Wow, only took 10 days but the H70 finally came in.
If any Canadian users out there are interested, the H70 is on sale at Memory Express for $79.99:
I installed the H70 in the top of the Corsair 600T case. I have it pushing air into the case, and two case fans behind it pulling air out.
I connected the Scythe PWM fans I ordered to the CPU header using the Y cable I made. This works great, and on my CPU/Board, even under load, it never ramps up the fans. Under full load the temp has not hit 50c yet. Previously using the Intel stock cooler my hottest core was hitting 71c. The motherboard is keeping the fans running at about 660RPM. Anything lower than 600 gives me a CPU fan error in BIOS.
Needless to say the thing is almost completely silent. I had to hack the fan mounting holes in the top of my case to get the cooler to clear my DIMMs, and I had to remove a rib from under the top grill/cover to allow it to fit over the slightly off-centre fan.
The bad news is, two of my core temp sensors have bit the dust. One of them on what was my hottest core (the one that was running at 71c under load). It's stuck at 45c now, and one more just hovers between 41c and 43c. The other two cores are in the low 30s at idle and mid 40s under load.
How's that expression go? If it ain't broke....don't fix it. That and Murphy's Law seem to have bit me in the rear. Oh well, I'm really getting the case ready for an eventual upgrade to an i7 system, so no big deal right?
Note, the top rear fan orientation has been changed to exhaust. Any warm air blown into the case should be removed by the two rear fans which are the stock fans that came with the H70. So, if I like I can really crank them with my fan controller.