Not being an avid gamer and primarily focused on building production boxes, never spent much time seeing what I can get outta any individual box.....if it took more than 15-20 minutes configuring BIOS, I wasn't interested. My usual approach was to use built in BIOS OC settings to get that 20% OC and then try and tone down things a bit to make it run a little cooler w/o sacrificing that 20%.
With my son building his 1st box paid for w/ his own money, this gave us a project to work on together which, as any Dad will tell ya, 18 year old kids asking to spend time w/ Dad is a rarity to be treasured

. So after a month of chasing down Event Viewer errors w/ Win7-64, the 4 day weekend was our time to try and see what we could do on this.
Have downloaded many OC guides and the R2E MoBo gives us plenty of tools. He blinged it up w/ an OC Station which I only went along with cause it was a great fan controller and seeing as he spent his own money, he was entitled to a little bling.
System includes R2E MoBo, i7-920 (DO), Mushkin CAS 6 (998692) w/ 6-7-6-18 timings.
Went looking for a 24/365 stable OC and with a CPU voltage of 1.2 and hit a wall at BCLK 177 .... no raising of CPU, QPI etc voltages would do squat and get me stable at 177. Have since found I can drop CPU voltage to 1.125 and scored even lower core temps (59/56/57/56 under 100% load) ....and this got me a stable 177 under OCCT (haven't prime95'd yet).
Have tried ..... CPU voltages up to 1.45 ...... QPI voltages up to 1.3875 ...... and DRAM from 1.56 to 1.65 ..... but I find it puzzling that 1.125 -> 1.45 on CPU and QPI from 1.363 (under Auto setting) to 1.3875 and DRAm from 1.56 to 1.65 a won't get me even one more BCLK.
Our goal for this profile was to get a 40% OC w/o disabling HT or any other BIOS features and we've done that.... We are just trying to get our minds wrapped around the fact that those voltage increases are producing nada results.
Realizing that this is elementary for you guys and once we get done with this profile, I'll start on our 4.2 GHz profile which ya'll might find more interesting....but in the meantime anyone have any suggestions to try and pinch our 177 BCLK a bit further and why substantial voltage increases not having any effect at all ?
Here's an image of the current BIOS settings with the exception that:
CPU voltage now at 1.125
59/56/57/56 under 100% load
BCLK now at 177

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