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HP DIMM memory speed

chuckk281
Trusted Contributor

HP DIMM memory speed

Kim was looking for an explanation on DIMM terminology:

 

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Hi guys

 

Received the below info from Qspec for a dl380G7. I checked and the same is written  for BL460G7

 

Why is the 8GB memory module presented as native speed 1066Mhz while looking at the specs further down, it is presented as 1333Mhz… (see yellow spots)

 

  • HP 8GB (1x8GB) Dual Rank x4 PC3-10600 (DDR3-1333) Registered CAS-9 Memory Kit   500662-B21

 

Typo or do I misunderstand something?

 

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Todd answered Kim's question:

 

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Good morning

The 10600 is the max DIMM throughput the 1333 is the data rate.

 

ftp://ftp.hp.com/pub/c-products/servers/options/Memory-Config-Recommendations-for-Intel-Xeon-5500-Series-Servers-Rev1.pdf

 

 

 

Table 1 : DDR3 Speeds JEDEC Name

Common Name

Bit Data Rate*

Maximum DIMM Throughput

PC3-12800

DDR3-1600

1600 MT/s

12.8 GB/s

PC3-10600

DDR3-1333

1333 MT/s

10.6 GB/s

PC3-8500

DDR3-1066

1066 MT/s

8.5 GB/s

PC3-6400

DDR3-800

800 MT/s

6.4 GB/s

 

 

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Other input on this subject?