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  Intel A80486DX4-100 [flip chip]   []   []   [hide data]   [close image viewer]  
Comment by Paul Collins (pi314aussie[at]
When this chip was the latest and greatest new kid on the block, I upgraded from my then 486 33MHz system. I had to replace my then M/Board, as it didn't support "ANY" clock-multiplier CPUs. see comment for A80486DX2-66.
Within months of having my new speed, the AMD 5x86 and Cyrix 5x86 came on sale. The AMD was a clock-quadrupler. The Cyrix was still a clock-tripler, but advanced 5th generation style. Maybe the AMD should be more rightly called an AM486DX5-133, since inside it is still identical to all other 486's. My brand new M/Board's BIOS didn't know these two new chips, so I bought the AMD -133 chip and got a BIOS update at the same time. The AMD behaved unreliably in my system, so I exchanged it with the shop for the Cyrix. (The BIOS update included both). So to end my story, I only got about two-months use from this Intel A80486DX4-100 CPU. N.B. It is nearly a decade later, and I'm still using Cyix 5x86 CPU's.

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Core Frequency:100 MHz
Board Frequency:33 MHz
Clock Multiplier:3.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.60
Voltage:3 V
Introduced:March 7, 1994
Manufactured:week 19/1994
L1 Cache:8 KB
CPU Code:i486 DX4
Intel S-Spec: SX900
Package Type:Ceramic
Socket: 1/2/3
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