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Here is a list of the serial numbers and sizes of Nand Flash Memory chips currently offered by Samsung and Hynix as displayed on their web sites.

Samsung

K9F1G08R0A (1GigaBit) = 128MB

K9F1G08U0A (1GigaBit) = 128MB

K9K2G08R0A (2GigaBit) = 256MB

K9F2G08R0A (2GigaBit) = 256MB

K9F2G08U0A (2GigaBit) = 256MB

K9K2G08U1A (2GigaBit) = 256MB

K9K2G08U0A (2GigaBit) = 256MB

K9F2G08U0M (2GigaBit) = 256MB

K9F4G08U0A (4GigaBit) = 512MB

K9K4G08U1M (4GigaBit) = 512MB

K9K4G08U0M (4GigaBit) = 512MB

K9F4G08U0M (4GigaBit) = 512MB

K9K8G08U1A (8GigaBit) = 1GB

K9K8G08U0A (8GigaBit) = 1GB

K9K8G08U1M (8GigaBit) = 1GB

K9K8G08U0M (8GigaBit) = 1GB

K9W8G08U1M (8GigaBit) = 1GB

K9L8G08U0M (8GigaBit) = 1GB

K9WAG08U1A (16GigaBit) = 2GB

K9WAG08U1M (16GigaBit) = 2GB

K9NBG08U5A (32GigaBit = 4GB)

K9NBG08U5M (32GigaBit = 4GB)



Hynix

HY27UF081G2A (1GigaBit) = 128MB

HY27UF161G2A (1GigaBit) = 128MB

HY27UFO81G2M (1GigaBit) = 128MB

HY27USO8281A (1GigaBit) = 128MB

HY27UF082G2A (2GigaBit) = 256MB

HY27USO8561A (2GigaBit) = 256MB

HY27UF162G2A (2GigaBit) = 256MB

HY27UF082G2M (2GigaBit) = 256MB

HY27UF084G2M (4GigaBit) = 512MB

HY27USO8121A (4GigaBit) = 512MB

HY27UG088G5M (8GigaBit) = 1GB

HY27UG088GDM (8GigaBit) = 1GB

HY27UFO81G2A (8GigaBit) = 1GB

HY27UFO61G2A (8GigaBit) = 1GB

HY27UH08AG5M (16GigaBit) = 2GB

HY27UH08AGDM (16GigaBit) = 2GB

Not all serials are listed but the following will apply to all chips:

On Samsung chips the 4th & 5th characters denote the memory denstiy as follows:

K9X1GXXXXX = 1 Gigabit or 128MB
K9X2GXXXXX = 2 Gigabit or 256MB
K9X4GXXXXX = 4 Gigabit or 512MB
K9X8GXXXXX = 8 Gigabit or 1GB
K9XAGXXXXX = 16 Gigabit or 2GB
K9XBGXXXXX = 32 Gigabit or 4GB

On Hynix Chips the 9th and 10th characters denote the memory density as follows:

HYXXXXXX1GXX = 1 Gigabit or 128MB
HYXXXXXX2GXX = 2 Gigabit or 256MB
HYXXXXXX4GXX = 4 Gigabit or 512MB
HYXXXXXX8GXX = 8 Gigabit or 1GB
HYXXXXXXAGXX = 16 Gigabit or 2GB
HYXXXXXXBGXX = 32 Gigabit or 4GB