The 120mm fan question (dual-fan)

[CMetaphor]

can ya tell I've been out of the game for a while? haha.

So, recent bought Bulldozer. Seems to be stable at 4.5Ghz, all cores, under my Zalman flex with AC5 and two 120mm fans.

The problem? Far warmer than I'd like. With two Coolermaster R4s im hitting low 70s using Prime95 "max heat" bench.

I have some alternate fans available:
-Gentle typhoon AP-14s
-Gentle typhone AP-30s
-Scythe S-Flex 21s (not sure which model exactly, think its the 2100 rpm one)
-Coolermaster Excalibur

Which would you choose for a dual-fan setup? Im not planning on OCing much higher. Noise isnt a Huge factor, but id rather not have it screaming.

Note: I checked and it seems my AP-30s have the 4th solder pad available to convert them into PWM controlled. Perhaps the best bet?

[Adzsask]

The only above mentioned fan that would push more air then the R4's is the S-flex 2100RPM's, and I see it only lowering temps 2 C, I would re tim the CPU first before buying more fans, the R4's push quite a bit of air already.

[ilya]

You aren't going to see much better performance with a Zalman Flex, no matter what high performance insane RPM fans you use. The cooler's design/fin density simply can't take advantage of it. Most Zalmans are designed for low static pressure quiet operation.