Starter for 10 on Overclocking

[pegasus1]

ok cool, thanks for clearing that up.
so for 3.2Ghz i'm looking at 400*8. I assume 400 is a reasonably safe FSB overclock.
Also for Blue4ice's 3.6Ghz OC i guess he's gone 450*8? is that high?

400 fsb x 8 would indeed give you 3.2ghz with your memory at 1:1. You do however have 4 x 1 gig memory sims which could cause a problem when OCing. Not all mobos like to OC all 4 mem slots, my mobo is hit and miss at it even with the latest bios.
so you could up the fsb to 450 and keep your mem at stock (400) if you encounter memory instability and if your mobo allows you to run a divider.

 

[allday247]

I've actually got 2 x 2GB sticks (Geil Black Dragon) 800MHz 5-5-5-15. The OP had 4x1GB.
Well i think i'll push for that 400FSB soon wanna get at least 3GHz on the E6750.

 

[pegasus1]

I've actually got 2 x 2GB sticks (Geil Black Dragon) 800MHz 5-5-5-15. The OP had 4x1GB.
Well i think i'll push for that 400FSB soon wanna get at least 3GHz on the E6750.

Sorry mate, ive been juggling with work and about 3 concurrent threads all OC based on here.
Have a google for what kind of speed that mem is usually capable of.

 

[a1ias]

I need to have a play with the divider after another read.

I did notice actually that as I increased the BUS to 360, the DRAM Freq. went up from the 408 to 432.

I'm guessing that as I tweak up the CPU BUS Speed and Voltage, I need to tweak down the memory divider to try and keep the frequency as close to 400 as possible?

 

[pegasus1]

I need to have a play with the divider after another read.

I did notice actually that as I increased the BUS to 360, the DRAM Freq. went up from the 408 to 432.

I'm guessing that as I tweak up the CPU BUS Speed and Voltage, I need to tweak down the memory divider to try and keep the frequency as close to 400 as possible?

If you put the divider to 1:1, you memory will run at the same speed at the Mobo.
Example
FSB at 400, memory at 400, divider at 1:1, Multi at 10 = CPU at 4.0ghz

Remeber that not all bios's will use the same terminology when reporting the FSB.
Example
PC6400 ram runs at 200fsb but as it is DDR it actually runs at 400fsb. The FSB on intel system is quad pumped so your 400 fsb is actually 1600.

A mobo claiming 1333FSB support is designed for processors running at 333 (x4 = 1333)
My Mobo requires that you input the required FSB as the quad pumped figure (ie 1333), other Mobo's may require you input the DDR2 speed (ie 333) but essentaily both are the same.

My 3.4ghz in sig has my fsb running at 485 ( x 7 multi) but i have to input into the Bios the quad figure of 1942, but they are the same thing.

 

[a1ias]

I'm starting to enjoy this oc malarky

Latest reading (now using PC Wizard 2008):

Is that core temp acceptable or a little high?



I've d/l Prime95 v25.5 and will let it run through th ewhole day tomorrow while at work.

 

[sulli]

Is that temp at idle? If so then the load temp may be a little high .
edit: u should also dowload coretemp to get more accurate temp readings. Here http://www.alcpu.com/CoreTemp/CoreTemp.zip.

 

[a1ias]

Ok, ran P95 v25.5 for 9 hours today on the following o/c:

No errors reported so that can only be a good thing I guess...

I've now upped the FSB to 400 and divider is still at 1:1, no voltage changes, so will run P95 again tomorrow and report back

I tried to run that CoreTemp proggy on Vista Home Premium but just get a bagload of errors, even after trying to run it in admin on compatability mode :/