Hi villious/all.
Actually studies I have read have shown that 3/8" tubing is pretty similar to 1/2" I/D tubing (it is only when you start using really small tubing that flow-rate/LPM drops off - below 1/4" I/D tubing as I remember). I understood that smaller diameter tubing/barbs can magnify the effect of restrictive blocks and rads. - especially when they are in series - right?? Someone please step in and correct me please!!
The main thing I have learnt to watch out for with watercooling (as a complete newbie):
radiators/blocks - if these are restrictive then you will kill the flowrate in your loop which is bad
pumps - I believe the head of a pump (how high it lift a column of water) is more important than the rated flowrate
You can play about in your bath tube pumping water through blocks/radiators to see this effect!!
As has already been stated the Thermaltake watercooling gear is at the budget end. The Thermochill PA series rads are acknowledged as the best rads. as they are the least restrictive to water flow. Unfortunately they use non-standard hole spacings...
I did months or research before putting together my first watercooled system... I did all the wattage calculation stuff and decided on a PA120.3 (3x120mm fan radiator) as a minimum. Even that is only rated at approx. 400Watts dissipation to achieve +10C maximum above ambient...
The system works fine (I am using it just now) but I have learnt a lot from all the mistakes I made and I am planning a bit of a refit in the near future!! (With 2 faster, dual-core processors of course
)
I think the Koolance Lian-Li kit cases are maybe the best way to start off in Watercooling if you don't want to be too ambitious and have lots of cash!! (Their waterblocks are rubbish I gather but the Koolance mod. to the Lian-Li case looks fairly elegant).
Always better to plan ahead and ask around first before laying the cash out!!
Bob