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When I go through their mem configuration for the gateway 6400 I get this:
Upgrade Configuration for Gateway
Model: 6400 Server 933
System Specs
Type of system: Desktops/Servers
Bus Architecture: 32/64-bit PCI
Native OS: Windows NT/2000
CPU Type: 933MHz Intel Pentium III
System Memory
Standard Memory: 128 MB (removable)
Maximum Memory: 2 GB
Memory Expansion: 4 sockets
Description OEM Part No. 18004memory Part No. Price Order
64MB ECC Module n/a DN1372U/064/H3V $25.00 BUY
128MB ECC Module n/a DN1372U/128/H3V $59.00 BUY
256MB ECC Module n/a DN1372U/256/K3V $89.00 BUY
512MB ECC Module n/a DN1372U/512/L3V $299.00 BUY
Comments:
PC133 ECC SDRAM DIMMs