Core i7 920 & TRUE 120 Extreme 1366 - advice needed on supplied fan

Looking at getting the TRUE 120 Extreme. Looks like Thermalright is selling a 1366 model only with a Thermalright FDB 1600 rpm fan (with Fluid Dynamic Bearings). I've seen some good review on this fan as for being really quiet

http://www.crazypc.com/products/ultra-120-1366-50985.html

I've had people suggest the V8 (huge) or Titan Fenrir (where to find and what cost?), but there seem to be a lot of others at the same time who swear by the TRUE.

Either way, most likely will go with the TRUE. If I add another similar fan for a push/pull configuration, should I get a similar 1600 rpm one, or should I get the 2000 rpm one (same cost)? In that case, which one would be used for pull versus push? Is there a benefit of hiving a greater RPM fan for push or for pull?

Here is a link to these FDB fans by Thermalright:
http://www.frozencpu.com/search.html?mv_profile=keyword_search&mv_session_id=cMPcoKVT&searchspec=thermalright+fdb&go.x=15&go.y=20

I've read many reviews about other brands of fans, but would like to know if anybody has tried these Thermalright ones and get some opinions on these as well.

Thanks JohnnyLucky! That's great info. I was not sure if having more pull or more push would provide any advantage, but if turbulence would be an issue, I can just get another (identical) 1600 RPM one. These FDB fans pretty much have the same specs compared to the Scythe S-Flex you are using, regarding airflow and noise. I was just not sure if 63.7 CFM was enough.

Since you have the original 120, did you do any lapping? I've heard many recommend this while others say the few degrees difference is not worth the time. Just curious.

For others reading this thread, anybody out there bought the TRUE 120 for the 1366 socket with the included fan. What's your opinion related to noise, temps,...?

I'm using the Thermalight Ultra 120 Extreme RT1366 with stock fans. I lapped both the cpu & heatsink. The thermal paste I used was Artic Silver 5, I am now running my i7 920 at 4.0 ghz and the highest temp my PC seen at max load was 71c. Idle I'm running at 33c-36c.

nickhoff - How does your idle temp compare with the ambient room temperature? Also, is there a difference between Summer and Winter temps?

nickhoff: how did you measure the 'load' temps ? Very curious as I have the exact same setup (cpu/hsf/fans).

1x Prime95 I get 69 celcius
8x Orthos I get 88 celcius

TRUE 120 is lapped but not the CPU, using whatever thermal paste shipped with the TRUE 120.

I have another thread regarding load temps : http://www.tomshardware.com/forum/ [...] s#t1815078