AMD Am486 DX40

This is not the chip that people hoped it would be. AMD's 40MHz 386 ran very well and was quite fast for a 386 because the front-side-bus (FSB) did its job at 40MHz as well. The 486 model, however, was usually plugged into a normal motherboard with Vesa Local Bus (VLB) slots. These slots ran fine at 25MHz or 33MHz but often caused problems when running at 40MHz or even 50MHz. Because of this the 40MHz part was less common.

Specifications

Core / Codename
Clockfrequency
40MHz
Front Side Bus
40MHz
Multiplier
1x
vCore
5V
L1 cache
8KB
L2 cache
None
sSpec
24361
Chip date
9403
Stepping
?
Socket
Transistor count
1.2M?
Condition
CPU only
Engineering sample?
No

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