Concerned about finding the right PSU

[mindwaste]

First of all, I would like to thank you all ahead of time for looking at this post. I know you have all probably answered this question a thousand times over.

I am not by any means a rookie pc builder. I started way back in the days of NVMax, and have recently dropped off from all of the guru forums. However, I am about to order a new computer when newegg finally gets 5850's in stock and was wondering if the power supply I want to order will push out enough power for it.

The specs will be as follows:
AMD Phenom II x4 955 Black Edition - 125w
4GB (2x2) Corsair XMS3 DDR3 1600 - ?
DFI LANParty DK 790FXB-M3H5 Motherboard - ?
2x Radeon HD 5850's in Crossfire - ~ 310w combined
2x WD Caviar Blue 500GB 7200rpm HDD (raid 0) - ?
Samsung DVD Burner - ?

Now, the PSU I am looking at is the Corsair CMPSU-750TX from newegg.
http://www.newegg.com/Product/...16817139006&Tpk=TX750W

I am very curious as to whether or not this will provide enough power for the computer. I am pretty sure I'll sneak by with at least 150w to spare, but would like to ask community experts their opinion. I would rather not spend more than 120 dollars on a power supply.

Thanks for your time!

 

[HOOfan 1]

Do you plan to overclock? If so, how insanely?

It really should be enough almost no matter what...maybe unless you do some insane phase change OCing.

For the price I would go for the Antec True Power New 750W. It is a little better...but if you like the Corsair for some reason...look etc. then yeah that is fine.

 

[mindwaste]

Thanks! I'll update it to the Antec (Good call, read reviews). Now I just have to wait for the stupid 5850's

 

[cmdrdredd]

I ran my Corsair TX750 with a Q9550 at 3.8Ghz, 4GB DDR2-800, a WD Velociraptor, 2x 7200RPM WD drives, 2 DVD burners, and a GTX-295 with 7 case fans. No issues for a loooong time. 24/7uptime for over 1 year under an average load.

 

[ChaiBabbaChai]

I was just looking through your specs and I have a question: Why would you want to get a DFI? It isn't 2005 anymore... I think the Corsair and Antec are both made by Seasonic, but I'm not 100% sure. Either would be enough, but efficiency may be an issue. Good luck.

 

[cmdrdredd]

I was just looking through your specs and I have a question: Why would you want to get a DFI? It isn't 2005 anymore... I think the Corsair and Antec are both made by Seasonic, but I'm not 100% sure. Either would be enough, but efficiency may be an issue. Good luck.

DFI still offers the most options for an overclocker in their BIOS. If someone was into tweaking out to the max.

Corsair PSUs can be Seasonic or Channel Well if my memory serves. Depends on the particular model. I know the XFX 850w Black Edition is a seasonic M12 unit under the hood and it is very good. The hx850 from Corsair is Channel Well if nothing has changed since Jonnyguru.com did their review of the unit. The Corsair is cheaper and performed better in the efficiency testing and about the same in the ripple test. However, it is a 80+ Silver rated unit so you would expect it to perform slightly better in the efficiency test. I believe the tx750 is also a Channel Well built unit. It performs pretty well, but in all honesty I'd pay a bit more and step up to their HX750 or HX850 units. I like modular cables anyway.

 

[HOOfan 1]

The XFX Black Editions is 80plus Silver as well.

The TX750 is a CWT PSH...the HX750 is a CWT DSG
The Antec TPN 750 is a Seasonic platform that AFAIK is only used in that line of PSUs...but very similar to the M12D

 

[cmdrdredd]

The XFX Black Editions is 80plus Silver as well.

The TX750 is a CWT PSH...the HX750 is a CWT DSG
The Antec TPN 750 is a Seasonic platform that AFAIK is only used in that line of PSUs...but very similar to the M12D

these OEMs building different PSU platforms is as confusing as it was back when DDR2 first started showing up with everyone trying to find one with Micron ICs on it. Nobody wants a lemon I guess. Either way, I'm a fan of modular cables these days. Less to hide.

 

[HOOfan 1]

these OEMs building different PSU platforms is as confusing as it was back when DDR2 first started showing up with everyone trying to find one with Micron ICs on it. Nobody wants a lemon I guess. Either way, I'm a fan of modular cables these days. Less to hide.

Different platforms for different power levels and different platforms with newer technology.

PSH is a fairly old design based on the old independently regulated type
DSG is a new platform based on DC-DC conversion of the 3.3V and 5V from the 12V source..makes it more efficient

 

[cmdrdredd]

Different platforms for different power levels and different platforms with newer technology.

PSH is a fairly old design based on the old independently regulated type
DSG is a new platform based on DC-DC conversion of the 3.3V and 5V from the 12V source..makes it more efficient

No I understand it but if you just look at the basic features without opening the PSu up to poke around inside and aren't diving into the likes of jonnyguru reviews then it's pretty hard to know what you are getting.