Product Description
Hynix (SK Hynix) 8GB DDR3 ECC Registered RDIMM – 1Rx4 Organization
This Hynix HMT31GR7CFR4C-PBT8AD is an 8GB DDR3 server memory module with ECC. Featuring a 1Rx4 (Single Rank, x4) organization, it is designed for servers that benefit from single-rank modules to maximize the number of DIMMs populated per memory channel, optimizing performance and capacity in legacy 1U and 2U systems.
Key Specifications:
-
Capacity: 8GB
-
Type: DDR3 SDRAM with ECC
-
Speed: 1333 MHz (PC3-10600R)
-
Voltage: 1.5V
-
Module Type: 240-pin ECC Registered DIMM (RDIMM)
-
Organization: 1Rx4 (Single Rank, x4)
-
Part Number: HMT31GR7CFR4C-PBT8AD
Compatibility & Applications:
-
Target Systems: Commonly used in servers like Dell PowerEdge R610/R710, HP ProLiant DL360 G7/G8, IBM System x3550 M3, and Supermicro X8/X9 platforms.
-
Optimal Use: Ideal for configurations requiring high memory bandwidth and density where the server’s memory population guidelines specify the use of single-rank modules.
-
⚠ Important Note: 1Rx4 modules have specific population rules. They often cannot be mixed with dual-rank modules (2Rx4, 2Rx8) in the same channel. Consult your server’s technical manual before purchase.



