I'm building a new setup for my A64 3000+ and I'm still trying to nail down which pump to get. I've already decided on a 12v pump and I'm building the system more around quiet cooling than absolute performance. With that in mind I ran a few numbers to find out what the performance trade-offs were for each of 3 pumps. This is my first attempt at the exercise so let me know if you see anything blatently wrong.
Based on what I calculated no pump is a bad choice but I'm leaning towards the CSP-Mag for Price, quietness, and performance
Equipment list so far:
BIP III
Apogee
MCW60
Using the numbers I could find for the parts above, I did the analysis to see what my expected Water-Air temp delta would be for a: MCP350, MCP655 (#1-#5 setting), and CSP-Mag.
System resistance curve fit: PSI Drop = 0.3324x3 - 0.21x2 + 2.1156x - 0.704 where x is the flow rate in GPM. Number includes an additional 10% resistance for tubing
Rough estimate of 100W for the CPU and 50W for the GPU.
MCP350: 1.33 GPM, .037 C/W CPU, .039 C/W GPU, .032 C/W BIP III, 8W pump
CSP-MAG: 1.07 GPM, .039 C/W CPU, .040 C/W GPU, .034 C/W BIP III, 8W pump
MCP655 #5: 1.61 GPM, .036 C/W CPU, .038 C/W GPU, .031 C/W BIPIII, 15W pump
MCP655 #4: 1.41 GPM, .037 C/W CPU, .038 C/W GPU, .032 C/W BIPIII, 14W pump
MCP655 #3: 1.15 GPM, .039 C/W CPU, .039 C/W GPU, .033 C/W BIPIII, 6.5W pump
MCP655 #2: 0.89 GPM, .042 C/W CPU, .042 C/W GPU, .035 C/W BIPIII, 4W pump
MCP655 #1: 0.66 GPM, .046 C/W CPU, .046 C/W GPU, .036 C/W BIPIII, 2.5W pump
