[kwlug-disc] Cost of ancient vs. current CPU ...

[Khalid Baheyeldin]

>From another thread ...

On Sun, Jul 27, 2025 at 1:34 AM William Park via kwlug-disc <
kwlug-disc at kwlug.org> wrote:

>
> On 2025-07-26 17:46, Ronald Barnes via kwlug-disc wrote:
> > It's an ancient CPU and there has been no noticeable change in
> performance.
> >
> > CPU is AMD FX(tm)-8320 Eight-Core Processor, so yeah, ancient.  Works
> > just fine.
>
> Considering its power consumption, what's the break even point, if you
> buy a new computer? :-)  You know, I threw away all my old computers
> simply because I couldn't afford the electricity.
>

I ran similarly ancient CPUs until a few years ago. The driver for upgrading
was not power consumption. Rather, it was getting a more current mother
board, faster RAM, more CPU threads, ...etc.

The dollar cost of power consumption of the CPU itself would not be a huge
difference, at the individual level (vs. collectively, impact on the
environment
and so on).

Let us compare the two 'ancient' CPUs that are mentioned in that other
thread
(AMD FX-8320 and Phenom II X6 1090T vs. a current desktop CPU, an
<https://www.cpubenchmark.net/compare/1782vs393vs6029/AMD-FX-8320-Eight-Core-vs-AMD-Phenom-II-X6-1090T-vs-AMD-Ryzen-5-PRO-8600G>
AMD Ryzen 5 8600G
<https://www.cpubenchmark.net/compare/1782vs393vs6029/AMD-FX-8320-Eight-Core-vs-AMD-Phenom-II-X6-1090T-vs-AMD-Ryzen-5-PRO-8600G>
).

The TDP for the former two is 125W, and the latter is 65W.

If I plug in my cost for hydro ($0.11 before tax), and assume the desktop
is
powered 24/7 at 25% load (say it is a home server for example), the
difference
per YEAR is ... wait for it ... a whopping $14.48!

That is $1.2 per month, which is really negligible if dollar cost was the
only factor.
-- 
Khalid M. Baheyeldin
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