Intel Xeon E5-1428L socket: LGA 1356
The Intel Xeon E5-1428L uses the LGA 1356 socket. It is a 60 W six core Sandy Bridge-EN server part with 12 threads at 1.8 GHz.
- Socket
- LGA 1356
- Launched
- May 2012
- Cores and threads
- 6 and 12
- Base power
- 60 W
- Codename
- Sandy Bridge-EN
- Segment
- Server
- Family
- Intel Xeon E5
- Clocks
- 1.8 GHz
Intel Xeon E5-1428L specifications
| Cores | 6 |
|---|---|
| Threads | 12 |
| Core architecture | Sandy Bridge-EN cores on 32 nm |
| Clocks | 1.8 GHz (no turbo) |
| Cache | 15 MB |
| Processor base power (TDP) | 60 W |
| Manufacturing process | 32 nm |
| Memory support | DDR3-800 to 1333, three channels, ECC |
| PCI Express | PCIe 3.0, 24 lanes |
| Integrated graphics | None (server board graphics) |
| Multiplier | Locked |
| Package | FCLGA1356 (45 × 42.5 mm) |
Motherboard and chipset compatibility
Intel Xeon E5-1428L needs a motherboard with a LGA 1356 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| C600 series | C602 | 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 1356.
LGA 1356 at a glance
| Type | LGA, 1,356 contacts |
|---|---|
| Package size | 45 × 42.5 mm |
| Introduced | May 2012 |
| Memory | DDR3-800 to 1600 with ECC, three channels |
| Cooler mounting holes | Board specific (server heatsink) |
What the Xeon E5-1428L is
Intel Xeon E5-1428L is a six core Sandy Bridge-EN server processor that Intel released in May 2012 for single socket low power servers. It runs at a fixed 1.8 GHz with no turbo, with 15 MB cache and Hyper-Threading for 12 threads. Power is rated at 60 W on a 32 nm process. The L suffix marks the low power tune within the E5-1400 line for single socket boards.
No integrated graphics are present, so server boards provide basic display through a management controller. Memory is DDR3 at 800, 1066 or 1333 MT/s across three channels with ECC, and the chip provides 24 PCIe 3.0 lanes plus a single QPI link that stays unused on single socket boards. Scalability is one socket only.
Low fixed clocks with six cores suit threaded file, web and virtualization hosts that value watts over bursts. Boards pair it with registered DIMMs across three channels and hardware RAID. The How to find your CPU socket type guide shows how to confirm the socket before ordering a spare.
Socket and motherboard compatibility
The Xeon E5-1428L fits LGA 1356 in FCLGA1356 form with 1,356 lands. The match is the C600 series platform controller, principally C602 on Romley-EN single socket boards. Intel lists C606, C608, C602J and C604 class boards with Socket B2 for the E5-1400 and E5-2400 families, and the board support list for this SKU confirms C600 compatibility.
Power at 60 W suits dense single socket chassis with vendor qualified heatsinks. The board BIOS must list the exact E5-1428L string with Sandy Bridge-EN microcode. The Socket vs chipset: what decides whether a CPU works guide covers server pairing rules.
Memory, PCIe and cooling
Memory support is DDR3 at 800, 1066 or 1333 MT/s, three channels, with ECC and registered DIMMs on Xeon boards. Balance DIMMs across all three channels for bandwidth, since single channel operation starves six cores. Board manuals set the population rules per chassis.
PCI Express is 24 lanes of PCIe 3.0 from the CPU in x4, x8 and x16 splits for networking, storage controllers and accelerators. Single socket boards devote lanes to dual Ethernet and RAID rather than graphics. I/O placement is simple with one socket and no NUMA hop.
Cooling uses vendor qualified server heatsinks for 60 W with chassis directed airflow. There is no retail mount, so heatsink choice follows the system vendor list. Keep filters clean, since dense chassis throttle quickly when airflow drops.
Upgrade paths
Within LGA 1356 the Xeon E5-1428L can move to faster Sandy Bridge-EN or Ivy Bridge-EN parts on the same board, where the vendor list and power budget allow it. A v2 comparison on the same socket is Intel Xeon E5-1428L v2 with higher clocks on 22 nm. Memory and storage carry over in most swaps.
A platform move means a new server board with a newer socket and DDR4 memory. Keep the current node for low power threaded duty where six Sandy cores still meet the load.
Frequently asked questions
What socket does the Intel Xeon E5-1428L use?
It uses LGA 1356. C600 series boards with Socket B2 carry it.
Does the Xeon E5-1428L have turbo boost?
No. It runs at a fixed 1.8 GHz with 12 threads.
What memory does the Xeon E5-1428L use?
DDR3 at 800, 1066 or 1333 MT/s, three channels, with ECC and registered DIMMs.
Is the Xeon E5-1428L for single or dual socket boards?
Single socket only. Dual capable E5-2400 parts on the same socket allow two sockets.
Sources and verification
Facts last checked against these sources on . Page last edited on .