This article inspired me to look and see what this computer is. Apparently it is a "AMD Athlon(tm) II X2 250 Processor" from 2009. So 17 years old. It has 8 GB of DDR3 memory and runs at 3 GHz. It currently has OpenBSD on it, but at least one source thinks it could run Windows 10.
The fact that I didn't know any of this is what is significant here. At some point I stopped caring about this sort of thing. It really doesn't matter any more. Don't get my wrong, I am as nerdy as they come. My first computer was a wire wrapped 8080 based system. That was followed by an also wire wrapped 8086 based system of my own design I used for day to day computing tasks (it ran Forth). If someone like me can get to the point of not caring there is no real reason for anyone else to care.
65W TDP? Let's say we want to run a PC so we're switching to a newer low-end Ryzen with a 35W TDP and that that's a 30W difference for the whole system. Let's say we're running the system 24/7 and the CPU is pulling its full TDP constantly. Average US residential electricity price is $0.18/kWh.
In the UK, residential electricity tariffs are currently capped by the regulator at 27.69p per kWh, resulting in a total yearly cost of £72.77. Much higher than in the US, but still much cheaper than a new PC.
Yup. But from the OP, all the information we have is the CPU model, and the GP decided that was enough to say it should be thrown in the trash for power inefficiency, so I thought it was enough for some bad math.
(FWIW, searching for the CPU model brings up an old review where the full system they’re testing pulls 145W under some amount of load. While that’s not nothing, it’s also not outrageous for a desktop PC that does the desktop PC things you require of it.)
So $50/yr for 4 years gives you ~$150 with $50 extra for shipping or whatever, which gets you a decent Lenovo M700 Tiny with much better performance in both power and power consumption.
I guess. It's hardly an open-and-shut case of "throw your old computer away!" though, especially when this is a worst-case scenario of running a desktop computer at full blast 24/7 without it ever going into sleep mode or being turned off, and when you don't know what the user's needs are. Maybe a mini-PC with basically no expansion just won't really work for them?
Watts in TDP are not the same as watts in electricity, although they're both measures of energy.
TDP is a thermal measurement, it's how much heat energy your heatsink and fan need to be able to dissipate to keep the unit within operational temperatures. It does not directly correlate to the amount of electricity consumed in operation.
An interesting point. Some random measurement gets 49W idle[1] which is probably close enough. I don't constantly compile stuff or stream video. At my local electricity rate of $0.072/kWh that works out to $31USD/year.
New systems idle at something like 25 Watts according to a lazy search. So 49-25=24W. That works out to $15/year hypothetically saved by going to a newer system. But I live in a cold climate and the heating season is something like half the year. But I only pay something like half as much for gas heat as opposed to electric heat. So let's just knock a quarter off and end up with 15-(15/4)=$11.25USD hypothetically saved per year. I will leave it here as I don't know how much the hypothetical alternative computer would cost and, as already mentioned, I don't care.
Or C++. I buy fairly fast computers to compile stuff. Generally top of the line desktop hardware because Threadripper isn't as much better as it's more expensive (and annoying to cool!), so the next price point that makes sense is a highly clocked (because single thread also matters) Epyc for like 10k€.
I also do caching and distributed compilation with sccache.
I have two Phenom II x6 - same generation as Athlon II. One desktop and one server.
The server ran non-stop for the first 10 years. Motherboard, a 790, failed and upgraded to 880G. One memory stick failed, replaced by lifetime warranty (Kingston) but the pair I received was slower CL9-10-9 vs. 9-9-9 for the failed one. After 10 years my router and a rk3288 SBC took most of it's jobs. I moved most of the hard drives (7x 2GB Seagate ST2000DL and 1 spare) into a DAS (SATA RAID enclosure) connected directly to the router where they are still running. None failed. The server bacame an offline backup. I started it weekly to sync. Last week I replaced it with a rk3588 ITX board - not because it failed, but because I wanted to explore / play with the new ARM CPU.
The desktop is also still working. I bought it second-hand a few years after the first. It was used at least 4h every evening and at least 10h every weekend. I'm still using it right now. One HDD failed - it was a 120GB PATA Seagate from ~2004 IIRC. No data loss, it was in RAID1. One GPU failed, a GTS 250, upgraded to GTX 970, still working. I'm going to keep using it for at least 5 more years, possibly more. Firefox no longer supports Win7 and I'm in the process of migrating to Linux. Total Commander (I'm a user since Win31) and file associations are holding me back. xdg-open is... absolutely horrible.
The fact that I didn't know any of this is what is significant here. At some point I stopped caring about this sort of thing. It really doesn't matter any more. Don't get my wrong, I am as nerdy as they come. My first computer was a wire wrapped 8080 based system. That was followed by an also wire wrapped 8086 based system of my own design I used for day to day computing tasks (it ran Forth). If someone like me can get to the point of not caring there is no real reason for anyone else to care.