WARNING: This information is provided "as is" with no warranty. Use at your own risk!
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872 Motherboard RAM Upgrade
| Caution |
Only authorized service personnel should upgrade the system. Anyone who wants to upgrade the system herself/himself should know about the dangers of ESD (Electro-Static Discharge) and the necessary precautions. Unknowingly zapping the components of the computer will void the warranty. |
The 872 motherboard has three DIMM sockets configured as three (0-2) banks. The upgrade memory is upgradeable to 384MB. The 168-pin DIMM sockets will accept 1Mbx64 (8MB), 2Mbx64 (16MB), 4Mbx64 (32MB), 8Mbx64 (64MB) and 16Mbx64 (128MB) SDRAM DIMMs with gold-plated contacts, operating voltage of 3.3V and an operating frequency of 66 or 100 MHz. Non-ECC (64-bit) and ECC (72-bit) SDRAM are both supported. This motherboard will accept either single or double sided DIMMs. Memory type, size, and speed can vary between sockets. This motherboard will not accept 36 bit DIMM modules (parity).
Note
- Processors with 100 MHz front-side bus should be paired only with 100 MHz SDRAM. Processors with 66 MHz front-side bus can be paired with either 66 MHz or 100 MHz SDRAM.
- PC100-compliant (100MHz) DIMMS should be used with any processor operating at 350MHz or faster.
The possible memory upgrade configurations are listed. They can be installed in any order :
| DIMM Type (Amount) |
DIMM Type (Amount) |
DIMM Type (Amount) |
Total System Memory |
| 1M X 64 (8 MB) |
Empty |
Empty |
8 MB |
| 1M X 64 (8 MB) |
1M X 64 (8 MB) |
Empty |
16 MB |
| 1M X 64 (8 MB) |
1M X 64 (8 MB) |
1M X 64 (8 MB) |
24 MB |
| 1M X 64 (8 MB) |
1M X 64 (8 MB) |
2M X 64 (16 MB) |
32 MB |
| 1M X 64 (8 MB) |
1M X 64 (8 MB) |
4M X 64 (32 MB) |
48 MB |
| 1M X 64 (8 MB) |
1M X 64 (8 MB) |
8M X 64 (64 MB) |
80 MB |
| 1M X 64 (8 MB) |
1M X 64 (8 MB) |
16M X 64 (128 MB) |
144 MB |
| 1M X 64 (8 MB) |
2M X 64 (16 MB) |
Empty |
24 MB |
| 1M X 64 (8 MB) |
2M X 64 (16 MB) |
1M X 64 (8 MB) |
32 MB |
| 1M X 64 (8 MB) |
2M X 64 (16 MB) |
2M X 64 (16 MB) |
40 MB |
| 1M X 64 (8 MB) |
2M X 64 (16 MB) |
4M X 64 (32 MB) |
56 MB |
| 1M X 64 (8 MB) |
2M X 64 (16 MB) |
8M X 64 (64 MB) |
88 MB |
| 1M X 64 (8 MB) |
2M X 64 (16 MB) |
16M X 64 (128 MB) |
158 MB |
| 1M X 64 (8 MB) |
4M X 64 (32 MB) |
Empty |
40MB |
| 1M X 64 (8 MB) |
4M X 64 (32 MB) |
1M X 64 (8 MB) |
48 MB |
| 1M X 64 (8 MB) |
4M X 64 (32 MB) |
2M X 64 (16 MB) |
56 MB |
| 1M X 64 (8 MB) |
4M X 64 (32 MB) |
4M X 64 (32 MB) |
72 MB |
| 1M X 64 (8 MB) |
4M X 64 (32 MB) |
8M X 64 (64 MB) |
104 MB |
| 1M X 64 (8 MB) |
4M X 64 (32 MB) |
16M X 64 (128 MB) |
168 MB |
| 1M X 64 (8 MB) |
8M X 64 (64 MB) |
Empty |
72 MB |
| 1M X 64 (8 MB) |
8M X 64 (64 MB) |
1M X 64 (8 MB) |
82 MB |
| 1M X 64 (8 MB) |
8M X 64 (64 MB) |
2M X 64 (16 MB) |
90 MB |
| 1M X 64 (8 MB) |
8M X 64 (64 MB) |
4M X 64 (32 MB) |
106 MB |
| 1M X 64 (8 MB) |
8M X 64 (64 MB) |
8M X 64 (64 MB) |
138 MB |
| 1M X 64 (8 MB) |
8M X 64 (64 MB) |
16M X 64 (128 MB) |
202MB |
| 1M X 64 (8 MB) |
16M X 64 (128 MB) |
Empty |
136 MB |
| 1M X 64 (8 MB) |
16M X 64 (128 MB) |
1M X 64 (8 MB) |
144 MB |
| 1M X 64 (8 MB) |
16M X 64 (128 MB) |
2M X 64 (16 MB) |
152 MB |
| 1M X 64 (8 MB) |
16M X 64 (128 MB) |
4M X 64 (32 MB) |
168 MB |
| 1M X 64 (8 MB) |
16M X 64 (128 MB) |
8M X 64 (64 MB) |
200 MB |
| 1M X 64 (8 MB) |
16M X 64 (128 MB) |
16M X 64 (128 MB) |
264 MB |
| 2M X 64 (16 MB) |
Empty |
Empty |
16 MB |
| 2M X 64 (16 MB) |
1M X 64 (8 MB) |
Empty |
24 MB |
| 2M X 64 (16 MB) |
1M X 64 (8 MB) |
1M X 64 (8 MB) |
32 MB |
| 2M X 64 (16 MB) |
1M X 64 (8 MB) |
2M X 64 (16 MB) |
40 MB |
| 2M X 64 (16 MB) |
1M X 64 (8 MB) |
4M X 64 (32 MB) |
56 MB |
| 2M X 64 (16 MB) |
1M X 64 (8 MB) |
8M X 64 (64 MB) |
88 MB |
| 2M X 64 (16 MB) |
1M X 64 (8 MB) |
16M X 64 (128 MB) |
152 MB |
| 2M X 64 (16 MB) |
2M X 64 (16 MB) |
Empty |
32 MB |
| 2M X 64 (16 MB) |
2M X 64 (16 MB) |
1M X 64 (8 MB) |
40 MB |
| 2M X 64 (16 MB) |
2M X 64 (16 MB) |
2M X 64 (16 MB) |
48 MB |
| 2M X 64 (16 MB) |
2M X 64 (16 MB) |
4M X 64 (32 MB) |
64 MB |
| 2M X 64 (16 MB) |
2M X 64 (16 MB) |
8M X 64 (64 MB) |
96 MB |
| 2M X 64 (16 MB) |
2M X 64 (16 MB) |
16M X 64 (128 MB) |
160 MB |
| 2M X 64 (16 MB) |
4M X 64 (32 MB) |
Empty |
48 MB |
| 2M X 64 (16 MB) |
4M X 64 (32 MB) |
1M X 64 (8 MB) |
56 MB |
| 2M X 64 (16 MB) |
4M X 64 (32 MB) |
2M X 64 (16 MB) |
64 MB |
| 2M X 64 (16 MB) |
4M X 64 (32 MB) |
4M X 64 (32 MB) |
80 MB |
| 2M X 64 (16 MB) |
4M X 64 (32 MB) |
8M X 64 (64 MB) |
112 MB |
| 2M X 64 (16 MB) |
4M X 64 (32 MB) |
16M X 64 (128 MB) |
176 MB |
| 2M X 64 (16 MB) |
8M X 64 (64 MB) |
Empty |
80 MB |
| 2M X 64 (16 MB) |
8M X 64 (64 MB) |
1M X 64 (8 MB) |
88 MB |
| 2M X 64 (16 MB) |
8M X 64 (64 MB) |
2M X 64 (16 MB) |
96 MB |
| 2M X 64 (16 MB) |
8M X 64 (64 MB) |
4M X 64 (32 MB) |
112 MB |
| 2M X 64 (16 MB) |
8M X 64 (64 MB) |
8M X 64 (64 MB) |
144 MB |
| 2M X 64 (16 MB) |
8M X 64 (64 MB) |
16M X 64 (128 MB) |
208 MB |
| 2M X 64 (16 MB) |
16M X 64 (128 MB) |
Empty |
144 MB |
| 2M X 64 (16 MB) |
16M X 64 (128 MB) |
1M X 64 (8 MB) |
152 MB |
| 2M X 64 (16 MB) |
16M X 64 (128 MB) |
2M X 64 (16 MB) |
160 MB |
| 2M X 64 (16 MB) |
16M X 64 (128 MB) |
4M X 64 (32 MB) |
176 MB |
| 2M X 64 (16 MB) |
16M X 64 (128 MB) |
8M X 64 (64 MB) |
208 MB |
| 2M X 64 (16 MB) |
16M X 64 (128 MB) |
16M X 64 (128 MB) |
272 MB |
| 4M X 64 (32 MB) |
Empty |
Empty |
32 MB |
| 4M X 64 (32 MB) |
1M X 64 (8 MB) |
Empty |
40 MB |
| 4M X 64 (32 MB) |
1M X 64 (8 MB) |
1M X 64 (8 MB) |
48 MB |
| 4M X 64 (32 MB) |
1M X 64 (8 MB) |
2M X 64 (16 MB) |
56 MB |
| 4M X 64 (32 MB) |
1M X 64 (8 MB) |
4M X 64 (32 MB) |
52 MB |
| 4M X 64 (32 MB) |
1M X 64 (8 MB) |
8M X 64 (64 MB) |
104 MB |
| 4M X 64 (32 MB) |
1M X 64 (8 MB) |
16M X 64 (128 MB) |
168 MB |
| 4M X 64 (32 MB) |
2M X 64 (16 MB) |
Empty |
48 MB |
| 4M X 64 (32 MB) |
2M X 64 (16 MB) |
1M X 64 (8 MB) |
56 MB |
| 4M X 64 (32 MB) |
2M X 64 (16 MB) |
2M X 64 (16 MB) |
64 MB |
| 4M X 64 (32 MB) |
2M X 64 (16 MB) |
4M X 64 (32 MB) |
80 MB |
| 4M X 64 (32 MB) |
2M X 64 (16 MB) |
8M X 64 (64 MB) |
112 MB |
| 4M X 64 (32 MB) |
2M X 64 (16 MB) |
16M X 64 (128 MB) |
176 MB |
| 4M X 64 (32 MB) |
4M X 64 (32 MB) |
Empty |
64 MB |
| 4M X 64 (32 MB) |
4M X 64 (32 MB) |
1M X 64 (8 MB) |
72 MB |
| 4M X 64 (32 MB) |
4M X 64 (32 MB) |
2M X 64 (16 MB) |
80 MB |
| 4M X 64 (32 MB) |
4M X 64 (32 MB) |
4M X 64 (32 MB) |
96 MB |
| 4M X 64 (32 MB) |
4M X 64 (32 MB) |
8M X 64 (64 MB) |
128 MB |
| 4M X 64 (32 MB) |
4M X 64 (32 MB) |
16M X 64 (128 MB) |
192 MB |
| 4M X 64 (32 MB) |
8M X 64 (64 MB) |
Empty |
96 MB |
| 4M X 64 (32 MB) |
8M X 64 (64 MB) |
1M X 64 (8 MB) |
104 MB |
| 4M X 64 (32 MB) |
8M X 64 (64 MB) |
2M X 64 (16 MB) |
112 MB |
| 4M X 64 (32 MB) |
8M X 64 (64 MB) |
4M X 64 (32 MB) |
128 MB |
| 4M X 64 (32 MB) |
8M X 64 (64 MB) |
8M X 64 (64 MB) |
160 MB |
| 4M X 64 (32 MB) |
8M X 64 (64 MB) |
16M X 64 (128 MB) |
224 MB |
| 4M X 64 (32 MB) |
16M X 64 (128 MB) |
Empty |
160 MB |
| 4M X 64 (32 MB) |
16M X 64 (128 MB) |
1M X 64 (8 MB) |
168 MB |
| 4M X 64 (32 MB) |
16M X 64 (128 MB) |
2M X 64 (16 MB) |
176 MB |
| 4M X 64 (32 MB) |
16M X 64 (128 MB) |
4M X 64 (32 MB) |
192 MB |
| 4M X 64 (32 MB) |
16M X 64 (128 MB) |
8M X 64 (64 MB) |
224 MB |
| 4M X 64 (32 MB) |
16M X 64 (128 MB) |
16M X 64 (128 MB) |
288 MB |
| 8M X 64 (64 MB) |
Empty |
Empty |
64 MB |
| 8M X 64 (64 MB) |
1M X 64 (8 MB) |
Empty |
72 MB |
| 8M X 64 (64 MB) |
1M X 64 (8 MB) |
1M X 64 (8 MB) |
80 MB |
| 8M X 64 (64 MB) |
1M X 64 (8 MB) |
2M X 64 (16 MB) |
88 MB |
| 8M X 64 (64 MB) |
1M X 64 (8 MB) |
4M X 64 (32 MB) |
104 MB |
| 8M X 64 (64 MB) |
1M X 64 (8 MB) |
8M X 64 (64 MB) |
136 MB |
| 8M X 64 (64 MB) |
1M X 64 (8 MB) |
16M X 64 (128 MB) |
200 MB |
| 8M X 64 (64 MB) |
2M X 64 (16 MB) |
Empty |
80 MB |
| 8M X 64 (64 MB) |
2M X 64 (16 MB) |
1M X 64 (8 MB) |
88 MB |
| 8M X 64 (64 MB) |
2M X 64 (16 MB) |
2M X 64 (16 MB) |
96 MB |
| 8M X 64 (64 MB) |
2M X 64 (16 MB) |
4M X 64 (32 MB) |
112 MB |
| 8M X 64 (64 MB) |
2M X 64 (16 MB) |
8M X 64 (64 MB) |
144 MB |
| 8M X 64 (64 MB) |
2M X 64 (16 MB) |
16M X 64 (128 MB) |
208 MB |
| 8M X 64 (64 MB) |
4M X 64 (32 MB) |
Empty |
96 MB |
| 8M X 64 (64 MB) |
4M X 64 (32 MB) |
1M X 64 (8 MB) |
104 MB |
| 8M X 64 (64 MB) |
4M X 64 (32 MB) |
2M X 64 (16 MB) |
116 MB |
| 8M X 64 (64 MB) |
4M X 64 (32 MB) |
4M X 64 (32 MB) |
128 MB |
| 8M X 64 (64 MB) |
4M X 64 (32 MB) |
8M X 64 (64 MB) |
160 MB |
| 8M X 64 (64 MB) |
4M X 64 (32 MB) |
16M X 64 (128 MB) |
224 MB |
| 8M X 64 (64 MB) |
8M X 64 (64 MB) |
Empty |
128 MB |
| 8M X 64 (64 MB) |
8M X 64 (64 MB) |
1M X 64 (8 MB) |
136 MB |
| 8M X 64 (64 MB) |
8M X 64 (64 MB) |
2M X 64 (16 MB) |
144 MB |
| 8M X 64 (64 MB) |
8M X 64 (64 MB) |
4M X 64 (32 MB) |
160 MB |
| 8M X 64 (64 MB) |
8M X 64 (64 MB) |
8M X 64 (64 MB) |
192 MB |
| 8M X 64 (64 MB) |
8M X 64 (64 MB) |
16M X 64 (128 MB) |
256 MB |
| 8M X 64 (64 MB) |
16M X 64 (128 MB) |
Empty |
192 MB |
| 8M X 64 (64 MB) |
16M X 64 (128 MB) |
1M X 64 (8 MB) |
200 MB |
| 8M X 64 (64 MB) |
16M X 64 (128 MB) |
2M X 64 (16 MB) |
208 MB |
| 8M X 64 (64 MB) |
16M X 64 (128 MB) |
4M X 64 (32 MB) |
224 MB |
| 8M X 64 (64 MB) |
16M X 64 (128 MB) |
8M X 64 (64 MB) |
256 MB |
| 8M X 64 (64 MB) |
16M X 64 (128 MB) |
16M X 64 (128 MB) |
320 MB |
| 16M X 64 (128 MB) |
Empty |
Empty |
128 MB |
| 16M X 64 (128 MB) |
1M X 64 (8 MB) |
Empty |
136 MB |
| 16M X 64 (128 MB) |
1M X 64 (8 MB) |
1M X 64 (8 MB) |
144 MB |
| 16M X 64 (128 MB) |
1M X 64 (8 MB) |
2M X 64 (16 MB) |
152 MB |
| 16M X 64 (128 MB) |
1M X 64 (8 MB) |
4M X 64 (32 MB) |
168 MB |
| 16M X 64 (128 MB) |
1M X 64 (8 MB) |
8M X 64 (64 MB) |
200 MB |
| 16M X 64 (128 MB) |
1M X 64 (8 MB) |
16M X 64 (128 MB) |
264 MB |
| 16M X 64 (128 MB) |
2M X 64 (16 MB) |
Empty |
144 |
| 16M X 64 (128 MB) |
2M X 64 (16 MB) |
1M X 64 (8 MB) |
152 MB |
| 16M X 64 (128 MB) |
2M X 64 (16 MB) |
2M X 64 (16 MB) |
160 MB |
| 16M X 64 (128 MB) |
2M X 64 (16 MB) |
4M X 64 (32 MB) |
176 MB |
| 16M X 64 (128 MB) |
2M X 64 (16 MB) |
8M X 64 (64 MB) |
208 MB |
| 16M X 64 (128 MB) |
2M X 64 (16 MB) |
16M X 64 (128 MB) |
272 MB |
| 16M X 64 (128 MB) |
4M X 64 (32 MB) |
Empty |
160 MB |
| 16M X 64 (128 MB) |
4M X 64 (32 MB) |
1M X 64 (8 MB) |
168 MB |
| 16M X 64 (128 MB) |
4M X 64 (32 MB) |
2M X 64 (16 MB) |
176 MB |
| 16M X 64 (128 MB) |
4M X 64 (32 MB) |
4M X 64 (32 MB) |
192 MB |
| 16M X 64 (128 MB) |
4M X 64 (32 MB) |
8M X 64 (64 MB) |
224 MB |
| 16M X 64 (128 MB) |
4M X 64 (32 MB) |
16M X 64 (128 MB) |
288 MB |
| 16M X 64 (128 MB) |
8M X 64 (64 MB) |
Empty |
192 MB |
| 16M X 64 (128 MB) |
8M X 64 (64 MB) |
1M X 64 (8 MB) |
200 MB |
| 16M X 64 (128 MB) |
8M X 64 (64 MB) |
2M X 64 (16 MB) |
208 MB |
| 16M X 64 (128 MB) |
8M X 64 (64 MB) |
4M X 64 (32 MB) |
224 MB |
| 16M X 64 (128 MB) |
8M X 64 (64 MB) |
8M X 64 (64 MB) |
256 MB |
| 16M X 64 (128 MB) |
8M X 64 (64 MB) |
16M X 64 (128 MB) |
320 MB |
| 16M X 64 (128 MB) |
16M X 64 (128 MB) |
Empty |
256 MB |
| 16M X 64 (128 MB) |
16M X 64 (128 MB) |
1M X 64 (8 MB) |
264 MB |
| 16M X 64 (128 MB) |
16M X 64 (128 MB) |
2M X 64 (16 MB) |
272 MB |
| 16M X 64 (128 MB) |
16M X 64 (128 MB) |
4M X 64 (32 MB) |
288 MB |
| 16M X 64 (128 MB) |
16M X 64 (128 MB) |
8M X 64 (64 MB) |
320 MB |
| 16M X 64 (128 MB) |
16M X 64 (128 MB) |
16M X 64 (128 MB) |
384 MB |
Installing DIMMs (BANK0, BANK1, BANK2)
The following is a procedure for installing DIMM modules into a DIMM socket.
Step 1:
Line up the DIMM module as illustrated in Figure 1, pin 1 is indicated by a small triangle on the motherboard. Insert the module straight into the socket. The DIMM module is keyed and can only be inserted one way.
Step 2:
Insure that the DIMM module is secure in the socket and snap the locking tabs located on both ends of the socket firmly into place as illustrated in Figure 1.
| Figure 1 |
 |
| Step 1 |
Step 2 |
Step3 |
Once the DIMM modules are installed, the system will display the correct amount of memory, since the system automatically detects the amount installed; there are no jumper settings for memory configuration. The memory should be enabled and fully functional.
