YouTuber who bought up the price jumps up at the high end and modifies it by himself, making it cheaper and more performance than the regular item

Generally Apple products are difficult to remodel by themselves · It is thought that it can not be done, but by opening the main body of the 27-inch iMac 5K Retina display and upgrading the processor, memory, SSD it is equivalent to the upper model YouTuber's challenge that it raised it to the above performance and further restrained the total amount including the remodeling cost as low as about 200,000 yen has been released.

YouTuber upgrades base-model 5K iMac with seventh-gen Intel Core i7 processor, 64 GB of RAM, and more [Video] | 9to5Mac
https://9to5mac.com/2017/07/17/imac-upgrade-i7-64gb-ram-youtuber/

It was Quinto Nelson of YouTuber who is working on the YouTube channel name "Snazzy Labs" that remodeled the iMac. I purchase a basic grade model of the 27-inch iMac Retina 5K display model for $ 1,799 (19,800 yen in the Japanese store), and I release a movie showing how to replace CPU and memory by myself.

The Best 2017 iMac Apple Does not Sell! - YouTube


Mr. Nelson's movie starts with content similar to the complaint that "Apple's high-end products are too expensive". But by adding your own hand to the cheapest model ......


What, it cost $ 1848 (about 200,000 yen) at a cheap total cost, and I got the performance exceeding the high-end model.


What I prepared was Intel's i7-7700K processor ......


Crucial SSD MX 300 2TB model.


And 64 GB of memory. It is Nelson who leaks as "a little overloaded", but it seems to be an exchange to meet the same specification as the high-end model to the last.


In addition to these parts, the combined price of double-sided tape for reassembly and cable for SSD is 3471 dollars (about 390,000 yen). Although it reaches approximately 1,700 dollars (about 190,000 yen) only by parts cost, it can still be said to be "cheap" compared to iMac's 5K Retina display model which reaches nearly 600,000 yen.


Mr. Nelson used the decomposition group · a number of decomposition tools developed by iFixit. For example, this tool has a disk shape with its tip rotating ... ...


By sliding it between the display and the chassis, you can disassemble it without damaging it even if there are cables etc.


After peeling off a powerful double-sided tape fixing the display panel ......


This time decomposition of contents. Remove the left speaker unit, then remove the power supply unit.


At this time, touching the terminal may cause electric shock, so be careful.


Right side speaker, cooling fan and one after another disassembled ... ....


Remove the cooling unit of the processor.


And detach the processor.


I put the Intel i7-7700K processor that I prepared here.


Install the processor, grease and reinstall the cooling unit.


At this timing, cable for extension of SSD is made to crawl.


Then fix the additional SSD to the bracket. This time I left the original drive as it is, I decided to separately add 2 TB SSD.


In the case of iMac, the rotation speed of the cooling fan is controlled by detecting the temperature of the drive with a dedicated temperature sensor. The sensor can be purchased online.


Two-sided tape for replacement is also available.


Reattach the panel with a new double-sided tape.


Then, with remodeling completed by installing 64 GB of memory.


As a result of measuring the benchmark with this model, Geekbench 4 Multi-Core marked higher numerical value than genuine iMac (2017 model).


In Cinebench R15 CPU, although it did not match the monster machine "FrankenMac Pro" made by Mr. Nelson himself, he is still recording the performance exceeding the original iMac. Mr. Nelson says, "Probably, Apple buys a processor from Intel, is not it cheap to purchase low-performance on the same CPU?"


It is a DIY iMac that showed excellent performance, but Mr. Nelson raised two disadvantages.


One of them, of course, will not be able to take Apple's support. However, thinking that I do not think it is a problem if I think that the same performance can be obtained cheaply as much as 200,000 yen.


Another point is that it was not able to improve graphic performance.


However, at benchmark DIY iMac showed good results. In both Bruce X and the original benchmark, both showed a performance that is 5% higher than that of a genuine high-end machine, and all of them analyzed that arithmetic is dependent on CPU type.