Talk about the difficulty of disassembling notebook computers.
Students who often read pens can always read one sentence:"It is not difficult to disassemble this computer. You can remove the back cover by removing the bottom screws."
To be honest, this passage is copied and pasted every time.
Because in my opinion, disassembly pays attention to a "logic", and the disassembly logic of most notebook computers isremove a screw→Open the back cover→See the heat pipe fanAll of you here find it difficult because the buckle on the bottom cover is easy to break during the process of opening the cover.
To be honest, it’s okay for most computers to break their buckles.
So in my eyes, what does a notebook computer that is really difficult to disassemble look like?
Today, we will simply analyze it with a typical product:
ALIENWARE M15 R4
Left sliding interface
Left side of fuselage
Right side of fuselage
Rear fuselage
Its configuration is as follows:
I7-10870H processor
RTX3080 8GB discrete graphics card (125~140W)
32GB memory
1TB solid state drive
15.6 inch 1080p resolution 100%sRGB color gamut 300Hz refresh rate IPS screen
17.9~20mm thick
The fuselage weighs 2.28kg
The adapter weighs 912g.
The current price is 31,999 yuan.
Its advantages and disadvantages are as follows:
Advantages!
1, 140W power consumption RTX3080 into the 20mm fuselage, more radical.
2. The hard disk has strong expansibility and is equipped with three M.2 slots (dual 2280+2230).
3, A/C magnesium alloy material, excellent workmanship of the whole machine.
Disadvantages!
1, shielding the nuclear display, affecting endurance (144Hz version is not shielded)
2, there is no numeric keypad.
3, expensive, the average person can’t afford it.
[Upgrade suggestion]
It is difficult to disassemble this notebook computer, because its motherboard is upside down, so only a solid-state hard disk can be added to the cover after disassembly. If you want to clean the dust and replace the silicone grease, you need to disassemble the motherboard as a whole to remove the heat dissipation module.
In addition, the tail is fixed with a separate screw, so attention should be paid when disassembling.
Dual-channel 32GB memory can meet the needs of most purposes. The memory is onboard and cannot be replaced.
The SSD is a 1TB SN730, which supports PCIe 3.0×4 and NVMe.
The machine comes with three M.2 slots, one of which is 2230. If necessary, you can add or replace the solid-state hard disk by yourself.
[Purchase suggestion]
1, the after-sales service has high requirements.
2. It requires high performance and fuselage thickness.
3, Gao Liang’s children
The biggest feature of ALIENWARE M15 R4 is that it is expensive, probably because we knew the price relationship before we got it. The whole machine is designed to feel very advanced, the metal shell is excellent in workmanship and the body thickness is very thin.
Screen aspectThe measured color gamut volume is 106.6%sRGB, the color gamut covers 99.6%sRGB, the average △E is 1.52, and the maximum △E is 2.97. Although the refresh rate of 300Hz is the highest, the resolution is still 1080p, and there is no popular 2K screen.
Noise aspectIts full-load decibel value is 50.8dB, and it is 57.7dB when it is turned on at full speed. It is recommended to turn on the balanced mode at ordinary times.
After-salesALIENWARE has always been the benchmark in the game book. Even in case of screen breakage, water intrusion and other accidents, it can be directly guaranteed. In most cities across the country, you can enjoy the next-day door-to-door service and support global warranty.
Specific policies can be seen in official website, so I won’t go into details here.
The purchase suggestion of ALIENWARE M15 R4 is very simple. You can consider it if you have money. It has excellent workmanship and high-grade brand, and it is a game book that conforms to the status of rich people.
But if you want the ultimate performance release, then this kind of thin game is not suitable for you.
【 Conclusion of Conscience of Pig King 】
The above picture shows the disassembly of ALIENWARE M15 R4, which is a combination of four heat pipes and two fans.
It can be seen that this disassembly diagram only has internal components, and there is no so-called"fuselage shell"That’s because the motherboard is upside down, and we have to remove all the components before we can turn it over to see the heat dissipation specifications of the fuselage.
Room temperature 25℃
Reflectivity 1.00
BIOS version: 1.2.0
Turn on the performance mode. Under full load, the CPU temperature is up to 104℃, stable at 86℃, power consumption is 27W, and the frequency is maintained at 2.2GHz.
The maximum temperature of the graphics card is 81℃, the power consumption is about 135W, and the frequency is 1635MHz.
At the beginning of double baking, the CPU power consumption was as high as 105W and the temperature was 100℃. After a period of time, it was controlled by DPTF, and PL1 decreased and dynamically adjusted until the temperature was below 100℃.
With the double baking, the CPU temperature reached 100℃ again, and PL1 decreased again until 27W was stable.
The graphics card is limited by the temperature wall of 82℃, even if the CPU power consumption is only 27W, it can not maintain the maximum of 140W W.
When the full-speed mode is turned on, M15 R4 can maintain 62W+125W, and the CPU still maintains 100℃.
The surface temperature is as shown in the above figure. The maximum temperature of the keyboard key cap is 47.3℃, the WASD key position area is around 40℃, and the direction key is 32.8℃. The temperature of the left wrist rest is 30.2℃.
Generally speaking, the heat dissipation performance of ALIENWARE M15 R4 is not bad. If it is measured by the requirement of "full blood", it must be mediocre, but this machine is only 17.9~20mm thick, which is very strong.
What is it?"motherboard upside down"Design?
The above picture shows the laptop with the back cover uncovered after the "motherboard upside down" design. You can’t see the main components such as heat pipes because they are hidden on the back.
Today, our protagonist ALIENWARE M15 R4 is the same. When the back cover is disassembled, it can’t complete the operations such as changing silicone grease, but can only carry out simple cleaning and maintenance. This is the shortcoming of the "motherboard upside down" design.
Why does the manufacturer adopt the "motherboard flip-chip" design?
Because "motherboard inversion" can keep the CPU/ graphics card and other heating components as far away from the keyboard surface as possible, thus reducing the C-surface temperature of the notebook computer under high load. (the temperature on surface D will rise accordingly)
For thin notebook computers, they will consider the design of "motherboard upside down", because the machine is very thin, and if it is not upside down, the keyboard will be particularly hot under high load.
After flip-chip, the core is farther away from the keyboard, and the space is larger, so it can be insulated, and the keyboard temperature can be controlled under high load.
In my opinion, "motherboard inversion" increases the difficulty of disassembling, but for ordinary consumers, they generally don’t try to disassemble and maintain, especially for high-end products. Most consumers will choose to hand over their computers to after-sales for heat dissipation maintenance, so it doesn’t matter whether they are inverted or not.
However, if you are a computer hardware enthusiast and like to disassemble and toss hardware, you must be careful of this kind of "motherboard upside down" computer, and the probability of disassembling tragedy is much higher than that of ordinary products.