The Thermalright Ultra-120 eXtreme 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 both Intel's Socket 775 and AMD's Socket AM2 right out of the box - no accessories needed. Choose a fan that best suits your needs, this heatsink will cool well no matter what fan you use!

Features

• Core 2 Duo and Core 2 Extreme Ready
• AM2 Ready
• Quiet and powerful cooling due to multiple heat pipes and large aluminum fin area
• Proprietary bent winglet design to minimize airflow resistance
• Heat pipes soldered to base (nickel plated)and fins for optimum heat transfer
• Include both bolt-thru-board retention brackets for Intel and AMD**

Dimension:	63.44 x 132 x 160.5 mm (heatsink only) (L x W x H)
Weight:	790g (heatsink only)
Recommended Fan:	Any 120mm Fan
Compatibility:	All Intel LGA775 processors All AMD Socket AM2 Processors

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 (1)
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