CPU And DRAM Overclocking
The same 1.40 V core limit was chosen for both the new and previous build, since we’re still a little concerned about the short-term deterioration that we’ve seen at 1.45 V or more. Once again, the processor seemed eager to shoot to 5.00 GHz, though extended testing proved it was only stable over the long term at 4.80 GHz.
Increased memory frequencies were far more difficult to achieve using this motherboard, though we might have had worse luck with the second set of memory modules. After a lengthy battle to repeat a stable DDR3-1866 CAS 8-9-8 from our previous build, we were forced to settle for DDR3-1600 CAS 7-8-7.
The P67A-GD65 (B3) responded to our overclock by disabling C1E and EIST. Doing so drastically increases low-load power consumption, while providing minimal benefits in performance consistency. We re-enabled these features.
Using the “Low VDroop” setting from BIOS along with its 1.376 V CPU Core setting allowed our CPU to increase from 1.34 V at low load to 1.40 V at high load.
Now when you win the second PC, there will be no need for sadness: You can upgrade it with the motherboard from the first!
This is why the SBM is the best thing going. A few other sites do similar articles, but Tom's is far and away the champion. Another well respected site doesn't even build the systems, but Tom's builds three (or four!) and gives 'em away like sweet delicious candy. Every build has its's own quirks, issues, and performance wins (losses too) that can't always be understood until the gear arrives and goes together. If system building was entirely predictable, no one would build their own. It's just more fun this way.
Anyway, i never understood why intel went with just 16 lanes on SB yet all the mobo makers market their ultra high end cross fire boards. :pt1cable:
Thing I'm wondering is, if intel switched to 24 lanes, could the graphics cards work at 12x each for 2 way, and 8x for 3 way? i know a full 32 lanes is unlikely, that's why I'm asking.