Tuesday, April 7, 2020



Electromagnetic radiation can warm tissue, but not enough to be noticeable.  I found out that microwave ovens don't actually contain 100% of the microwaves.  You can put your hand in front of the door and feel a slight warming.

Tuesday, March 3, 2020

Walmart's $250 laptop is AWESOME!

Because of new chips, people can get much more power on budget devices.  The processor benchmarks at 90% of my 2009 Core-i7 iMac, which is not bad.  The graphics are far superior.  There are few drawbacks, but just enough that a person might want to wait for next year's model or a cyber Monday sale.


On Walmart's website, this currently lists for $299.

Monday, December 30, 2019

Worst Console Launch Ever: Google Stadia -

Almost 30 years ago, one of my coworkers thought that the internet would get so advanced that we would be able to stream videogames, and we wouldn't need consoles.  I didn't think that this was realistic.  I still don't.  There is a huge advantage to having local hardware.  For $400 or $500, you can get a pretty good gaming experience from a box in your home.  It is going to be significantly better in 2020 with the next generation of consoles which are predicted to have about the same cost.


My 2017 iMac has slightly more powerful graphics than a Sony Playstation 4 Pro.  The latest tablets and phones are also powerful enough to make good gaming devices.

AMD has plans to introduce new APUs in 2020 and 2021.  This will make building a decent gaming computer cheaper, maybe costing $700 to $800.

Tuesday, December 10, 2019

Fast food apps

I have the Pizza Hut app on my iPhone, plus a few other fast food places. It is a good way to get coupons on the app. I'm signed up to get deals via email with Pizza Hut and a few other places. I got this Super Supreme at half off for barely over $9. Burger King has some of the best deals on the phone.

Best wishes,

John Coffey

Tuesday, November 19, 2019

Re: 2017 iMac freezes up

Multicore Benchmark on my laptop: ~3000

This is really good for a refurbished laptop that I paid $89 for.

Multicore Benchmark on my old iMac: ~5000

The latest $150 Amazon tablet also benchmarks at this. It is an amazing world we live in.

I still use this machine to analyze chess games and openings. Because the display tends to quit, I access the machine remotely.

Multicore Benchmark on my new iMac: ~8100

Ideally I would have built a new AMD machine and gotten up to 20000. However, I needed a Mac to do the work that I am now doing.

I am suspicious of the combo drive using an SSD as a buffer to the hard drive. If something went wrong there then it would definitely freeze the computer.

Best wishes,

John Coffey

Monday, November 18, 2019

2017 iMac freezes up

A few months ago I purchased a used 2017 iMac and installed Windows 10 on it. For the most part, this has been a great machine. However, there is now a problem. The computer will appear to run slow and then eventually freeze. This usually happens while using Google Chrome.

I am normally good at dealing with any kind of software problem that comes up, but this could be something going wrong with the hardware, like the RAM, the SSD, or some controller board. Hardware is mostly outside my area of expertise, although I did buy some new RAM chips that I have not yet installed. I could try taking out the old RAM chips and put in the new RAM chips and see if the problem persists.

On the software side maybe there is a virus, which seems unlikely because I have Norton which normally takes care of these things. It is possible there is a driver issue, but that also seems unlikely. I would not expect Google Chrome to be the problem, but I would not rule it out either. I could try a different web browser.

I need to reboot the computer into McIntosh mode and see if the problem happens again. If it does, then it is a hardware problem. However, if the problem goes away, then something is wrong in the Windows 10 world and I would consider erasing the Windows 10 partition and reinstalling the operating system, which is a time-consuming task.


Intel Could Take YEARS to Catch Up… - Ryzen 9 3950X Review

Monday, August 19, 2019

Samsung Galaxy A20 Review - Amazing Budget Android Phone $160-$200

Budget phones have gotten pretty powerful.  The CPU benchmark on this phone rivals my old desktop computer. When it comes to bencmarks, Apple is usually on top with their own custom CPU's, but Apple seems to want to soak their customers.  I think that I would be quite happy with this budget phone, which is plenty powerful.


Tuesday, July 23, 2019

GameStop Is Gonna Try Some Big Changes To Save Itself.


The Cortana at 1:12 is the funniest thing I have seen in a while. It has happened to me before.
As a result of this, I just tried to see if I could get Contana (on Windows 10) and Siri (on the iPhone) to talk to each other. The result was surprising and amusing. The conversation went like this: Me: "Hey Cortana!" Cortana: Beep. Me: "Hey Siri." Siri: Beep. Cortana: "Shirley you are not Siri-us." (Exactly like that!)  
Siri: "I am always serious."

Saturday, June 29, 2019

How many computers do we own?

Around 1984 there was an article with a prediction that went like this: "Someday you will throw away computers. Your house will be littered with them. You will get computers in cereal boxes." Thirty-five years ago, that day seemed like it would be pretty far off.

How exactly has this prediction faired? Well, how many computers do I own? Here is the list...

1. One of the more powerful computers in my home is my iPhone 6s+. It is a powerful computer masquerading as a phone.

2. I have an iPhone 6+ that mostly works, except for the wi-fi, which is why I don't use it anymore.

3. I have an iPhone 5 that is becoming obsolete, but it would still be functional. It only uses the AT&T type radio bands, which means that it could also work with some discount companies.

4. If I were to look really hard in my junk pile, I could find my old iPhone 3GS. It might still function as a phone, but nobody would want to use it.

5. I have an iPad 4. The only reason I bought it was because my iPad 2, which I loved, was stolen. However, I don't really have much of a need for it. The iPads were originally touted as book readers to compete with the Amazon Fire tablets, but I don't think that reading books on a full-size iPad is a great experience. You can do all the normal internet stuff with them, but I have plenty of devices that can do that. I think that my iPad is best used to play audiobooks.

6. About eight years ago I bought a Microsoft Tablet on a Black Friday sale for $200 because this seemed like a fantastic deal at the time. At the time, it probably was. However, this has been the most useless piece of crap that I own. One could use it to browse the internet and read email, but it is way out of date, and it was never very useful to begin with. It is less pleasant to hold than an iPad. I doubt that I can get any software for it.

7. I'm typing this on my late-2009 27" iMac. However, this computer has a number of problems, such as the display repeatedly shutting off. The computer has 4 major parts that have been identified by a technician as showing signs that they may fail in the near future, which makes the machine too costly to consider fixing. Even just dealing with the display problem is not really worth it.

8. Which is why, today, I bought a 2017 iMac, which is a significant upgrade from my old iMac. It will take at least a day for me to get all my software installed and working on the new machine.

9. A couple of years ago I was given a Raspberry PI 3, which is a very cheap small computer the size of a deck of cards. It can run Linux and do normal computer stuff, although it is not very powerful at all. However, I configured it to be a game emulation box that can be hooked up to my TV.

A new Raspberry PI 4 has just been released, and it is more powerful.

10. I own both a NES Classic Edition and a SNES Classic Edition. I used to sell these for profit because they are often hard to find. I plan on selling at least one of these. Both are game emulation boxes, and I have hacked one of them to play more games. I plan on hacking the other one as well.

I am also considering also getting a Sony PlayStation Classic. It is a more powerful system that has been discounted down to $30 and can also be hacked.

11. I bought an Arcade1up machine. This is a 3/4 scale arcade game that you assemble yourself. It is essentially an emulation box, and it comes with 12 classic arcade games.

12. Back in the early 2000s, I bought a joystick that can be hooked up to an old style TV and it plays 10 classic games. As a game system it is not particularly great, but I still occasionally use it because it does a great job with one game, which is Pole Position. I don't have anything else that can play this game.

13. I have an old Sega Genesis with some cartridges that I plan on selling. Thirty years ago the 68000 processor in the Genesis was considered a mainstream computer processor. I have seen really old mainframe computers that cost a fortune that used this processor. By the 1990s the 68000 processor was only really used in game systems.

14. I have a really old laptop that someone gave me. It is very slow, but I was able to use it to run chess tournaments. However, it recently stopped booting. It appears that the hard drive is corrupted. I thought that maybe I could fix it, but...

15. I was able to get a refurbished laptop very cheap that is vastly superior. This computer proved very helpful as a backup computer while my iMac was in the shop.

So technically my house is littered with computers, some of which I could easily throw away.

If you own a calculator, which I don't, it has either a 4-bit or an 8-bit processor inside. It is also a computer, although very limited.

As far as getting computers in cereal boxes, I saw a little handheld game that came in a 2007 cereal box. It was pretty primitive, probably using a 4-bit processor.

Best wishes,

John Coffey