Is it just me or is Turbo mode unstable for a 930 @ 4.2? I now have it stable at 4.2 200x21 (1.325v) 2000 RAM 7-9-7-24 but would like to push for 4.5. After experimenting for HOURS I discovered the following:
1. Anything over 4.2 (x21) needs ALL C-Stepping options OFF to even boot which adds an extra 3 degrees onto the max temp
2. Anything over 4.4 needs a LOT more juice. Even 1.41v couldn't bench without BSOD'ing..
3. Anything over 4.4 runs a LOT hotter. I'm talking 90+ under 100% load compared to 76 @ 4.2Ghz. Is 90+ dangerous?
4. It HATES 22x. 21x it is.
5. Turbo mode decreases RAM latency from 40.8 to 40.0 with CL7 timings in Everest
6. Holyoverclocking can consume your life... :-/
So I bumped up to 4.3 (205x21) and 2050 RAM with slightly higher RAM timings and a small compromise in temp. Seems stable but haven't run intensive tests yet. Superpi 1M is 9.5sec if I remember correctly. Quick bios rundown for current 24/7 setup:
CPU Freq: 4.2
DRAM: 2005
Bclock: 200
PCIE: 100 (+?) 8800GT OC
Multi: 21
Cpu vcore: 1.325
QPI: 1.5ish AUTO (1.4 or lower won't boot)
PLL: 1.810 (although it runs stable @ 1.65 I heard 1.8+ for Bloomfield, right?)
DRAM: 1.65 (Recommended by Kingston for 2000Mhz)
Sorry about the lack of detail. It's 1:22am and I should be sleeping. Should I persist with a 22x or 23x multi, or stick with the 21x and push the bclock? I'm still not too sure of the impact QPI and PLL voltages make to stability. If anyone could shed any light on this it would be much appreciated!
Thank you and goodnight
x
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