Xeon 6 (P-cores and E-cores) Granite Rapids and Sierra Forest - support for DIMMs other than 6400 MT

[Renata1]

Hello Intel Comunity!

I'd like to know whether Platforms with Xeon 6 (both E-cores and P-cores) - Granite Rapids and Sierra Forest would work without issues with DIMMS DDR5 5600 MT or DDR5 4800 MT? 

Thank you!

[Adithya_Intel]

Hello Renata1,

Greetings for the day!

Yes, platforms based on Intel Xeon 6 (including Granite Rapids and Sierra Forest) support DDR5 memory, including both 5600 MT/s and 4800 MT/s DIMMs, provided they are used within supported configurations.

For detailed information, please refer below for Intel’s official documentation:

https://www.intel.com/content/www/us/en/support/articles/000102525/processors/intel-xeon-processors…

To help us provide more precise compatibility guidance, we recommend sharing the exact processor model (for example, Intel Xeon 6333P), as supported memory speeds and configurations may vary by SKU.

For example, in case of Intel Xeon 6333P please refer to the below link, specifically under memory specifications - memory type and max memory speeds: https://www.intel.com/content/www/us/en/products/sku/241602/intel-xeon-6333p-processor-18m-cache-3-10-ghz/specifications.html

You may also review the specifications for Intel Xeon 6 processors on Intel’s website for additional details.

Link for the Intel Xeon 6 Processor Collection - https://www.intel.com/content/www/us/en/ark/products/series/240357/intel-xeon-6-processors.html

Please feel free to reach out if you need any further assistance—we’re happy to help!

Thank you.

Regards,

Adithya_Intel

[Renata1]

Hi Adithya,

What about 6500/6700 series? I know that 6300 series supports other DIMM 4800 MT. But what about higher performence? Could you please cofirme that 6500/6700/6900 series supports DIMM with 5600 MT or 4800 MT speed?

Thank you

Renata 

[pujeeth]

Hello Renata1,

Greetings!

Please find below the maximum supported memory speeds for the processors:

For Intel Xeon 6500P/6700P-series processors:

• DDR5: Up to 6400 MT/s (1DPC) / 5200 MT/s (2DPC)

For Intel® Xeon® 6 Processors – 6900-series:

• DDR5: Up to 6400 MT/s (1DPC)

Regard

Pujeeth_Intel

[Renata1]

Hello Pujeeth,

Thank you for reply. 

You've shared with me supported memory speed, meaning the speed which will CPU "cut-down" or maintain. 

Let me reiterate my quesion.

I would like to verify the memory compatibility for the Intel Xeon 6 series (6500/6700/6900). Is it mandatory to use DDR5 6400 MT/s modules, or does the platform support down-clocking? Specifically, can I configure a Xeon 6700-based server with DDR5 5600 MT/s RAM? Will the system recognize the modules and operate stably at the lower frequency, similar to how it worked with 4th and 5th Gen Scalable processors?

Thank you

Renata

[Sreelakshmi1]

Hi Renata1,

Greetings!

We have shared an email sharing additional information for the reported query. Please review it and let us know if any further assistance is required.

Best Regards,

Sreelakshmi

Intel Customer Support Technician

[Adithya_Intel]

Hi Renata1,

Greetings for the day!

I wanted to follow up on our previous email regarding the memory compatibility information for Intel Xeon 6700/6500-series processors. I hope you had a chance to review the details shared.

Please let us know if you have any questions or need further clarification. We would be happy to assist you further.

Looking forward to your response.

Best regards,

Adithya_Intel

Intel Customer Support Technician

[Adithya_Intel]

Hi Renata1,

Greetings for the day!

This is a follow-up regarding the reported issue. We are keen to ensure a prompt resolution and would appreciate any updates or additional information you can provide.

Please feel free to respond at your earliest convenience.

We look forward to your response.

Best regards,

Adithya_Intel

Intel Customer Support Technician