DL360G6 - mixing dual and quad rank DIMMs

[Jason McInnes]

Good day

I cannot find this information anywhere - hopefully someone here can help.

I wish to mix dual rank and quad rank DIMMs together in the following manner:

6x16GB QR 1066MHz
6x8GB DR 1333MHz

for a total of 144GB RAM. This is in a G6 perf (dual X5550) server.

A) Is this a supported configuration?
B) What will the resulting memory speed be if it is supported? 1066 or 800?

Thanks

A

[gsb_2]

Up to eight (8) ranks may be installed per channel
o Quad-rank DIMMs are limited to two per channel.
o If a quad-rank DIMM is used, it must be installed as the first DIMM on that memory channel. To help identify slots, in a ProLiant G6 server the first DIMM slot in each memory channel is colored white.
o If a single quad-rank DIMM is installed anywhere in the system, then no channel is allowed to have 3 DIMMs.

As for speed I think it is 800 with three dimms per channel, 1066 with two dimms per channel.

This is a good white paper if you can find it
ftp://ftp.hp.com/pub/c-products/servers/options/Memory-Config-Recommendations-for-Intel-Xeon-5500-Series-Servers-Rev1.pdf

[Jason McInnes]

Thanks for the reply. Can anyone advise on the memory speed for this configuration?

[Evan Z]

Did you ever figure out the end RAM speed for this configuration?

I am looking to purchase DL460c or DL490c G7s with quad and dual rank DIMMs

6x16GB QR 1066MHz
6x8GB DR 1333MHz

for a total of 144GB RAM with a dual x5670 CPU.

I am hoping this configuration runs at 1066 MHz.  If it is stuck at 800 MHz I will ditch the 8GB sticks and upgrade them to 16GB QR.

[jmquesadarivel]

check http://h18000.www1.hp.com/products/quickspecs/13235_na/13235_na.html#Memory

and

http://h18004.www1.hp.com/products/servers/options/tool/hp_memtool.html