by R. K. Bloom

Comparison coolers c using heat pipes

Comparison coolers c using heat pipes

Fire, water and copper pipes

As is evident from the title, today, we will cool the hottest to date processor (“Fire” :) . Naturally, this processor is Pentium4, the maximum heat dissipation which is close to around 100W. Moreover, this threshold is overcome with the release of a new processor core Prescott. It is clear that to cool the processor of the classic aluminum coolers will be completely ineffective. Therefore, manufacturers are looking for alternative methods of cooling, two of which we are reviewing today. The first – a system of liquid cooling Poseidon (“Water”) and the second – air coolers using the “heat” pipes (“copper pipe” :) .

A few words about the “heat” pipes. The main objective of the heat pipe – quickly transfer heat from one end to another. Typically, the heat pipe is made of copper inside the low-boiling liquid. Inside the tube (in the part that is closest to the heat source), the liquid evaporates, absorbing heat. And at the other end of the tube the liquid condenses, provided that if the tube is connected to any sink. In other words, the “heat pipe” is intended solely for the transmission of heat, but by itself to cool the CPU (or other heat source) is not able to. By the way, we have already seen similar cooling system – it is a cooler for graphics cards Zalman ZM80C-HP.

Thermalright SP-94

In the Taiwanese company Thermalright a very interesting approach to business: it sells only the radiators. That is, user must set the fan to your liking. The radiator is supplied in a large cardboard box:

It should be noted that all components are carefully packed in foam to prevent damage in transit. In addition to the radiator, the bundle includes hardware, reinforcement plate, syringe of thermal paste and screws for the fan.

First, consider the design of the radiator.

So, on the basis of all the copper has more than two dozen copper fins. And for the more rapid heat sink built into the base of the three “thermal” tube.

In this case, each edge is in contact with the tube fairly extensive area. To do this, the holes in the ribs have a special “petals” which are densely covered up. In addition, between the “tube” and “petal” is a small layer of thermal interface, which also contributes to heat transfer.

At least qualitatively realized the contact between the fins and the base of the radiator. Each edge is inserted into a special slot at the bottom. In addition, the edges are small areas that are in contact with the upper side of the base. This site is actively used by the thermal interface.

As a result, it can be concluded that, although the edges and bottom do not make a whole, the efficiency of the radiator SP-94 does not yield tselnomednomu.

As the base, its quality is very, very good. Like most high-quality coolers are based on the protective film that must be removed before installing the radiator. By the way, the installation process is very long radiator and the average user may find it difficult. Especially when you consider the lack of guidance on how to install inside the box and on the website.

However, this product is aimed at overclockers and other “advanced” audience, which has with his hands and his head is all right. So the first step – mounting frame must be removed from the motherboard. To do this, take out the plastic pins, and then, using a pair of pliers (or strong fingers :) remove the frame.

The next step – establish an enforcement plate. In the center of this plate has a rubber gasket, which prevents any closure. To this end, the holes of the motherboard is passed special pins, and tighten them. Strong twist does not necessarily – just a few turns.

If desired, a sleeve can be laid plastic pads, which are included in the box SP-94.

The next step – Apply a layer of thermal paste (I used KPT-8), set the heat sink and look at the imprint. If all pins are tightened evenly, then we get a full impression of the processor.

Then everything is simple: insert the spring loaded screws and tighten them evenly all the way.

After installation are extra details :) , but do not worry – it should be (they alternate).

The next step – installing the fan. To do this, take the appropriate fan and fix it with a wire fastener:

In the SP-94 heatsink is permitted for 80 and 92mm fans. Which fan is installed: noisy and productive, or quiet – it is entirely caring person. For testing I used a 92mm fan Zalman ZM-F2 with a speed of 2800RPM and noise 36dBa.

Interim conclusion: SP-94 heatsink gives the impression of a good and effective product that is primarily interested in overclocking. With regard to the installation procedure, then the one hand it is simple (no need to think :) , but on the other – quite long.