Intel Xeon E7-4807 socket: LGA 1567

What the Xeon E7-4807 is

Intel Xeon E7-4807 is a six core Westmere-EX server processor that Intel released in April 2011 for four socket boards. It runs at a fixed 1.86 GHz with no turbo and includes Hyper-Threading, so 6 cores give 12 threads. Cache is 18 MB Intel Smart Cache. Power is 95 W on a 32 nm process with 2,600 million transistors on a 513 mm2 die.

The fixed clock and 95 W envelope suit cost sensitive four socket nodes. Virtual farms use 48 threads per board with buffered memory. The lack of turbo keeps power draw flat under load.

There is no integrated graphics on this die. Each socket carries four DDR3 channels at 800 MT/s with ECC. The chip launched in the second quarter of 2011.

Socket and motherboard compatibility

The Xeon E7-4807 fits LGA 1567 in FCLGA1567 form. Four socket server boards with the Intel 7500 chipset carry it. The board BIOS must list the exact E7-4807 string.

CPUs connect over QuickPath Interconnect at 4.8 GT/s, while PCIe comes from the chipset for network and storage. A board that lists E7-4800 strings is the safe choice.

Memory, PCIe and cooling

Memory support is DDR3-800, ECC registered with buffering, four channels per socket. Population rules are strict: fill risers in matched sets per the board manual. Capacity follows the board design.

QPI links run at 4.8 GT/s between sockets. PCIe comes from the Intel 7500 chipset rather than the processor.

Cooling uses board specific server heatsinks under data center airflow. Confirm ECC logs stay clear in always on service.

Upgrade paths

On LGA 1567 the E7-4807 can move to the E7-4820 for higher clocks with turbo on the same four socket board. Memory and storage carry over where the board lists both strings. A same family reference is Intel Xeon E7-4820.

A platform move to a current server socket needs new boards and DDR4 memory. Keep the E7 board for entry virtualization duty.