The Thermalright Ultra-120 eXtreme 775 RT CPU Heatsink is an upgrade on the highly accoladed Ultra-120. Featuring more heatpipes, a larger fin area and better heat dissipation, the eXtreme is compatible with Intel's Socket 775 right out of the box - no accessories needed.

*Note: Socket LGA1366, AM2 and Xeons require the optional Bolt-thru-kits in options below!!

Features

• Uses high quality aluminum fins for best balance of heat absorption and conduction.
• Utilizes six high quality 6mm heatpipes, strategically positioned to pick up the heat from the CPU.
• Proprietary bent winglet design to minimize airflow resistance.
• Heat pipes soldered to base (nickel plated) and fins for optimum heat transfer.
• Stack of 52 pieces of aluminum fins, the most over any other heatsinks in the market. Can be covered entirely by a 120mm fan to absorb all in-coming air flow.
• Vast compatibility list for multiple multi-core CPUs and platforms.
• Includes one Ultra low noise “Fluid Dynamic Bearing” fan (1000RPM)
• Includes the NEW 120x25mm Fan holder.

Heatsink
Dimension:	L133 x W156 x H38 mm
Weight:	790g (Heatsink only)
Heat pipes:	Six heat pipes
Fan
Dimension:	L120*W120*H25mm
Bearing type:	FDB (Fluid Dynamic Bearing)
Rated Speed:	1000RPM
Noise Level:	15.8 dBA
Air Flow:	38.9 CFM
Compatibility:	All Intel LGA 775 processors Supports Intel Core i7 Processor (mounting ware sold separately)

06-18-2008
Reviewer: kevlar383 (1)
The baseplate on mine was VERY uneven. Apparently quality control at Thermalright does not check for flatness. Unless you consider an evening of lapping a new heatsink a good time, I would skip this one. Otherwise, after lapping, it works great; temps way down now!

05-05-2008
Reviewer: SlabbOMeat (1)
The bottom of this heatsink has ridges large enough that your fingernail makes a zipping noise if you run it across. Having read another review about that possibility, I got the lapping kit here (will write review on that after this). Anyhow, delivers as promised. My CPU is super cool! My install is currently curing, but temps far below oversized stock QX9650 cooler.

03-14-2008
Reviewer: WhiteRaven (1)
This Heatsink drops my idle temp from 24c to 17c! load temp doesnt hit above 25c! Using a E8400 @3.6ghz 1.225v

01-06-2008
Reviewer: Andrey (4)
Pros - Retention is amazing...spring mounted screws - Cooling is amazing...keeps my Processor at ambient at idle, below 50 at load (Q6600 at 3.45Ghz and 1.6v) - 120mm fan of your choice can be attached - Fan retention is a lot sturdier than it looks - Effective fan vibration dampening - Less expensive than the water cooling kits that it absolutely OWNS - Beautiful construction - 6 HEAT PIPES! - It''s the Ultra 120 A on steroids Cons - Huge - Sometimes too powerful to handle...hehehe

11-02-2007
Reviewer: Lumpyguitar (2)
This is an awesome heatsink. I installed it on a Q6600 on an Abit IP35Pro and it fits inside my case, a Lian-Li v1000b, without any issues. However, theres a reason for the 4 stars instead of the 5. Installation is complicated. If your using a socket 775 chip, you have to remove your motherboard from the chassis to install the rear mounting bracket. Installing the heatsink on top of it with the spring loaded screws is pretty tricky, but installing a fan using the fan brackets, is next to impossible. Bottom line - An amazing heatsink, worth the money and installation effort, just understand that it comes with a bit of work to get it on.

AnandTech.com March 7th, 2007