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1720
R610 memory speed limited to 800 MHz
Before my question, below I show the equipment I'm using
PowerEdge R1610
2x Intel Xeon E5506
6x DDR3L 8GB 1600 ECC RDIMM 1Rx4 (all memory modules are equal)
Memory sockets used: A1, A2, A3, B1, B2 and B3
Memory mode: optimizer
The R610 manual says
"For single or dual-rank memory modules:
• One memory module per channel supports up to 1333 MHz.
• Two memory modules per channel supports up to 1067 MHz."
As I'm using one memory module per channel, I'd expect a speed of 1333 MHz, but I'm being limited to 800 MHz (Total memory size in this case: 48GB)
If I use only four modules instead of 6, with the sockets A1, A2, B1 and B2 being populated, I'm still limited to 800 MHz (Total memory size in this case: 32GB)
What's wrong?
Any help would be great!
theflash1932
9 Legend
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16.3K Posts
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August 3rd, 2021 13:00
Check the specs on your CPU. The memory controller is built into the CPU chip, so the capabilities of the chip come into play here too:
https://ark.intel.com/content/www/us/en/ark/products/37096/intel-xeon-processor-e5506-4m-cache-2-13-ghz-4-80-gts-intel-qpi.html?wapkw=e5506
Memory Types: DDR3 800
Based on this, you'd need one of the X5600's to maximize the memory speed. Reason I asked about the BIOS versions is that IF there was after-market support added for faster memory types, functionality, reliability, etc., it would have been added with a BIOS update.
DELL-Shine K
4 Operator
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July 30th, 2021 20:00
Can you share the part# of DIMM modules used? Can you also confirm all memory is same part# also. Sometime this can happen when one memory module is bad of different type. Can you try by connecting only 2 DIMM (One Per CPU) and see the behavior and speed. If it still giving problem you can try with other 2 memory module and check
theflash1932
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16.3K Posts
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July 31st, 2021 06:00
What is your BIOS version?
edm7
3 Posts
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August 3rd, 2021 05:00
The BIOS version is 6.6.0 (the lasted, I think).
Both memory have the same reference, that is M393B1G70QH0-YK0.
The only difference is the brand
- 4 modules is from Smart (original memory that came with my server)
- 2 modules is from Samsung (the last one that I bought)
I've tried to use 4 modules from Smart, but the speed keep in 800 MHz.
I'll follow the recommendation from @DELL-Shine K and try to use only 2 memory module (first from Smart and after from Samsung).
edm7
3 Posts
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August 6th, 2021 11:00
Thanks @theflash1932
Question solved!
DennisW
25 Posts
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September 28th, 2021 06:00
Another thing to check is your power supplies. If you have the 502 Watt supplies, you may need to up those to the 714 Watt.
In the BIOS/Setup section for memory, it may be warning you of the reason memory is throttled.
Dell- Maria J
Moderator
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278 Posts
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September 28th, 2021 07:00
Hello,
I would like to add, that you can also find an information about supported in PowerEdge R610 Power supply modules here:
https://dell.to/3m9J6Po p.87
Your system supports the following power supply modules:
• 717-W High Output power supply
• 502-W Energy Smart power supply (the default power supply option for
this system)
Please ask me if you have any questions.
Thank you
Maria Januszka
#IWork4Dell
Dell | Social Outreach Services - Enterprise