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Home > Hardware Reviews > Cooling Systems

Tuesday, June 07, 2005
Spire Coolers

1. Introduction

Spire was founded in 1991 and has since then been offering a wide range of cooling solutions, PC cases, power supplies and modding accessories. Spire's production facilities are located in China, their corporate office in the USA while they have overseas branches in The Netherlands, U.K., Germany, France, Taiwan, Japan and Brazil.

CDRinfo.com had the pleasure to visit Spire's booth at CeBIT2005 earlier this year and Spire's friendly staff introduced us to the whole range of thermal products they offer. You won't see any extreme solutions, any fancy lights or any impressive designs from Spire. Their coolers are however, known to deliver what they promise.

In this review, we will be testing two of their CPU coolers, the KestrelKing V (SP792B12-U) and the KestrelKing VI (SP779B3-1). Both coolers support the AMD64, Opteron and Sempron platforms (K8).

KestrelKing V (SP792B12-U) - Copper based & Super quiet fan
KestrelKing VI (SP779B3-1) - Copper Base stamping fin

- Features / Specifications

The KestrelKing V works in the simplest possible way that a fan cooler can. There are no heat pipes or any kinds of modifications and patented cooling systems. The fan spins at 2700 RPM +/-10%, producing only 22.0 dBA of noise. On the bottom, you can see the copper base that is common on most coolers.

KestrelKing V (SP792B12-U)

The KestrelKing VI on the other hand uses a more powerful cooler to achieve lower temperatures. It also has a copper base, but in addition to that it uses the Stamped Fin technology, temperature control & auto restart. The fan's rotation speed varies from 3050 RPM to 6000 RPM (+/-10%), producing low noise levels at the slowest rotation speed, but when CPU temperatures increases, the cooler's rotation speed increases, producing higher noise levels than the stock AMD cooler.

KestrelKing VI (SP779B3-1)

Here are the detailed specifications, as provided by Spire:

Socket 754 / 940 / 939 Cooling kits

Product Name

KestrelKing V
( SP792B12-U)
KestrelKing VI
(SP779B3-1)

Dimensions

Heat sink : 70×55×43 mm
(l × w × h)
Heat sink : 107×80×60 mm
(l × w × h)
12VDC Fan: 80×80×25mm 12VDC Fan: 70×70×25mm

Bearing

Ball bearing

Rated speed

2700 RPM +/-10%

3050 ~ 6000 RPM +/-10%

Rated power

1.80 W

2.40 W

Noise level

22.0 dBA

21.0 ~ 40.0 dBA

Air flow

34.46 CFM at 2,700 RPM

21.3 CFM at 3,050 RPM
41.9 CFM at 6,000 RPM

Current

0.15 A

0.20 ~ 0.40 A

Life hours

Ball: 50.000

Features

Blue transparent diamond fan, 6 prong tool-less clip, Copper base

Easy install and remove system, Copper base, Stamped fin technology, Temperature control & Auto restart

Connector

3 Pin, mainboard

Application

AMD :   

Athlon 64 ~ 4000+ (K8)

 

Athlon 64 FX-51 (K8)

 

Athlon 64 FX-53 (K8)

 

Opteron ~ 850 (K8)

 

Sempron ~ 3100+ (K8)

Thermal resistance

0.345 °C/W

0.309 °C/W

Thermal type

White grease pre-applied

Stars-420 white grease (Injection tube)

The KestrelKing series is designed for AMD equipped systems and cannot be fitted on any Intel based models.




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