LGA 2011

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LGA 2011
Socket 2011 IMGP3918.jpg
Type LGA
Chip form factors Flip-chip land grid array
Contacts 2011
FSB protocol Intel QuickPath Interconnect DMI 2.0
FSB frequency 1× to 2× QuickPath, DMI 2.0
Processors Sandy Bridge-E/EP
Ivy Bridge-E
Predecessor LGA 1366, LGA 1567
This article is part of the CPU socket series

LGA 2011, also called Socket R, is a CPU socket by Intel. It replaces Intel's LGA 1366 (Socket B) and LGA 1567 in the performance and high-end desktop and server platforms.[1] The socket has 2011 protruding pins which touch contact points on the underside of the processor.

Socket R uses QPI to connect the CPU to additional CPUs. DMI 2.0 is used to connect the processor to the PCH. The memory controller and 40 PCIe lanes are integrated on the CPU. On a secondary processor an extra ×4 PCIe interface replaces the DMI interface. As with its predecessor LGA 1366 there is no provision for integrated graphics.

The socket was released on 14 November 2011,[2] and supports 4 DDR3 SDRAM memory channels with 1 unbuffered DIMM per channel, as well as 40× PCIe 2.0 or 3.0 lanes.[3] LGA 2011 also has to ensure platform scalability beyond eight cores and 20 MB of cache.[4]

LGA 2011 socket is used by Sandy Bridge-E/EP and Ivy Bridge-E/EP processors with the corresponding X79 (E – enthusiast class) and C600-series (EP – Xeon class) chipsets. LGA 2011-1, an updated generation of the socket and the successor of LGA 1567, is used for Ivy Bridge-EX (Xeon E7 v2) CPUs,[5] which were released in February 2014. LGA 2011-v3 (also referred to as LGA 2011-3) is another updated generation of the socket, used for Haswell-E CPUs,[6] which were released in August 2014. Updated socket generations are physically similar to LGA 2011, but the used electrical signals and ILM keying prevent them from being backward compatible with older CPUs.[7]

Physical design and socket generations[edit]

Intel CPU sockets use the so-called Independent Loading Mechanism (ILM) retention device that holds the CPU in place while applying an exact amount of force required for a CPU to be properly seated. As part of their design, ILMs have differently placed protrusions which are intended to mate with cutouts in CPU packagings. These protrusions, also known as ILM keying, have the purpose of preventing installation of incompatible CPUs into otherwise physically compatible sockets, and preventing ILMs to be mounted with a 180-degree rotation relative to the CPU socket.[8]

Different variants (or generations) of the LGA 2011 socket and associated CPUs come with different ILM keying, which makes it possible to install CPUs only into generation-matching sockets. CPUs that are intended to be mounted into LGA 2011-0, LGA 2011-1 or LGA 2011-v3 sockets are all mechanically compatible regarding their dimensions and ball pattern pitches, but the designations of contacts are different between generations of the LGA 2011 socket and CPUs, thus making them electrically and logically incompatible. Original LGA 2011 socket is used for Sandy Bridge-E/EP and Ivy Bridge-E/EP processors, while LGA 2011-1 is used for Ivy Bridge-EX (Xeon E7 v2) CPUs, which were released in February 2014. LGA 2011-v3 socket is used for Haswell-E CPUs, which were released in August 2014.[5][6][7][9]

Two types of ILM exist, with different shapes and heatsink mounting hole patterns: square ILM (80×80 mm mounting pattern), and narrow ILM (56×94 mm mounting pattern). Square ILM is the standard type, while the narrow one is alternatively available for space-constrained applications.[10] A matching heatsink is required for each ILM type.[11]

Chipsets[edit]

Information for the Intel X79 (for Desktop) and C600 series (for Workstation/Server and codenamed Romley[12]) chipset can be found in the table below. The Romley (EP) platform was delayed approximately one quarter, allegedly due to a SAS controller bug.[12]

The X79 appears to contain the same silicon as the C600 series, with ECS having enabled the SAS controller for one of their boards, even though SAS is not officially supported by Intel for X79.[13]

Name X79[14][15] X99 C602J[16] C602[17] C604[18] C606[19] C608[20]
CPU Support Sandy Bridge-E, Ivy Bridge-E[21] Haswell-E Sandy Bridge-EP (Xeon E5 1600/2600/4600 series), Ivy Bridge-EP (Xeon E5 1600/2600/4600 v2 series)
Memory standard and maximum slots Quad-channel DDR3, up to two DIMMs per channel Quad-channel DDR4, up to two DIMMs per channel Quad-channel DDR3, up to three DIMMs per channel per each CPU[22][23]
Overclocking Yes Yes N/A
Embedded GPU No No No
RAID 0/1/5/10 Yes Yes Yes[24]
Maximum USB Ports (USB 3.0) 14 (0)[25] 14 (6) 14 (0)[24]
Maximum SATA Ports (SATA 3.0, 6 Gbit/s) 6 (2)[25] 10 (10) 6 (2)[24] 6 (2) + 4 SCU SATA[24] 6 (2) + 4 SCU SAS/SATA[24] 6 (2) + 8 SCU SAS/SATA[24]
Main PCIe configuration 40 PCIe lanes[26] 40 PCIe lanes; 2 ×16 + 1 ×8, or 5 ×8 40 PCIe lanes per each CPU[22]
Secondary PCIe 8 × PCIe 2.0 (5 GT/s) 8 × PCIe 2.0 (5 GT/s) 8 × PCIe 2.0 (5 GT/s)[24]
PCI Yes Yes[24]
Intel Rapid Storage Technology Yes v13.1 Yes (Enterprise edition)
Smart Response Technology No Yes No
Intel vPro No No Yes
Release Date 14 November 2011 29 August 2014 Q1 2012

Compatible processors[edit]

Desktop (Sandy Bridge-E/Ivy Bridge-E/Haswell-E)[edit]

Information for the desktop LGA 2011 socket processors can be found in the table below.

Name Cores Threads Frequency Turbo Boost Multiplier L2 cache L3 cache PCIe 3.0 lanes TDP Release Date[29] Price (US)[30]
Sandy Bridge-E
Core i7-3820 4 8 3.60 GHz 3.80 GHz Partially Unlocked 4 × 256 KB 10 MB 40 130 W 14 February 2012 $305 [31]
Core i7-3930K 6 12 3.20 GHz Unlocked 6 × 256 KB 12 MB 14 November 2011 $555[32]
Core i7-3960X Extreme Edition 3.30 GHz 3.90 GHz 15 MB $990[32]
Core i7-3970X Extreme Edition 3.50 GHz 4.00 GHz 150 W Q4 2012 $999
Ivy Bridge-E
Core i7-4820K 4 8 3.70 GHz 3.90 GHz Unlocked 4 × 256 KB 10 MB 40 130 W Q3 2013 $323[33]
Core i7-4930K 6 12 3.40 GHz 6 × 256 KB 12 MB $583[33]
Core i7-4960X Extreme Edition 3.60 GHz 4.00 GHz 15 MB $999[33]
Haswell-E
Core i7-5820K[34] 6 12 3.3 GHz 3.6 GHz Unlocked 6 x 256 KB 15 MB 28 140 W 29 August 2014 $396
Core i7-5930K[35] 3.5 GHz 3.7 GHz 40 $550
Core i7-5960X Extreme Edition[36] 8 16 3.0 GHz 3.5 GHz 8 × 256 KB 20 MB $999

1 The X79 chipset allows for increasing the base clock (BCLK), Intel calls it CPU Strap, by 1.00×, 1.25×, 1.66× or 2.50×. The CPU frequency is derived by the BCLK times the CPU multiplier.

Server (Xeon E5-16xx/26xx)[edit]

Information for the server LGA 2011 socket processors can be found in the table below.

Name Cores Threads Frequency Turbo Boost Multiplier L2 cache L3 cache TDP Release Date Price (US)[37][38]
Xeon E5 1620 4 8 3.60 GHz 3.90 GHz 38 4 × 256 KB 10 MB 130 W Q1 2012[39][40] $294
Xeon E5 1650 6 12 3.20 GHz 3.80 GHz 6 × 256 KB 12 MB $583
Xeon E5 1660 3.30 GHz 3.90 GHz 39 15 MB $1080
Xeon E5 2603 4 4 1.8 GHz not supported[41] 18 4 × 256 KB 10 MB 80 W Q1 2012 $198
Xeon E5 2609 2.4 GHz not supported[42] 24 $294
Xeon E5 2620 6 12 2.0 GHz 2.5 GHz 25 6 × 256 KB 15 MB 95 W $406
Xeon E5 2630 2.3 GHz 2.8 GHz 28 $612
Xeon E5 2630L 2.0 GHz 2.5 GHz 20 60 W $662
Xeon E5 2637 2 4 3.0 GHz 3.5 GHz 30 2 × 256 KB 5 MB 80 W $885
Xeon E5 2640 6 12 2.5 GHz 3.0 GHz 6 × 256 KB 15 MB 95 W
Xeon E5 2643 4 8 3.3 GHz 3.5 GHz 33 4 × 256 KB 10 MB 130 W
Xeon E5 2650 8 16 2.0 GHz 2.8 GHz 28 8 × 256 KB 20 MB 95 W $1107
Xeon E5 2658 2.1 GHz 2.4 GHz N/A $1141
Xeon E5 2650L 1.8 GHz 2.3 GHz 18 70 W $1107
Xeon E5 2660 2.2 GHz 3.0 GHz 30 95 W $1329
Xeon E5 2665 2.4 GHz 3.1 GHz 31 115 W $1440
Xeon E5 2667 6 12 2.9 GHz 3.5 GHz 29 6 × 256 KB 15 MB 130 W $1552
Xeon E5 2670 8 16 2.6 GHz 3.3 GHz 33 8 × 256 KB 20 MB 115 W
Xeon E5 2680 2.7 GHz 3.5 GHz 35 130 W $1723
Xeon E5 2687W 3.1 GHz 3.8 GHz 31 150 W $1885
Xeon E5 2690 2.9 GHz 38 135 W $2057

References[edit]

  1. ^ Real World Technologies (2010-09-25). "Real World Technologies - Intel's Sandy Bridge Microarchitecture". Realworldtech.com. Retrieved 2011-08-22. 
  2. ^ "Sandy Bridge-E and MSI X79 preview". 2011-09-28. Retrieved 2011-09-28. 
  3. ^ http://www.intel.com/content/www/us/en/processors/core/core-i7-lga-2011-datasheet-vol-1.html
  4. ^ "Socket 2011 Futures: A Difficult Road to Perfection by". Vr-zone.com. 2011-07-30. Retrieved 2011-08-22. 
  5. ^ a b "Intel Xeon Processor E7-2800/4800/8800 v2 Product Family Thermal/Mechanical Specifications and Design Guide" (PDF). Intel. February 2014. pp. 17–18, 81. Retrieved 2014-08-23. 
  6. ^ a b "Intel Core i7 Processor Family for LGA2011-v3 Socket: Datasheet, Volume 1 of 2" (PDF). Intel. August 2014. Retrieved 2014-08-31. 
  7. ^ a b Ian Cutress (2014-02-20). "Intel’s Three Versions of Socket 2011, Not Compatible". AnandTech. Retrieved 2014-08-26. 
  8. ^ "Intel Core i7 Processor Families for the LGA2011-0 Socket: Thermal Mechanical Specification and Design Guide" (PDF). Intel. November 2012. pp. 26, 31. Retrieved 2014-06-14. 
  9. ^ "Processors Intel Haswell-E and LGA2011 platform-3 Overview". extremespec.net. 2013-06-17. Retrieved 2014-06-14. 
  10. ^ "Intel Xeon Processor E5 1600/2600/4600 Product Families Thermal / Mechanical Design Guide" (PDF). 2012-09-04. Retrieved 2012-09-04. 
  11. ^ "Narrow ILM v. Square ILM – LGA2011 Heatsink Differences". servethehome.com. 2012-12-06. Retrieved 2014-12-02. 
  12. ^ a b http://www.theregister.co.uk/2011/11/28/intel_xeon_e5_sas_bug/
  13. ^ http://www.tomshardware.com/reviews/xeon-e5-2687w-benchmark-review,3149-3.html
  14. ^ "X79 Express And Another New Processor Interface". Tom's Hardware. 2011-09-12. Retrieved 2011-09-12. 
  15. ^ X79 Express Chipset Specifications
  16. ^ C602J Chipset Specifications
  17. ^ C602J Chipset Specifications
  18. ^ C602J Chipset Specifications
  19. ^ C602J Chipset Specifications
  20. ^ C602J Chipset Specifications
  21. ^ "Intel Ivy Bridge-E Slated For Q4 2012, Compatible with Sandy Bridge-E". Vr-zone.com. 2011-11-18. Retrieved 2011-11-18. 
  22. ^ a b "Intel® Xeon® Processor E5 v2 Family: Datasheet, Vol. 1". Intel Corporation. 
  23. ^ M. Schneider (2014-01-08). "Memory Configuration Guide for X9 Series DP Motherboards – Revised Ivy Bridge Update (Socket R & B2)" (PDF). Supermicro. Retrieved 2014-09-22. 
  24. ^ a b c d e f g h "Intel C600 Series Chipset and Intel X79 Express Chipset Datasheet". Intel Corporation. 
  25. ^ a b "Intel Core i7-3960X Review: Sandy Bridge-E And X79 Express". Tom's Hardware. 2011-11-14. Retrieved 2011-11-14. 
  26. ^ "Intel Sandy Bridge-E "Core i7 3960X" Benchmarks and Slides Unveiled". Wccftech.com. 2011-11-12. Retrieved 2011-11-12. 
  27. ^ "Intel Core i7-3960X and i7-3930K CPUs to Reach C2 Stepping in January 2012". News.softpedia.com. 2011-12-12. Retrieved 2012-01-04. 
  28. ^ "IDF: Intel shows off liquid cooler, DX79SI motherboard for Sandy Bridge-E processors". 2011-09-13. Retrieved 2011-09-15. 
  29. ^ "Intel Roadmap Leaked: Sandy Bridge Enthusiast Specs". Overclockers. Retrieved 2011-08-22. 
  30. ^ "Intel's Sandy Bridge-E priced, don't expect any surprises by". Vr-zone.com. 2011-08-15. Retrieved 2011-08-22. 
  31. ^ "Intel Core i7 3820 Review: $285 Quad-Core Sandy Bridge E". AnandTech. 2011-12-29. Retrieved 2012-01-04. 
  32. ^ a b "Intel Sandy Bridge-E "Core i7 3960X" benchmarks and slides unveiled". Wccftech.com. 2011-11-12. Retrieved 2012-01-04. 
  33. ^ a b c http://techreport.com/news/25168/report-ivy-bridge-e-processors-to-start-at-310
  34. ^ http://ark.intel.com/products/82932/Intel-Core-i7-5820K-Processor-15M-Cache-up-to-3_60-GHz
  35. ^ http://ark.intel.com/products/82931/Intel-Core-i7-5930K-Processor-15M-Cache-up-to-3_70-GHz
  36. ^ http://ark.intel.com/products/82930/Intel-Core-i7-5960X-Processor-Extreme-Edition-20M-Cache-up-to-3_50-GHz
  37. ^ "Prices of Intel Xeon E5-1600 series CPUs". 2011-09-19. Retrieved 2011-09-28. 
  38. ^ http://ark.intel.com/products/series/61422
  39. ^ "Launch schedule of Intel Xeon E5 microprocessors". 2011-10-10. Retrieved 2011-10-16. 
  40. ^ http://www.brack.ch/tabid/261/stufe/333622/Default.aspx
  41. ^ Listed in ark.intel.com about 2603 as Turbo Boost: No.
  42. ^ Listed in ark.intel.com about 2609 as Turbo Boost: No.
Desktop sockets
Mobile sockets
Server sockets
Xeon processors
Itanium processors
Pre-Pentium II PGA Sockets
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