Thermalright Ultra-120 eXtreme Rev.C & AC Freezer Xtreme Rev.2

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Thermalright Ultra-120 eXtreme Rev.C & Arctic Cooling Freezer Xtreme Rev.2

December 12, 2010 by Lawrence Lee

Thermalright Ultra-120 eXtreme Rev.C
CPU Cooler
Arctic Cooling Freezer Xtreme Rev.2
CPU Cooler
Thermalright Arctic Cooling
Street Price
US$50~$55 US$35~$40

The Thermalright Ultra-120 eXtreme Rev.C and Arctic Cooling Freezer Xtreme Rev.2 are revisions of older coolers. Both utilize the word "extreme" to convince us of their exceptional cooling performance. The similarities end there, though, as they are very different designs.

The Ultra-120 eXtreme is a classic tower cooler, a legendary former SPCR champ. Though time has eroded its position, it has aged graciously, still performing well by today's standards. Thermalright has not messed much with the Rev.C; it features only a few minor improvements.

We never reviewed the original Arctic Cooling Freezer Xtreme, but that isn't much of an issue as the only real difference in the Rev.2 model is added LGA1156 and LGA1366 compatibility. It utilizes a less traditional design with a fan wedge between two banks of heatpiped tower fins.

Comparing packages.

The packaging for each heatsink is modest in its own way. The Freezer Xtreme comes in a plastic clamshell (that thankfully snaps open easily) barely larger than the heatsink itself. Thermalright has stuck with its tradmark plain cardboard boxes, albeit cushioned on the inside with styrofoam. The box size is much larger as the Ultra-120 eXtreme is bigger and has a more elaborate mounting system.

Thermalright Ultra-120 eXtreme Rev.C

The original Ultra-120 eXtreme was a rarity in that it lived up to both its "ultra" and "extreme" moniker. The Rev.C is slight tweak with the main changes being slightly fewer fins and a revamped mounting system which is supposed to provide higher pressure betweeen CPU and heatink, with improved cooling the result. There is also a Rev.B which has the same fin count as the original but is otherwise identical to the Rev.C.

Original mounting hardware.

Revised mounting hardware.

The original Ultra-120 eXtreme used a simple "X" shaped clamp to bolt the heatsink to the backplate. The Rev.B/C adopts a Noctua/Prolimatech style mount that secures the backplate first to a pair of metal arms, then a bar passing over the heatsink base is bolted to the metal arms. One clear advantage is the backplate stays in place if you need to remove the cooler.

Specifications: Thermalright Ultra-120 eXtreme Rev.C
(from the product web page)
Dimension: L63.44 x W132 x H160.5 mm (heatsink only)
Weight: 790g (Heatsink Only)
Recommended Fan: All 120mm Fan
CPU Support
Intel Core i7 Processor

Intel Core 2 extreme and any Socket 775 Processor*

AMD Phenom X4 and any Socket AM2 / AM2+ / AM3 Processor
*note: our sample did not ship with LGA775 mounting hardware.

Arctic Cooling Freezer Xtreme Rev.2

Arctic Cooling made their name with cost effective marvels of clever engineering that provided decent and quiet cooling at rock bottom prices. Their Alpine series of heatsink/fans are popular, affordable quiet alternatives to stock AMD and Intel coolers. The Freezer line is composed of larger tower coolers, though only one model sticks out as a possible high performance heatsink, the Freezer Xtreme.

Box contents.

The Freezer Xtreme Rev.2 uses a design with a fan at the center, a method that is difficult to pull off in our experience. It also features its own pushpin mounting system, about which we have some reservations, just as we do about Intel's. From what we can tell, the Rev.2 is more or less identical to the original, only with an updated mounting system and compatibility for LGA1156 and LGA1366.

Specifications: Arctic Cooling Freezer Xtreme Rev.2
(from the product web page)
130L x 100W x 131H mm
120mm x 1
Fan speed
800 -1500 RPM (Controlled by PWM)
Air flow
35.7CFM / 60.7 m3/h
Maximum Cooling Capacity
160 Watts
DE 20307981, US 7101149
6 year

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