Core i7/X58 Overclocking Thread

[Pisklink]

....QPI/DRAM voltage to 1.43750V (also a start, you can lower this later as well through trial and error), and DRAM to 1.65681V.

The high QPI/DRAM voltage is there to try to give you stable 211MHz BCLK.

Do you think it can do any harm for a 24/7 OC to use QPI/DRAM and DRAM voltages higher than Intel's max. recommended voltages (1.35v and 1.65v respectively)?

[YukonTrooper]

Do you think it can do any harm for a 24/7 OC to use QPI/DRAM and DRAM voltages higher than Intel's max. recommended voltages (1.35v and 1.65v respectively)?

It will just degrade your parts quicker over time, but your parts will degrade at any voltage. Still, at those levels, I would expect your hardware to last longer than you'll have it.

[dejanh]

Posted this in the R2E thread earlier with the new R2E 1104 BIOS that now includes TDP override (finally!)...

Here is a 4140MHz 20-pass LinX run with 1804MHz DRAM, 3600MHz Uncore, 3960MHz QPI. DRAM is 100% stable and has been extensively tested in both Memtest86+ 2.11 and Memtest HCI. The settings are as follows...

TDP Override - Enabled
BCLK - 180MHz
Multiplier - Auto (22x, 23x with Turbo)
DRAM - 1804MHz, 8-9-7-19-1T
CPU Voltage - 1.36250V
QPI/DRAM Voltage - 1.35000V
DRAM Voltage - 1.65681V
Load Line Calibration - Auto

All else is on defaults...here is the screenshot...

[Pisklink]

My results at this moment

CPU Freq.: 4020 Mhz
QPI: 3812Mhz
Multi: 18x
LOAD vcore: 1.288v (CPU-z)
CPU VTT: 1.90v
QPI/DRAM: 1.35v
Hyperthreading: OFF
LOAD core temps: 57 / 58 / 60 / 55
Cooling: Water



On the short term I will try to get 210 x 20 stable. Then I will make a choice between 212 x 19 or 210 x 20 OC. The advantage of 212 bclk is that my RAM runs at 1700Mhz (8-8-8-24-1T) but on the other side with 210 bclk my CPU runs faster and RAM could get tighter timings. What would you suggest?

Will also try to get a 4Ghz setting stable with HT enabled. Tried that today for a bit but seems it needs a lot more vcore then (like 1.42v under load in CPU-z). Should I try to increase QPI/DRAM voltage when enabling HT?