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Cooler Master Hyper 48 (KHC-L91-U2)

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The general trademark of a manufacturer by which the consumer knows its products. A manufacturer can have multiple brand names. Some manufacturers license their brand names to other producers.
Cooler Master
Product name:
Product name is a brand's identification of a product, often a model name, but not totally unique as it can include some product variants. Product name is a key part of the Icecat product title on a product data-sheet.
Hyper 48 (KHC-L91-U2)
Article code :
The brand's unique identifier for a product. Multiple product codes can be mapped to one mother product code if the specifications are identical. We map away wrong codes or sometimes logistic variants.
Components which remove the waste heat produced by computer components, and keep components within permissible operating temperature limits.
computer cooling components
Data-sheet quality: created/standardized by Icecat
The quality of the data-sheets can be on several levels:
only logistic data imported: we have only basic data imported from a supplier, a data-sheet is not yet created by an editor.
created by Cooler Master: a data-sheet is imported from an official source from a manufacturer. But the data-sheet is not yet standardized by an Icecat editor.
created/standardized by Icecat: the data-sheet is created or standardized by an Icecat editor.
Included since: 03 Apr 2005
The date Icecat noticed for the first time that this product was included in the price list of a channel partner
Product views: 8126
This statistic is based on the 74970 using ecommerce sites (eshops, distributors, comparison sites, ecommerce ASPs, purchase systems, etc) daily downloading this Icecat data-sheet since 03-04-05 Only sponsoring brands are included in the free Open Icecat content distribution as used by 73259 free Open Icecat users.
Info modified on: 22 Nov 2017 04:00:24
The date of the most recent change of the data-sheet in Icecat's system
Long product name Cooler Master Hyper 48 (KHC-L91-U2) :
The short editorial description of Cooler Master Hyper 48 (KHC-L91-U2)

Hyper 48 (KHC-L91-U2)

Cooler Master Hyper 48 (KHC-L91-U2):
The official marketing text of Cooler Master Hyper 48 (KHC-L91-U2) as supplied by the manufacturer
Hyper 48 is built for high performance. This super silent CPU cooler, with heat-pipe technology, wicks heat away and replaces it with the cooling breeze of a 92mm ball bearing fan. Four copper pipes embedded in densely packed copper fins dissipate heat rapidly and efficiently. The powerful good looks and quiet operation of Hyper 48 supports the latest Prescott LGA775, Pentium 4 and AMD's K8.

- Copper Stacking Fin & 4 Heat-pipe
- High Air Flow 90x90x25mm Fan
- Perfect Pin/Fin Rate:Not only supports the newest Intel Prescott LGA 775 but also Intel Pentium 4 and AMD K8.
- High performance Thermal Grease
- Universal Retention Module
- Provide Fan Grill protect user & system
Short summary description Cooler Master Hyper 48 (KHC-L91-U2):
This short summary of the Cooler Master Hyper 48 (KHC-L91-U2) data-sheet is auto-generated and uses the product title and the first six key specs.
Cooler Master Hyper 48 (KHC-L91-U2), 18.5 dB, Socket 478 / 754 / 940 / 939 / LGA775, Black, Copper, 29.2 oz (828 g), 4.13 x 2.76 x 3.7" (105 x 70 x 94 mm)
Long summary description Cooler Master Hyper 48 (KHC-L91-U2) :

Cooler Master Hyper 48 (KHC-L91-U2). Noise level (high speed): 18.5 dB, Compatibility: Socket 478 / 754 / 940 / 939 / LGA775. Color of product: Black, Material: Copper. Weight: 29.2 oz (828 g). Dimensions (WxDxH): 4.13 x 2.76 x 3.7" (105 x 70 x 94 mm), Connector(s): 3 / 4 Pin

This is an auto-generated long summary of Cooler Master Hyper 48 (KHC-L91-U2) based on the first three specs of the first five spec groups.

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Noise level (high speed)
18.5 dB
Speed detection
Socket 478 / 754 / 940 / 939 / LGA775
Color of product
Weight & dimensions
29.2 oz (828 g)
Other features
Dimensions (WxDxH)
4.13 x 2.76 x 3.7" (105 x 70 x 94 mm)
Power requirements
3 / 4 Pin
Product life
50000 h
37.65 - 64.19
Source Testseek summary Average rating
Testseek has collected 8 expert reviews for Cooler Master Hyper 48 (KHC-L91-U2) and the average expert rating is 80 of 100. The average score reflects the expert community’s view on this product. Click below and use Testseek to see all ratings, product awards and conclusions.
Source Review comments Score
This little guy stands out from the competition by being a bit smaller than most and fabricated entirely of copper. It has four copper heat pipes, copper fins, and a 92mm fan. The fan features pulse-width modulation (PWM), which varies speed according...
Heatpipes seem to be hip these days. Almost every cooler that is meant to be used in extreme conditions are equipped at least two of them. Cooler Masters Hyper 48 is no exception. It offers four heatpipes to carry all that heat from the base of the...
Good Low noise, Excellent performance, Multiplatform support, Low price...
Bad Fan bracket needs rethinking...
Bottom line Fan bracket needs rethinking "Editors Choice" Award With a price tag around $40 the cooler can be concidered to be cheap for its performance. All copper construction combined with four heatpipes seems to be the ticket for really good performance. To...
Heat pipes are one of the biggest advances in air cooling. They allow computer enthusiasts to gain impressive overclocks while remaining cheap enough that almost anyone can afford to buy a heat pipe. Today we are going to take a look at the Cooler Mas...
Good Silent, Effective Cooling, Fits nicely...
Bad Installation Time, Boring Fan...
Bottom line I was very impressed with the results that I received from the Hyper 48. My temperatures dropped 11 - 15 (idle - full load) degrees Celsius from the temperatures that the system ran at while using stock cooling. The Hyper 48 was barely able to beat th...
The KHC-L91 Hyper48 comes with a collection of brackets and mounting plates which enable its use on socket 478/775 Intel Pentium 4 and socket 754/939/940 AMD Athlon64 processors.
As I mentioned in another review previously, I really do have a short list of companies that I actually enjoy working with?Cooler Master is definitely on that list! Today I have the enviable pleasure of reviewing their newest heatpipe cooler, the Hype...
Price: $ 46,99US @ XoxideCoolermaster Ultra silent Hyper 48 S775 coolerToday we have something interesting (to me at least) on the test bench. I just converted over to a socket 775 rig and Im very curious if there are any coolers out there that can co...
Yet another new high-end HSF from CoolerMaster...
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