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3 passes is way too many, way too much flow restriction unless you have a huge pump, 2 passes mite not be a good idea, unless your blocks are really restrictive, im gonna run 2 passes soon because my block is so restrictive(60gph) that its putting stress on the pump.... so im gonna run my nb or gpu block as 1/4tubing and 3/8 to cpu...
__________________ AGOIA 1600+@anywere between 1.4-1.9 EP-8k3a watercooled |
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3 passes actually has less resistance than one or two, so the pump wont be having to work as hard and flow will increase, yes it will probably be slower through each pass, but with a beefy pump that doesnt really matter
__________________ Dual XP1600+ AGOIA "Y" @ 1875mhz WATERCOOLED 33C LOAD Undergoing overhaul. Hard Locking to 13.5X multiplier for theoretical clockrate of 1944mhz 144mhz FSB 1X Duron 1.3 AHCLA "9" @ 1430mhz 1X Celeron 1000mhz 1X Pentium3 450 DECEASED Folding Under AOA-UK for team 45! ![]() "Mothers should love their babies, because then they grow up, everyone might hate them." |
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If you're worried about dropping the flow velocity too much, just reduce the pipe diameter. Computer people use too much pipe anyway ![]() If you're going for any sort of multi-pass system, you'll need some sort of flow control (pin or gate valve) on each pass inlet, otherwise you'll find all the water rushing through the pass of least resistance. Be annoying if that happens to be the Northbridge, leaving you with a toasty CPU. 3 passes will have less resistance than 2, because you've only got one major item on each pass, rather than 2 or 3. You'll get some pressure drop due to the valves, and some due to the manifolds, waterblocks and bends in the pipe - the pressure loss due to these should be equalled or exceeded by your pump's outlet head pressure. Look here to find out how to calculate this... Bends
__________________ It is by coffee alone I set my mind in motion... |
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