On 22/01/13 13:14, Nilesh Govindrajan wrote:
On Tuesday 22 January 2013 03:13:01 PM IST, Nikos Chantziaras wrote:
On 22/01/13 09:41, Nilesh Govindrajan wrote:
So I have this old E2180 processor and no money as of now to buy a new
rig :P
I'm trying to overclock my CPU using BIOS host clock control and
everything is fine at 2.6 Ghz up to bootloader.
Kernel segfaults. Any idea why? I'm running pf-kernel 3.7.2 and it
doesn't work with vanilla kernel either.
Intel MCE is disabled in kernel configuration.
When you raise the "host clock", which is the FSB, you are also
raising the frequency of your RAM. So make sure you select a lower
FSB:DRAM ratio in your BIOS. To begin with, set it to 1:1.
Also, if you only have the stock CPU cooler that came with it, you
won't be able to actually get a stable overclock. Your CPU's stock
frequency is 2GHz. Without a better cooler, you might get it to 2.2
or 2.3 maybe. But 2.6? That's pretty optimistic. I don't think
it'll work in the long run, unless you happen to have picked a good
chip that can be overclocked without raising the VCore.
But first, solve the RAM problem by lowering the FSB:DRAM ratio.
I don't get even 2.1 with the stock cooler. Temperature easily goes
above 75-80 (spec say high temp is 86) on the prime95 test. Quite easy
to cook it considering that I'm a Gentoo user :D
Not really worth that. Thanks for replies.
It really worth trying *lowering* VCore instead of raising it. If your
chip happens to be very good and deal with this without causing
instabilities, this will result in a big drop of temperatures. I did
this on a C2D CPU in the past. I lowered VCore and raised FSB. I ended
up with a good performance boost *and* lower temperatures.
Unfortunately, not all chips behave the same. It's hit and miss.
