OC an Intel mobo
Hi guys
Keep in mind I know nothing about oc'ing.... I have an Intel D875PBZLK mobo with an 3.0 P4HT . And as we all know Intel feels there bios settings are what you should use , so they lock you out of all the good stuff. And running at 3ghz with a 800 fsb should make most anyone happy right ? I was ..until I started hanging out here
You guys are bad. So anyway I was in the bios yesterday messing with ram timmings..( Couldn't get them to run at anything but loose 2.5 3 3 8 ) and was looking at a screen called "Burn-In Mode " with choices of -1 -2 +1 +2 +3 and +4% . So I picked +4% and rebooted and started both fah clients. They have been running stable for about 20 hours now, both have turned in units and started new ones (no errors ) Is this possibly a way around intels lock out ? Is this safe ? Am I missing the big picture ? Frame times on the WU dropped from 11min 50 sec. to 10:19 per frame.
Voltages in MBM have remained constant.
CPU temp went up to 44C from 42C
Check the following screenie and let me know if this is bad.
Thanks
Scott
Keep in mind I know nothing about oc'ing.... I have an Intel D875PBZLK mobo with an 3.0 P4HT . And as we all know Intel feels there bios settings are what you should use , so they lock you out of all the good stuff. And running at 3ghz with a 800 fsb should make most anyone happy right ? I was ..until I started hanging out here
You guys are bad. So anyway I was in the bios yesterday messing with ram timmings..( Couldn't get them to run at anything but loose 2.5 3 3 8 ) and was looking at a screen called "Burn-In Mode " with choices of -1 -2 +1 +2 +3 and +4% . So I picked +4% and rebooted and started both fah clients. They have been running stable for about 20 hours now, both have turned in units and started new ones (no errors ) Is this possibly a way around intels lock out ? Is this safe ? Am I missing the big picture ? Frame times on the WU dropped from 11min 50 sec. to 10:19 per frame.Voltages in MBM have remained constant.
CPU temp went up to 44C from 42C
Check the following screenie and let me know if this is bad.
Thanks
Scott
0
Comments
If you really want to squeze more out of your proc. I'd suggest getting an IS7 or IC7 Max3 Abit board and selling the Intel board.
Of course, all this talk about raising the FSB requires you to purchase a motherboard that allows for more extreme overclocks than a paltry 4%. Considering you're probably not going to reach much more than 3.4GHz-3.6GHz w/out some high-end cooling I don't think it's worth it to purchase a new motherboard (and possibly new RAM too).
On my 2.4g (533 FSB and everything else default) at work I can churn out a WU every 13-14.5 hours) My Home machine gets it done in 10-11 hours.
Madmat has good suggestions about the IC7 Max3 board. You should also look into getting some low latency PC 3500 RAM (3700 or 4000 is really overkill for a 3.0c) if you don't have any. Running the low latency RAM at 1:1 really improves performance on 865-875 chipsets.
edit// Man, I really need to update my sig...
Try 2.5, 3, 3, 7 or 2.5, 3, 3, 6. The middle ones should be ~1\2 (about 1\2) the last in the order you list them. I hope you are NOT running dual channel RAM,those RAM timings you have are more normal for dual channel and without a system with a mobo intended for it Dual Channel is useless on an Intel system. The last is a CPU wait spec the RAM expects in terms of time slices between requests, it could be with CPU spec stretched the way you did that the CPU does need to wait 8 time slices fo its time cycle between RAM cycles, but try lower timings and see what happens. Worst quick thing that might happen is a CMOS reset with battery jumper. You probbaly will not overheat RAM with either above RAM setting, though you might end up with a 2.7 or 2.8 voltage setting to get RAM stable at those given settings. I would not drop last spec more than down to 6 unless first spec can be 2 instead of 2.5.
Balancing act, with RAM settings. Better RAM will be CAS 2 instead of CAS 2.5 and then other settings -- especially last, can be lower. RAM will then run faster, bigger numbers mean slower running stick relative to CPU. Too big a last number setting, results in RAM waiting more than needed for CPU to send next flow of data or ask for data. Conflicts between what CPU wants and RAM expects causes timing interrelations problems, so you balance RAM and CPU rates.
John.
Can you clarify, John?
Would I be better off running single channel ?
Running in dual channel gives you twice the bandwidth that single channel does and since your FSB is QDR, you need dual DDR to match it.
Can you change the fsb at all on that mobo? (sorry if i missed it)
What memory do you have? (sorry if i missed it)
Dual-Channel memory is a necessity for today's high-bandwidth P4C processors.
Your P4C 3.0 (200x15) should be good for 3.3-3.6, depending on the stepping and core revision. However, with that Intel board the most you'll ever get is that extra 4% "Burn-In." A Springdale Motherboard (ie the Asus P4P800 or ABIT IS7) would do wonders for your machine if you plan on overclocking.
Scott, 44*C is fine for a P4. Don't worry about the temperatures.
Intel's desktop motherboards only allow that 4% "Burn In" to help system integrators burn the system in, by overclocking the unit slightly for the first 24 hours. You can run it at that "Burn In" level for days and still be 100% stable, as that Intel motherboard is stable as hell. There is no way around that lockout and there is no way around changing the memory speed, voltage or any of the fun stuff associated with overclocking.
When I installed my new vidio card today I put it back yo default. Just a plain old 3.0 ghz with 800fsb. Considering this machine was a step up from a 800mhz P3 I am really happy ! I was just curious really.
Thanks guys !!
Scott