My teenage sons elderly gaming PC has an ASUS M2N32-SLI Deluxe motherboard recently upgraded with a new AMD Phenom 640 Quad core 3.0GHz processor, so we thought this Artic Freezer 7 Pro cooler should be ideal for overclocking the chip around 10%, as the fitted stock AMD heatsink cooler is a bit of a runt. Fitting the Artic 7 is a rather overcomplicated compared to the stock AMD 2/2+ socket cooler which had a quick flip over latch, you have to mess about with a couple of bolts and fixing plates that have four holes on them (2 each side), so the plates could bolt on any of these to correctly latch on the processor mount. I removed the fan which just clips on via a couple of lugs, to make fitting easier. Having the heatsink compound already applied is a bit of a pain as it's tricky to handle the bulky heatsink without rubbing it (I'd get a small tube of heatsink compound in case you rub off the preapplied stuff - I always have a tube about). All this isn't a problem though, and the Artic Cooler 7 looked ideal for the job. Sadly it was not to be, the base of the main heatsink was simply too low for our motherboard, as the copper heatsink pipes on the motherboards north/south bridge chips are really large on the ASUS M2N32-SLI and they prevent the cooler getting anywhere near the surface of the CPU, so this Artic 7 cooler can't be fitted. We had to refit the small stock heatsink/cooler and stick with that.I almost gave up but then decided on trying the Zalman CNPS7X LED CPU Cooler with Heatsink and Fan. This cooler is perhaps even larger than the Artic 7, but crucially the wider heatsink/cooling fan is at right angles to the orientation on this Artic 7. As the overhang more sensibly goes in the direction of the two AMD fixing lugs, the Zalman CNPS7X proved an absolute doddle to fit, with the AMD locating lugs already fitted to the heatsink (although the heatsink only fitted one way round, fan at the bottom pointing at the graphics card). Usefully it was very easy to remove the Zalman heatsink from the unsealed cardboard presentation box and try it against the motherboard - if it hadn't have fitted I could have sent it back as unused for a refund. The Artic 7 was sealed into a plastic blister pack, so once extracted it couldn't be returned to Amazon. If you have a suitable AMD motherboard I would strongly suggest you try the slightly more expensive Zalman CNPS7X over this Artic 7 cooler. Once fitted the Zalman keeps our 10% overclocked Phenom 640 3.0GHz processor at a cool 28oC (free app 'CPU Thermometer' v1.2) before and after running 3DMark11 (scoring 3,228 with the AMD processor running at 3.3GHz, not bad for a 5 year old motherboard). I used Arctic Cooling MX-4 Thermal Compound and Arctic Silver ArctiClean Thermal compound Remover and Surface Cleaner with the Zalman CNPS7X as the Artic thermal paste was twice as efficient at heat transfer than the Zalman supplied thermal compound.On-line reviews suggest this Artic Freezer 7 isn't the greatest at CPU cooling, but it's slightly better than the stock heatsink and does allow moderate overclocking (although a few other reviews here even dispute this). So although this Artic 7 is probably a decent budget cooler there are better about, e.g. the Zalman CNPS7X Cooler. Shame the manufacturers don't list compatible motherboards, which would make selection easier. Unlike this Artic 7 and the Zalman CNPS7X we eventually used, some heavier coolers like the Zalman CNPS9900A require the motherboard to be removed to fit a backplate. So 3.5* as the Artic Freezer 7 cooler was fine in itself and actually less bulky than some, but our motherboards design wasn't suitable, the Zalman almost certainly works better and was easier to fit, plus the Artic 7 blister pack packaging meant we couldn't return it unused for a refund.