Go Back   Computer Forums > General Computing > Hardware
Click Here to Login
Join Computer forums Today


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-05-2008, 12:28 AM   #21
In Runtime
 
Join Date: Sep 2007
Posts: 257
Send a message via AIM to cwharms
Default Re: good psu

Quote:
Originally Posted by mammikoura View Post
it has enough watts yes.
but 23A is horrible for +12v.

even this $10 (after rebates) psu has more than 23a.
http://www.newegg.com/Product/Produc...82E16817159043


no. The ocz has 18a on a single +12v rail. 4 rails = 4 x 18A = 72A
Sorry, it doesn't work that way.

All of the PSU's I listed are more than powerful enough for what he is running.
__________________

__________________
E8400@3906*MSI Neo-2FR*4gb Corsair *2x500gb sammies*eVGA 9600GT SC*Corsair HX520
Q6600@3204*Gigabyte EP35C-DS3R*4gb A-DATA*2600XT*WD 320gb*500 EarthWatts(Folding for the [H]orde)
cwharms is offline   Reply With Quote
Old 05-05-2008, 12:36 AM   #22
Golden Master
 
mammikoura's Avatar
 
Join Date: Jul 2005
Posts: 7,459
Send a message via MSN to mammikoura
Default Re: good psu

Quote:
Originally Posted by cwharms View Post
Sorry, it doesn't work that way.
ohh it doesn't? Is that so? Well would you please then be kind enough to explain how it works?

Quote:
Originally Posted by cwharms View Post
All of the PSU's I listed are more than powerful enough for what he is running.
yeah I'm not saying that those won't work. AFAIK the 9600gt requires 24 amps for the +12v and it would probably run without any major problems even if the amps were a little short of 24. I'm just saying that I'd rather have a psu with decent amps instead of one that doesn't.
__________________

__________________
0_o
mammikoura is offline   Reply With Quote
Old 05-05-2008, 12:38 AM   #23
Omnipotent One
 
Atomic Rooster's Avatar
 
Join Date: Apr 2006
Location: USA
Posts: 11,161
Send a message via AIM to Atomic Rooster Send a message via Yahoo to Atomic Rooster
Default Re: good psu

Here's a good read from johnnyGURU.com: The "power supply FAQ" in particular, Single vs. Multiple +12V rails: The splitting of the +12V rail.
Atomic Rooster is offline   Reply With Quote
Old 05-05-2008, 12:40 AM   #24
In Runtime
 
Join Date: Sep 2007
Posts: 257
Send a message via AIM to cwharms
Default Re: good psu

Quote:
Originally Posted by Atomic Rooster View Post
How much amperage can the OCZ provide for the 9600GT? 18A

So your theory would pretty much make 90% of the PSU's unusable.

The amperage on the +12v rails can not be added up.
__________________
E8400@3906*MSI Neo-2FR*4gb Corsair *2x500gb sammies*eVGA 9600GT SC*Corsair HX520
Q6600@3204*Gigabyte EP35C-DS3R*4gb A-DATA*2600XT*WD 320gb*500 EarthWatts(Folding for the [H]orde)
cwharms is offline   Reply With Quote
Old 05-05-2008, 01:00 AM   #25
Golden Master
 
mammikoura's Avatar
 
Join Date: Jul 2005
Posts: 7,459
Send a message via MSN to mammikoura
Default Re: good psu

at the risk of repeating myself
Quote:
Originally Posted by
Well would you please then be kind enough to explain how it works?
__________________
0_o
mammikoura is offline   Reply With Quote
Old 05-05-2008, 01:05 AM   #26
In Runtime
 
Join Date: Sep 2007
Posts: 257
Send a message via AIM to cwharms
Default Re: good psu

If you have 4 12v rails w/ 25A on each rail, you still only have a total of 25A available, not 100A.

If you used your theory on the above mentioned example, you would have 1200w available on the 12v rail

I'm sure it's in Jonnyguru's FAQ, let me get to the other box and I'll look it up.

From the above mentioned FAQ:
Quote:
Ok… Now look at the 12V rails. There’s four 12V rails (I’ll explain why later) and they are rated at 22A and 22A, 36A and 36A. The maximum combined wattage of those two rails is 65A (780W / 12V = 65A).

What?!? But 22A + 22A + 36A + 36A is 116A? Like the +3.3V and +5V rails I just mentioned, +12V rails are not additive. You can load each one up to 22A or 36A, but you can’t load them all up to their max.
__________________
E8400@3906*MSI Neo-2FR*4gb Corsair *2x500gb sammies*eVGA 9600GT SC*Corsair HX520
Q6600@3204*Gigabyte EP35C-DS3R*4gb A-DATA*2600XT*WD 320gb*500 EarthWatts(Folding for the [H]orde)
cwharms is offline   Reply With Quote
Old 05-05-2008, 01:20 AM   #27
Golden Master
 
mammikoura's Avatar
 
Join Date: Jul 2005
Posts: 7,459
Send a message via MSN to mammikoura
Default Re: good psu

ahh.. I get it now. Let me take a look into my case and see what it says about the max for all of the +12v's.
edit: 580w total. So that would mean 580 / 12 = 48.33 amps for the +12v?
__________________
0_o
mammikoura is offline   Reply With Quote
Old 05-05-2008, 01:26 AM   #28
In Runtime
 
Join Date: Sep 2007
Posts: 257
Send a message via AIM to cwharms
Default Re: good psu

No, that PSU provides 216w on the +12v. 18*12. Read the entire FAQ from Jonnyguru, there's a lot of good info there.

BTW - In no means am I saying anything negative about that particular PSU, I just put one in my sisters box.
__________________
E8400@3906*MSI Neo-2FR*4gb Corsair *2x500gb sammies*eVGA 9600GT SC*Corsair HX520
Q6600@3204*Gigabyte EP35C-DS3R*4gb A-DATA*2600XT*WD 320gb*500 EarthWatts(Folding for the [H]orde)
cwharms is offline   Reply With Quote
Old 05-05-2008, 01:38 AM   #29
Golden Master
 
mammikoura's Avatar
 
Join Date: Jul 2005
Posts: 7,459
Send a message via MSN to mammikoura
Default Re: good psu

Quote:
Originally Posted by cwharms View Post
No, that PSU provides 216w on the +12v. 18*12.
yeah but isn't that for one rail only? 18A (which is the max for 1 rail) x 12v.
The sticker says that the max combined power for the +12v is 580W. So 580W / 12V = 48.33A. Just like in the example:
Quote:
The maximum combined wattage of those two rails is 65A (780W / 12V = 65A).
no?
__________________
0_o
mammikoura is offline   Reply With Quote
Old 05-05-2008, 01:49 AM   #30
Daemon Poster
 
ericf1993's Avatar
 
Join Date: Nov 2005
Posts: 671
Default Re: good psu

wait so the earthwatts430 wil be more than enough to power on and use the upgraded system( the amd opteron one) right because im lost after reading what you guys are saying about the rails...
__________________

ericf1993 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 09:19 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.0