doesnt the fan come with a controller?
so you can control the speed of the fan and subsequently the noise

styloe: yeah, i know that before i bought the CM. haha...but i read somewhere this lovely ultra 120 also works with low cfm fans, albeit the results not so superb. I have other 2 vantec with 1800rpm (62CFM) but i think the noise is too loud. louder than what it stated 31dB i think (same with silverstone stated specs, anyone using silverstone 121 care to clarify?). haha...so far with my clock, the full 100% load temps wont go over 50�C. would stay around 40-45�C+. shouldn't it be ok?

i wonder what kind of result will i get if i use a higher CFM fan. hmm...sflex looks attrative with the fluid dynamic thingy. 60+CFM with only 28dB!!! sounds promising! but RM80...huhuhu...for a fan (maybe reduce 3-5�C?)  maybe next time...

btw, i am controlling the fan speed and monitoring the RPM through CM aerogate. 

My TR Ultra Ultra-120 Ex doesnt work really well with low pressure fans. Not much of an improvement comparing without fan.

I wouldn't recommend the Silverstone though, unless you wouldn't mind the sound.

My Ultra-120 Ex runs cool without fan mainly due to the intake of my Lian Li A05 blows cool air directly at it.

I have tested my noctua fan and the Lian Li fan with the Ex. No doubt the Lian Li fan produces more sound but it cools the heatsink better. If i were to place my hand in front my Noctua's intake when its attached to the heatsink, i can feel strong airflow there. While the air coming out tru the heatsink is minimal.

So the Noctua isn't actually good to be used with the hsf, more better as a case fan where restriction is less.

The silverstone pushes a whole lot of air but the noise produced is kind of a turn down.

It's hard to obtain the S-Flex. According to jy14 he could only get on with the bulk with a moq of 10 and a moq of 5 for his 1st bulk.

@-vip3rleon9-
usually those HSF not worth buying. best budget cooler produced by Artic

lol no Noctoa or any of them direct heat pipe coolers worth mentioning?

was thinking of getting a Freezer7 Pro but was just wondering if there were any other good HSF's out there..

i have trust and faith in AC.. my 2.1ghz (from 1.8ghz) A64 3000+ has idle temperatures of 32C!

Noctuas and Xigmatek's HDT are good but certainly not in the same price range like a AC Freezer Pro.

hmm.. k then i think i'll stick back to mah Arctic Freezah.. now i just wonder how i'm gonna change the fan to a more powerful one..

It's not too quiet based on review.... so u would have to get a quiet fan to replace it .....  that would add additional cost ....

true...additional fan to replace xigmatek heatsink would cost little more $$....so, that beats the purpose of budget heatsink already. i cant think of any good budget heatsink other than AC Freezer.

Maybe get a hold of a cheapo fan speed controller as if i remember correctly the Xigmatek's fan run at very high speed.

Or how about running with stock heatsink since you don't OC highly and wait for reviews on the Xigmatek. Who knows it might actually beat the AC in terms of performance at a lower speed.

Only my 2 cents worth though, cheers  .