Memory Population Guideline for Xeon E5

© 2010 Kingston Technology Europe Limited and Kingston Digital Europe Limited. All rights reserved. All trademarks are the property of their respective owners.

Presented by:

Intel® Xeon® E5 Memory Guide

Kingston in cooperation with Microtronica

© 2010 Kingston Technology Europe Limited and Kingston Digital Europe Limited. All rights reserved. All trademarks are the property of their respective owners. June 29, 2012

Single-sided

module

1 rank

Single Rank

Double-sided

module

1 rank

Single Rank

Double-sided

module

2 ranks

Dual Rank

Double-sided

module

4 ranks

Quad Rank

A Rank is a section of 64-bit wide data

64-bit wide data area

64-bit wide area 64-bit wide area 64-bit wide area 64-bit wide area

1 2 3 4

1

Front

64-bit wide data area 1

Front Back

64-bit wide area 64-bit wide area 1 2

Front Back

Front Back

Chip population is indication for # of ranks

• Double-sided Modules are either single, dual or quad rank

• Single-sided Modules can theoretically be dual rank, but

you don’t see this in the market unless chips are placed

above each other.


• Dynamic RAM needs many refreshes/sec

– recharges do consume power, especially in large memory footprint scenarios

– With low-power CPUs, the power budget may be even up for CPU and memory!

• DDR3L = Low voltage is specified as 1.35V by JEDEC

– Modules are classified as PC3L-xxx

• Kingston DDR3L modules support dual-voltage 1.35V / 1.5V

– Currently there is no extra charge for LV DIMMs, savings are for free!

• Supported on current and next-gen server platforms

– Intel Sandy Bridge (Xeon E3 Series)

– Intel Westmere-EP/Romley-EP (Xeon 5600/E5 2600 and 2400 Series)

– Intel Westmere-EX (Xeon E7 Series)

• Also available in Very Low Profile (~17mm) height, Suffix “VLP”

DDR3U (1.25V)

Ultra Low Voltage

JEDEC Spec

for Mobile, Server

~ 2013?

KVR1333D3LS8R9S/2G

KVR1333D3LS8R9SL/2G VLP

KVR1333D3LS4R9S/4G

KVR1333D3LD8R9S/4G

KVR1333D3LD8R9SL/4G VLP

KVR1333D3LD4R9S/8G

KVR1333D3LQ8R9S/8G

KVR1333D3LD4R9S/16G

Low Voltage Memory


Available Capacities per Memory loads (aka Ranks)

Unbuffered ECC Registered LR-DIMMs

1GB SR SR n.a.

2GB SR or DR SR or DR n.a.

4GB SR, DR or QR SR, DR or QR n.a.

8GB DR DR or QR n.a.

16GB n.a. DR or QR Available

32GB n.a. n.a. Available

SR = Single rank

DR = Dual rank

QR = Quad rank

Ranks = Loads on memory bus (72-bit wide rows = 64 data + 8 ECC bits)

LR-DIMM Technology

• Similar to FB-DIMMs a few years ago, in LR-DIMMs an extra chip works as interface

between memory controller of the CPU and the memory chips on the module.

• It doesn’t matter how memory chips are organized from a CPU standpoint and

enables higher capacities with no “rank limitation”, at higher frequencies when

compared to quad rank.

• There is no frequency drop when populating all sockets, but LR DIMMs are more

expensive, of course


Max Memory Size

(dependent on memory

type)

Memory Types # of Memory

Channels

Max Memory

Bandwidth

Intel® Xeon® Processor E3-1220L (3M Cache, 2.20 GHz) 32 GB DDR3-1066/1333 2 21 GB/s

Intel® Xeon® Processor E3-1220LV2 (3M Cache, 2.30 GHz) 32 GB DDR3-1333/1600 2 25.6 GB/s

Intel® Xeon® Processor E3-1225V2 (8M Cache, 3.20 GHz) 32 GB DDR3-1333/1600 2 25.6 GB/s

Intel® Xeon® Processor E3-1230 (8M Cache, 3.20 GHz) 32 GB DDR3-1066/1333 2 21 GB/s

Intel® Xeon® Processor E5-2407 (10M Cache, 2.20 GHz) 375 GB DDR3-800/1066 3 25 GB/s

Intel® Xeon® Processor E5-2420 (15M Cache, 1.90 GHz) 375 GB DDR3-800/1066/1333 3 32 GB/s

Intel® Xeon® Processor E5-2430L (15M Cache, 2.00 GHz) 375 GB DDR3-800/1066/1333 3 32 GB/s

Intel® Xeon® Processor E5-2450 (20M Cache, 2.10 GHz) 375 GB DDR3-800/1066/1333/1600 3 38.4 GB/s

Intel® Xeon® Processor E5-2450L (20M Cache, 1.80 GHz) 375 GB DDR3-800/1066/1333/1600 3 38.4 GB/s

Intel® Xeon® Processor E5-2609 (10M Cache, 2.40 GHz) 750 GB DDR3-800/1066 4 34.1 GB/s

Intel® Xeon® Processor E5-2620 (15M Cache, 2.00 GHz) 750 GB DDR3-800/1066/1333 4 42.6 GB/s





Intel® Xeon® Processor E5-4603 (10M Cache, 2.00 GHz) 1500 GB DDR3-800/1066 4 34.1 GB/s





The processor’s role in memory speed - Intel

• The processor model determines the memory speed

Source: ark.intel.com - reformated


Using DDR3-1600 RDIMMs (1R/2R) 1.5V

Bank 1

Bank 2

Intel Xeon E5 server memory architecture

1600MHz

1066MHz

1DPC 2DPC 3DPC


Using DDR3-1600 RDIMMs (1R/2R) 1.5V

Bank 1

Bank 2

Bank 3


1600MHz

1066MHz

1DPC 2DPC 3DPC


Bank 1

Bank 2

Bank 3


1333MHz

Using DDR3L-1333 RDIMMs (1R/2R) 1.35V

1DPC 2DPC 3DPC


Using DDR3L-1333 LRDIMMs 1.35V

Bank 1

Bank 2

Bank 3


1066MHz

1DPC 2DPC 3DPC


Bank 1


Using DDR3-1600 ECC UDIMMs 1.5V

1DPC 3DPC 2DPC

1600MHz

1333MHz


Bank 1

Bank 2


Using DDR3-1600 ECC UDIMMs 1.5V

1DPC 3DPC 2DPC

1600MHz

1333MHz

Bank 3


General E5-2600 series memory rules for

quad-channel CPU + registered DIMM

Xeon E5-2x00 series Single rank & dual rank

modules Quad rank modules or mix

1 DIMM per Channel

1.35V up to 1333MHz1,2

1.5V up to 1600MHz1 1.35V at 800MHz2

1.5V at 1066MHz

2 DIMMs per Channel

1.35V up to 1333MHz1,2

1.5V up to 1600MHz1 1.35V at 800MHz2

1.5V at 1066MHz

3 DIMMs per Channel

1.35V Not Allowed 1.5V up to 1066MHz

Not Allowed

Footnotes:

1. Based upon processor’s and DIMM’s memory speed, and server platform firmware and BIOS settings affecting

memory.

2. When 1.35V memory is mixed with 1.5V memory, ALL memory is set to 1.5V. No mixing is allowed for 1.35V

operation.


Open Questions?

• There are three ways to find further assistance:

• Online:

– http://www.kingston.com/en/memory/search/devices?DevicesType=Motherboard

– Select Vendor, Motherboard, Preferences and see all compatible modules

• Email:

– [email protected]

– There is a multi-lingual team to assist you with server memory related questions

– Please don’t write them for other, e.g. sales- or marketing-related questions, this is

technical support for server only.

• Microtronica Engineering Team:

Mike Kreiten Business Development Manager

Server EMEA

Almir Hasikic Field Sales Engineer

Deutschland

Mario Marek Field Sales Engineer

Österreich und Schweiz

Phone: +49 (0)89 / 45618 375

Mobile: +49 (0)151 / 1624 2016

Phone: +49 (0)6103 / 304 8627

Mobile: +49 (0) 172 / 617 7397

Phone: +43 (0) 1 36046 49

Mobile: +43 (0) 664-2455605

[email protected] [email protected] [email protected]

http://www.kingston.com/en/memory/search/devices?DevicesType=Motherboard

http://www.kingston.com/en/memory/search/devices?DevicesType=Motherboard

mailto:[email protected]






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Memory Population Guideline for Xeon E5

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