Intel Xeon E7-4820 socket: LGA 1567
The Intel Xeon E7-4820 uses the LGA 1567 socket. It is a 105 W eight core Westmere-EX server part at 2.0 GHz with turbo to 2.27 GHz for four socket boards.
- Socket
- LGA 1567
- Launched
- April 2011
- Cores and threads
- 8 and 16
- Base power
- 105 W
- Codename
- Westmere-EX
- Segment
- Server
- Family
- Intel Xeon E7
- Clocks
- 2.0 / 2.27 GHz
Intel Xeon E7-4820 specifications
| Cores | 8 |
|---|---|
| Threads | 16 |
| Core architecture | Westmere-EX cores on 32 nm |
| Clocks | 2.0 GHz base, 2.27 GHz turbo |
| Cache | 18 MB Intel Smart Cache (L3) |
| Processor base power (TDP) | 105 W |
| Manufacturing process | 32 nm |
| Memory support | DDR3, ECC registered with buffering, four channels per socket |
| QPI links | 2 links, 5.86 GT/s |
| PCI Express | No lanes from the CPU; I/O via Intel 7500 chipset |
| Integrated graphics | None (server part) |
| Multiplier | Locked |
| ECC memory | Supported |
| Package | FCLGA1567 |
Motherboard and chipset compatibility
Intel Xeon E7-4820 needs a motherboard with a LGA 1567 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| 7500 Boxboro | 7500 | Works out of the box |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for LGA 1567.
LGA 1567 at a glance
| Type | LGA, 1,567 contacts |
|---|---|
| Package size | n/a |
| Introduced | March 2010 |
| Memory | DDR3 ECC registered with buffering, four channels per socket |
| Cooler mounting holes | Board specific (server heatsink) |
What the Xeon E7-4820 is
Intel Xeon E7-4820 is an eight core Westmere-EX server processor that Intel released in April 2011 for four socket boards. It runs at 2.0 GHz base with turbo to 2.27 GHz and includes Hyper-Threading, so 8 cores give 16 threads. Cache is 18 MB Intel Smart Cache. Power is 105 W on a 32 nm process.
Four socket boards hold 64 threads with this chip for mid size virtual farms. The smaller cache suits cost sensitive nodes. Fixed board BOMs keep fleet behavior stable.
There is no integrated graphics on this die. Each socket carries DDR3 channels with ECC. The chip launched in the second quarter of 2011.
Socket and motherboard compatibility
The Xeon E7-4820 fits LGA 1567 in FCLGA1567 form. Four socket server boards with the Intel 7500 chipset carry it. The board BIOS must list the exact E7-4820 string.
CPUs connect over QuickPath Interconnect at 5.86 GT/s, while PCIe comes from the chipset. A board that lists E7-4800 strings is the safe choice for four socket builds.
Memory, PCIe and cooling
Memory support is DDR3, ECC registered with buffering, four channels per socket. Fill risers in matched sets per the board manual. Large boards reach high totals with all sockets filled.
QPI links run at 5.86 GT/s between sockets. PCIe comes from the Intel 7500 chipset rather than the processor.
Cooling uses board specific server heatsinks with M3 screws under data center airflow. Match the heatsink to the chassis direction.
Upgrade paths
On LGA 1567 the E7-4820 can move to the E7-4830 for more cache on the same four socket board. Memory and storage carry over where the board lists both strings. A same family reference is Intel Xeon E7-2820.
A platform move to a current server socket needs new boards and DDR4 memory. Keep the E7 board for virtualization duty.
Frequently asked questions
What socket does the Intel Xeon E7-4820 use?
It uses LGA 1567 on four socket server boards.
Does the Xeon E7-4820 have Hyper-Threading?
Yes. Eight cores give 16 threads.
What memory does the Xeon E7-4820 use?
DDR3 ECC registered with buffering, four channels per socket.
What is the upgrade path from a Xeon E7-4820?
The E7-4830 for more cache on the same four socket board.
Sources and verification
- Products formerly Westmere EX (Intel ARK, E7-4820 2.0 GHz turbo 2.27 18MB 105W Q2-11)
- Westmere (Wikipedia, E7-4820 8 cores 2.0 GHz 18MB Apr 2011)
Facts last checked against these sources on . Page last edited on .