P35C-DS3R max CPU host frequency help

[Yozzer]

I have been running with a host frequency setting of 389 and a multi of 9 in the bios, (F10) giving me 3500mhz, and I used a memory devider of 2 giving me a total of 778mhz for the memory stable for some weeks now.

I bought 4gb of Reapper PC8000 as I was moving ob to Vista 64 bit, (dual booted with XP), and decided I would like a ratio of 1:1 between the CPU and ram, so started of from square 1 to see how high a host cpu frequency I could get but hit problems at 441.

I had the CPU multiplier at 6, and the memory devider at 2, so at 441 I was well inside the spec of the Reaper which is 1000mhz at 5 5 5 18. I went to a memory multi of 2.5 and checked to make sure the ram was OK, and it worked 5 5 5 18 up to 1020mhz OK so it was not this cutting off.

I tried really loose settings for the Ram, and upped the chip voltage by .1v, but could not get beyond 440. At this setting it works fine with memory at 880mhz and the CPU at 2640mhz, but failed at 441.

I have a Q6600, can anyone advise if this cut off for the host frequency is normal for a P35C-DS3R rev. 1.1.
I would like to have run the memory at 1000mhz 1:1 with the CPU, but it looks like 880 is as high as I can go.
Anyone any ideas or input anyone?

Many thanks.

 

[Jokester]

It's unlikely you'll be able to get 500MHz out of that CPU. As it is you're probably looking at upping the chipset voltages to get more out of the FSB.

 

[Yozzer]

Thanks for the reply Jokester, is it the combination of having a Q6600 and the P35C that is causing the cut off then, not just the motherboard? I just wondered if it was a problem having the 1.1 version, (I do not know the difference between the revisions, but it is up to 2.1 now).
Thanks, Brian

 

[Jokester]

It's primarily down to the CPU, you won't realistically get much more out of a top end X38 board compared to a P35 board.