Ice Tea said:
But not cooling the Northbridge and The Graphics card would make the Reserator abit pointless as you would need good airflow and case fans to cool a passive
NB and GPU like the thermalrights HR-03 and the HR-05 ?
Yes. But that wasn't the question you asked. At one point I had 3 Reserators running three loops on my system - one for the CPU, one for the SLI graphics and one for the N/B, S/B and HDD.
If you want a totally passive overclocked system then you'll need to look at something more complex. I built a Quad Xeon 3210 system with three Preytek Serenity coolers (buy a Laing 18W DDC pump with the PetrasTech top, a dozen 1/2" barbs, 5m of Masterkleer 7/16ths tubing, 3 Preytek Serenity Coolers (they are available for about £60 each without the rest of the kit) and CPU, GPU and chipset blocks of your choice and pipe them up so that the CPU comes off the pump, then goes to cooler No. 1 then back to the GPU(s), then Cooler 2 then the Chipset and Cooler 3 and finally back to the pump. It runs VERY cool and the guy who I sold it to is absolutely delighted with it. It was totally silent except when the optical drives spun up.
I did also have a custom-made Lian Li V600B with CapeCora Passive rads mounted outside, it had 3 pumps and 3 loops and it cooled spectacularly well, but it looked like an abortion.
If you want the king of passive cooling, then you need the Innovatek HTCS Passive Stand Alone Radiator - it's rated to cool an overclocked quad and SLi graphics. It's massive though. It's sort of a properly engineered Zalman Reserator without the pump.
Do bear in mind that the P35 motherboards run very cool anyway so you may not need to cool the chipset and the current NVidia graphics coolers are near as darn-it silent anyway.