Want to OC Biostar & Semp 2800+, please

[Neos]

I just have not got it yet. I read the 'Quick & Dirty' guide, but the settings in my Biostar bios does not match up.

Can someone tell me which of these correlates to HTT/FSB ..CPU multi to 6 or 7..etc?

Options in my bios when set to manual overclock:
CPU Voltage Regulator [StartUp] .........from 1.40 - 1.80 or so (if I recall right)
Memory Voltage [2.60V]
CPU Frequency [200] ...goes up to 450
HT Frequency [Auto] ..can be set to 1x- 4x
PCIE Clock [100Mhz]
Memclock Frequency [200Mhz]

My instinct is to bump the CPU Frequency & the HT Frequency a bit at a time till it gets unstable, and then start working with the voltage a little.

Please help me to understand this better.

 

[Zap]

Set HT frequency to 3x and memclock to 133, then start cranking up the CPU frequency to, oh, say 300MHz, and see if it'll turn on.

 

[Neos]

Thanks.

I found another post that described something pretty much like that. Right now I have the memory at 166 with 3x & 266 FSB= over 2100Mhz.

Is it desirable to try and get the 4X setting to work in HT frequency? That means 4 x ?...what?

 

[Green Man]

The HT multi is times the FSB, so you're at 3 X 266 = 798.
If you up the HT to 4x it would be 4 x 266 = 1064
It should be doable, but don't stress out about it. Don't ever lower your overclock for a higher HT speed. It really doesn't make too much difference in most things. It controls the bandwith between your CPU and your peripherals, which usually isn't maxed out anyway.

 

[Neos]

OK - so the memory speed x the HT setting gives me my HT speed. If that is 798, how does that translate to 2.12 Mhz - or is it part of the equation at all?

I tried to 133x4t ...would not start.

This is helping. Thanks.

 

[Zap]

I have no idea where you got 2.12MHz...

Socket 754 HT bus speed defaults to 800MHz so 798MHz is spot on. If your memory is not ultra-leet-expensive stuff, then it's being overclocked right now to around DDR443 and is probably holding back your CPU overclock. Just to see what you can do with the CPU, drop memory to 133 and keep pushing that CPU. If you get anywhere near 300MHz, then memory will be running at DDR400 - perfect! HT will be running at 900MHz which is a mild overclock and should be fine.

 

[Neos]

Sorry, I meant 2.12 Ghz. That is the reading @ My Computer properties.

I will give that a try, Zap. Thanks.

 

[Neos]

OK - just piddlin. I set the mem to 133, leaving the FSB @ 266. It would not start.
In my thinking - going from 266 to 133 mem and leaving all else the same should be LESS of an overclock and do fine. Does anyone have an idea why not?

When I got back to the bios, I reset the mem to 266 - and she booted up fine. Oh, at the start I had also boosted the voltage just a notch for stability - and I have left it there all along.