They don't sadly (well apparently but I wouldn't chance £120 on it).
It would be overkill anyways dude. They can't be overclocked very hard.. I can't remember why now but it's something to do with how it chains together.
Why doesn't it OC hard? I have seen guys running 4.9 GHZ+ on it without any hassles. All I need is 4.4 stable 24/7, not 6Ghz.
I don't really like big tower aircoolers. I think they are too big to give a clean build, somehow I am really taken aback by the charm of radiators
.
If I buy a system I do a simple calculation first to see if it is worth it's money.
I check up the Multicore CPU benchmark test on
http://www.cbscores.com (or I check youtubes) and I see what score a system can do OC'ed to a 24/7 stable operation.
For the i7 970 this is 11.3 CBpoints.
I then build my system up to spec and see how much it costs in total.
I then divide the price by the renderpower, this gives me a price per CBP value.
This is really fun to do on some crappy HP/Dell or even Apple workstations.
For instance, an 27 inch iMac with core i7 processor will score 5.04 Cinebench points. This system with 16GB of ram will cost me 3.000 euros.
3.000 euros divided by 5 Renderpoints = 600 euro/CBP
Now a 950 system will do 7 CBP. Fully outfitted with nice PSU and 12GB of RAM this machine sets me back around 1400 euros.
1400 euros divided by 7 Renderpoints = 200 euro/CBP
Meaning a standard 950 system OC'ed to 3.8 Ghz is 3 times cheaper than an iMac.
Now do the same for a 970 system and you'll see it is actually the cheapest system:
1800 euros divided by 11 Renderpoints = 160 euro/CBP
This is how I figured out I should immediately stop buying macs and invest in 970's if I wanted renderpower.
Now if we do the same calculation for a SR-2 system we'll see it is actually good value:
3500 euros divided by 22 Renderpoints = 159 euro/CBP
This means that it doesn't matter for me if I spend it on 970 systems or a dual x5650 SR2 setup, both will give me the same value in Renderpower
.