LGA 2011
LGA 2011, also called Socket R, is a CPU socket by Intel. Released on November 14, 2011, it replaces Intel's LGA 1366 and LGA 1567 in the performance and high-end desktop and server platforms. The socket has 2011 protruding pins that touch contact points on the underside of the processor.
The LGA 2011 socket 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 PCI Express 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 provisioning for integrated graphics. This socket supports four DDR3 or DDR4 SDRAM memory channels with up to three unbuffered or registered DIMMs per channel, as well as up to 40 PCI Express 2.0 or 3.0 lanes. LGA 2011 also has to ensure platform scalability beyond eight cores and 20 MB of cache.
The LGA 2011 socket is used by Sandy Bridge-E/EP and Ivy Bridge-E/EP processors with the corresponding X79 and C600-series chipsets. It and LGA 1155 are the two last Intel sockets to support Windows XP and Windows Server 2003.
LGA 2011-1, an updated generation of the socket and the successor of LGA 1567, is used for Ivy Bridge-EX, Haswell-EX and Broadwell-EX CPUs, which were released in February 2014, May 2015 and July 2016, respectively.
LGA 2011-v3 is another updated generation of the socket, used for Haswell-E and Haswell-EP CPUs, which were released in August and September 2014, respectively. Updated socket generations are physically similar to LGA 2011, but different electrical signals, ILM keying and integration of DDR4 memory controller rather than DDR3 prevent backward compatibility with older CPUs.
In the server market, it was succeeded by LGA 3647, when in high-end desktop and workstation markets its successor is LGA 2066. Xeon E3 family of processors, later renamed Xeon E, uses consumer-grade sockets.
Physical design and socket generations
Intel CPU sockets use the so-called Independent Loading Mechanism retention device to apply the specific amount of uniform pressure required to correctly hold the CPU against the socket interface. 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.Different variants 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, which makes 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 and Haswell-EX CPUs, which were released in February 2014 and May 2015, respectively. LGA 2011-v3 socket is used for Haswell-E and Haswell-EP CPUs, which were released in August and September 2014, respectively.
Two types of ILM exist, with different shapes and heatsink mounting hole patterns, both with M4 x 0.7 threads: square ILM, and narrow ILM. Square ILM is the standard type, while the narrow one is alternatively available for space-constrained applications. A matching heatsink is required for each ILM type.
Chipsets
Information for the Intel X79 and C600 series chipsets is in the table below. The Romley platform was delayed approximately one quarter, allegedly due to a SAS controller bug.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.
Compatible processors
Desktop (Sandy Bridge-E/Ivy Bridge-E/Haswell-E/Broadwell-E)
Desktop processors for the LGA 2011, 2011-3 socket are listed in the table below.- All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, Enhanced Intel SpeedStep Technology, Intel 64, XD bit, TXT, Intel VT-x, Intel VT-d, Turbo Boost, AES-NI, Smart Cache, Hyper-threading, except the C1 stepping models, which lack VT-d.
- Sandy Bridge-E, Ivy Bridge-E and Haswell-E processors are not bundled with standard air-cooled CPU coolers. Intel is offering a standard CPU cooler, and a liquid-cooled CPU cooler, which are both sold separately.
- Sandy Bridge-E and Ivy Bridge-E processors are compatible with the Intel X79 chipset.
- Haswell-E and Broadwell-E processors are compatible with the Intel X99 chipset.
Server (Xeon E5-16xx/26xx)
Server processors for the LGA 2011 socket are listed in the table below.- All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, Enhanced Intel SpeedStep Technology, Intel 64, XD bit, TXT, Intel VT-x, Intel VT-d, AES-NI, Smart Cache. Not all support Hyper-threading and Turbo Boost.
| Name | Cores | Threads | Frequency | Turbo Boost | Multiplier | L2 cache | L3 cache | TDP | Release date | Price |
| Xeon E5-1620 | 4 | 8 | 3.60 GHz | 3.90 GHz | 38 /unlocked | 4 × 256 KB | 10 MB | 130 W | Q1 2012 | $294 |
| Xeon E5-1650 | 6 | 12 | 3.20 GHz | 3.80 GHz | 38 /unlocked | 6 × 256 KB | 12 MB | 130 W | Q1 2012 | $583 |
| Xeon E5-1660 | 6 | 12 | 3.30 GHz | 3.90 GHz | 39/unlocked | 6 × 256 KB | 15 MB | 130 W | Q1 2012 | $1080 |
| Xeon E5-2603 | 4 | 4 | 1.8 GHz | Not supported | 18 | 4 × 256 KB | 10 MB | 80 W | Q1 2012 | $198 |
| Xeon E5-2609 | 4 | 4 | 2.4 GHz | Not supported | 24 | 4 × 256 KB | 10 MB | 80 W | Q1 2012 | $294 |
| Xeon E5-2620 | 6 | 12 | 2.0 GHz | 2.5 GHz | 25 | 6 × 256 KB | 15 MB | 95 W | Q1 2012 | $406 |
| Xeon E5-2630 | 6 | 12 | 2.3 GHz | 2.8 GHz | 28 | 6 × 256 KB | 15 MB | 95 W | Q1 2012 | $612 |
| Xeon E5-2630L | 6 | 12 | 2.0 GHz | 2.5 GHz | 20 | 6 × 256 KB | 15 MB | 60 W | Q1 2012 | $662 |
| Xeon E5-2637 | 2 | 4 | 3.0 GHz | 3.5 GHz | 30 | 2 × 256 KB | 5 MB | 80 W | Q1 2012 | $885 |
| Xeon E5-2640 | 6 | 12 | 2.5 GHz | 3.0 GHz | 30 | 6 × 256 KB | 15 MB | 95 W | Q1 2012 | $885 |
| Xeon E5-2643 | 4 | 8 | 3.3 GHz | 3.5 GHz | 33 | 4 × 256 KB | 10 MB | 130 W | Q1 2012 | $885 |
| Xeon E5-2650 | 8 | 16 | 2.0 GHz | 2.8 GHz | 28 | 8 × 256 KB | 20 MB | 95 W | Q1 2012 | $1107 |
| Xeon E5-2658 | 8 | 16 | 2.1 GHz | 2.4 GHz | 8 × 256 KB | 20 MB | 95 W | Q1 2012 | $1141 | |
| Xeon E5-2650L | 8 | 16 | 1.8 GHz | 2.3 GHz | 18 | 8 × 256 KB | 20 MB | 70 W | Q1 2012 | $1107 |
| Xeon E5-2660 | 8 | 16 | 2.2 GHz | 3.0 GHz | 30 | 8 × 256 KB | 20 MB | 95 W | Q1 2012 | $1329 |
| Xeon E5-2665 | 8 | 16 | 2.4 GHz | 3.1 GHz | 31 | 8 × 256 KB | 20 MB | 115 W | Q1 2012 | $1440 |
| Xeon E5-2667 | 6 | 12 | 2.9 GHz | 3.5 GHz | 29 | 6 × 256 KB | 15 MB | 130 W | Q1 2012 | $1552 |
| Xeon E5-2670 | 8 | 16 | 2.6 GHz | 3.3 GHz | 33 | 8 × 256 KB | 20 MB | 115 W | Q1 2012 | $1552 |
| Xeon E5-2680 | 8 | 16 | 2.7 GHz | 3.5 GHz | 35 | 8 × 256 KB | 20 MB | 130 W | Q1 2012 | $1723 |
| Xeon E5-2687W | 8 | 16 | 3.1 GHz | 3.8 GHz | 31 | 8 × 256 KB | 20 MB | 150 W | Q1 2012 | $1885 |
| Xeon E5-2689 | 8 | 16 | 2.6 GHz | 3.6 GHz | 36 | 8 × 256 KB | 20 MB | 115 W | Q1 2012 | |
| Xeon E5-2690 | 8 | 16 | 2.9 GHz | 3.8 GHz | 38 | 8 × 256 KB | 20 MB | 135 W | Q1 2012 | $2057 |
Server (Xeon E5-16xx/26xx v2)
Server processors are for the LGA 2011 socketXeon E5-16xx v2 (uniprocessor)
Xeon E5-26xx v2 (dual-processor)
Server (Xeon E5-16xx/26xx v3)
Server processors for the LGA 2011-v3 socket are listed in the tables below. As one of the significant changes from the previous generation, they support DDR4 memory.| Name | Cores | Threads | Frequency | Turbo Boost | Cache | Bus speed | TDP | DDR4 speed |
| Xeon E5-1680 v3 | 8 | 16 | 3.2 GHz | 3.8 GHz | 20 MB | 5 GT/s | 140 W | 1333/1600/1866/2133 |
| Xeon E5-1660 v3 | 8 | 16 | 3 GHz | 3.5 GHz | 20 MB | 5 GT/s | 140 W | 1333/1600/1866/2133 |
| Xeon E5-1650 v3 | 6 | 12 | 3.5 GHz | 3.8 GHz | 15 MB | 5 GT/s | 140 W | 1333/1600/1866/2133 |
| Xeon E5-1630 v3 | 4 | 8 | 3.7 GHz | 3.8 GHz | 10 MB | 5 GT/s | 140 W | 1333/1600/1866/2133 |
| Xeon E5-1620 v3 | 4 | 8 | 3.5 GHz | 3.6 GHz | 10 MB | 5 GT/s | 140 W | 1333/1600/1866/2133 |
| Xeon E5-1607 v3 | 4 | 4 | 3.1 GHz | 10 MB | 5 GT/s | 140 W | 1333/1600/1866 |
| Name | Cores | Threads | Frequency | Turbo Boost | Cache | Bus speed | TDP | DDR4 speed |
| Xeon E5-2699 v3 | 18 | 36 | 2.3 GHz | 3.6 GHz | 45 MB | 9.6 GT/s | 145 W | 1600/1866/2133 |
| Xeon E5-2698 v3 | 16 | 32 | 2.3 GHz | 3.6 GHz | 40 MB | 9.6 GT/s | 135 W | 1600/1866/2133 |
| Xeon E5-2697 v3 | 14 | 28 | 2.6 GHz | 3.6 GHz | 35 MB | 9.6 GT/s | 145 W | 1600/1866/2133 |
| Xeon E5-2695 v3 | 14 | 28 | 2.3 GHz | 3.3 GHz | 35 MB | 9.6 GT/s | 120 W | 1600/1866/2133 |
| Xeon E5-2690 v3 | 12 | 24 | 2.6 GHz | 3.5 GHz | 30 MB | 9.6 GT/s | 135 W | 1600/1866/2133 |
| Xeon E5-2683 v3 | 14 | 28 | 2 GHz | 3 GHz | 35 MB | 9.6 GT/s | 120 W | 1600/1866/2133 |
| Xeon E5-2680 v3 | 12 | 24 | 2.5 GHz | 3.3 GHz | 30 MB | 9.6 GT/s | 120 W | 1600/1866/2133 |
| Xeon E5-2670 v3 | 12 | 24 | 2.3 GHz | 3.1 GHz | 30 MB | 9.6 GT/s | 120 W | 1600/1866/2133 |
| Xeon E5-2660 v3 | 10 | 20 | 2.6 GHz | 3.3 GHz | 25 MB | 9.6 GT/s | 105 W | 1600/1866/2133 |
| Xeon E5-2650 v3 | 10 | 20 | 2.3 GHz | 3 GHz | 25 MB | 9.6 GT/s | 105 W | 1600/1866/2133 |
| Xeon E5-2640 v3 | 8 | 16 | 2.6 GHz | 3.4 GHz | 20 MB | 8 GT/s | 90 W | 1600/1866 |
| Xeon E5-2630 v3 | 8 | 16 | 2.4 GHz | 3.2 GHz | 20 MB | 8 GT/s | 85 W | 1600/1866 |
| Xeon E5-2620 v3 | 6 | 12 | 2.4 GHz | 3.2 GHz | 15 MB | 8 GT/s | 85 W | 1600/1866 |
| Xeon E5-2609 v3 | 6 | 6 | 1.9 GHz | 15 MB | 6.4 GT/s | 85 W | 1600 | |
| Xeon E5-2603 v3 | 6 | 6 | 1.6 GHz | 15 MB | 6.4 GT/s | 85 W | 1600 |
| Name | Cores | Threads | Frequency | Turbo Boost | Cache | Bus speed | TDP | DDR4 speed |
| Xeon E5-2667 v3 | 8 | 16 | 3.2 GHz | 3.6 GHz | 20 MB | 9.6 GT/s | 135 W | 1600/1866/2133 |
| Xeon E5-2643 v3 | 6 | 12 | 3.4 GHz | 3.7 GHz | 20 MB | 9.6 GT/s | 135 W | 1600/1866/2133 |
| Xeon E5-2637 v3 | 4 | 8 | 3.5 GHz | 3.7 GHz | 15 MB | 9.6 GT/s | 135 W | 1600/1866/2133 |
| Xeon E5-2623 v3 | 4 | 8 | 3 GHz | 3.5 GHz | 10 MB | 8 GT/s | 105 W | 1600/1866 |
| Name | Cores | Threads | Frequency | Turbo Boost | Cache | Bus speed | TDP | DDR4 speed |
| Xeon E5-2650L v3 | 12 | 24 | 1.8 GHz | 2.5 GHz | 30 MB | 9.6 GT/s | 65 W | 1600/1866/2133 |
| Xeon E5-2630L v3 | 8 | 16 | 1.8 GHz | 2.9 GHz | 20 MB | 8 GT/s | 55 W | 1600/1866 |
| Name | Cores | Threads | Frequency | Turbo Boost | Cache | Bus speed | TDP | DDR4 speed |
| Xeon E5-2687W v3 | 10 | 20 | 3.1 GHz | 3.5 GHz | 25 MB | 9.6 GT/s | 160 W | 1600/1866/2133 |
| Name | Cores | Threads | Frequency | Turbo Boost | Cache | Bus speed | TDP | DDR4 speed |
| Xeon E5-2658 v3 | 12 | 24 | 2.2 GHz | 2.9 GHz | 30 MB | 9.6 GT/s | 105 W | 1600/1866/2133 |
| Xeon E5-2648L v3 | 12 | 24 | 1.8 GHz | 2.5 GHz | 30 MB | 9.6 GT/s | 75 W | 1600/1866/2133 |
| Xeon E5-2628L v3 | 10 | 20 | 2 GHz | 2.5 GHz | 25 MB | 8 GT/s | 75 W | 1600/1866 |
| Xeon E5-2618L v3 | 8 | 16 | 2.3 GHz | 3.4 GHz | 20 MB | 8 GT/s | 75 W | 1600/1866 |
| Xeon E5-2608L v3 | 6 | 12 | 2 GHz | 15 MB | 6.4 GT/s | 52 W | 1600/1866 |