I was looking at this cooler over at <A HREF="http://www.hardocp.com/article.html?art=MzE3" target="_new">Hard|OCP</A>. In there comparison the Thermalright is #1, the Swiftech is #2, and the Alpha comes in #3.
I think that that looks to be an okay cooler design. I would like to point out that the Swiftech is equiped with the Delta FFB0812SHE-F00 which is a dual blade designed, 48.5dBA, 170 gram, 68.51 CFM, 80mm^2 x 38.5mm fan. The Thermalright is using the biggest in that series of fans. It uses the FFB0812EHE-F00 which is also 170 grams, but is a 52.5 dBA and 80.16 CFM fan. (See both of those <A HREF="http://www.deltaww.com/products/dcfans/pdf/FFB808038.pdf" target="_new">Delta's here</A>.) In comparison, the Alpha 8045 used in the comparison is using the Delta AFB0812SH-F00, which is 80 grams, 80mm^2 x 25.4mm, 40 dBA, and 46.62 CFM. (See the <A HREF="http://www.deltaww.com/products/dcfans/pdf/AFB8080254.pdf" target="_new">Delta AFB0812SH-F00's stats here</A>.)
So for comparitive purposes I will look at all of the reviews listed on <A HREF="http://thermalright.com/slk800.html" target="_new">ThermalRight's Product page</A>. I will not comment on the German one because I do not speak German.
Looking at the DansData.Com review, look at what they said.
"<A HREF="http://www.dansdata.com/coolercomp_p3.htm#slk800" target="_new">With the FFB0812EHE on it, the SLK-800 turned in a superlative 0.46°C/W result. That blasts this cooler into the lead for the whole Socket A/370 air cooler category, by a significant margin.
You'd blooming well want it to be something special, though; this is a loud fan, and most people will not tolerate it.
With a much less irritating but still quite powerful 4.3 watt 80mm Sunon fan on it (a KD1208PTBX-6A, with a 50.6 cubic feet per minute free-air flow rating), the SLK-800 managed 0.50°C/W. That's a very good figure, too, and it means that this heat sink should still qualify as a quite serious overclockers' cooler even if you put a super-low-noise thermally controlled 80mm fan on it.</A>"
As most people know, 0.50C/W or even that "wonderful" result of 0.46C/W is not that good. The Alpha 8045 with the <A HREF="http://www.micforg.co.jp/c_pal8045e_other_fan.html" target="_new">Sanyo Denki 109R0812H402 is at 0.32-0.36C/W</A>. The Sanyo fan is 80mm^2 x 25mm, 29 dBA, and 36.4 CFM fan. (<A HREF="http://sanyodb.colle.co.jp/coolingpdf/LinkedPages/petit.pdf" target="_new">See the stats on Page 2 here</A>.)
So you can clearly see that this is the same as the Hard|OCP review. If they used the even bigger SHE or EHE dual bladed fans they would get better comparitative results.
As for the SystemCooling.Com review.
"<A HREF="http://www.systemcooling.com/modules.php?name=News&file=article&sid=71" target="_new">The physical dimensions of the SLK-800 are; 87 (L) x 56.4 (W) x 48 (H) mm without a fan installed at the top the base measurements are 25 (L) x 56.4 (W) mm. The heatsink weighs in at 505 grams also without the fan. The design of the SLK-800 looks like it will fit the majority of known Socket 370/462 motherboards and I had no problems what so ever installing it. You will need a flathead screwdriver for installation.</A>"
505 grams without the fan!!! Ouch! The Swiftech weighs 560 grams but that is secured to the motherboard using screws and not a clip like the Thermalright SLK-800. That is a lot of weight for a clip. It is a three hole clip so at least it has that going for it. However add a huge fan and the weight is now 675 grams. That is a lot of weight for a clip. I would much rather use a screw attachment method for that kind of wieght.
So I hope that you see that both the Swiftech and this ThermalRight are really heavy and really loud. You can get similar results with the Alpha using a lower CFM fan. The Alpha is just a better C/W design.
Back to you...
<b>"Sometimes you can't hear me because I'm talking in parenthesis" - Steven Wright</b> :lol: