iPhone, Apple, and Smartphones
Friday, January 17, 2025
Wednesday, January 8, 2025
Fwd: Failure of Minisforum UM790 Pro
Mini computers have been really popular and many people think that traditional desktop PCs are on the way out. Instead, people will buy mini computers, laptops and tablets.
This is mostly because of Apple, which has released some very powerful small devices. Mini computers often use laptop parts, and the 'M' in Apple's M-chip series stands for "Mobile". Apple uses the same powerful processors in laptops and tablets.
AMD claimed that their Ryzen 9 7940hs is an M-chip killer. I knew that I wanted something like this, and I waited four years to get the right chip. It has twice the processing power of the M2 chip, and unlike Apple, the computer I bought has upgradeable storage and memory which they don't charge you a fortune for.
However, mine failed after 15 months. I'm not sure if it is fixable. The motherboard is custom to this computer, and might not be replaceable. However, I could buy the cheaper "barebones" model that lacks memory and storage, and transfer those from the broken computer.
The processor uses up to 55 watts under a full load, which is almost as much as a 60-watt lightbulb. I could feel the heat coming off of the computer, and I was concerned about this. Maybe a regular desktop would be easier to cool. (By the way, a competing mini-computer company overclocks the same processor and it uses 65 watts.)
Apple often uses less power to keep their computers cooler.
Minisforum is a Chinese company apparently in Hong Kong. Some might claim that this is typical Chinese-made quality, although everything is made in China.
I sent a complaint to Minisforum...
---------- Forwarded message ---------
From: John Coffey <john2001plus@gmail.com>
Date: Wed, Jan 8, 2025 at 2:09 PM
Subject: Failure of Minisforum UM790 Pro
To: <support@minisforum.com>
From: John Coffey <john2001plus@gmail.com>
Date: Wed, Jan 8, 2025 at 2:09 PM
Subject: Failure of Minisforum UM790 Pro
To: <support@minisforum.com>
Failure of Minisforum UM790 Pro.
I purchased a Minisforum UM790 Pro from Ali Express on August 22, 2023. It arrived in about five weeks. Because of circumstances in my life, I was not able to use it until late October 2023. The computer lasted less than 15 months.
I bought this computer because I wanted a powerful computer for chess analysis. It is five times faster than my other computer, and I often ran it at 100%.
I was a little concerned about the heat the computer produced. I could feel a steady stream of hot air coming from it. I thought that it would be okay because you have advertised it as having "Cold Wave 2.0". I assumed that the computer was capable of running at 100% for long periods.
This morning I was doing some intense chess analysis on the computer and it suddenly quit. I tried to power it back on, but it would not turn on. I disconnected and reconnected the power and it would not turn on. Five minutes after the initial failure I saw orange sparks like a tiny fire come from the left side. I could smell smoke. I disconnected the power.
To use an English expression, I assume that the computer is "fried." Other than doing intense chess analysis, I have not abused the computer in any way.
I am not sure if I can get this repaired. I don't know if the motherboard is replaceable or repairable.
I was hoping that you could advise me.
I am disappointed in the quality of the computer that it would fail this way. However, I am considering getting the less expensive barebones model and trying to transfer the memory and storage to the new computer.
Friday, December 20, 2024
Introducing the credit card sized Cardputer!!
https://youtube.com/shorts/bx4Mef6K23o?si=T0pCZ5QHuVPZLbyo
Our phones could be powerful computers. We just need easier ways to wirelessly access peripherals and cast to a screen. Or to another computer. Then your computer could be portable.
Our phones could be powerful computers. We just need easier ways to wirelessly access peripherals and cast to a screen. Or to another computer. Then your computer could be portable.
Saturday, November 9, 2024
Saturday, November 2, 2024
Sunday, October 27, 2024
Friday, September 20, 2024
Saturday, June 15, 2024
Monday, May 20, 2024
Wednesday, May 1, 2024
Saturday, April 20, 2024
Apple's Silicon Magic Is Over!
https://youtu.be/AOlXmv9EiPo?si=j_EAv_ahdgcmzEvI
Chips are reaching the physical limits of what is possible. According to a video I watched today, an experimental 1 nm process only has 1 atom per transistor. That doesn't sound right to me, but if true, then you can't go smaller than that.
There might still be some room for improvement, but smaller circuits tend to fail because quantum effects cause electrons to jump between circuits.
Someday computers might have circuits that use light instead of electricity, but right now the technology is not even close.
What would it mean if computers can't get much faster? If you need more computing power then you would need more chips, or bigger ones, that either way consume more energy.
However, it feels like computers are plenty powerful right now. It is not like the general public has a strong need for more powerful chips.
Apple already has good competition from AMD. My mini computer is twice as powerful as the Apple M2 chip.
Chips are reaching the physical limits of what is possible. According to a video I watched today, an experimental 1 nm process only has 1 atom per transistor. That doesn't sound right to me, but if true, then you can't go smaller than that.
There might still be some room for improvement, but smaller circuits tend to fail because quantum effects cause electrons to jump between circuits.
Someday computers might have circuits that use light instead of electricity, but right now the technology is not even close.
What would it mean if computers can't get much faster? If you need more computing power then you would need more chips, or bigger ones, that either way consume more energy.
However, it feels like computers are plenty powerful right now. It is not like the general public has a strong need for more powerful chips.
Apple already has good competition from AMD. My mini computer is twice as powerful as the Apple M2 chip.
Sunday, April 14, 2024
A Look Inside Apple's $130 USB-C Cable
https://www.youtube.com/watch?v=AD5aAd8Oy84
Apple sells things at a higher margin than other companies. Although this is a superior cable for data transmission, maybe competitors will offer comparable products.
Friday, March 15, 2024
Your Internet is Too Fast
https://www.youtube.com/watch?v=FwdDAZruMKk
It was costing me around $90 a month for gigabit Internet service. So I downgraded to 200 Mbit, for about $35 per month, and it is plenty fast for me.
Thursday, March 7, 2024
Saturday, February 24, 2024
Exciting Decade for Computer Chips
In the 2010s computers advanced at a snail's pace. Sometimes people got excited when chips were 10% faster from one year to the next.
However, this decade has been dramatically different and it has everything to do with the circuit sizes on those chips. My 2009 iMac that died had a 42-nanometer chip. My 2017 iMac has a 14-nanometer chip. My new mini-computer has a 4-nanometer chip and it is very powerful for something not much bigger than a Whopper sandwich.
In late 2019 both Microsoft and Sony released their latest generation of video game consoles using 7-nanometer chips. Since these have APUs with the graphics "card" built into the main processor, I wanted something like this in a computer. I waited almost 4 years to be able to get something similar in a mini-desktop PC.
These smaller circuits are not cheap to make The equipment to make them can cost billions. This is why Taiwan Semiconductor, which made the investment, is the number one manufacturer of these chips.
But it has resulted in a paradigm shift where people realize that they don't have to spend a fortune on graphics cards to play games. The APUs are not as good as a $1200 gaming PC, but they are good enough.
This also has resulted in hand-held gaming systems that are as powerful as a computer and can also be used as a computer when hooked up to a monitor, keyboard, and mouse.
Even the most recent iPhone can double as a gaming system.
Reportedly, Sony, Nintendo, and Microsoft are all coming out with more powerful gaming systems in the coming year. This has been an exciting decade for computer chips.
--
Best wishes,
John Coffey
Tuesday, February 20, 2024
Who The Hell Asked For A PS5 Pro?
I've been saying the same thing. I also bought a powerful mini-PC that can play games. All of this change, including the consoles and the handhelds, has happened because of AMD's new powerful energy-efficient chips. Intel has chips too, but they are not quite as good.
The PS5 and the XBox Series X consoles are 10.28 and 12 teraflop machines respectively. That is still a great deal of performance and you would have to spend a lot on a PC to match that.
Apple is also starting to push gaming on the most expensive iPhones.
I have no faith in Cloud Gaming, but this may eventually be the future where you can run triple-A games on any device with a screen.
Thursday, February 8, 2024
USB-C Tutorial for Everybody
The bottom line is that when buying a USB-C cable, make sure that it supports the data speed that you want. The same thing applies to power delivery for fast charging.
Friday, February 2, 2024
Using Apple Vision Pro: What It’s Actually Like!
I find this interesting. I can't imagine it being more than a novelty for now. For it to be anything more than a novelty, it is going to have to immerse you into another world.
Wednesday, January 17, 2024
Wednesday, January 3, 2024
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