I'd like to see "1x A12x15 + A12x25 (both push)" and "3x A12x15" added to the comparison. I think the conventional wisdom is that push works better than pull and I know Navic's build went with the former. It'd be nice to see the full picture.Spent a few hours testing my current build. Summary of my setup:
Here are the results:
- Mounted all 3 fans, then (1) disconnect the push-pull fan to simulate 2 slim fans, or (2) disconnect the slim fan PSU side to simulate 1 full + 1slim fan setup
- All fans are exhausting air out of the top, all panels are fully closed
- Results are taken from Cinebench R23 10 min Throttling test, then let the system cooldown between 10-15min for coolant temp to reset (39C)
- For reference my ambient is 28-29C, the Scythe Slipstream fan used is the 2000RPM version, the radiator is Bitspower Leviathan SF240 and A12x15s were shaved off 2mm to fit the case without bulge
Push-pull Coolant temp CPU (Tctl/Tdie) CPU PPT Pump Fans MB side PSU side Over PSU (T_sensor C) (Max C) (Max W) (Max RPM) (Max RPM) A12x13 A12x13 A12x25 44.0 83.0 148.3 2824 1573 Slipstream Slipstream A12x25 44.0 83.3 148.5 2800 1700 A12x13 A12x25 45.0 83.8 148.9 2947 1670 Slipstream A12x25 45.0 84.1 148.9 2934 1804 A12x13 A12x13 46.0 85.3 149.7 3221 1660 Slipstream A12x13 47.0 85.5 150.1 3229 1656 Slipstream Slipstream 48.0 86.3 150.4 3333 1783
Observation:
Conclusion:
- Obvious #1: more fans and bigger fans is better 1 full + 2 slim > 1 full + 1 slim > 2 slim
- Obvious #2: the Scythe fan is no match for the king of slim fan A12x15. each fan loses by 1C in terms of coolant temp
- Not so obvious: the A12x25 is so powerful that it normalises and cancels out any differences between the slim fans - both in 3 fans and 1 full + 1 slim config
@Wahaha360 this is a long way in saying I really want you to make that ultimate SFF rad happen - 17mm core, high FPI & multi-ports
- For best temp, always go 3 fans and the bigger the fan the better - did not have a 3rd A12x15 or a 3rd Slipstream but don't think they will ever be able to match the A12x25
- For balanced temp and convenient, go 1 full + 1 slim fan if you can make sure the slim fan clears the edge of the motherboard
- For slim fans, always go Noctua A12x15 so just stick to 27mm or slimmer rad