Pros: Very efficient cooling! Stock HSF ran at 41C idle on C2D E4300. Now at 28C w/Scythe S-FLEX SFF21F 120mm Fan. Max load running TAT 47C. Awesome!

Cons: Do your homework on this...HSF is very heavy. Highly recommend extra support for top of HSF on vertically aligned MB's. I didn't kill my MB, but I think I just got lucky. I experienced MB flex failure after 2 weeks of unsupported HSF. I wired to the top of the case and no failures for 2+ days and counting. Keeping fingers crossed.

Overall Review: Cooling wise this is a great product worth every penny. From an engineering perspective it should have some additional support designed into it. The back plate works great, but PCB's just aren't designed to support this much weight on the end of a lever. It's simple physics.

Pros: Cools very well. Slapped an S-FLEX 1200 RPM on it and it's very quiet - much more than the stock Intel heatsink (C2D E6300) under load. Keeps the CPU at 50 degrees (Celsius) at 3.36 GHz under 100% TAT load (case temp 39 degrees). Assembly fairly straightforward, just take your time and think about what you're doing. You get to chose the fan you want (cooling capacity vs. noise).

Cons: Assembly manual (sheet) could be better. Had a weird problem at first. Would give me a blank screen a start-up, not even post. If I put back in the stock Intel heatsink it would work fine. Turns out the backplate was apparently shorting something on the motherboard (Gigabyte 965P-S3 rev. 1). I put a piece of anti-static bag (that came with a hard-drive), between the backplate and the mobo, and it's been working like a charm for several days now.

Overall Review: Check first that it will fit in your case. Fits fine with a few inches to spare in a Lian-Li PC7B plus II.

Pros: When paired with a Themaltake Thunderblade 120mm fan, this heatsink is absolutely amazing! (Remember the performance of this heatsink is directly dependant on the characteristics of the attached fan). The base is beautifully machined and very flat. It passes the "poor man's flatness test" fabulously with ease. Overall the construction is very well made. This heatsink/fan combination RADICALLY lowered the CPU temperature. The dual core AMD Opteron 175 under the Ultra-120 now runs at 24C when idle and 34C at full load, with the case temperature at 32C. Those are very favorable temperatues for this CPU.

Cons: This very large heatsink may not fit in your existing case. Be sure to measure the point of installation and compare it to the Ultra-120's dimensions before ordering. Or, know it fits correctly when you buy the Ultra-120 with the fabulous Thermaltake Armor case at Newegg.

Overall Review: With some pressure applied by hand, the installed heatsink can be rotated. Once installed, the heatsink will not rotate by itself, even with a heavy fan attached. The mounting system works well, yet could be improved by making the heatsink only be able to be mounted square to the CPU. The fan clips were somewhat difficult to use, though they did the intended job OK with the Thermaltake Thunderblade fan. Once the fan clips are put in the right position (which may take some experimentation to find), they will hold the fan acceptably reliably. Once you get the Ultra-120 installed, you will likely agree it was worth the effort. The Ultra-120 heatsink is indeed compatible with the S-Type clip from Thermalright. I know because I used an S-Type clip on the Ultra-120 I purchased. The S-Type clip enables the Ultra-120 to be oriented on the motherboard in the directions of North-South OR East-West.

Pros: Keeps my X2 4400+ (oc'd 2640 Mhz) 3-4 C degrees cooler a idle and 6-7 C degrees Cooler load, vs my Thermalright XP-120 heatsink. May try to overclock a little more after tim sets in and cpu burn in.

Cons: Could not fit in my older Cooler Master Aluminum case with side panel closed, about an inch of it was sticking out. Had to use an older steel case that was a litle wider, barely clearing heatsink and the case cover.

Overall Review: Mounting set up need some work, DFI CFX3200DR MB original backmount used, but careful to not over tighten.

Pros: High quality, heatpipe, 120mm fan mount, very good base.

Cons: backplate was manufactured poorly. Overtightening will break nuts out of it. However if you happen to do this by accident contact support, they have a newer, better part which they send for free!

Overall Review: Thermalright is the best.

Pros: Best cooler made! This is the 3rd update, see my posts when this cooler first came out. As we all know TR modded the mounting systems. As i noted early, but not well known the hs is dished for better cooling. The new 1366 brackets make this the best i7 cooler made!

Cons: You must addd more compound due to dish design and make sure you contacts well. You need extra pressure to get the full benfit. WSZ uses these for systems at 4.2ghz for air cooled qx9650 and we get 60-65c temps at full load. Bending the mounting arms helped the old mounts then new mounts work out of the box great! There is 3 different mounts the last is a great systyem.

Overall Review: Bring it back neweGG!!!!! The best i7 cooler made!

Pros: Ok, this is the heatsink to have! I'm currently running my Intel e6600 2.4Ghz Core 2 Duo at 22 degrees Celsius at idle and 32 under load. I'm thinking about over clocking it.

Cons: None

Overall Review: Some may say the size is an issue, but it fits just fine in my Antec p180 case and on my nForce 650i motherboard. The heatsink is big, but I wouldn't consider that as a Con. I put a 120mm fan on it and didn't really drop my idle temp that much and only cooled my load temp by a degree or two, so you really don't even need a fan on this thing!

Pros: Great heatsink for my E6600 CPU (in combination with a 800RPM Scythe fan). Keeps the chip very cool. Was extremely easy to mount on my P5N32-E SLI board (see other thoughts). I'm very pleased with this product.

Cons: Can't think of any.

Overall Review: The thing is huge. If you're using a removable motherboard tray, make sure it will slide into place when the heatsink is mounted. For me and my Lian Li PC-A10B case, I had to install the heatsink after sliding the motherboard tray in (with the heatsink base already in place underneath the motherboard).