I overclocked a 3GHz P4 to about 3.87GHz, 258 - 1032MHz FSB, 1.63V or so, and it beat a stock Athlon64 Newcastle 3500, but by only about 12 points in the Sandra CPU arithmetic test. We both got 12K-something. I did an unstable overclock to 4.11GHz, but it'* retired from overclocking and now runs stock with a good cooler on it.
I took two sticks of DDR266 memory, one CL2 and the other CL2.5, and ran them in dual channel, DDR400 2.5-3-3-7 at 3.1V. Then I tried 440MHz, and though it worked, it locked up shortly after because I didn't increase the latencies.
I ran a GeForce4 MX440 64MB video card at 1.65V AGP voltage and overclocked from 250/400 to 400/580. It'* weird that the voltage regulators let this happen.
A 2.53GHz Celeron D, for some reason, was overclocked to 3.8GHz 800MHz FSB only a few seconds after being installed. I'm sure it could have gone higher. Anyone try this one?
Some time ago, I had a GeForce FX5200 128MB, 128-bit ram, that I took from 250/400 to 316/460; stock voltage.
AthlonXP 2000, Palomino, 1.67GHz, 266MHz FSB, to 1.85GHz, 1.85V, 296MHz FSB. The Palomino core was a terrible overclocker.
Athlon64 3000, Venice, 1.8GHz to 2.493GHz, 1.55V.
Those are from a long, long time ago. Recently, I took a Core 2 Duo 6600 from 2.4GHz to about 3.8, and it stayed stable with water cooling. :p
I haven't overclocked my 8800GTS (Christmas present -really) yet because it runs about 60-70 C at idle even at stock clocks. Where can I find a good cooler for this behemoth?
So, all of this hardware is still running. Especially interesting is the MX440 video card. That was a massive overclock with stock cooling!
What are your records? Depends on the people we have on this forum, I may not have gone as far as most record holders on the net.