Lately I've been getting more familiar with overclocking my system, and I'm starting to get a lot more comfortable with it. I thought I'd share my results for now and I'll update as I squeeze every last ounce out of it. I find tinkering with a rig just as fun as enjoying the increased performance while gaming.
I've only had a mild OC on my cpu until now. Stock, my dual core 4400+ runs @ 2.20ghz, and it has been running at 2.37ghz (215x11) for the past few months. I've been getting antsy to push it further and last night I decided to play with it.
I immediately attempted to reach 2.7ghz with a few different settings combinations, but my cpu just didn't want to do it. It would fire up, but it wasn't entirely stable. I dropped it to 2600mhz, and it did great. I then pushed it up to 2650mhz (241x11), and that's where I decided to leave it. The best I could do with my ram at this speed was (according to cpuz) 189mhz (ddr378), as my next option was 221mhz (ddr442), and I've yet to get my pc to post at all above 215mhz. Wish I knew more about OCing ram when I bought it, as I would have gotten pc3500 or better had I known.
For my setup (Asus A8N32-SLI Deluxe) I've been playing with just a few settings in the bios for my basic OCing:
FSB frequency CPU multiplier K8-NB (LDT) Frequency Memory Clock (limiter)
and occasionally.... CPU voltage DDR vCore
There are plenty of other settings to mess with, but I'm not yet ready for prime time.
I'm not big on "burning in" an overclock overnight with prime or anything else, I just use the quick ones to simulaneously test for stability and performance. I'm also benching the perfomance difference between my stock 7900gt and the volt modded OC results.
CPU AMD Athlon64 X2 4400+ Stock: 2.21ghz (201x11) @1.35v OC: 2.65ghz (241x11) @1.40v
RAM Corsair XMS 3200C2PRO (2x1gb) Stock: 200mhz (200/200x200) @2.7v OC: 200mhz (166/200x241) @2.7v (cpuz reports 189mhz...?)
VIDEO eVGA 7900gt CO 256mb Stock: core-500mhz / memory-1500mhz (1.2v) OC: core-670mhz / memory-1800mhz (1.55v)
I've been leary of overdoing it as I'm still running it on the stock AMD cooler. Granted, it's a very beefy cooler, but it's fins are made of aluminum, and the fan probably doesn't push enough cfm for my OCing needs. A nice all copper aftermarket Zalman or Big Typhoon is going to be the next thing I put in this rig. afterwards, I hope to reach at least 2.8ghz, as I don't think that's asking too much of it. I guess I should be happy to get 2.65 on the stock one. :)
Ah very nice.
You probably know that I'm having issues getting my 3700+ above 2.6GHz.
Heat isn't my issue though, something else. I think it is a memory problem, I don't know enough about the topic.