I seem to run into some issues Overclocking my 4X4G of Corsair Ram, the situation is as follows:
Hi, I was attempting to overclock my 4 sticks of Corsair Vengeance 4G DDR3-1600 Cas9 1.5V Ram
on my ASRock Z77 Extreme 4 board(system in my sig), with all Timing set to Auto.
Command Rate in both cases is 2T
First My Ram would not pass Prime Blend at 1600 Mhz 9-9-9-24 @1.5V(I would get individual core failure yet no blue screen) though it would pass Memtest86+ v4.20 without problem, so I raised the Dram Voltage to 1.53V and run Prime Blend(1hr 45 min) and Prime Custom(1 hr) Torture(14G Ram used) , passed both
I first tried to raise the XMP profile to DDR3-1866 with the voltage unchanged(1.53V), this failed Prime Blend in 4 min.
I upped the Voltage to 1.56V, this failed Prime Blend in a few mins as well.I upped the Voltage to 1.6V(1866Mhz 9-11-11-28 1.6 V ), this passed 30 min of Prime Blend then I shut the test off
I tried to set the timing in Bios manually(from the auto 9-11-11-28) to 9-9-9-24, you probably know what happened, this stupid move caused my computer to auto shutoff during boot.
I pressed Clear CMOS button, rebooted and went back to DDR3-1600, 9-9-9-24 at 1.53V and all is well.
1. how much extra performance do I gain at 1866Mhz 9-11-11-28 1.6 V vs 1600Mhz 9-9-9-24 1.53V? I don't mind being a min slower in video encoding but if it affects my gaming performance I might take the 1866Mhz.
2. Is the extra Dram Voltage an issue(I hear you are fine at anything below 1.65V, but the board allows a max of 1.8V)?
3. I plan on stress testing my OCed Ram with a longer Prime Blend & Prime Custom 14G Ram run(each for an hour) and a Memtest86+ run, is this sufficient and if not what else should I do to test my Ram.
4. I hear that not OCing your Ram reduces your CPU OC ceiling by about 200 Mhz, is this true?
p.s If you have experience OCing 4 sticks of Ram, how much could you push it? Do you recon I can push mine to 2100/2133 at 1.65V?