| Cyrix |
487DLC |
Cx487DLC-33GP |
387 Socket (PGA 68) |
1 |
Seems to be the same as the FasMath |
| Cyrix |
87DLC |
Cx87DLC-40GP |
387 Socket (PGA 68) |
1 |
QFP chip on interposer, missing 2 pins |
| Cyrix |
Cx487 |
Cx487S-40QP |
486 Socket (PGA 168) |
1 |
Interposer for 486SX CPUs. Came with Cyrix Cx486 S40 FasCache. |
| Cyrix |
FasMath |
CX-83D87-33-GP |
387 Socket (PGA 68) |
1 |
|
| Cyrix |
FasMath |
CX-83D87-40-GP |
387 Socket (PGA 68) |
1 |
|
| IIT |
2C87 |
12 |
287 Socket (DIP 40) |
1 |
Similar to the 287-XL, a 387-class FPU in a 287 package. |
| IIT |
3C87 |
3C87-33 |
387 Socket (PGA 68) |
1 |
Brown package |
| IIT |
XC87DLC |
XC87LDC-33 |
387 Socket (PGA 68) |
1 |
Black package |
| Intel |
287 |
C80287XL |
287 Socket (DIP 40) |
1 |
Basically a 387 in 287 package. |
| Intel |
80287 |
D80287 |
287 Socket (DIP 40) |
1 |
|
| Intel |
i387 DX |
A80387DX |
387 Socket (PGA 68) |
1 |
|
| Intel |
RapidCad |
RapidCad-2 |
387 Socket (PGA 68) |
1 |
Technically not an FPU, enables the FPU on the RapidCad-1 chip. |
| ULSI |
Advanced Math Coprocessor DX / DLC |
US83C87 |
387 Socket (PGA 68) |
1 |
|
| ULSI |
Math•Co DX Advanced Math Coprocessor |
1003 |
387 Socket (PGA 68) |
2 |
|
| Weitek |
Abacus |
3167 020-GCU |
Weitek-compatible 387 (PGA-121) |
1 |
Rare, non-x87 FPU for 386-compatible systems. |
