Anyone else using water cooling?

[doomtoo]

I've had water cooling for several years now, but only researched enough into it to build it, and to find out what parts had the best/better efficiency. Problem is, my core will sit at near ambient temperatures at idle,- but when processing it will shoot up about 20 degrees in a matter of milliseconds. The block is smooth, the pump is pumping a lot of liquid through, and I have a triple radiator. Anyway I can isolate the problem and try and improve it? I found with the core 2 duo, I get about the same temperatures as the stock fan!(just completely silent).

I've overclocked for years, but I don't know a good way of bringing the temperature at the core down under immediate load- the water temperature doesn't rise to any detectable level when the cpu supposably shoots up 20C. 

1/2" tubing, great pump, swiftech and other blocks.

[fireworking]

You are lucky:

Me:
1.05 ghz processor with 512 mb of ram.

Get this:
Geforce MX/400

[doomtoo]

Wow!

Mine I've slowly built, but I got my first decent computer when I got $100 from my aunt for my 16th b-day, and was able to ebay a 266mhz celeron, built in everything and 245mb ram I had an old HD and cd rom drive, but at least I could play choppy wuake3!

Before that, my dad would get decent computers for the time, and I would get them when he upgraded- 8086, 8088,286 Tandy (orange), 386, 486DX(33mhz, was able to overclock it to 40mhz!)

I would upgrade your video card first in general, but you don't have PCI express on your board. Buy:
$20 cheap case /w PSU
$50 cheap motherboard with built in everything +pci express
$40 core 2 duo
$20 stick of ram

and move over the HD/cd rom. Later, upgrade the video card, ram, CPU and HD(if needed) will get you a decent computer.

I never buy the top of the line video card, unless it is a generation old, and the new ones don't offer any new features aside from speed.