gurutoo

The KingstonLL ram in my rig cost $245.00 1 year ago from newegg.

Running 1:1 it will hit about 215 fsb. If changed to 5:4 it will hit about 230fsb.

That seems pretty damn slow for kingston HyperX 2-2-2-5 LL hand picked BH-5 matched pair.

NOTEWORTHY: While runnning 5:4 at 3290MHz this rig turned in a 15,500ish
2001 3Mark. After resetting to speed/1:1 and dropping down to 2800(stock) the same rig turned 17,700!

3290 is all I've been able to coax out of this setup-Is that 490MHz overclock about all I should expect on air (Zalman)?

zackbass

What do your temps look like? Also, is that 9700Pro overclocked?

It seems to me like you should be getting some better FSBs out of that setup. I don't know how much of my overclock can be attributed to water cooling, but at the very top I can run a 285 FSB with my 2.4C with the greatest memory multiplier and 3-4-4 timings. I've got a P4C800E with 512MB of Corsair TwinX PC-4000. It's very hard to attack a problem like you're having since you can't eliminate any variables, you'll only know there there was ever a problem when it somehow ends up being fixed.

UNCLBEN

That's about the FSB that I was stuck at with my 2.6C and IC7. It was limited by my memory (or rather, memory controller), not heat or internal CPU clock. My RAM is CH-5 though, which IIRC is notoriously finicky with 875P boards.

Once I get my new rig fully functional and overclocked, I might go back and try again to see how high I can push the 2.6C. That 7000-AlCu is plenty of cooling power at 12 V.

tituswolf

what voltage are you giving to the memory?

gurutoo

VDIMM 2.8-2.9V
CPU 6.675V

gurutoo

Temps are ok-32C at idle
9700Pro is running stock.

r'aggrostic

Is that as high as your mobo will allow for vdimm? I've read at lots of other forums that to get that bh-5 motivated you want to really crank it up. That said, I wouldn't just set it to 3.3v and hope it doesn't torch your dimms, but I have def. seen it posted (dfi-street) that 2.8 or 2.9v is not enough for bh-5. I personally run my mushkin level 2 black @ at least 3 volts 24/7 regardless of clocks. Back when I was working on finding my highest fsb, it ran at 3.3 without issue for days: and my board overvolts vdimm.

I don't know intel hardware very well, but when overclocking my nF2 rig I was able to get 15 more fsb by changing command rate (cpc) from 1T to 2T. Doing this killed my performance and made the extra fsb not worth it, but your case might be different.

Either way, I'd try bumping vdimm .1 or .2 if your board allows.

gurutoo

The AI7 allows Vdimm voltage up to 3.2 In fact when I built this rig it refused to even boot at stock voltage. I had to boot it with some Crucial ram and up the Vdimm to 2.7 in the bios. Then I shut down and put the Kingston HyperX back in.

Guess I'll try 2.9-3.0, maybe loosen my timings to 2.5-3-3-7 keeping it 1:1 and see what happens.