How to judge the heat dissipation of notebook computer.

Heat dissipation can be said to be the second important parameter of the pen bar evaluation room (the screen ranks first). A computer with poor heat dissipation will lead to a decline in all aspects of experience, which can be described as "taking the lead and moving the whole body."

According to my impression, starting from Intel's 8th generation Core, notebook computers with extremely poor heat dissipation are very rare. Most products are in a state of sufficient heat dissipation, and in the worst case, they will make a trade-off between performance and noise.

So how do we judge the heat dissipation of the notebook?

Today, let's make a brief analysis:

Hp star 13 Air

Left side of fuselage

Right side of fuselage

Its configuration is as follows:

R7 5800U processor

16GB 3200MHz memory

5 12GB SSD

13.3 inch 2560 1600 resolution 100%sRGB color gamut 16: 10 scale IPS screen.

Battery capacity 43Wh

Thickness16.35-16.65mm.

The fuselage weighs 0.96kg.

The adapter weighs 347 grams.

The current price is 5999 yuan.

R5 version costs 5399 yuan.

Its advantages and disadvantages are as follows:

Advantages!

1, the fuselage is extremely light, and three sides are made of magnesium-aluminum alloy.

2, good screen quality, high resolution+high brightness+high screen ratio.

3. The fuselage has many colors.

Moonlight silver ceramic white streamer gold rose gold four optional.

Disadvantages!

1, the keyboard backlight uniformity is average, and the power-on key is too close to the del key.

2. Under high load, the temperature on the left side of the keyboard is very high.

3, the battery capacity is small

Upgrade suggestion

It is not difficult to disassemble this laptop. Tear off the two foot pads, remove the five screws of the D shell, and then remove the back cover with the aid of suction cups.

Dual-channel 16GB DDR4 3200MHz memory, which is on board, and cannot be upgraded.

The SSD capacity of the tester is 5 12GB, which is an OEM model of Magnum and supports PCIe3.0 4 and NVMe. If you have special needs, you can replace the SSD.

Purchase suggestion

1, which requires high portability of computers.

2. Users who like white or high-value notebooks.

3. The requirements for game performance are not high.

The biggest feature of Star 13 Air is its lightness. Many small-sized notebooks on the market are actually very heavy, and Star 13 Air adopts magnesium-aluminum alloy body, which successfully achieves 960g and has many color matching options.

On the screen, it uses a DC dimming panel, and the measured color gamut volume is 102.5%sRGB, the color gamut coverage is 96.6%sRGB, the average e is 1.38, the maximum e is 6. 17, and the measured maximum brightness is 456. 1 ni.

In terms of interface, the left side of the fuselage has HDMI2.0, USB3.2 Gen 1 Type-A, full-function Type-C (supporting PD charging) and 3.5mm headphone jack, and the right side has USB3.2 Gen 1 Type-A jack.

It is worth mentioning that the A mouth of the whole body is folded and needs to be adapted.

In terms of endurance, the endurance test score of PCmark 10 is 1 1 hour 10 minute. (Scene: Modern Office)

In terms of noise, its full-load decibel value is 4 1.5dB, which is relatively quiet.

Star 13 Air is a notebook with pure nuclear display, and it is also the most conscientious product of HP STAR series in recent years. R5 version is more cost-effective, starting from 4999 yuan, and now it has risen to 5399 yuan.

So if you care about the portability of the fuselage and want a white notebook, then this computer is very suitable for you.

But if you have requirements for game performance, it's not for you.

Conscience conclusion of pig king

The above picture shows HP Star 13 Air disassembled, single fan and single heat pipe assembly.

Room temperature 25

Reflectance 1.0

BIOS version: F.0 1

For a thin notebook without a unique display screen, we use a low-load pressure CPU for stress testing.

At full load, the CPU temperature reached 77.8, and finally stabilized at 72. 1, power consumption 15W, and frequency was 2.95Ghz.

Back temperature of roaster

The surface temperature is shown in the above figure. The maximum key cap of the keyboard is 47.9°C on the left side of the keyboard, the temperature of WASD keypad is 45.6, and the direction key is 33.9. The left wrist rest is 34. 1, and the highest on the back is 55.3.

Generally speaking, the heat dissipation performance of Star 13 Air thin notebook is quite satisfactory, the core temperature is not high, and the surface high temperature area is well controlled, but the CPU core is obviously heated.

If we simply look at the CPU temperature, the heat dissipation of HP Star 13 Air can be said to be quite good, with a full load of only 72. 1, which is cooler than 95% of notebooks.

But in fact, the price of low core temperature is conservative performance release, and the power consumption of 15W at full load is only enough for business office use, so this computer is doomed to be unsuitable for users who value performance.

There are four aspects to judge the heat dissipation of a computer:

1, core temperature

This is the easiest and most important parameter to judge. If the core temperature is extremely high, the computer will even crash with a black screen, so when looking at the evaluation, the core temperature at full load is very important.

2. Performance release

Some chicken thief manufacturers will limit the release of core performance in order to avoid overheating at full load. Weak performance, the core heat is naturally low. Limited performance is very common in creative design computers.

3. Surface temperature

Some computers have low core temperature, but high surface temperature, so if you don't have an external keyboard, burning your fingers will also affect the user experience.

The surface temperature includes "high temperature value" and "high temperature zone", both of which need to be paid attention to.

4. Fan noise

Some manufacturers will use ultra-high speed fans to improve ventilation efficiency. The temperature is really well controlled and the performance is well released, but the noise will collapse.

When running under high load, the fan will inevitably have noise, but the computer with good heat dissipation has lower noise and smaller decibel value, while the computer with poor noise control has sharp noise and higher decibel value.

There are basically no perfect laptops for the above four points. Everyone can judge and choose the right model according to their own tolerance.

For example, when you are used to an external keyboard when using a computer, the surface temperature doesn't matter.

Or if you like to wear headphones when playing games, the noise will not affect you. (except living in dormitory)

For example, sending and receiving emails in an ordinary office, a weak performance release is enough.

In addition to the four points mentioned above, the heat dissipation judgment also includes many details such as "convenient maintenance" and "thickness", which can only be answered by more professional practitioners. I can only give you a brief description here.

In a word, heat dissipation design is a science. As long as the computer has good heat dissipation, it should be a good computer worth buying.