Kuya said:
Very interesting, will the DDC Dual Pump attachment work with two modded MCP 350's, also will it really make a difference? A single modded MCP 350 already almost doubles the flow rate. Moreover, I hear rumors that increasing the flow rate won't make a difference at all in the temps, people often refer back to the race car track analogy:
Quote from
http://xoxide.com/water-cooling.html:
Will using dual pumps and increasing the flow rate even help?
The race track analogy, along with some of the information on that page, is flawed.
Tubing is easy...bigger is always better, but for most systems 3/8" is big enough. "Big enough" means that you won't see an improvement by going to 1/2" tubing. If you have a CPU block, NB block, and two GPU blocks then I would say stick with 1/2". Otherwise, 3/8” is good enough.
As for the racetrack analogy, it tries to demonstrate that water spends the same amount of time in any given component at slow or fast rates. Although that’s true, it’s meaningless. If it really did have meaning, then there would be no reason to use anything but the cheapest, weakest pump we could find. Obviously that’s not the case.
The time water spends in the block or rad is very important on a per lap basis. This is what the racetrack analogy misses. Flow rate determines how hot water gets when it flows through a waterblock. The cooler the water remains, the cooler the block will be. Because of this fact, it is the temperature fluctuations within one cycle that are all-important in determining how your loop behaves...not how much time water spends in a rad per hour. Faster flow = smaller fluctuations = cooler processor.
As for flow rate, more flow is better until you reach about 1 gallon per minute. At that point, more flow is technically better but the improvements are so small you can't measure them. Further, since more flow requires a more powerful pump and the work of pumping turns into heat, excess heat may negate any benefit from increased flow. For most simple systems (one CPU block and maybe a GPU block) the Laing DDC-1 is good enough (MCP350.) For a system with a Storm and two GPU blocks, a Laing DDC-2 is good enough (MCP355.) In my opinion those aftermarket tops are a waste of money.
But then again...it's your money...buy whatever makes you happy!