derSammler wrote:
Are you aware that this CPU was also officially sold as Am486DX5-133? It was even written on some chips. 5x86 was just a marketing name.
Ok derSammler, due to the relatively large request to consider the 133, but considering also the "aesthetic" requirement mentioned above (gotta read 486 on the chip rather than 5x86), I'll put back the AM486DX5-133 in the list of possible candidates, which now are:
• AMD Enhanced AM486 DX4-120 WB
• AMD AM486 DX5-133**
**Only specimens with written 486 on the chip, and only if the L1 cache is Write-Back
Now, given this "new entry" in the context, my questions above become even more pressing, which I propose again:
In your opinion, would the additional 13 MHz of the 5x86-133 CPU be worth the 7-MHz lowered speed on everything else (BUS, PCI cards and subsequently video card, RAM, L2 cache, EIDE, etc.) and the greater speed gap/unbalance between CPU (133) and the rest of the system (33) if compared with a seemingly more balanced 120 (CPU) / 40 (system)?
Would any difference in performances (not just purely isolated CPU benchmarks) be detectable?
Because the purpose of my context is to identify the fastest 486 possible in overall performance, not only in isolated CPU speed.
Just a recap for new-visitors:
• No 5s in the name (5x86 and similar), just a pure 486 (aesthetically too!)
• No overclocks
• No weird adapters/Evergreen overdrives, etc., just the plain 486 CPU (but it is allowed to move between brands, Intel, AMD, Cyrix, IBM, etc.)
• Pure MS-DOS based (meaning, 6.22 at the latest), which means it has to work with apps, games, drivers, etc. So, forget very late SCSI320 and SCSI640, forget very late video cards...
Fastest pure natural real authentic 486 possible on the planet... go ahead! (then of course I'll post my proposed theoretical configuration...)
NOTE: In case of DX4-120, the motherboard would be Biostar MB-8433UUD, as it can certainly set the PCI bus @ 40 MHz
They said therefore to him: Who are you?
Jesus said to them: The beginning, who also speak unto you