Comparison be quiet! Pure Rock 2 Black vs be quiet! Pure Rock 2

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Main	Heat sink up to 150W. Noise level less than 27 dB. Low height. Does not interfere with RAM modules. Compatible with all mainstream processor sockets.
Main specs
Features	for CPU	for CPU
Product type	air cooler	air cooler
Air flow direction	sideways (dispersion)	sideways (dispersion)
Max. TDP	150 W	150 W
Fan
Number of fans	1	1
Fan size	120 mm /Pure Wings 2 PWM/	120 mm
Bearing	Rifle Bearing	Rifle Bearing
Max. RPM	1500 rpm	1500 rpm
Speed controller	auto (PWM)	auto (PWM)
replaceable
Min noise level	19 dB	19 dB
Noise level	27 dB	27 dB
Power source	4-pin	4-pin
Radiator
Heat pipes	4	4
Heatpipe contact	straight	straight
Heatsink material	aluminium / copper	aluminium / copper
Plate material	aluminium	aluminium
Socket	AMD AM2/AM3/FM1/FM2 AMD AM4 AMD AM5 Intel 1150 Intel 1155/1156 Intel 2011 / 2011 v3 Intel 2066 Intel 1151 / 1151 v2 Intel 1200 Intel 1700 / 1851	AMD AM4 AMD AM5 Intel 1150 Intel 1155/1156 Intel 2011 / 2011 v3 Intel 2066 Intel 1151 / 1151 v2 Intel 1200 Intel 1700 / 1851
General
Mount type	bilateral (backplate)	bilateral (backplate)
Dimensions	121x87x155 mm	121x62x155 mm
Height	155 mm	155 mm
Weight	575 g	575 g
Added to E-Catalog	july 2020	april 2020

Socket

Socket - processor connector - with which the corresponding cooling system is compatible.

Different sockets differ not only in compatibility with a particular CPU, but also in the configuration of the mounting place for the cooling system. So, when purchasing a processor cooling system separately, it is worth making sure that it is compatible with the socket. Nowadays, solutions are mainly produced for the following types of sockets: AMD AM2/AM3/FM1/FM2, AMD AM4, AMD AM5, AMD TR4/TRX4, Intel 775, Intel 1150, Intel 1155/1156, Intel 1366, Intel 2011/2011 v3, Intel 2066, Intel 1151/1151 v2, Intel 1200, Intel 1700.

Dimensions

General dimensions of the cooling system. For water systems (see "Type"), this paragraph indicates the size of the external radiator (the dimensions of the water block in such devices are small, and there is no need to specify them in particular).

In general, this is a fairly obvious parameter. We only note that for case fans (see ibid.), the thickness is of particular importance — it directly depends on how much space the device will take up inside the system unit. At the same time, it is customary to refer to fans with a thin case for models in which this size does not exceed 20 mm.