Check my math please -

[Sumotku]

I'm helping myself to a QX6700 and the up and coming Abit AB9 Quad GT in the next couple of days and am questioning the need for a new PSU to suit. I'm using a Seasonic Energy Plus 550 HT. After reading through the excellent JohnnyGuru power supply thread I calculated 38 amps on the combined +12 rails, the 550 HT is rated at 41 combined amps on the +12. It seems without adding anything more to my system that this unit should suffice. Some specs to check my findings: QX6700 - No O.C. (yet, I'll upgrade the PSU before I do), a single MSI 7800 GTX (no O.C. there either), (1) 10,000 rpm raptor, (1) 7200 rpm HD, (5) cooling fans, (2) optical drives, (4) GB DDR2 PC 6400 RAM (spd settings). I think that's about all. So, can someone corroborate my 38 amps and/or advise on go/no go for this PSU?
The main considerations weighed in at 275 Watts for the CPU under load and about 70 Watts for the GPU, these are educated guesses only.

 

[Roguestar]

http://extreme.outervision.com/psucalculator.jsp :thumbsup:

 

[bendixG15]

Originally posted by: Roguestar
http://extreme.outervision.com/psucalculator.jsp :thumbsup:

Not for me .....:thumbsdown:

 

[smthmlk]

you'll be fine with the seasonic you've got. I'm not sure about that 38A figure either...

 

[Boyo]

I am pretty sure that you will be fine to run your rig with the PSU you have. Seasonic's are rated high for efficiency.

 

[GalvanizedYankee]

No problem.

 

[Sumotku]

Thanks for the help everyone.
The power supply calculator seems fine for ballparking it, it really should offer a 12V usage number to allow informed shopping though. I did some more net sweeping and haven't found anything to contradict my CPU at 23 amps/ GPU at 6 amps figures. If anyone has better data I'm all ears. BTW, the numbers I'm using are allowing for 100% usage, not compensated for real world 90-95%, to allow room for my ,cough, scientific methods.

 

[Operandi]

You'll have more then enough with that PSU (which is a great choice btw).

Check out the following articles..

Daily Tech: Power consumption tested with the 8800GTX and Intel Core 2 Extreme QX6700.

Power Distribution within Six PCs

Power Supply Fundamentals

 

[Sumotku]

Thanks so much Operandi, you certainly tied that one with a ribbon. : ) Much obliged.

 

[Operandi]

No problem.

Good luck with your build.

 

[JEDIYoda]

Originally posted by: Roguestar
http://extreme.outervision.com/psucalculator.jsp :thumbsup:

very very inaccurate!!
The saying that goes something is better than nothing does not apply!!