Recently I got a very thin little book. It's perfect, but it's just a heat-dissipating crotch, and it's a bit of a stretch to get up to work.
Experience has taught me that it can also save me.
Colleague A put me on a drawer, cheap and efficient.
But it only fits the heat dissipation vent designed on the side or rear of the game book. And my little book is too thin, and the air outlet is designed at the hinge.
This is also one of the reasons why it dissipates heat and pulls the crotch. Maybe before the designer made the book, he didn't expect to meet someone like me who insisted on cutting it.
B told me that every time you render a video, you should put it in the refrigerator for a while and then take it out when you're done.
I said you should rest and go. Although people have feelings, the condensed water is merciless.
C told me not to be blind, to buy a bracket to support than anything, to believe in the power of nature.
I think it is also true that the whole bracket can also raise the notebook to prevent cervical spondylosis, so it is selected left and right on the Internet, just like the old father arranged a blind date for the child.
Many merchants have also marked their products with the inexplicable slogan of "very expensive, but really cooling". Well, are you trying to tell me what you pay for?
Later, I found out that there was a thing called "semiconductor heat dissipation bracket", which was very different.
Other brackets on the publicity map also dare to draw some wind and air flow or something, this thing directly rectified a large piece of ice, looking at it is cold panic.
There are also a lot of "condiments" in the e-commerce introduction page - superconducting ICE AI refrigeration plate, TEC thermal ceramic refrigeration wafer, cold zone air duct, dual accounting method temperature control chip, superconducting heat dissipation fin, noise reduction fan, 10,000 rpm motor...
If you don't practice your mouth, you can't pronounce these words.
Also took the lead in using what "RTX-level semi-conductive condensation technology" that Du Niang could not find out, is it the heat dissipation technology of Boss Huang's graphics card?
In short, the rational half of me, told me that this is a metaphysical product, do not buy. But the emotional half I said this thing is too cool, and not expensive, hurry up and buy it.
Ask Tara again, and find that the heat dissipation principle of this thing seems to have the support of some scientific theories.
Probably: the heat is forcibly transferred to the hot end (fin) through a semiconductor (thermoelectric refrigeration sheet), and then the fin heat is taken away through the fan...
We probably studied a few physics classes, and I feel quite reliable.
In the end, the rational half was also impressed: "What are you waiting for, buy!" ”
However, before placing an order, I found another point. The price of a treasure in this thing is generally 300-400 yuan, while a wholesale website only sells 168 yuan.
A treasure double semiconductor bracket set of 339 yuan
Wholesale price 168 yuan
You see, this tells us that we must shop around before spending money, and in less than a minute we will save more than 100 yuan. "Very expensive, but the effect is good" It is indeed "very expensive", but "whether the effect is good or not" is still debatable, in any case, the money is spent, the things have arrived, then can it achieve the advertised "3 seconds explosion of 78 °"? (Why not °C?) ), let's try it.
Start by opening a box to explain what it looks like and how to operate it.
There is a folding bracket inside the box, and the workmanship is general. After opening it, it feels unstable, and if you sink a little notebook, it may not be very easy to use.
Then there is the protagonist, the "semiconductor heatsink" that looks like a "graphics card", there are two of them.
The front is a skin-like material, and it feels a bit metallic to the touch. On the back is a fan with metal heat fins visible inside.
The side should be the air inlet, there is an open key and a Type-C power interface, I have to say that from the appearance of the material is indeed quite enough.
After the bracket is opened, the two "semiconductor heat sink" holes are placed on the bracket to assemble, and then we need to find two power supplies to connect it, because it does not have a built-in battery, so it is necessary to connect the external power supply all the time, to be honest, it is still quite troublesome to use.
After powering up, it can be found that the temperature of the front of this skin-like texture material is decreasing, and it is found that it is finally fixed at about 15 ° C through testing, as a control, and the surface temperature of the "semiconductor radiator" that is not energized is about 26 ° C - after powering on, the surface temperature of the "semiconductor radiator" is reduced by 11 ° C, so it is not at all to achieve the advertised "3 seconds plunge 78 °" Ah!
Regardless of these first, let's actually verify whether this thing can "cool down" my notebook.
Test object
Notebook semiconductor heatsink bracket in powered-on state
Test the control group
Skeletonized notebook holder
Flat wooden table top
Test the tool
Power-connected DELL XPS13 7390 2in1 thin and light book
Test Method:
1. Single bake test tool for 10 minutes, record CPU temperature, power consumption.
2. Perform 10 consecutive CBR23 running scores on the test tool and record the score
3. Test notebook semiconductor radiator bracket running noise
Test results
Tiled on the desktop: Because the air inlet on the back of the notebook is blocked by the desktop, the air intake volume inside the notebook is reduced, which eventually leads to a significant decline in computer performance and a failure of heat dissipation;
The notebook pad above the air bracket: the internal air circulation of the computer is greatly improved, and the full performance of the notebook computer is exerted, and the heat dissipation ability is excellent +;
Use of semiconductor heat dissipation bracket: Since the semiconductor does not fit well with the back of the notebook (leaving a larger gap than when placed flat on the desktop), it provides relatively good air circulation and excellent heat dissipation.
Test Conclusion:
Judging from the above test results, I came to the following conclusions:
Semiconductor radiator products do have a cooling effect
But it is far less than the "3 seconds plummeting 78°" advertised on the e-commerce page. The measured radiator itself can only be reduced to about 15 ° C at the lowest, and it is far from the "icing" effect depicted in the propaganda map.
Semiconductor radiators are very "picky" notebooks, and the heat dissipation effect is often unsatisfactory
Semiconductor heat sinks were originally designed for mobile phones, tablets and other devices (no fans) that use passive heat dissipation, which can effectively cool them.
Its principle is simply to help the device dissipate heat through heat transfer - the heat from the contact surface of the device is transmitted to the outside world through it.
Therefore, the boss also said in big red characters in the e-commerce page:
This stuff has no effect on plastic-shell notebooks and game books.
And in the actual use process, I found that the product itself and my notebook fit is not good, there is a large number of "hot air" in the environment involved in the conduction process, reducing the thermal conductivity efficiency, the notebook shell is still relatively hot.
This is a bit like not applying silicone grease when installing a CPU cooling fan, so it is impossible to transfer all the heat on the back of the notebook, and the actual heat dissipation effect is not as good as directly emptying the notebook, so that the notebook's own fan has more air circulation.
In addition, if this thing gives a laptop with active heat dissipation (with a fan) and an air intake on the back, there may be a DEBUFF - if the semiconductor heat sink is installed improperly, blocking the air inlet will affect the heat dissipation of the notebook even more.
Semiconductor radiators are too noisy and upsetting
After all, there is a fan, I bought this according to the manufacturer's publicity also uses a silent fan, but the measured noise value (camera position) can reach 60db. If you listen to such a big fan whistle for a long time, it is really easy to make people's heads bigger.
The use of ordinary notebook brackets (with cutouts) can play a good heat dissipation effect
Overall, the XPS 13 7390 2-in-1 computer I use is a thin and light product that is relatively in line with the target object of "notebook semiconductor heat dissipation bracket". However, during actual testing, I found that the product had fatal shortcomings such as "cooling does not meet the advertised number of seconds" and "cannot be effectively fitted to the notebook". So it seems to me that it (the semiconductor radiator) is like a scumbag, a thing that will only mess up your life and not be held accountable to you.
If you want your laptop to cool better, a sturdy skeleton stand is enough.