View Full Version : How low can your 12V go? :poet:
Special_K
09-29-2005, 09:36 AM
K R having some weird random freezes while playing BF2, and initially thought it was VCore stability, but from looking at Speedfan logs, it seems that the 12V rail is fluctuating wildly on this PSU =/
high = 11.86V
average = 11.7V
low = 11.13V !!!!
weird thing is, sometimes the system will run for days (6days 13hrs is record uptime) when playing BF2, and other times it will only run a few minutes of BF2 without changing a single param
whilst on the subject, the 3.3V seems a little low in the 3.07V-3.02V range
can anyone confirm that these voltages are bad and could be a cause for concern, or is this nothing out of the ordinary?
does anybody know if it is possible to tweak some pots in this PSU?
thanks in advance
K
Dave in Daytona
09-29-2005, 09:46 AM
BIOS/software is useless! MUST USE A DVM/DMM!
Like this: http://forums.extremeoverclocking.com/showthread.php?t=137886
The +12V spec is +/-5%, so +11.4V to +12.6V,
however anything outside of +11.70V to +12.30V is not acceptable to me.
Special_K
09-29-2005, 09:55 AM
very good point about the DVM, dunno why it slipped teh mind?
K will test that and return with some more data
thx for the reply
K
Anything below ~12.6v is not acceptable to me. Now that's semi extreme? :cool:
Yea man use a DMM. Speedfan reports my 12v as 11.9v... sometimes 12.1v And i know my PSU doesnt have that much droop.
Special_K
09-30-2005, 09:46 AM
ohnoesssssss
DVM reports 11.5V average, which is 0.2V lower than what SpeedFan was showing
that would then suggest the low is 10.9V!!!!! :eek:
time for a new PSU K thunks
Dave in Daytona
09-30-2005, 12:23 PM
ohnoesssssss
DVM reports 11.5V average, which is 0.2V lower than what SpeedFan was showing
that would then suggest the low is 10.9V!!!!! :eek:
time for a new PSU K thunksYep! :stick:
PSU Guide: http://forums.extremeoverclocking.com/showthread.php?t=136602
Korpse
09-30-2005, 12:25 PM
Dave, you got those links authorized by a mod?
i assume its davehammock from EOCF???
Dave in Daytona
09-30-2005, 12:35 PM
Dave, you got those links authorized by a mod?
i assume its davehammock from EOCF???davidhammock200 here.
How are you doing my friend?
As far as authorizations go, I letting them copy/link my PSU Guides, so I guess, it's ok.
http://www.xtremesystems.org/forums/showthread.php?t=73453
http://www.xtremesystems.org/forums/showthread.php?t=56231
Dave ;)
Mr. Tinker
09-30-2005, 12:42 PM
Good to know davidhammock2000 is here. I feel safer somehow.
Korpse
09-30-2005, 01:58 PM
Lets just see the post count rise :)
Special_K
10-15-2005, 11:03 AM
follow up post
so K decided to swap the 2x1GB sticks of RAM for the 2x512MB sticks and now the 12V rail has risen to average 12.2V and 12.1V low????
can RAM really suck up that much juice?
Dave in Daytona
10-15-2005, 11:31 AM
follow up post
so K decided to swap the 2x1GB sticks of RAM for the 2x512MB sticks and now the 12V rail has risen to average 12.2V and 12.1V low????
can RAM really suck up that much juice?NO! The RAM doesn't use ANY +12V! :fact:
Special_K
10-15-2005, 02:22 PM
that's why K R confuseled =/
how can just switching out the RAM drastically affect the 12V readings?
Dave in Daytona
10-15-2005, 04:40 PM
that's why K R confuseled =/
how can just switching out the RAM drastically affect the 12V readings?It can't! In switching out the RAM, wires were moved... something, just be happy & enjoy! :toast:
Plague_oc
10-16-2005, 04:39 PM
my friend found out his 12v rail was under 11v! lol and it KILLED his oc potential lol, although it ran stable overclocked somehow
Dave in Daytona
10-16-2005, 05:39 PM
my friend found out his 12v rail was under 11v! lol and it KILLED his oc potential lol, although it ran stable overclocked somehowI hope your friend now has a new PSU! :stick:
how much do multimeters cost and how do you use them!?!?
Dave in Daytona
10-16-2005, 06:22 PM
GB Electrical GDT-11 Digital Multimeter
These are inexpensive, from a "known-good" manufacturer & universally available in the US.
Walmart stocks them for just under $15.
$12.68 online: http://acmehardware.com/pd-5751052-GB-Electrical-GDT-11-Digi-Multimeter-Tester.aspx
GB: http://www.gardnerbender.com/
GB Catolog PDF: http://www.gardnerbender.com/Products/product_list/pdf/01GB_TESTERS.pdf
It is on page 14.
More info & places to shop: http://www.google.com/search?hl=en&lr=&rls=GGLD%2CGGLD%3A2005-08%2CGGLD%3Aen&q=GB+Electrical+GDT-11&btnG=Search
9V battery required & not included. The case color varies, the ones at Walmart are usually black.
If you don't already have one, this is a good one to get.
Dave ;)
EDIT:
Test like this: http://forums.extremeoverclocking.com/showthread.php?t=137886
Magnj
10-16-2005, 06:41 PM
I got one at radio shack for like 9$. I have to assume its close within reason.
Dave in Daytona
10-16-2005, 06:52 PM
I got one at radio shack for like 9$. I have to assume its close within reason.I hope it was one of their $25 to $30 models on sale! :rolleyes:
snowwie
10-17-2005, 07:57 PM
I hope it was one of their $25 to $30 models on sale! :rolleyes:
?
this (http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F011%5F008%5F002%5F000&product%5Fid=22%2D810) one not okay?
it's their least expensive digital, and it's what I use...it seems to work well
Dave in Daytona
10-17-2005, 09:22 PM
?
this (http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F011%5F008%5F002%5F000&product%5Fid=22%2D810) one not okay?
it's their least expensive digital, and it's what I use...it seems to work wellLinkie, no workie. :slobber: