.newegg.com/Product/Product.aspx?Item=N82E16820134012)
Hard Drive: 320GB SATA-II 3.0Gb/s 16MB Cache 7200RPM (http://www.newegg.com/Product/Product.aspx?Item=N82E16822152054)
Disk Drive: 20X DVD±R/±RW + CD-R/RW DRIVE
Case: RaidMax Smilodon

and which PSU:

Corsair CMPSU-750TX 750Watt (http://www.corsair.com/products/tx.aspx)
Thermaltake ToughPower 750Watt (http://www.newegg.com/Product/Product.aspx?Item=N82E16817153036)
Thermaltake ToughPower 700Watt (http://www.newegg.com/Product/Product.aspx?Item=N82E16817153035)

Price does not matter between these PSU's.
Note that the Corsair has one dedicated Rail, while Thermaltake has 4 rails. Which is better for my setup?

 

[EXT64]

Well, I have always heard good things about Corsair, so I voted for them. I don't know much about how good multi rails are. I'd be interested to see what others say about it.

 

[level101]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817703009

 

[level101]

whats the difference between the
Thermaltake ToughPower 750 Watt
& the
Thermaltake ToughPower 750 Watt

 

[Chimera6586]

Do you mean the 750 vs the 700?

I would say 50 Watts....

 

[oushi]

If price doesn't matter, I would go with the PC P&C Silencer level101 listed above. Out of the two brands you listed, the Corsair.

Multiple vs. Single 12V Rail

 

[SuicideSilence]

Another vote for the PC Power And Cooling 750

 

[jaguarskx]

750w is overkill.

A 600w - 650w PSU is more than enough.

I recommmend the following brands:

Seasonic
Corsair (the HX series is made by Seasonic)
PC Power & Cooling (Seasonic makes some of their PSUs like the Silencer 610 and lower)

 

[lunyone]

750w is overkill.

A 600w - 650w PSU is more than enough.

I recommmend the following brands:

Seasonic
Corsair (the HX series is made by Seasonic)
PC Power & Cooling (Seasonic makes some of their PSUs like the Silencer 610 and lower)

2nd that!! You could even go with the Corsair vx550w PSU that has 41A on the 12V rail, which would be plenty for your rig. I'd go with Seasonic/Corsair/PCP&C/Antec brands of PSU's. At least 450w or more for that setup. 500w+ if you want some room for OC'ing and other upgrades.

 

[chuckm]

A note on the Corsair VX PSU's, the 450 is Seasonic, the 550 is made by CWT.

 

[Chimera6586]

I know that the VX is made by Seasonic and that makes it good, but what about the TX? Are they crappy? Or are the TX series still quality PSU's as well?


Also, thanks for the input on the overkill amount of wattage. However I do want room for another 2GB of RAM down the road and an additional 9800GTX, plus some overclocking potential.


Also, please try to restrict suggestions to only the PSU's I have given as options (for various reasons that are kinda complicated).

Thanks again

 

[Chimera6586]

So most people seem to recommend the Corsair?

Would it be smart to go with this.

 

[chuckm]

Of the three you've chosen, yes.

 

[delluser1]

I know that the VX is made by Seasonic and that makes it good, but what about the TX? Are they crappy? Or are the TX series still quality PSU's as well?

TX 650 = Seasonic
TX 750 = CWT

 

[EXT64]

Who is CWT? Are they ok?

 

[jaguarskx]

CWT is an OEM who makes reliable PSUs for rebranding.

 

[chuckm]

Channel Well Technology

 

[Chimera6586]

If I decided to go with a 650 Watt power supply: This one= http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005

Would it be enough to power my rig PLUS an additional 1 gig of ram and another 9800gtx?

So: Would it power this:

2x 9800GTX in SLI
E8400
3GB of RAM
1 optical drive
320 Hard Drive 7200RPM
Asus P5N 750i


Let me know, Thanks

 

[oushi]

According to Tom's review on the 9800GTX, a single card will take up around 265 at load. Theoretically, having two in SLI would then use up around 530W out of the available 624W on the 650TX's 12V rail, leaving 94W for anything else.

I would expect the PSU to hold up okay while doing light jobs, but I wouldn't be surprised if it starts giving problems when it's getting stressed out. In my opinion, upgrading towards at least the Corsair 750TX, if not the PC P&C 750W Silencer, would be money well spent.

 

[Shadow703793]

Corsair FTW! One of the best PSU/RAM manufactures I know/use.

 

[itheral]

a single card will take up around 265 at load.

Actually that 265 refers the the whole system load at that point.. the GTX itself only pulls ~150. Any 600+ W PS is plenty of power.. even for an SLi system generally

 

[sdrac]

I went with the Toughpower 750W over the Corsair myself.

They're roughly equivalent - I found reviews of both on JonnyGuru's site and they were rated equivlently there. I posted on the forums there and the reviewers felt them to be about the same. I went with the Toughpower for two reasons: the review showed slightly less ripple on the 12V rail and - maybe more importantly to me - I got a great price on it.

Either one would be good enough/more then enough - go for whatever you can get the best price on.

 

[Gravemind123]

You could get away with less, as posted above, the VX550 is enough for your system and CWT makes their own industrial grade PSUs as well as contracted stuff for other companies, both good and bad companies, some CWT PSUs are pretty weak, others are great, the Corsairs are the latter.

 

[oushi]

Actually that 265 refers the the whole system load at that point..

You're right. My mistake!