IBM 486

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IBM 486

Most of the IBM 486 CPUs were based on Intel and Cyrix 386 cores, which IBM extended with support for the 486 instruction set, wider busses and other features.

Features

  • 16 KB L1-Cache
  • no L2-Cache

Available Types and ThinkPads featuring them

Model/Freq. (MHz) FSB (MHz) FPU VCore (MHz) TDP (W) ThinkPad Models
486 DX4
100 33 ... ...
75 25 ... ...
Blue Lightning 486 DX2
80 40 ... ...
66 33 ... ...
50 25 ... ...
486 DX2
80 40 ... ... ...
66 33 ... ... ...
50 25 ... ... ...
Blue Lightning 486 BLX3
100 33 ... ... ...
75 25 ... ... ...
60 20 ... ... ...
45 15 ... ... ...
Blue Lightning 486 BLX2
66 33 ... ...
50 25 ... ... 510Cs
40 20 ... ...
30 15 ... ...
Blue Lightning 486 BLX - 0.8µm
33 33 3.3 ...
25 25 3.3 ...
20 20 3.3 ...
15 15 3.3 ...
486 DLC2
66 33 ... ... ...
486 DLC
33 33 ... ... ...
486 SLC2
80 40 3.3 ...
66 33 3.3 ... 340CSE
50 25 3.3 2.3 340CSE, 500, 555BJ, 720, 720C
40 20 3.3 1.7
32 16 3.3 ...
486 SLC
25 25 3.3 1.3 340
25 25 ... ... 550BJ, 700, 700C, 710T
20 20 3.3 1.0
20 20 ... ...
16 16 ... ...

Thermal Specifications

GCC Optimization Flags










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