@stallwoodj wrote:
But of course do note that unless you are using a GAiA that is Kernel 3.10, then only 4GB RAM is accessible to the operating system.
This is not accurate. Even kernel 2.4 could use PAE to recognize more than 4 GB at the OS level, though any single process couldn't use more than 2 GB. Kernel 2.6.18-92 can use up to 256 GB.
As for the broader question, a physical inspection of the DIMM slots is the only way to be sure. dmidecode basically prints the contents of a file. On a 2200 (which I currently use for my personal box), it reports a memory array (type 16) max capacity of 2 GB and the SO-DIMMs (type 17) report they're 800 MHz DDR2:
[Expert@DallasSA]# clish -c "show asset all" | grep Model
Model: Check Point 2200
CPU Model: Intel(R) Atom(TM) CPU D525
Disk Model: INTEL SSDSC2BA400G3
[Expert@DallasSA]# dmidecode -t 16
# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 2.6 present.
Handle 0x000D, DMI type 16, 15 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 2 GB
Error Information Handle: Not Provided
Number Of Devices: 2
[Expert@DallasSA]# dmidecode -t 17
# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 2.6 present.
Handle 0x000F, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x000D
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: SODIMM
Set: None
Locator: DIMM0
Bank Locator: BANK0
Type: DDR2
Type Detail: Synchronous
Speed: 800 MHz
Manufacturer: Manufacturer00
Serial Number: SerNum00
Asset Tag: AssetTagNum0
Part Number: ModulePartNumber00
Rank: Unknown
Handle 0x0011, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x000D
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: SODIMM
Set: None
Locator: DIMM1
Bank Locator: BANK1
Type: DDR2
Type Detail: Synchronous
Speed: 800 MHz
Manufacturer: Manufacturer01
Serial Number: SerNum01
Asset Tag: AssetTagNum1
Part Number: ModulePartNumber01
Rank: Unknown
The memory physically in the box is definitely DDR3, and I have 8 GB installed.
