Just got an AI7 3.2E/retail HSF rig running stock speeds and the CPU is doing 59c idle. Abit's EQ software beeps like mad because "PWM" is in the reds. Now my question is, what exactly is the PWM and should I worry about it hitting over 80c? The system doesn't seem to crash which suggests to me that the software is just not set within the right threshold but I need to be sure since I'll be using this rig to render large video projects. CPU hits about 70c under load. These results are with the standard retail heatsink and no crazy loud fans. Just a quiet Antec 3700 case with the 120mm fan blowing out the back. There's no intake fan as far as I can tell.
Damn! Prescotts do run hot!
- Thread starter thirdlegstump
- Start date
During P95, PWM just hit 87c...that's alarming without knowing what it is! I'm just letting it go while it's beeping just to see if it'll hold up.
You definately want to swap out the heatsink and a better case may help. One exhaust fan is not going to keep that thing anywhere near cool...
Sorry man. The letters were just jumping out at me. I couldn't resist. :beer:
If your system is Prime stable I wouldn't worry too much about it. Is it speed-throttling under the heat stress?
Why did you get a prescott? 
Anyway, they should be able to handle the temperatures, though whatever room the PC is in won't be needing heat... Get a more configurable temp monitor, like Speedfan. BTW don't Abit motherboards report temps a few degrees hotter than they actually are?
Anyway, they should be able to handle the temperatures, though whatever room the PC is in won't be needing heat... Get a more configurable temp monitor, like Speedfan. BTW don't Abit motherboards report temps a few degrees hotter than they actually are?Thing is Guapo, Intel shouldn't be shipping the CPUs with these HSFs if they aren't sufficient correct? So it suggests to me that the temps ARE normal for Prescotts. I want to know what the PWM means though and why that one is always in the red under some stress.
Originally posted by: Gurck
Why did you get a prescott?
I got the Prescott because as far as editing and rendering in 3dmax and Premiere go, it is the best bang for the buck. I won't be doing any gaming on this thing. It's also going to be in a big industrial room so it won't be affecting overall room temps by much : )
MBM used to do it but was discontinued. I'm sure Abit has a utility that'll do it. uGuru comes to mind, I'm not sure that's it tho.
PWM in Abit EQ is the temp in your power supply.
Abit mobo does seems to report temp a few degrees higher than the actual temp.
BUT, 87c is way too hot...
power supply is usually designed to run under 50c
Abit mobo does seems to report temp a few degrees higher than the actual temp.
BUT, 87c is way too hot...
power supply is usually designed to run under 50c
Spicedaddy
Platinum Member
- Apr 18, 2002
- 2,305
- 77
- 91
From the abit forums:
What is the "PWM temperature
"PWM" is a circuit on mainboards to convert the voltage level from power supply unit to provide specific voltage to components (ex. Provide CPU with core voltage). We know that CPU could be the hottest component inside a PC system, and we always care about the heat dissipation of it. Actually, the PWM circuit is quite hot too; especially when CPU is at full loading, large current passes through the PWM circuit and was converted to necessary CPU core voltage. Some ABIT boards show "PWM temperature" on BIOS setup page and Windows hardware monitoring tool. This provides users possible hottest temperature inside the PC chassis, and check whether the air conditioning inside the chassis needs to be enhanced or not. When CPU works heavily, the CPU temperature could be around 60 degree C; nevertheless, the PWM temperature may achieve 70 degree C or even higher; depends on the design of thermal convection. The safety limit of the PWM temperature is about 120 degree C, however, we strongly recommend improving the air flow and heat dissipation inside the PC chassis once it rises to 100 degree C.
What is the "PWM temperature
"PWM" is a circuit on mainboards to convert the voltage level from power supply unit to provide specific voltage to components (ex. Provide CPU with core voltage). We know that CPU could be the hottest component inside a PC system, and we always care about the heat dissipation of it. Actually, the PWM circuit is quite hot too; especially when CPU is at full loading, large current passes through the PWM circuit and was converted to necessary CPU core voltage. Some ABIT boards show "PWM temperature" on BIOS setup page and Windows hardware monitoring tool. This provides users possible hottest temperature inside the PC chassis, and check whether the air conditioning inside the chassis needs to be enhanced or not. When CPU works heavily, the CPU temperature could be around 60 degree C; nevertheless, the PWM temperature may achieve 70 degree C or even higher; depends on the design of thermal convection. The safety limit of the PWM temperature is about 120 degree C, however, we strongly recommend improving the air flow and heat dissipation inside the PC chassis once it rises to 100 degree C.
In other words: get some better case ventilation going. 2 intake fans, and 2 exhaust fans might be in order. Go with low-speed FDB fans to keep noise to a minimum.
Doesn't seem to help much although I'm sure it helps reduce HD temps a bit. So next thing would be heatsinks on the mosfets...come to think of it, I think I may be overdoing it and this should work fine for years since I'm not overclocking or anything.
Jesus, are you sure its 59C? My 3.4ghz Prescott runs around 47-49C idle, of course using stock cooling. On load it reaches 60-62C... Theres definately something wrong with either your HSF or the thermal diode.
And isn't PWM a way of modulating the CPU fan speed according to temperature?
If you can put a 120mm intake fan in, then put a 120mm intake fan in..there are a lot of good 120mm fans, and they will push more cool air through the system than that puny 80mm fan you put in there..
TRENDING THREADS
-
Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000)- Started by DisEnchantment
- Replies: 25K
-
Discussion Intel Meteor, Arrow, Lunar & Panther Lakes + WCL Discussion Threads
- Started by Tigerick
- Replies: 24K
-
Discussion Intel current and future Lakes & Rapids thread- Started by TheF34RChannel
- Replies: 23K
-
-
Facebook
Twitter