Mine are in the 20s. I do not believe the on-chip thermal sensors in this range because I believe that the Gulftown sensors are not very well calibrated are can be all over the place when not in the 50-100C range. I have sensors going like this at idle:
23, 10, 28, 22, 28, 20.
 
What I believe is that my CPU is actually at room temperature or only slightly above at idle. ~25C 

Yeah how would you believe a core at 10C when the water in the waterblock is at 25C and room temp is at 24C??? Plus the core right next to it is at 28C? come on...

I'm really glad I found this thread as I was about to hop on a H70 for my box this week.
 
This thread has slightly changed my mind, although I'm not sure if my Microcenter has this Kuhler 920, I'll have to order off Newegg if its in stock.
Edit: Just checked Newegg and its not even showing as being in their inventory.

Amazon has it too: http://www.amazon.com/Ant...=1304409896&sr=8-1
 
They have the name wrong though... Mainstream CPU Liquid Cooling... lol

Only thing about the free shipping is Antec uses UPS. For me that was 5 (7 days with the sat & sun) business days to go from CA to FL. Yet I thought it said USPS Priority during check out.
 
The 920 is great, much better than the h70 (had a friend who tried both for a while). Both are loud with the stock fans on high. I put 2 CM Excaliburs on the Antec and it does a much better job than the stocks at all speeds.  Also helps to put it in a P193. The install process/hardware  for the Antec 920 is horrible compared to many others out. I really liked the Noctua SecuFirm2 Multi-socket Mounting System. 

rafale

I agree about the mounting. It's really the only thing I do not like so much about this unit. With the Indigo Extreme, the installation was how do you say... Acrobatic.

 
Hell I think any ALC systems for me were "acrobatic" to install. H50 and 620 installations gave me a good workout

The mounting is not bad and pretty easy. It is just that if you want to use some other exotic TIM like I did, you do not want to do a push down and rotate. With the stock TIM it is fine.
 
I think you can get a pretty good idea from my post 65 how it compares to the top end air coolers. Under the same conditions and high speed fans the high end air coolers (Super mega, Noctua DH14, Silver Arrow etc) tend to be within 2 degree of one another. I think the 920 will have identical or better results with fewer fans and will not heat the air inside your case like an air cooler does. It's biggest advantage is to move the heat to the radiator which offers you the flexibility to mount it to your convenience inside the case. When you take a Silver Arrow for example, to get similar results, you will need three fan on the cooler plus a fan on the case exhaust. With the 920 I only need two fans in push pull and I am sure all the hot air from the CPU is exhausted out of the case and not recycled in it. Plus it fits my motherboard with any memory I want!

PWM fans only have one advantage: When they throttle they do not rely on a resistor from the fan controller therefore not generating as much heat at the fan controller as a regular fan.
Not sure I am making myself clear. Let me try again: A normal fan connected to a normal fan controller, when you want to reduce the voltage on the fan, the fan controller is nothing but just an inline variable resistor. The resistor will heat. That's why you often see heatsinks on fan controllers.
A PWM fan is controlled differently, It has a motor which can accept pulse modulations. Meaning the voltage will pulse up and down at a frequency which will average over time to the voltage you want. The controller in this case is not a resistor but a circuit with a pulse generator which will not generate as much heat.
 
It does not impact the performance of the fan itself.
San Ace are great fans. A little on the loud side at full speed  but great quality.
You can check my mod rig. My case also is taking a 140mm fan as an exhaust so I used a Thermalright TY140 which is virtually silent. It has 120mm mounting whole. I used an adapter from a Noctua fan to make it fit the 140mm hole pattern. I know it is a bit McGyver style... You might not need to do this with the HAF. The TY140 is PWM too so I connected it to the Antec 920 unit. For the push fan if you don't mind the noise of a high speed SAN ACE, go for it! I personally think that the Gentle Typhoon generate more pressure at a lower noise but every one's ear is different.

riddleofsteel

Thank you. Which Gentle Typhoon would be the best choice? And do I still need a fan controller if I don't go with the San Ace?

 
Best choice is up to you! Do you prefer loud fans but awesome performance, or silent fans and not so great performance? I think the AP-29s are the best choice for a balanced performance to noise ratio. AP-15s are a good choice too, they are quiet and put out a good amount of static pressure and CFMs, they are in stock now too! http://www.frozencpu.com/...M_D1225C12B5AP-15.html
 
Fan controller is totally up to you as well. If you get something like AP-31s I'd go with a fan controller if I were you... I can only imagine how loud they would be at full speed
 
I'm perfectly fine with my two AP-29s without a fan controller... but that's just me. I'm half deaf from loud music LOL

riddleofsteel

I am sorry to bring this back up, but I am noticing that when I go to put my radiator in the rear exhaust position with the two fans in push pull, my motherboard presents a problem. The cpu power cable is right in the spot where my rad and fans want to fill up. Is it bad to bend that cable? Because that's what is probably going to be needed. This is the same problem that prevented me from using two heatsink fans on my air cooler, I wish I had thought of that first. The motherboard is an MSI Big Bang Xpower. Thank you.

You should be ok. Many motherboards have the 8-pin CPU power connector in that area.

What case do you have right now? I wish there weren't so many variables to keep track of.
 
EDIT: Never mind, I see your sig.

Hey,
Judging from your pictures, you used only the metal ring and not the mount piece?
Is that correct?
I'm having big problems setting mine up...it just doesn't fit on the mobo!
Not only that, if I look at the manual, it mentions no mounting whatsoever to the mobo.
The only thing is the pushthroughscrew things which you can just pull out, there is no other other attachment to the mobo.
At least the original fan clicked into place.

Only with a full release.