Is it possible that 450W isn't enough for a "normal" system?

[Bar81]

Originally posted by: Zebo
Wattage means nothing, It's all about the 12. A enermax 350 has more usable power than the silenx 450. 26A vs 22A. Problem is enermax aint quiet. It's sad almost everyone I've seen buys thier PSU's w/o looking at the 12V rail. There are several dozen articles out there on the net highlighting the all importantance of this spec with modern vid cards and processors who derive 100% of thier power from the 12. Oh well live and learn.


Your set up.~
Processor 90
vid card 70
drive 3 x 20 = 60
------
= 220W minimum off the 12V = 18.5A minimum but the 22A was measured at freezing temps, not case temps which lowers it's rating, big time. Plus you're using more power than that though other peripherals like mobo and CD idle, cards. No way a, bogus, freezing temp rated 22A PSU can handle your setup..especially overclcoking.

One way to tell if people suspect PSU is run 3dmark03 and if it crashes or restarts that's the problem. This really stresses a system out.

Anyway silenx makes a really good 600 watter as you found with a whopping 36A on the 12...dual opteron indeed. hehe




Edit: You all could do the same for $109 or $88...not saying it would be quiet though.

Thanks for the explanation. Didn't realize that the 12V line was the important one. I kinda figured my system has a monster power draw thanks to the vid card and the CPU esp since I'm going to clock it up a little. On the PSU, noise is my biggest concern so unfortunately I gotta pay through the nose.

 

[Bar81]

Originally posted by: JWMiddleton
You stated:

Is it possible that 450W isn't enough for a "normal" system?

Eh, what is "normal" about this system?? LOL - Congrats on a great box! Don't suppose you got SETI times on that bad boy?

lol, I meant to say normal in that there's no peltier or something crazy like that. Thanks, and no unfortunately I don't run SETI although if it's a simple test I wouldn't mind running it through just to see the numbers.

 

[Bar81]

Originally posted by: Zebo

Originally posted by: Bladen
What about an Antec Neo http://www.antec.com/specs/Neo480_spe.html

Would this be a good PSU for such a setup?

Dual 12 is cool. The first is the 24 and 4 pin power connector which feeds board, PCIs and chip(s). The second is all the molex and fan connectors. What this does is minimize power fluctuation to IC's from drives and fans noise. I like a big fat 12 though only cause I have so much invested in it with 2 enermax and one OCZ PSU without fail. Also some vid cards and presshot may exceed 18A..but probably not.

That antec might even be quiet because if it's large 120mm fan. Might want to search for some reviews as it's a new product.

I like how quiet the 120mm PSUs can be but the problem I've found is that heatsinks inside the PSUs are tiny and in order to properly cool the PSU you need to have very good airflow in your case so that it isn't hot air going into the PSU and attempting to cool it. I blew out a 120mm PSU because of just that type of thing.

 

[Zebo]

Originally posted by: Goi
18A on the +12V means over 200W of power. I don't think any CPU or video card is going to exceed that soon.

That's the problem you don't think about combining them.. A overclocked presshot uses 150W alone. A BFG6800 ultra uses another 90W. Add to the fact these 'ratings' are derived at 25C instead of 50C which gives much less than rated power.

Now on the dual 12 PSUs the vid card will use some power from the other 12 volt rail becasue it has molex connectors required to run so it probably ok...I'm still waiting for more overclcokers to give a review of the split 12 idea before I buy one.

 

[Goi]

150W huh? Where'd you get that figure from?

 

[Zebo]

You need to do your own research before questioning. First start with google, google is your friend learn come back and we'll discuss your knowledge. Right now you have none.

I'll throw you bone only because many may not know intels TDP's are highly inaccurate.

This is a list of maximum power consumption for Intel CPUs On average, these numbers are roughly 10~15% higher than Intel's TDP.

someone thinks 150W is impossible?)

Then we start overclcoking with 1.65V @ 3700 mhz using the Wattage calcualtor and it's easily surpassing 150W.

Overclcokers.com does'nt call then presshots for nutin' ya know.

 

[epsilon9090]

if you ont want to screw yourself, spend extra money to support your really expensive system and get an antec tru550 power suply. You will get very close to that number, and youll be able to run so much at one time it will run anything

 

[Bar81]

Please, anyone who decides to respond and doesn't read the thread, don't respond.

 

[Goi]

Originally posted by: Zebo
You need to do your own research before questioning. First start with google, google is your friend learn come back and we'll discuss your knowledge. Right now you have none.

I'll throw you bone only because many may not know intels TDP's are highly inaccurate.

This is a list of maximum power consumption for Intel CPUs On average, these numbers are roughly 10~15% higher than Intel's TDP.

someone thinks 150W is impossible?)

Then we start overclcoking with 1.65V @ 3700 mhz using the Wattage calcualtor and it's easily surpassing 150W.

Overclcokers.com does'nt call then presshots for nutin' ya know.

So when did this become a confrontation? You made a claim, I merely questioned your sources and validity, and you're saying I have no knowledge? Whatever dude. If you're not interested in sharing information I'm not sure why you're even on the forums.