Long time lurker... first time poster to what I believe is an xtreme overclock
E6850 L719B095
Abit IP35 Pro (Beta 12.01)
2x1GB Crucial Tracer PC2-8500
OCZ 8800GTX
K|ingp|n Dragon Evo rev 2.4
Inside of the dragon evo. This thing is a work of art!
Setup:
First thing I did was go for max validation. Bad idea. Since this was new territory for me, I didn't know what to expect.
I found out after about 2-3 hours of messing around that my PL (performance level) was too tight beyond 555ish.
Interesting enough when running 4-4-4 my PL was reading 7 for one stick and 8 for the other.
Below 555, I could set PL to 7 for both and had no problems.
Above that when I tried to run superpi at PL 7, it would crash.
I thought it was a vcore limitation or my board.
Finally I found out that changing the PL from 7 to 8 made things all better.
So my max validation was actually my max 1M pi. Next time I will loosen up my mem timings and go for broke!
http://valid.x86-secret.com/show_oc.php?id=240190
Last night I benched superpi 1M with the goal of sub-10 seconds in mind...
Best score:
10.172s @ 4.95 ghz
I ended up with a little condensation on the right top corner of my board and my bench session was brought to an end.
So I picked up where I left off today.
First goal: sub 10 second 1M superpi:
9.984s @ 5.05 ghz
Best: 9.890s @ 5.1 ghz
I did a few runs at 5130 mhz but couldn't get the screenshot captured fast enough (anyone recommend a good program to capture screens with one button?)
Next goal: sub 10 minute superpi 32M
10min 1.282 seconds @ 5004 mhz (SOOOOO CLOSE!!!! }
After so many runs, I decided to cheat
9min 59.078 seconds @ 5022 mhz
I need a little more optimization to get that sub 10 at 5 ghz. Will have to try again.
Now onto 3d benching. This was my first experience with sub-zero cooling my gpu so I had no idea what to expect. I set vgpu to 1.50 and gave Aquamark a go as well as 3DMark2k3. I was in the middle of 3DMark2k5 when I ran out of dry ice.
Best aquamark
268,111 @ 5040 mhz
825 core / 1115 mem
I still have a lot of tweaking to do for 3dmark... but this is one completed run of 2k3
55,868 @ 5013 mhz
800 core / 1100 mem
Lessons learned:
- GET MORE THAN 25 LBS OF DRY ICE ($15 for 25 lbs)
- Better insulate my gpu pot. I had water in the pci-e slot when I was done (and I had forgotten to put some dielectric grease on the gold fingers )
- Read up on more optimizations for superpi benching
- Read up on more optimizations for 3d benching
- Figure out why my vgpu voltage was drooping so much. (1.5 set = 1.43-ish load with 3dmark2k3 and 3dmark2k5)
Any tips, suggestion, comments are appreciated!
Special thanks to K|ngp|n (for the cpu pot), AndreYang (for the gpu pot), and Boshuter (for putting up with my rambling while I benched). Thanks everyone!
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