Processor Board Matrix (90, 95)

Location of Type-Model Sticker
8590/9590 The ID sticker is on the lower right front corner of the case. 
8595/9585/9595 The ID sticker is right below the power switch on the front of the case. 

Using the System Programs (Refdisk or System Partition) 
   Go to the System Programs Main Menu and select Display revision levels (you might have to select More utilities first). Note the submodel code displayed on the screen. 

   Read the FRU number printed near the card-edge of the processor board. Look for a second label (marked P1 - PC) to the right of the front serial number of the system. The second label indicates that the processor board has been upgraded. 

Complex Type links take you to the page for that type.

Mod
Sub 
Mod 
90
Sub 
Mod 
95
Processor Board 
FRU / Description
Label
Type
n0n

64F0782 386DX-20 0KB L2
0
40X
 17
 12
 04G3884 386DX-20 64KB L2
 --
 0
0GX
2D
2C
 92F0049 486SX-20 [Pins 2-3]   1 
--
1
0GX
 2F
 2E
 92F0049 487SX-20 [Pins 1-2]   2
P4 1
0JX
11
14
 64F0201 486DX-25
P1
1
0KX
13
16
 64F0198 486DX-33
P2
1
0Mu
2B
2A
 92F0048 Upgrade 486DX-50   3
P3
1
0Ku 34
 35
 92F0145 Upgrade 486DX2-33/66  4

1
0HX
57
58
 92F0079 486SX-25  5
P5
2
0HX
59
5A
 92F0079 487SX-25  6 
P6
2
0LX
3F
40
 92F0161 486DX2-25/50
P7
2
0HX
5B
5C
 92F0079 486DX2-25/50  7
P8
2
0MX
29
28
 82G2484 486DX-50 
57F1597 486DX-50
P8
3
0NX *
43
42
 61G2343 486DX2-33/66  8
PB
4
0PX **
45
46
 52G9362 586-60  9
PC
4
0Qt  ** 45
 46
 71G6197 586-66  10
PE
 4
0QX **
45
46
 92F0120 586-66  9
PE
4
0YX **
45
46
 06H3739 586-90  9
--
4


1  92F0049 486SX-20 [Pins 2-3]. 486SX-20 processor
2  92F0049 487SX-20 [Pins 1-2]. 487SX-20 processor 
3  92F0048 Upgrade straight 486DX-50
4  92F0145 Upgrade 486DX2-33/66
5  92F0079 486SX-25
6  92F0079 487SX-25
7  92F0079 486DX2-25/50
8  Type 4 DX2-66 has 128KB L2 cache 
9  Type 4 Pentium have 256KB L2 cache
10 71G6197 586-66 Transitional Q [Suzie Q]

*    The Type 4 486DX2-66 ["N"] Sub Models are 43 [90] / 42 [95] / 44 [95A]
**  All Type 4 Pentiums share the same Sub Models, 45 [90] / 46 [95] / 47 [95A].

WBST fixed some errata.

0Ku Type 1 486DX2-33/66 [Flash based, probably for RAID systems].
0Mu Type 1 straight 486DX-50 that supports ECC. [single board 486DX-50]
0Qt  Type 4 transitional 586-66, PCB layout similar to 0PX, but a 66MHz variant.

9595 Main Page