I remember the following engines that were the best engine in the past
1)Genius
2)Fritz
3)Shredder
4)Rybka
5)Houdini
6)Stockfish
Looking at the ssdf I find
https://ssdf.bosjo.net/long.txt
89 Hiarcs 14 Athlon 1.2 GHz 3095 29 -29 560 55% 3059
96 Deep Rybka 3 Athlon 1.2 GHz 3068 36 -35 372 53% 3044
172 Shredder 7 UCI K6-2 450 MHz 2691 24 -24 834 43% 2742(best of 450MHz)
226 Fritz 5.32 64MB P200 MHz MMX 2501 13 -13 3023 38% 2589(best of 200MHz)
278 Genius 4 DOS 486/50-66 MHz 2271 23 -23 900 49% 2275(best of 486/50-66 MHz
The fact that Hiarc14 has a bigger rating than Rybka3 is a surpsise for me because I see different order in CCRL rating list and maybe the book help Hiarcs in the SSDF rating list
Rybka 3 64-bit 4CPU 3152 +10 −10 61.1% −84.6 42.3% 2615
HIARCS 14 4CPU 3084 +11 −11 42.9% +48.3 51.0% 1920