• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

CPU self overclocking under load?

S

Snowdog

[H]F Junkie
Joined
Apr 22, 2006
Messages
11,257
This is my first core processor.

I have a e2140 on a P35 DS3L Motherboard.


When I check CPU-Z at idle it is running 200MHz * 6 = 1200MHz. Which I understand is speedstep turning down the multiplier when idle. It is setup to run a default 200MHz*8 = 1.6GHz.

Now when I run Orthos, it immediately jumps to * 8 as expected. Now the strange part, the bus jumps up to 228MHz (still *8), putting the processor at 1.8GHz. Strange?
 
Yeah its a feature in bios, it's either called eist or speedstep, it basically just flops the multiplier around when the cpu isn't being stressed or is stressed, I started using it to save electricity.
EDIT: OK so I actually just read your post, you're going to have to turn it off or it'll keep doing it no matter what the fsb is at.
EDIT 2: Ok so now I really read your post, I dont know how to help you lol, sorry I'm such an idiot
 
I think there was some lame turbo feature activated. Off now. No more FSB changes.

Running at 266*8 now. With stock cooler, speed control disabled. I tried 300x8 but it wouldn' start. :-(

Core temps really jumping around 52-57 C in a second while running Orthos.
 
Ouch, I was able to hit 300+ on my e2140 easily...333x8 on stock volts (CPU - forget where my ancillary board volts were) ) if I recall. Currently @ 368x8 @ 1.355. Of course I'm not running a GB board (the abit in sig), and am on water - I was in too much of a hurry to futz around w/ the stock cooler when I got my new parts ;).

You might want to try a tiny bump in vCore and you might be able to get over the 300 hump (still @ 1.325v/stock or no?)... Temps are getting up there, but I think you could get away w/ a small bump and not get into a dangerous temp zone. Also have you try bumping the MCH voltage, or anything else? Maybe it's the board in need of some more power, and not the CPU's fault directly.

[edit] Come to think of it, how are the board/MOSFET/etc temps doing, and how's the case cooling? Perhaps you don't have enough airflow and that's causing the issues?
 
Following the recommendations in that good OClock thread Abu posted. I am now running with 1.35 volts bios. Testing 2.4GHz right now (8*300).

Case cooling is ok. I have an Antec solo with two 92mm intakes and 120mm exhaust, I don't have speedfan installed yet for mb/case temps though.

I am limited by the crappy stock intel cooler. The one on the 2140 is pretty bad. All aluminum design. I think this might be as high as I go as it is 62C at 15 minutes into Orthos now.


2.4GHz is fine for a while. I plan on getting a nice quad Penryn when they are cheap. I am stepping up from a Barton XP 2500, so this is a BIG improvement. :)
 
You must log in or register to reply here.
Back
Top