SOLVED Do E5-16xx v3/v4 support LRDIMM?

[pro lamer]

Hi,

I think I have a bad day, because I can't manage to find a simple thing on the internet. My google-foo is just failing. Searching the motherboard manual didn't help either :(

Do E5-16xx Haswell/Broadwell CPUs support LRDIMM or only RDIMMs (and UDIMMs) DDR4?

If it depends on the motherboard then here it is: X10SRM-F/-TF... The motherboard's tested memory list only includes RDIMM memory but I've seen the Crucial company has LRDIMM modules tested with X10SRM...

 

[jgreco]

No, E5-16xx CPU's do not support LRDIMM.

The X10SRM-F should work fine with LRDIMM ... if you populate it with an E5-26xx CPU.

 

[jgreco]

I think I have a bad day, because I can't manage to find a simple thing on the internet. My google-foo is just failing.

I just did a quick search of the datasheets and couldn't come up with anything. I thought it'd be easy to find. Don't feel bad.

 

[Jessep]

https://www.supermicro.com/products/motherboard/Xeon/C600/X10SRi-F.cfm

Note ** E5-1600 series CPU does not support LRDIMM type memory

 

[jgreco]

https://www.supermicro.com/products/motherboard/Xeon/C600/X10SRi-F.cfm

Note ** E5-1600 series CPU does not support LRDIMM type memory

Yeah, but that information comes from somewhere, usually with a lot more specificity.

 

[pro lamer]

Note ** E5-1600 series CPU does not support LRDIMM type memory

Yeah, but that information comes from somewhere, usually with a lot more specificity.

Moreover supermicro didn't place this note for X10SRM :P

It seems to me a bit like tacit knowledge. I had had some thoughts the LRDIMMs wouldn't work with 16xx but I couldn't recall where I had learned that...

Sent from my phone

 

[Jessep]

Intel deprecated LRDIMM support in E5-1600 v1 and completely removed it in V2. They no longer reference it at all after V2.

https://www.intel.com/content/www/us/en/processors/xeon/xeon-e5-v2-datasheet-vol-1.html

Page 17:
LRDIMM x4, x8 (2-Gb and 4-Gb only) LR-DIMMs are supported only on server specific processors (Intel® Xeon® processor E5-2600 v2 and E5-4600 v2 product families). LR-DIMMs are not supported in workstation specific SKUs such as the Intel® Xeon® processor E5-1600 v2 product family.

 

[jgreco]

Intel deprecated LRDIMM support in E5-1600 v1 and completely removed it in V2. They no longer reference it at all after V2.

https://www.intel.com/content/www/us/en/processors/xeon/xeon-e5-v2-datasheet-vol-1.html

Page 17:
LRDIMM x4, x8 (2-Gb and 4-Gb only) LR-DIMMs are supported only on server specific processors (Intel® Xeon® processor E5-2600 v2 and E5-4600 v2 product families). LR-DIMMs are not supported in workstation specific SKUs such as the Intel® Xeon® processor E5-1600 v2 product family.

I bow to your search fu sir. Thank you. Thought I was going crazy. (Wait, yes, I am already crazy.)

 

[Jessep]

Thought I was going crazy. (Wait, yes, I am already crazy.)

Aren't we all? Thought that was a requirement to be here.

 

[jgreco]

Aren't we all? Thought that was a requirement to be here.

You got me there.

 

[silmor_senedlen]

No, E5-16xx CPU's do not support LRDIMM.

This topic a bit old, but... our system with Xeon E5-1650 v4 work with 2 x Crucial 64Gb LRDIMM Modules (CT64G4LFQ4266 / 72ASS8G72LZ-2G6D2 - Micron PDF - P/N: MTA72ASS8G72LZ-2G6) on Supermicro X10SRL-F.

CPU:

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Code:

Processor Information
        Socket Designation: CPU1
        Type: Central Processor
        Family: Xeon
        Manufacturer: Intel
        ID: F1 06 04 00 FF FB EB BF
        Signature: Type 0, Family 6, Model 79, Stepping 1
        Flags:
                FPU (Floating-point unit on-chip)
                VME (Virtual mode extension)
                DE (Debugging extension)
                PSE (Page size extension)
                TSC (Time stamp counter)
                MSR (Model specific registers)
                PAE (Physical address extension)
                MCE (Machine check exception)
                CX8 (CMPXCHG8 instruction supported)
                APIC (On-chip APIC hardware supported)
                SEP (Fast system call)
                MTRR (Memory type range registers)
                PGE (Page global enable)
                MCA (Machine check architecture)
                CMOV (Conditional move instruction supported)
                PAT (Page attribute table)
                PSE-36 (36-bit page size extension)
                CLFSH (CLFLUSH instruction supported)
                DS (Debug store)
                ACPI (ACPI supported)
                MMX (MMX technology supported)
                FXSR (FXSAVE and FXSTOR instructions supported)
                SSE (Streaming SIMD extensions)
                SSE2 (Streaming SIMD extensions 2)
                SS (Self-snoop)
                HTT (Multi-threading)
                TM (Thermal monitor supported)
                PBE (Pending break enabled)
        Version: Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz
        Voltage: 1.8 V
        External Clock: 100 MHz
        Max Speed: 4000 MHz
        Current Speed: 3600 MHz
        Status: Populated, Enabled
        Upgrade: Socket LGA2011-3
        L1 Cache Handle: 0x0038
        L2 Cache Handle: 0x0039
        L3 Cache Handle: 0x003A
        Serial Number: Not Specified
        Asset Tag: Not Specified
        Part Number: Not Specified
        Core Count: 6
        Core Enabled: 6
        Thread Count: 12
        Characteristics:
                64-bit capable
                Multi-Core
                Hardware Thread
                Execute Protection
                Enhanced Virtualization
                Power/Performance Control

RAM:

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Code:

# dmidecode 3.2
# SMBIOS entry point at 0x000f05e0
Found SMBIOS entry point in EFI, reading table from /dev/mem.
SMBIOS 3.0 present.

Handle 0x002B, DMI type 16, 23 bytes
Physical Memory Array
        Location: System Board Or Motherboard
        Use: System Memory
        Error Correction Type: Multi-bit ECC
        Maximum Capacity: 512 GB
        Error Information Handle: Not Provided
        Number Of Devices: 8

Handle 0x002C, DMI type 17, 40 bytes
Memory Device
        Array Handle: 0x002B
        Error Information Handle: Not Provided
        Total Width: 72 bits
        Data Width: 64 bits
        Size: 64 GB
        Form Factor: DIMM
        Set: None
        Locator: DIMMA1
        Bank Locator: P0_Node0_Channel0_Dimm0
        Type: DDR4
        Type Detail: Synchronous
        Speed: 2667 MT/s
        Manufacturer: Micron
        Serial Number: XXXXXXX
        Asset Tag: DIMMA1_AssetTag (date:19/20)
        Part Number: 72ASS8G72LZ-2G6D2
        Rank: 4
        Configured Memory Speed: 2400 MT/s
        Minimum Voltage: Unknown
        Maximum Voltage: Unknown
        Configured Voltage: Unknown

Handle 0x002D, DMI type 17, 40 bytes
Memory Device
        Array Handle: 0x002B
        Error Information Handle: Not Provided
        Total Width: Unknown
        Data Width: Unknown
        Size: No Module Installed
        Form Factor: DIMM
        Set: None
        Locator: DIMMA2
        Bank Locator: P0_Node0_Channel0_Dimm1
        Type: DDR4
        Type Detail: Synchronous
        Speed: Unknown
        Manufacturer: NO DIMM
        Serial Number: NO DIMM
        Asset Tag: NO DIMM
        Part Number: NO DIMM
        Rank: Unknown
        Configured Memory Speed: Unknown
        Minimum Voltage: Unknown
        Maximum Voltage: Unknown
        Configured Voltage: Unknown

Handle 0x002E, DMI type 17, 40 bytes
Memory Device
        Array Handle: 0x002B
        Error Information Handle: Not Provided
        Total Width: 72 bits
        Data Width: 64 bits
        Size: 64 GB
        Form Factor: DIMM
        Set: None
        Locator: DIMMB1
        Bank Locator: P0_Node0_Channel1_Dimm0
        Type: DDR4
        Type Detail: Synchronous
        Speed: 2667 MT/s
        Manufacturer: Micron
        Serial Number: XXXXXXX
        Asset Tag: DIMMB1_AssetTag (date:19/20)
        Part Number: 72ASS8G72LZ-2G6D2
        Rank: 4
        Configured Memory Speed: 2400 MT/s
        Minimum Voltage: Unknown
        Maximum Voltage: Unknown
        Configured Voltage: Unknown

Handle 0x002F, DMI type 17, 40 bytes
Memory Device
        Array Handle: 0x002B
        Error Information Handle: Not Provided
        Total Width: Unknown
        Data Width: Unknown
        Size: No Module Installed
        Form Factor: DIMM
        Set: None
        Locator: DIMMB2
        Bank Locator: P0_Node0_Channel1_Dimm1
        Type: DDR4
        Type Detail: Synchronous
        Speed: Unknown
        Manufacturer: NO DIMM
        Serial Number: NO DIMM
        Asset Tag: NO DIMM
        Part Number: NO DIMM
        Rank: Unknown
        Configured Memory Speed: Unknown
        Minimum Voltage: Unknown
        Maximum Voltage: Unknown
        Configured Voltage: Unknown

Handle 0x0030, DMI type 17, 40 bytes
Memory Device
        Array Handle: 0x002B
        Error Information Handle: Not Provided
        Total Width: Unknown
        Data Width: Unknown
        Size: No Module Installed
        Form Factor: DIMM
        Set: None
        Locator: DIMMC1
        Bank Locator: P0_Node0_Channel2_Dimm0
        Type: DDR4
        Type Detail: Synchronous
        Speed: Unknown
        Manufacturer: NO DIMM
        Serial Number: NO DIMM
        Asset Tag: NO DIMM
        Part Number: NO DIMM
        Rank: Unknown
        Configured Memory Speed: Unknown
        Minimum Voltage: Unknown
        Maximum Voltage: Unknown
        Configured Voltage: Unknown

Handle 0x0031, DMI type 17, 40 bytes
Memory Device
        Array Handle: 0x002B
        Error Information Handle: Not Provided
        Total Width: Unknown
        Data Width: Unknown
        Size: No Module Installed
        Form Factor: DIMM
        Set: None
        Locator: DIMMC2
        Bank Locator: P0_Node0_Channel2_Dimm1
        Type: DDR4
        Type Detail: Synchronous
        Speed: Unknown
        Manufacturer: NO DIMM
        Serial Number: NO DIMM
        Asset Tag: NO DIMM
        Part Number: NO DIMM
        Rank: Unknown
        Configured Memory Speed: Unknown
        Minimum Voltage: Unknown
        Maximum Voltage: Unknown
        Configured Voltage: Unknown

Handle 0x0032, DMI type 17, 40 bytes
Memory Device
        Array Handle: 0x002B
        Error Information Handle: Not Provided
        Total Width: Unknown
        Data Width: Unknown
        Size: No Module Installed
        Form Factor: DIMM
        Set: None
        Locator: DIMMD1
        Bank Locator: P0_Node0_Channel3_Dimm0
        Type: DDR4
        Type Detail: Synchronous
        Speed: Unknown
        Manufacturer: NO DIMM
        Serial Number: NO DIMM
        Asset Tag: NO DIMM
        Part Number: NO DIMM
        Rank: Unknown
        Configured Memory Speed: Unknown
        Minimum Voltage: Unknown
        Maximum Voltage: Unknown
        Configured Voltage: Unknown

Handle 0x0033, DMI type 17, 40 bytes
Memory Device
        Array Handle: 0x002B
        Error Information Handle: Not Provided
        Total Width: Unknown
        Data Width: Unknown
        Size: No Module Installed
        Form Factor: DIMM
        Set: None
        Locator: DIMMD2
        Bank Locator: P0_Node0_Channel3_Dimm1
        Type: DDR4
        Type Detail: Synchronous
        Speed: Unknown
        Manufacturer: NO DIMM
        Serial Number: NO DIMM
        Asset Tag: NO DIMM
        Part Number: NO DIMM
        Rank: Unknown
        Configured Memory Speed: Unknown
        Minimum Voltage: Unknown
        Maximum Voltage: Unknown
        Configured Voltage: Unknown

Umm, maybe I'm missing something?

 

[jgreco]

This topic a bit old, but... our system with Xeon E5-1650 v4 work with 2 x Crucial 64Gb LRDIMM Modules (CT64G4LFQ4266 / 72ASS8G72LZ-2G6D2 - Micron PDF - P/N: MTA72ASS8G72LZ-2G6) on Supermicro X10SRL-F.

And you think that means that Sandy Bridge will support LRDIMM too, despite @Jessep above actually quoting the tech ref manual?

Umm, maybe I'm missing something?

Yeah, the skeezy market segmentation practices at Intel.

Generally speaking, Intel wanted CPU's in the E5-16* (regardless of generation) to be workstation class CPU's, sold at a lower price point. They realized that there would be some of us who would see this as a way to build less expensive servers. In Intel's mind, a server should be a big thing with massive CPU cores and lots of memory, but there are use cases like FreeNAS where a much more limited CPU plus gobs of memory will be very sufficient. So they actually found a way to bake into the CPU silicon a way to make sure that a workstation CPU couldn't be crammed to the gills with high density memoty.

 

[silmor_senedlen]

And you think that means that Sandy Bridge will support LRDIMM too,

No, but this topic only about v3/v4, and in my example, v4 works fine with LRDIMM.