Problem 1: thermal grease, thermal silica gel, thermal silica pads difference.
Thermal conductivity, low degree of oil from the general computer for CPU, graphics, or North and South bridge chip gap filling; thermal conductivity of silicone grease is a high thermal conductivity of insulating silicone material, not easy to cure, grease state, with electrical insulation, Can be cured, there is a certain adhesive properties, the stick is not easy to separate after the general computer chips for the heat sink bonding; silicone pad is a sheet of material for the gap larger gap connection, the process thickness from 0.5 Mm ~ 5mm range, the computer used less.
Question 2: Why should silicone grease?
In radiator and chip applications, even a very smooth surface of the two planes in the contact will have a slight gap occurs, the air gap is Heat of the poor conductor , Will hinder the heat transfer to the heat sink and grease is a kind of can fill these gaps, so that the heat conduction is more smooth and rapid material, the chip temperature is maintained at a stable level of work to prevent the heat and prolong the service life.
Question three: Silver conductive thermal conductivity of silicone grease it?
A; silver silice added silver component, the effect is better than ordinary silicone grease, silicone grease containing other chemicals, for the computer motherboard 5_10V DC is relatively insulated.
Question 4: how to apply grease?
There is no standard way, but there is a rule, the key is to apply uniform, no bubbles, no impurities, as thin as possible. There are two main ways, one in the center of the chip surface squeeze On a little silicone grease, and then rely on the pressure of the radiator silicone grease extrusion uniform, another way is to use silicone grease evenly applied to the surface of the chip.The model of silicone grease with a scraper to facilitate smearing, do not worry.
Question five: This lipids ye so expensive?
Silver on the market cheap silicone grease is not necessarily the real silver siliceous, it may be carbon-doped silicon grease, aluminum-doped silicone grease in the brand of silver will be based on his Different silver content While the price difference.Special attention is the market of gold grease, it is not 'gold' grease, which generally contain copper oxide only, the effect is less than silver-containing silicone grease.
Question 6: how much time for a silicone grease?
Silicone grease is used to heat, and a long time will dry, performance degradation, of course, to change, otherwise it is not thermal, but into the insulation! In general, ordinary grease 6 to 12 months for a silver-containing silicon Fat 2 years or so, according to the temperature and the use of the environment a slight change.
With the release of a new generation of Ivy Bridge platform, I believe that many players have learned about its performance, there are just around the corner to upgrade the platform intention.Often when many players will be affected by the mood and ignored the installation of the radiator cooling silicon Some players will be the original radiator directly installed in the new platform, and some will be directly smearing a layer of hastily done, will forget the smear heat silicone grease when those little details.
Players to buy new accessories will certainly be affected by the mood, when a small detail to determine the cooling effect of the entire platform.Often people because of the emergence of new things and emotional changes, often people in life Some people pay attention to the details of the small neglected, every little detail may be a thing or a key to success.In fact, the same applies smearing silicone grease, do not think of it as a small or can be ignored details , Smear bad heat will have a great impact.
Here we first come to know some of the thermal grease, a lot of netizens know that heat is applied on the surface of the CPU heat transfer heat to the radiator, this argument may have objections to the players here we look at the term thermal grease Explanation:
Thermal grease:Commonly known as thermal paste, based on special silicone oil base oil, a new type of metal oxide filler, together with a variety of functional additives, processed by a specific process paste. Color due to the different materials and have different appearance.
It has good thermal conductivity, heat resistance, insulation properties, is the ideal dielectric material heat-resistant devices, and stable performance, in use will not produce corrosive gases, will not have an impact on the metal contact.
High-purity fillers and silicones ensure smooth, uniform and high-temperature insulation of the product. Apply to power devices and heatsink assembly surfaces to help eliminate air gaps in the contact surfaces Increase heat flow, reduce thermal resistance, and reduce power device Operating temperature, increased reliability and extended service life.
A wide range of thermal grease
As explained in terms of heat dissipation of silicone grease play a role in accelerating the heat transfer, thermal conductivity media, increase the contact area filled with CPU heatsink cover and the middle of the pothole and so on. Radiator grease is not a coating on the best play Effect, coated with heat grease, after a period of start-up, shut down after the hot and cold cycle, squeezing out the excess heat in the silicone grease to fill the gap between the CPU and the radiator, the thermal effect is real Fully play the heat resistance of silicone grease is larger than the metal, it is not a large amount of good.
Of course, when the players and then upgrade the platform often do not clean the processor and the heat sink on the dust or attached to the processor surface stains, when we get a new processor and do not worry about smearing thermal grease installed radiator , Should be on the processor and the radiator base for cleaning.
Clean the cotton or cotton should be used clean, carefully wipe.If there are some stains can not use some volatile liquid, such as: alcohol and so on.In the use of these liquids should not be too much, cotton or cotton Some wet on it.
For a long time using a processor and heat sink players will find the processor surface or radiator base will appear stubborn stains.For stubborn stains, to be repeated wipe, to avoid the use of hard objects to smear, if you use Hard items will cause the surface is not clear, there will be scratches.Wipe clean after the processor to dry to ensure that the surface of the dry.
CPU surface scratches
Scratches and oxidation of the radiator base
Radiator base is copper and aluminum material, it is easy to rust, clean metal surface in the air can easily be oxidized, do not place the radiator for a long time, it is recommended that you clean up after the installation of silicone grease applied . Some radiator storage time is too long or the player is using the radiator to be cleaned, so that the radiator base more or less a certain degree of oxidation, it is recommended that players can use when the fine sand, gently polished , When the unique color of the metal exposed on the polished after the cleaning work to clean up the magazine.
For entry-level players smearing silicone grease there is a misunderstanding that the heat of the silicone grease to the number of all to be used out, so many players believe that the concept has been seen from the thermal performance in terms of, Good thermal grease is also better than copper and aluminum, but these metal materials.Copper thermal conductivity is a high-grade thermal grease about a hundred times the heat on the thermal conductivity of the players can refer to the next "Do not tangle the heat sink can also save money on the grease ?"This article.
Excessive thermal grease
Benefits of thermal grease
Non-uniform thermal grease
DIY have a certain understanding of the players mainly use two methods, one is squeezed on the surface of the processor a little heat silicone grease, then use the radiator on the use of radiator pressure will heat silicone grease extrusion uniform, which is the method Is a relatively lazy way, this method may be the above two kinds of problems is a spillover mainly because too much smear.One is because of the uneven heat dissipation of silicone resin extrusion force uneven upside down Thermal grease is not uniform.
Scraper type smear method
Another method is to evenly spread the heat grease on the surface of the processor, this method may produce bubbles, there may be a magazine attached to the top. Then you can use the scraper comes with the radiator, there are Of the radiator may not be attached to the scraper.No words can be found in a plastic board with a processor to cut the size of the same, the use of homemade tools smear even, or the use of Zhitao, hand smear.
I believe that these two methods have a simple understanding of the first type of compression is more suitable for smaller processor area, the second method of using the scraper or finger sets is a larger processor area. According to the player's own choice of smear method.
On the grease of the heat test, our test platform today is not complicated, and no need to get to the bottom, this test is only with the radiator and the heat source of these two.
The first is the heat source, is from Intel's i5-2500k.
Next is the radiator, is from the Si Min CNPS10X COOLIFE is a tower side blow CPU radiator, the main structure size of 132 (W) x 85 (L) x 156 (H) mm. Radiator with 5 heat pipe with 120mm PWM fan. Fan speed range of 800-1800RPM. Radiator support Intel LGA1366, LGA115x, LGA775 and AMD's AM3 / AM2 + / AM2 platform, can be said to be a clean sweep.
Si Min CNPS10X COOLIFECPU radiator
The test method is relatively simple, monitoring the use of Everest monitoring data, select the copy machine 15 minutes to 29 minutes 59 seconds of data. CPU to increase the load using Everest.
Grease application effect (Left: Coated right: Thin)
In addition, including a Z77, two memory, a hard drive, power supply display keyboard and mouse one, for our tests are irrelevant information, please ignore.
From the above test results of thin thermal grease and thick silicone grease full load temperature difference of 2 degrees, the standby temperature is almost the same.It seems thin silicone grease effect is still a certain degree of cooling effect, but for 2 degrees , The chassis will reduce several degrees, so for the overall effect should be very good.
After the test we see the thinner the better silicone grease, then how to heat the application of thinner silicone grease, I think this should be regarded as a technical live here we take a look at how foreign players will be coated with thermal grease (From Benchmark Reviews in 2008 introduced the thermal grease smear Raiders.)
The first is the common flat base
Intermediate one-point smearing tutorial
One Word Tutorial
Two word method smearing tutorial
Cross Painting Tutorial
The above four methods are dot method, one word method, two character method and cross method. They are applicable to small base, long base, large square base and large square base (though all are the same radiator).
But no matter how smear, the final results are as follows on the right:
Thermal grease smear results
See the above picture, unlike the original heat sink on the thermal grease effect if the player can be painted like this, it seems you are already a master of the.
Of course, sometimes we will encounter some special circumstances:
Circular base a little smear
This should be the original plug copper radiator Intel, the center uses a circular copper base, smear to the effect after the like.As for the thin, with copper base radiator can be a very simple criteria for judging, Is vaguely can see copper is thin thickness right!
Of course there is a most special, heat pipe direct touch:
Heat pipe straight touch the base a little
Direct contact with two-point heat pipe base
Heat pipe straight touch base two word type
Heat pipe directly touch the base of the key is that the heat pipe direct touch process is likely to cause a great gap, taking into account the heat transfer efficiency of silicone grease is far greater than the air, it is recommended that you fill these gaps!
No matter what kind of radiator base from the above tutorial we can see the final effect is smear even thin layer on it, some people will ask that in the end how much is a thin? Coated thermal grease Thick vaguely see the bottom of the surface can be, and heat must be uniformly applied silicone grease.
Through the silicone grease can be summed up, silicone grease is not a one-time use, the players should be regularly re-coated for the platform heat grease, so as to better platform to have a better cooling effect, especially for those who love overclocking Players, overclocking a long time will affect the heat.
Overclocking will bring higher temperatures, some players will feel the computer temperature is higher than usual, after excluding all the circumstances only after the heat sink between the processor and heat sink grease, the player may wish to win the radiator processor And the heat sink on the base of the heat clean silicone grease to re-apply heat, so I believe that some players are encountered.
Apply silicone grease
Heat a little a tube of silicone grease can solve the heat problem, as long as the player in the painting process skills, regardless of the players what kind of method.As long as the guarantee:
1. Smooth silicone grease evenly
2. Thermal grease applied as thin as possible
3. Thermal grease to be no impurities
4. Thermal grease applied to no bubbles
To ensure that these four points can be a good solution to the heat problem, heat grease as thin as possible, but heat coefficient is much higher than the air, but the metal in direct contact with or a certain gap. Silicone grease recommended the use of hand or special tools, radiator extrusion accident will occur, may also spread the effect of uneven, so as not to appear uneven, there are bubbles and other impurities.