Over/Underclocking the Am5x86 (AMD 486). Insane results, IBM-XT(8088) to Pentium Performance Levels!

Описание: Yeah, it is time for some Overclocking / Underclocking fun with:
My heavily modded Soyo 4SAW2 M/B (SIS 85C496).
A few Am5x86 CPUs (These are the last 486 CPUs from AMD).
Lots of PCI VGA cards.
Additionally this video is a mini review optimization guide on this M/B.

This machine now covers a crazy amount of performance span.
You can basically run everything form the very first IBM-XT (8088)...
games to early Pentium optimized 3D / Glide games. #486quakerace

Clarification:
The de-turbo function here probably does not actually halve the clock.
This is a complicated topic. The chip-set most likely idles the bus for 2/3 of the time.
In the end the result is very similar. I run lots of benches to verify.
In general the slow down was 20-50%. But most did exactly -50%.

CPU Galaxy's Am5x86 overclocking record Video:
   • AMD X5-133 OC to 200 MHz & Peltier Cooling...  

Benchmark results:
https://docs.google.com/spreadsheets/...

Speed sensitive IBM PC-XT games:
https://drive.google.com/file/d/14bnG...

-- TIMESTAMPS --
00:23 - Intro
04:00 - The Motherboard, Caches and RAM.
06:58 - Interesting Jumpers.
09:11 - The rest of the Hardware, VGA Cards.
13:57 - Bios Settings.
19:56 - Overclocking Results.
26:55 - All results, Comparisons.
30:12 - Underclocking Results.
39:47 - Outro

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