Mac mini: make an autopsy for organ transplants :)
Some time ago, on occasion, I purchased a Mac mini on a G4 (PPC) processor:
Approximately estimate the size by comparing it with a regular computer CD / DVD drive - Mac mini is only slightly larger.
Standard equipment (produced from July to October 2005):
')
Decipher:
CPU: PowerPC G4 1.42GHz
RAM: 512MB DDR
HDD: 80GB 2.5 "PATA
CD / DVD: Combo DVD + CD-RW PATA
Video: Radeon 9200 32MB DDR
Network: 10 / 100Mb Lan Card + 54Mb AirPort (WiFi) + BlueTooth
Ports: USB2.0 + IEEE1394
Having turned it in my hands, I decided that it would make a simple media center out of it (a simple one, because 1080p will not pull video, 720p is maximum), a file server (drive torrents, and use a buffer as a buffer), well, it will work for browsing the Internet. For these purposes, an 80GB hard drive is completely insufficient; a DVD disc does not write (only reads), and Mac OS X often works quite thoughtfully on 512MB of memory. Therefore, it was decided to upgrade it to the maximum as possible. Rustling over the bins and the Internet, I stopped at the following configuration (what has changed is highlighted in bold):
CPU: PowerPC G4 1.58GHz (by overclocking, since the processor is soldered to MP and there are some difficulties with the replacement :))
RAM: 1024MB DDR (this is the maximum that can be set)
HDD: 250GB 2.5 "PATA + external 500GB USB (internal can be replaced with 320GB or 500GB, but they are already quite expensive, and even this one at 250GB is significantly more expensive than its SATA counterparts)
CD / DVD: DVD-RW DL PATA
Video: Radeon 9200 32MB DDR
Network: 10 / 100Mb Lan Card + 54Mb AirPort (WiFi) + BlueTooth
Ports: USB2.0 + IEEE1394
Read more: I took the memory Hynix PC3200 1GB:
Winchester WD2500BEVE 5400rpm:
NEC AD-7640A slot-loading drive:
Let's get started First of all, we need to open it, which is somewhat nontrivial, since the lid is attached without a single nail on the internal latches. :) Video on its disassembly on the Internet in bulk, so this process did not take off, take a look at this action here, for example: http://www.youtube.com/watch?v=U2CExAXtnis
Everywhere it is recommended to use a spatula, or even two, but I didn’t have such an instrument at hand in an acceptable condition, so I had to use an ordinary kitchen knife (it should be big but thin). The autopsy itself took no more than 10 seconds.
There is no need to even describe the replacement of the memory, the hard drive and the drive, since it changes everything is trivial, which even surprised us a little - I expected great difficulties after hearing the stories of "experienced". :) At this stage, the tool will need only a small cross screwdriver. Here's how it looks (new hard drives and memory are already installed, but the drive is removed):
Well, and lastly from sports interest we will disperse this miracle. There is already a screwdriver can not do, you will need more soldering iron with a thin sting. We take out the motherboard from the case, having turned off the bolts in the corners, after removing the memory, the drive and the hard drive. Then, near the fastening of the cooler on the underside of M. P.
And unsolder the resistor under the number R351. Everything, overclocking is finished, got a frequency of 1.58GHz (there are other combinations by reference). But there is one caveat - the firmware does not know processors with a frequency higher than 1.5GHz and slightly pereslaves it - the processor in the drive is defined as 750MHz, which does not interfere with anything, with one small but not very pleasant exception - when reinstalling Mac OS X, y which the minimum requirements for the processor 867MHz, will have to either remove the overclocking, or install a patched distribution, or by installing the bypass restrictions through the command line. I had to use the first option, since I already learned about the other two later.
A small comparison of the speed before and after overclocking (benchmark at BOINC):
Before:
Measured floating point speed 903 million ops / sec
Measured integer speed 2759 million ops / sec
After:
Measured floating point speed 1019 million ops / sec
Measured integer speed 3068 million ops / sec
Well, that's all, I hope someone will be interesting and useful. :)
PS In the next series we will break the Samsung Q1 Ultra.
Approximately estimate the size by comparing it with a regular computer CD / DVD drive - Mac mini is only slightly larger.
Standard equipment (produced from July to October 2005):
')
Decipher:
CPU: PowerPC G4 1.42GHz
RAM: 512MB DDR
HDD: 80GB 2.5 "PATA
CD / DVD: Combo DVD + CD-RW PATA
Video: Radeon 9200 32MB DDR
Network: 10 / 100Mb Lan Card + 54Mb AirPort (WiFi) + BlueTooth
Ports: USB2.0 + IEEE1394
Having turned it in my hands, I decided that it would make a simple media center out of it (a simple one, because 1080p will not pull video, 720p is maximum), a file server (drive torrents, and use a buffer as a buffer), well, it will work for browsing the Internet. For these purposes, an 80GB hard drive is completely insufficient; a DVD disc does not write (only reads), and Mac OS X often works quite thoughtfully on 512MB of memory. Therefore, it was decided to upgrade it to the maximum as possible. Rustling over the bins and the Internet, I stopped at the following configuration (what has changed is highlighted in bold):
CPU: PowerPC G4 1.58GHz (by overclocking, since the processor is soldered to MP and there are some difficulties with the replacement :))
RAM: 1024MB DDR (this is the maximum that can be set)
HDD: 250GB 2.5 "PATA + external 500GB USB (internal can be replaced with 320GB or 500GB, but they are already quite expensive, and even this one at 250GB is significantly more expensive than its SATA counterparts)
CD / DVD: DVD-RW DL PATA
Video: Radeon 9200 32MB DDR
Network: 10 / 100Mb Lan Card + 54Mb AirPort (WiFi) + BlueTooth
Ports: USB2.0 + IEEE1394
Read more: I took the memory Hynix PC3200 1GB:
Winchester WD2500BEVE 5400rpm:
NEC AD-7640A slot-loading drive:
Let's get started First of all, we need to open it, which is somewhat nontrivial, since the lid is attached without a single nail on the internal latches. :) Video on its disassembly on the Internet in bulk, so this process did not take off, take a look at this action here, for example: http://www.youtube.com/watch?v=U2CExAXtnis
Everywhere it is recommended to use a spatula, or even two, but I didn’t have such an instrument at hand in an acceptable condition, so I had to use an ordinary kitchen knife (it should be big but thin). The autopsy itself took no more than 10 seconds.
There is no need to even describe the replacement of the memory, the hard drive and the drive, since it changes everything is trivial, which even surprised us a little - I expected great difficulties after hearing the stories of "experienced". :) At this stage, the tool will need only a small cross screwdriver. Here's how it looks (new hard drives and memory are already installed, but the drive is removed):
Well, and lastly from sports interest we will disperse this miracle. There is already a screwdriver can not do, you will need more soldering iron with a thin sting. We take out the motherboard from the case, having turned off the bolts in the corners, after removing the memory, the drive and the hard drive. Then, near the fastening of the cooler on the underside of M. P.
And unsolder the resistor under the number R351. Everything, overclocking is finished, got a frequency of 1.58GHz (there are other combinations by reference). But there is one caveat - the firmware does not know processors with a frequency higher than 1.5GHz and slightly pereslaves it - the processor in the drive is defined as 750MHz, which does not interfere with anything, with one small but not very pleasant exception - when reinstalling Mac OS X, y which the minimum requirements for the processor 867MHz, will have to either remove the overclocking, or install a patched distribution, or by installing the bypass restrictions through the command line. I had to use the first option, since I already learned about the other two later.
A small comparison of the speed before and after overclocking (benchmark at BOINC):
Before:
Measured floating point speed 903 million ops / sec
Measured integer speed 2759 million ops / sec
After:
Measured floating point speed 1019 million ops / sec
Measured integer speed 3068 million ops / sec
Well, that's all, I hope someone will be interesting and useful. :)
PS In the next series we will break the Samsung Q1 Ultra.
Source: https://habr.com/ru/post/63450/
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