| 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 | Core i7 (3xxx series) Intel Xeon (E5 series) Ivy Bridge-E |
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This article is part of the CPU socket series |
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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 2,011 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 x4 PCIe interface replaces the DMI interface. As with its predecessor LGA1366 there is no provision for integrated graphics.
The socket was released on 14 November 2011, and supports Sandy Bridge E-series processors with 4 memory channels of DDR3-1600,[2] as well as, 40× PCIe 2.0 or 3.0 lanes;[3] The Extreme Edition processor supports six cores with 15 MB of shared L3 cache on a ring bus and a quad-channel DDR3 memory controller. LGA 2011 motherboards have either 4 or 8 DIMM slots which allows for a maximum support of 32GB, 64GB or 128GB of memory.[4] Socket R also has to ensure platform scalability beyond eight cores and 20 MB of cache.[5]
LGA 2011 will also be compatible with future Ivy Bridge-E processors.[6]
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Information for the Intel X79 chipset can be found in the table below.
| Name | X79[3] |
|---|---|
| CPU Support | Sandy Bridge-E, Ivy Bridge-E[6] |
| Maximum DDR3 slots | 8 |
| Overclocking | Yes |
| Embedded GPU | No |
| RAID 0/1/5/10 | Yes |
| Maximum USB Ports (USB 3.0) | 14 (0)[7] |
| Maximum SATA Ports (SATA 3.0) | 4 (2)[7] |
| Main PCIe configuration | 40 × PCIe lanes[8] |
| Secondary PCIe | 8 × PCIe 2.0 (5GT/s) |
| PCI | No |
| Intel Rapid Storage Technology | Yes |
| Smart Response Technology | No |
| Release Date | 14 November 2011 |
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 | TDP | Release Date[11] | Price (US)[12] |
|---|---|---|---|---|---|---|---|---|---|---|
| Core i7 Extreme 3980X[13] | 6 | 12 | 3.40-3.50Ghz | 4.00-4.10Ghz | Unlocked | 6 x 256KB | 15MB | 130W | TBA | TBA |
| Core i7 Extreme 3960X | 6 | 12 | 3.30GHz | 3.90GHz | Unlocked | 6 x 256KB | 15MB | 130W | 14 November 2011 | $990[14] |
| Core i7 3930K | 6 | 12 | 3.20GHz | 3.80GHz | Unlocked | 6 x 256KB | 12MB | 130W | 14 November 2011 | $555[14] |
| Core i7 3820 | 4 | 8 | 3.60GHz | 3.90GHz | Partially Unlocked (43x)1 | 4 x 256KB | 10MB | 130W | Q1 2012 | $285 [15] |
1 The X79 chipset allows for increasing the base clock(bclk), Intel calls it CPU Strap, by 1.00x, 1.25x, 1.66x or 2.50x. The CPU frequency is derived by the bclk times the CPU multiplier.
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)[16] |
|---|---|---|---|---|---|---|---|---|---|---|
| Xeon E5 1660 | 6 | 12 | 3.30GHz | 3.90GHz | ? | 6 x 256KB | 15MB | 130W | Q1 2012[17] | $1080 |
| Xeon E5 1650 | 6 | 12 | 3.20GHz | 3.80GHz | ? | 6 x 256KB | 12MB | 130W | Q1 2012 | $583 |
| Xeon E5 1620 | 4 | 8 | 3.60GHz | 3.90GHz | ? | 4 x 256KB | 10MB | 130W | Q1 2012 | $294 |
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