Comments on: Cyrix 486SLC CPU: Introduced April 13,1992 https://dfarq.homeip.net/cyrix-486slc-cpu-introduced-april-131992/?utm_source=rss&utm_medium=rss&utm_campaign=cyrix-486slc-cpu-introduced-april-131992 David L. Farquhar on technology old and new, computer security, and more Mon, 27 Apr 2026 20:51:41 +0000 hourly 1 By: neo https://dfarq.homeip.net/cyrix-486slc-cpu-introduced-april-131992/#comment-57642 Mon, 27 Apr 2026 20:51:41 +0000 https://dfarq.homeip.net/?p=40301#comment-57642 In reply to Dave Farquhar.

you can get them on ebay

some 286 to 486 used PLCC for i286 other used PGA for i286

btw Tandy 1000 used PLCC for i286

IBM PS2 used PGA for i286

]]> By: Dave Farquhar https://dfarq.homeip.net/cyrix-486slc-cpu-introduced-april-131992/#comment-57636 Sun, 26 Apr 2026 19:33:49 +0000 https://dfarq.homeip.net/?p=40301#comment-57636 In reply to neo.

I honestly don’t think the difference in performance is going to be enough in King’s Quest 3 to be worth the trouble or expense of a 486SLC upgrade, the game came out in 1986 when a 286 was a fairly high-end PC.

But I don’t know specifics. Every time I mention Tandy or Cyrix you ask me this question and I don’t have a 286-based Tandy 1000, nor do I have any experience with the CPU upgrade boards in them.

]]> By: neo https://dfarq.homeip.net/cyrix-486slc-cpu-introduced-april-131992/#comment-57621 Tue, 14 Apr 2026 06:41:07 +0000 https://dfarq.homeip.net/?p=40301#comment-57621 my first pc was a Tandy 1000sx and I sold it in 92. I’ve thought about getting a Tandy 1000 tx/tl from ebay and Cyrix 486SL 286 cpus upgrade

i want to play King Quest 3

]]> By: neo https://dfarq.homeip.net/cyrix-486slc-cpu-introduced-april-131992/#comment-57619 Mon, 13 Apr 2026 19:05:12 +0000 https://dfarq.homeip.net/?p=40301#comment-57619 The 486SLC was really more a 386SX

how does a Cyrix 486SLC 20mhz compare with a i386SX 20mhz in performance ?

is a Ever Green Cyrix 486SLC 20mhz a good upgrade to a Tandy 1000 286 8hz

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