DDR3 Memory OCing

[Zeitgeist0190]

Hi Folks,

I'm mostly new to this overclocking game but i'm comfortable around hardware and after finally getting myself a reasonable rig this time round - i'd like to push it's envelope.

Key Specs:
Mobo: Gigabyte z68ap-d3
CPU: Intel core i7 2700k @ 4.2GHz
RAM: 16GB DDR3 (2x4GB Mushkin Blackline Supporting 800MHz and 2x4GB Crucial Average Joe ram)
GPU: 1x 6950HD w/ unlocked shaders @ 850Mhz/1250Mhz

Cooling: All Air based - case temps on normal usage hover around low 30s, under load around high 40s-mid 50s

I've things like my CPU overclocked by ramping up its multiplier, the video card core is upped by 50MHz and I would like to have my ram at it's full potential.

The ram I initially got was the mushkin blackline which supports XMP-1600. I had it running at this and then eventually got another 8GB of crucial ram for free (hey, free ram!).

My question is: Since the Mushkin supports running at 800MHz, is it possible to overclock the crucial memory to run at these speeds?
Obviously this'll be detrimental to it's lifespan but I plan on replacing it with identical mushkin modules whenever I've the spare cash to keep it homogeneous.

Also, I assume I can expect a nice slight performance boost if it doesnt throw it's toys out of the pram?


Thanks for taking the time to read and hopefully answer, sorry for such a long post on what i'm sure is a common subject.

 

[redduc900]

Without knowing the model of Crucial modules, it's impossible to suggest whether they will run at DDR3-1600 or not. Post the EXACT model of both the Mushkin and Crucial kits, including rated frequency, timings, and voltage. Or post links to Newegg or other online store showing the above info. You could also post pic's of CPU-Z open to the SPD tab, w/ each individual module selected from the drop-down menu.

 

[Zeitgeist0190]

My apologies, I was in work when I made the post. I realised I would probably need more specific info.

Mushkin Kits: Part 991995 pc3-10700 on 9-9-9-25 667MHz but supports XMP-1600 on 9-9-9-24 in cpuz at 1.5V
Crucial: Part: CT51264BA1339.M16F pc3-10700 on 9-9-9-25 667

all at 1.5V.




both are identical kits. so 2 of each.

 

[redduc900]

At the default 100 BCLK, just adjust the DRAM frequency to DDR3-1333, w/ timings set to 9-9-9-25, and DRAM voltage set to 1.50V. Or you could try setting the DRAM freq. to DDR3-1600, w/ the DRAM voltage bumped up to ~1.60V, and the timings left at 9-9-9-25. Or you could try adjusting the freq. to DDR3-1600, w/ the timings set to 10-10-10-28 at 1.50V. Whichever route you choose, make sure to boot to Memtest86+ to check for stability before attempting to boot into the OS. Personally, I would just remove the Crucials, set the DRAM freq. to DDR3-1600 at 1.50V and be done w/ it. Unless of course you absolutely need 16GB of RAM.

 

[MGF Derp]

At the default 100 BCLK, just adjust the DRAM frequency to DDR3-1333, w/ timings set to 9-9-9-25, and DRAM voltage set to 1.50V. Or you could try setting the DRAM freq. to DDR3-1600, w/ the DRAM voltage bumped up to ~1.60V, and the timings left at 9-9-9-25. Or you could try adjusting the freq. to DDR3-1600, w/ the timings set to 10-10-10-28 at 1.50V. Whichever route you choose, make sure to boot to Memtest86+ to check for stability before attempting to boot into the OS. Personally, I would just remove the Crucials, set the DRAM freq. to DDR3-1600 at 1.50V and be done w/ it. Unless of course you absolutely need 16GB of RAM.

^ This. It seems the Cruicals are close to be ing rated at 1600 in there JDEC so they should get there with eithier more volts or losser timings. 1600 9-9-9 @ 1.6-1.65V is probably do able if not lower volts. Like stated just test for stability although I would just do a superpi 32M run for quick and dirty stability test.