小米CR6606拆机

Xiaomi CR6609 disassembly

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Xiaomi CR6609, about $20. CR6609 is a custom version, there is a model CR6608, also a custom version, I guess both hardware chip the same. Take it apart today and take a look! This one only the body, no power!

All black appearance.

小米CR6606拆机

The top shell is a hollow design, which is very beneficial to enhance heat dissipation, and the Redmi AX5 and AX6 are also designed in this way. But this design has advantages and disadvantages, the disadvantage is that when you accidentally splash water on the surface of the body, it may be broken!

小米CR6606拆机

Fuselage bottom label.小米CR6606拆机

Four Gigabit LAN ports on the back, 1WAN+3LAN.

 

小米CR6606拆机

Unpacking the housing.

小米CR6606拆机

A large piece of aluminum heat sink covers most of the motherboard.

小米CR6606拆机

The aluminum version is 3mm thick, Xiaomi has never been attentive to heat dissipation design, even for the carrier’s customized version is not sloppy, praise a.

小米CR6606拆机

Remove the heat sink.小米CR6606拆机

Heat sink with a small piece of EMI shielding foam with adhesive on one side.

小米CR6606拆机

No chip on the back of the motherboard, the antenna is welded to the motherboard, there is a very short, so this angle is the limit:

小米CR6606拆机

Removing the shield on the front of the motherboard, the memory and CPU have heat-conductive silicone pads.小米CR6606拆机

小米CR6606拆机

CPU model is MT7621AT, dual-core 880MHz, integrated five-port gigabit network port.

Below the CPU is the memory chip, model number is M15T2G16128A, capacity 256MB, DDR3.

To the right of the CPU is the flash memory chip, model number is F59L1G81MB, capacity 128MB.

小米CR6606拆机

The wireless chip is MT7905DAN+MT7975DN, forming “MT7915D”. 2.4G and 5G both support 2x2mimo, 2.4G maximum rate of 574Mbps, 5G maximum rate of 1201Mbps.

There is no external FEM chip.

小米CR6606拆机

DC power input circuit.

小米CR6606拆机

There is nothing else to see, so to this Xiaomi CR6609 disassembly is complete, the chip summary chart is as follows.

小米CR6606拆机

Xiaomi 4C in the downstairs D point measurement speed of more than 70Mbps, Xiaomi 11 on about 120Mbps, the speed is considered poor.

Standby power 5.9W, MT7975DN + MT7905DAN heat generation is considered large, but there is this large heat sink, plus the top cover has a skeleton heat sink holes, so this body heat appears small.

The three major chips of AX1800 program, BCM6755 standby power is the lowest, the least heat, usually i BCM program 5G is to have an independent FEM chip, the signal will be stronger than these MTK program without external FEM (signal and speed).

Qualcomm’s AX1800 is the best overall quality in the three major programs. From the heat and signal quality Qualcomm’s AX1800 is better than the other two.

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