TFC MONSTA testing complete

[Martinm210]

martin didnt test the san ace guys.

But if he had and put that sucker on a shroud....

Game Overs. San Ace wins @ all voltage...

also guys keep note, martin used probably only a push or pull config on the kaze ultra, 38mm fan... not 25mm fan... so if he did a push pull yate system, id probably do a LOT better on that thick rad.

Martin care to do a quick run with push / pull yates?

Yeah, I always used the UK3's and medium yates on all my previous testing, so that's why I used them so I'd have something to compare too. I'm also fan poor when it comes to more than one.

The only fans I have three of are:
Yate Loon D12SM12
Yate Loon D12SL12
Scythe UK3
Triebwerk TK-121s and 122s

IMHO, when it comes to radiator testing, it's not really as important what fans you use, as long as they are all the same when making comparisons. I chose the yates and UK3's a LONG time ago for my radiator testing because they were cheap and popular.

They are not my favorite fans though by any means. The UK3s are extremely powerful at 3000RPM, but so is any 38mm fan spinning that high. They are also obnoxiously loud though.

The key to fans and radiators is understanding the performance difference between very low RPM and High RPM. In this test, you can see that fans at 3000RPM have over 7X the performance as fans at 400RPM. The interesting thing about fan efficiency is that it goes up nearly exponentially with RPM. 3000RPM is not 3 time the performance of 1000 RPM, it's more like 10X, fans are just that way...much much more efficient at extremely high speeds.

I find it interesting to see that you would have to run 7 of these with 21 fans at 400 RPM to match just one with 3 fans at 3000RPM. That's not out of the ordinary though, most radiators are that way, but that's also why I prefer looking at heat dissipated instead of C/W. You may get the false impression that performance is good down low with c/w ratios. But it becomes fairly clear quickly how EXTREMELY dependant radiators are on fan power. This is not our typical 10-20% differences, this is many many X the difference. Fans are EVERYTHING when it comes to radiator performance.

This is the point I can't seem to get across to the sub 1000RPM folks. You take it in the shorts big time when you run RPMs down under 1000RPM. You may as well lean over and blow on it now and then...lol!

Anyhow sorry if I turned this into a fan comparison, that wasn't my intent. You can't compare fans using CFM per RPM without even considering noise or noise quality.

I'll work on the fan testing next..