1055t going down to x4

rory12 · 13 Nov 2010 at 15:14

Hi everyone, my brother recently got a 1055t 95w edition and when we were overclocking it and running linx and prime the other day every time it went above 48c it would drop the multiplier down to 4x.

his motherboard is a ASUS M4A78LT-M LE and its a real hunk of crap. We triple checked that all power saving were off and the cpu turbo mode won't even turn off in the bios you have to go into AMD Overdrive to disable it everytime you boot up.

According to AMDs site the safe temperatures for the 1055t 95w version is 72c so why would it drop the multiplier and the voltage when it reaches 48c? Am I missing something in the BIOS?

He's getting a new motherboard soon anyway, do you think the problem will be solved with a higher quality motherboard?

Thanks for your help.

gareth170 · 13 Nov 2010 at 15:37

could be the motherboard VRM's over heating.

looking at the picture on asus site theres no heatsink on the VRM's. also i'm guessing it's only 4+2 phase VRM

CAT-THE-FIFTH · 13 Nov 2010 at 15:43

I would place a fan over the VRMs to see if the problem persists.

mmj_uk · 13 Nov 2010 at 15:45

It could also be some sort of cool and quiet bug, have you got the latest bios?

Martini1991 · 13 Nov 2010 at 16:00

Core temp is wrong on Phenom II's.
More so with Thuban's.

It could be in reality about... 70c+ under load.

rory12 · 13 Nov 2010 at 16:03

The cool and quiet was quite buggy before but we did update the bios. I'm not actually sure if it fixed it though lol.

I'll tell him to put a fan over the VRMs to see if that helps, when he gets back from work. Thanks for the help.

Martini1991 said:
Core temp is wrong on Phenom II's.
More so with Thuban's.

It could be in reality about... 70c+ under load.

really?

chaotic_uk · 13 Nov 2010 at 16:12

Martini1991 said:
Core temp is wrong on Phenom II's.
More so with Thuban's.

It could be in reality about... 70c+ under load.

proof pls

gareth170 · 13 Nov 2010 at 16:18

chaotic_uk said:
proof pls

it is true. core temp give fake readings on phenom II..

you need to use hwmonitor and look at tmpin0 or tmpin1, depending on motherboard

rory12 · 13 Nov 2010 at 16:21

hwmonitor wasn't reading the temperatures for some reason on his PC :confused:

We were using AMD Overdrive to check the temps. We were looking at the CPU temp rather than the core temps. Would this still be a wrong reading?

Martini1991 · 13 Nov 2010 at 16:21

chaotic_uk said:
proof pls

Don't need you to believe me.

gareth170 · 13 Nov 2010 at 16:25

rory12 said:
hwmonitor wasn't reading the temperatures for some reason on his PC

We were using AMD Overdrive to check the temps. We were looking at the CPU temp rather than the core temps. Would this still be a wrong reading?

if your looking at the CPU temp then thats fine.

u could try EVEREST Ultimate Edition...

always monitor the CPU temp not core temp.

pswfps · 13 Nov 2010 at 17:22

CoreTemp is fine for Thuban - you just need to apply a 22*C offset for it to read right.

GoogalyMoogaly · 13 Nov 2010 at 17:37

pswfps said:
CoreTemp is fine for Thuban - you just need to apply a 22*C offset for it to read right.

It's closer to 14*C for me, but I find it doesn't scale perfectly. for example when the CPU temp is 42*C it's the same give or take 1*C. But when the CPU drops to 32*C CoreTemp with the offset can still read 36*C. It eventually seems to level out but it seems based on the Core Temp rather than CPU temp which don't always seem to change by exactly the same *C.

In my limited experience anyway.
I only use CoreTemp to see the load % and the core speed/multiplier (since I have Cool 'n' Quiet on).

mmj_uk · 13 Nov 2010 at 17:46

Aren't the Phenom temp readings rather meaningless? even AMD admit they aren't accurate...
http://www.xtremesystems.org/forums/showpost.php?p=4381651&postcount=11

pswfps · 13 Nov 2010 at 17:51

What are you comparing the CoreTemp readings to? Ie what software is telling you it's 42C? I think that is probably the socket temp if that was a load reading. The actual CPU temp is going to be about 6-8C than warmer than the socket temp.

pswfps · 13 Nov 2010 at 17:54

Yeah - PhenomII doesn't have individual core temp sensors like Intel parts do. It has an overall CPU case temp sensor instead. Not to be confused with the socket temp.

Orcvader · 13 Nov 2010 at 17:56

What CPU cooler are you using?

GoogalyMoogaly · 13 Nov 2010 at 18:09

Me? I've been comparing CoreTemp to the temps in HWMonitor and AMD Overdrive (both of which agree with each other). The display the Core temps and TMPIN0, TMPIN1 & TMPIN2 temps. I'm assuming (well, hoping) that TMPIN1 is the CPU temp.
The TMPIN1 temps are usually 12-15*C higher than the 'Core' temps.

gareth170 · 13 Nov 2010 at 18:12

mmj_uk said:
Aren't the Phenom temp readings rather meaningless? even AMD admit they aren't accurate...
http://www.xtremesystems.org/forums/showpost.php?p=4381651&postcount=11

well amd has always told me to monitor the overall CPU temp, not the core temp.

Dear Gareth,

Correct, as long as you are within the voltage and temperature guidelines you are ok. The temperature that should be monitored is the overall CPU temperature, not the core temp.

Best regards,
Jesse

AMD Global Customer Care

ATIorNvidia · 13 Nov 2010 at 19:36

Core temps ARE incorrect for Phenom II's, as Phenom II's dont HAVE sensors on the cores, they only have a socket sensor which is normally called either ''CPU Temp'' or ''TMPIN1''