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The Intel i487 SX Math Co-Processor - Disingenuous or Just Misunderstood?
Today I’m taking a look at a somewhat rare and misunderstood chip - Intel’s i487 SX. The i487 was marketed as a “math co-processor” to pair up with the 486 SX back in 1991. But as you’ll soon see, the i487 is not what it appears, and Intel’s somewhat disingenuous marketing led to a lot of confusion surrounding this chip. Join me today as I dig in give the i487 a try!
Previous Videos on the FIC 486-VC-HD Motherboard:
https://youtu.be/1M_qp5CE1DI?si=jdK3Q72Z9cuBS9G9
https://youtu.be/EuV37gbbvzs?si=8bUkMa4p1LWnRLAk
CPU Galaxy’s Site and YouTube Channel:
https://www.cpu-galaxy.at/Index.htm
https://www.youtube.com/c/cpugalaxy
If you'd like to support the channel, you can check out my Patreon page. My Patreon supporters get early access to my videos, exclusive behind the scenes content, previews and more.
My Patreon Page: https://www.patreon.com/vswitchzero
My Blog: https://vswitchzero.com/
Bluesky: https://bsky.app/profile/vswitchzero.com
Mastodon: https://bitbang.social/@vswitchzero
00:00 Introduction
00:29 Float Point and FPU Overview
01:31 The i387 vs 486 On-Die FPU
02:24 The i487’s Misleading Marketing
03:43 The Truth about the i487 SX
04:59 The FIC 486-VC-HD
05:28 A Closer Look at the i487 SX
06:02 Pinout Differences
07:50 Installing the i487 SX
09:12 The 487’s Overdrive Successor
10:06 Power and Heat
10:32 Testing and Games
12:18 Overclocking
12:39 Conclusion
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By Today I’m taking a look at a somewhat rare and misunderstood chip - Intel’s i487 SX. The i487 was marketed as a “math co-processor” to pair up with the 486 SX back in 1991. But as you’ll soon see, the i487 is not what it appears, and Intel’s somewhat disingenuous marketing led to a lot of confusion surrounding this chip. Join me today as I dig in give the i487 a try!
Previous Videos on the FIC 486-VC-HD Motherboard:
https://youtu.be/1M_qp5CE1DI?si=jdK3Q72Z9cuBS9G9
https://youtu.be/EuV37gbbvzs?si=8bUkMa4p1LWnRLAk
CPU Galaxy’s Site and YouTube Channel:
https://www.cpu-galaxy.at/Index.htm
https://www.youtube.com/c/cpugalaxy
If you'd like to support the channel, you can check out my Patreon page. My Patreon supporters get early access to my videos, exclusive behind the scenes content, previews and more.
My Patreon Page: https://www.patreon.com/vswitchzero
My Blog: https://vswitchzero.com/
Bluesky: https://bsky.app/profile/vswitchzero.com
Mastodon: https://bitbang.social/@vswitchzero
00:00 Introduction
00:29 Float Point and FPU Overview
01:31 The i387 vs 486 On-Die FPU
02:24 The i487’s Misleading Marketing
03:43 The Truth about the i487 SX
04:59 The FIC 486-VC-HD
05:28 A Closer Look at the i487 SX
06:02 Pinout Differences
07:50 Installing the i487 SX
09:12 The 487’s Overdrive Successor
10:06 Power and Heat
10:32 Testing and Games
12:18 Overclocking
12:39 Conclusion