SLK-947U silent fan recommendation please.

[Lazgoat]

I'm about to get an SLK-947U and need advice on a good performance fan. By performance I mean one thats silent/fairly quiet but pushes alot of air. I was considering a 92mm Vantec Stealth which pushes 28CFM @20dBA. Your recommendations are most welcome.
Laz.

[SteveI]

28CFM is not enough.. The best solution is a fan with variable control. This way you can take your time and play with the setting until you find balance noise/performance. The TT SmartFan2 is excellent, with 75cfm(5000rpm) at the high end. It is an 8cm fan tho. Another good choice might be an Enermax 9cm fan w/ manual control. Not as much flexibility(high end is 2500rpm), but it is 9cm.

[Veky]

I suggest Papst 92mm, pushes around 60 cfm at 23db. Got one on the side of my case, good fan.

[Lazgoat]

Originally Posted by SteveI

28CFM is not enough.. The best solution is a fan with variable control. This way you can take your time and play with the setting until you find balance noise/performance. The TT SmartFan2 is excellent, with 75cfm(5000rpm) at the high end. It is an 8cm fan tho. Another good choice might be an Enermax 9cm fan w/ manual control. Not as much flexibility(high end is 2500rpm), but it is 9cm.

28cfm isn't enough? Then I guess my Coolermaster Silent Heatpipe with a whoooopping 14CFM is doing a good job with my XP1700 @ 2Ghz I gets might hot though as soon as I increase the Vcore, hence I keep everything at stock.

Ok, how about a YS-Tech FD9325 92mm fan. 50 CFM @32 dBA, no speed control though. Or a Zalman ZMF2 with speed controller, but I cant find any CFM ratings anywhere.

Laz.

[SteveI]

Originally Posted by Lazgoat

28cfm isn't enough? Then I guess my Coolermaster Silent Heatpipe with a whoooopping 14CFM is doing a good job with my XP1700 @ 2Ghz I gets might hot though as soon as I increase the Vcore, hence I keep everything at stock.
Laz.

On your Silent heatpipe, you are probably using a 6cm fan, which concentrates down to the hs... on the Thermalrights, larger fans will have a lot of space where the air pushed down will actually miss the HS and blow straight down to the mobo... out of the 28cfm, maybe a 3rd will miss the target, but provide a lesser cooling benefit as secondary airflow. 40-50cfm should be enough. Again, I personally prefer flexibility as an option, simply because when I build, I'm not sure how hard I'm going to push. If you are fairly confident on how much cooling you will need, and how much noise you can tolerate, there's no reason ...

[Lazgoat]

Ok just ordered an SLK-900U (it was £10 cheaper than the 947) and a Panaflo 92mm fan that pushes 48CFM @27dBA.
I may attach the fan to my case fan controller if its too noisy at full pelt.
Now I'll be able to turn up the juice and see what this XP1700+ will do I'd like to get 2.3+ Ghz

Laz.

[Staz]

Pabpst fans are very high quality and also quiet. But they charge for it to. If I were looking for silent cooling I would definately check them out.

[Lazgoat]

Staz, I considered a 92mm Papst but it was double the price of the Panaflo and the performance figures for both were very similar.

Laz.

[Lazgoat]

Just a quick update, the SLK-900U arrived yesterday and luckily a 92 mm Papst fan as well! They must have run out of Panaflo's lucky me!
Temperatures are down by about 8-10C but I will have to let the TIM cure for a few days to be sure.
I have not noticed any increase in noise either, which is nice!

Laz.