Radiator Fans

mod1fied · 11 Jan 2010 at 22:43

I bought 3 Akasa Apache fans rated at 1300RPM for my rad but ive noticed they only really spin at about 1000RPM. Is this normal?

Second question would be, If I were to let these Apache's go, what could I replace them with? I was looking at the Xigmatek XLF-F1253 (Black frame, Orange blade, White led) are these any good?

Its either those or something a bit more powerful as I do have a fan controller around somewhere - The Zalman MFC1 or whatever the number is.

pre · 11 Jan 2010 at 23:49

Of the commonly available fans I believe Scythe Gentle Typhoons - and to an extend Scythe S-Flex are highly rated (in so far as 25mm) fans go due to their consistent noise/performance ratios and their relatively high static pressure (more important than raw CFM pushed as they are effectively pushing though the resistance of your radiators fins rather than just air).

Phunky Phish · 12 Jan 2010 at 17:22

I agree with Pre that the Gentle Tyhoons are the best fans for Thermochill Rads, and most of the other deep rads with large fin spacing. But what rad are you using?

Have you connected the Apache's to a PWM header? Or just a 3 pin header on the mobo? Have you got your Bios coontrolling the fan speed?

I have 5 of these on 1 PWM header via 2 Akasa PWM splitter leads. I have a Thermochill PA120.3 rad and to be honest, they NEVER spin up even with my quad always running at 4Ghz!

Lastely where are you getting the RPM from to see they are only 'really' spinning to 1000RPM?

mod1fied · 12 Jan 2010 at 18:41

The rad is an XSPC RX360 "Designed for low speed fans" or whatever it is they say.

Apache's are connected to a 3 pin to molex wire, with the sensor wire that plugs in the mobo. Also using speedfan to get the fan speed.

Perhaps im worrying too much about them?

Phunky Phish · 13 Jan 2010 at 15:24

I would say dont worry mate. Using a nice big rad like that I would be surprised if they ever ran up to the fun 1300RPM. Your not really pushing the CPU at 3Ghz. Now if you was overheating the cpu and only running up to 1000RPM, then you have some problems!

mod1fied · 13 Jan 2010 at 18:52

Shame my CPU is not stable at 3GHz no matter how high the push the voltage, IBT causes a crash on its first run and Prime95 hardly gets going too. Ive currently got it stable at 2.9GHz @ 1.376v Ive played around with the FSB instead of the multiplier but it just makes it even more unstable.

Dropping all speeds back the motherboard can take an FSB of 280mhz and the CPU can take 16x multi. I just can't get the damn thing stable at 3.0

I may just get a fancy hex core when they come out or splash out now on a 965.

Oh and the reason for a big rag on just a CPU was because I was going to get hold of a GTX280 waterblock but the guy who had the block sold it before I had a chance. - Waiting on decent prices so I can get a new card and block at the same time