Help with CPU slowdowns

[davegraham]

Operating System?

also, please don't use gray as a font colour. it's incredibly hard to read against this background.

dave

[davijin]

yeah gray is annoying as hell. and as dave was asking os will help but just off the top of my head it may be something with the processor, possibly cooling or maybe wattage of the psu not being sufficient if your running too many devices on a psu thats too small. also if your running vista it may be a vista problem I know the 8 series cards were having problems with it but that wouldnt explain your rendering speed differences.

[imashination]

Ten quid says you haven't installed the motherboard smbus drivers.

[DCress]

Could be that your CPU is throttling down because of temperature over 80c. Have a look at your CPUs temperature under heavy use. If they are going over 80c that should be the problem.


Speedfan can monitor your CPU temperature http://www.almico.com/sfdownload.php


Hope that helps a little :)

[skidu]

Unlikely but, make sure 'EIST' is disabled in your bios, which controls speedstep on your processer, it basically lowers the multipler to save power.

[lots]

maybe wattage of the psu not being sufficient if your running too many devices on a psu thats too small.
Impossible. The thing with PSUs is basically, if you don't have enough power, the system reboots or turns off. It will never slow down because of a "lack of power". If you do have enough power, the thing runs fine.

I would check the temperatures. A quick test would be to touch the heatsink while the system is on, and doing stuff. If its really hot to the touch, then its most likely a cooling issue..

[tuba3d]

Lots,

Which temperature is ideal for processors (Intel Core 2 Duo for exmple) and mobo's? Is there any place where I could find information about temperatures? Like standards?

Tks
tuba3d

[Animare]

Hi guys, apologies for the Gray, I cut-copy pasted, didn know it turned out gray(the last thing I wanted to do was piss people off trying to tread it when asking for help)


The machines been offline for a few days, I tried a few of the things mentioned eg est and checking temps. Apparently the problem lies with my Mobo having 4 dimms in at once...I took out 1 dimm and it works fine now, almost a 50% speed increase!! So I think that my mobo just needs some updated bios, not sure when they'll get around to it.

Imsh Ill check out those smsbus drivers you were talking about and see if they help....

Im just glad to have the damn thing working....

Does anyone know if its ok to run 3 dimms instead of 2? like the amount of ram had to be exponential or something?

[Srek]

Animare: With 1 or three memory modules the board won't be able to use DDR, resulting in a speed hit. However if this makes your system work and you need the extra memory to work than this should be acceptable to you.

tuba3D: CPU temperatures below 50° C are fine, below 60° C acceptable. Above will very likely shorten the lifetime of the CPU and in worst case will make the system unreliable or even damage the CPU. The Motherboard temperature should be lower than the CPU temperature.
As a rule of thumb electronic components will live twice as long for every 10° less.

Cheers
Björn

[salmonmoose]

Impossible. The thing with PSUs is basically, if you don't have enough power, the system reboots or turns off. It will never slow down because of a "lack of power". If you do have enough power, the thing runs fine.

I would check the temperatures. A quick test would be to touch the heatsink while the system is on, and doing stuff. If its really hot to the touch, then its most likely a cooling issue..

That's a bit cruel :) AMD chips can remain stable far hotter than intel ones (my default 'Warning' sounds at 95°C - it doesn't shut down until 115°C) touching it is likely to cause injury. I don't like to encourage people poking around live machines either :)

Have you tried the beta BIOS listed here:
http://www.gigabyte.com.au/Support/Motherboard/BIOS_Model.aspx?ClassValue=Motherboard&ProductID=2424&ProductName=GA-965P-DS3

Gigabyte used to be awesome at updating their BIOS stuff, but no updates since April is a little slack :(

[Animare]

Arg one problem after another, but thanks for letting me know Srek

Do you know how much of a speed hit it is to be not running in Dual Channel?

Moose, thanks for the bios update, I might have to flash it.

Thanks for all the help guys.

[Srek]

Do you know how much of a speed hit it is to be not running in Dual Channel?
At worst a factor of two in memory speed. This sounds bad and it will show in benchmarks, but it's not necessarily noticable during normal work.
Cheers
Björn

[lots]

That's a bit cruel :) AMD chips can remain stable far hotter than intel ones (my default 'Warning' sounds at 95°C - it doesn't shut down until 115°C) touching it is likely to cause injury. I don't like to encourage people poking around live machines either :)
Whats the fun in that :P

Running even AMD chips at 95 C is a bit too hot IMO. 70 or below is a good rule of thumb. A properly mounted and good heatsink will keep a modern CPU at or below 40C in my experience. Temperatures above 70 cause instability, from my experience :P

In either case, the BIOS temperature reading is not always accurate. It depends greatly on just where the thermal probe is. AMD chips for example have several internal probes, but most BIOS only read one of them. Which one is anyone's guess :P But some will be hotter than others.

If you don't want to touch the heatsink :P then get a laser thermometer :) that should be a fairly accurate readout of the temps....

Also, for what its worth, AMD's specs tell you that the CPU can handle temps up to about 90C or 95C (Depending on CPU version). It is not advised to be that close to them. I set most motherboards to shut down at 70C. If the CPU gets that hot, there is something obviously wrong.

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