Intel Xeon L3406 socket: LGA 1156
The Intel Xeon L3406 uses the LGA 1156 socket. It is a 30 W dual core Clarkdale server part at 2.266 GHz with Turbo Boost to 2.533 GHz, Hyper-Threading and 4 MB of L3 cache.
- Socket
- LGA 1156
- Launched
- March 16, 2010
- Cores and threads
- 2 and 4
- Base power
- 30 W
- Codename
- Clarkdale
- Segment
- Server
- Family
- Intel Xeon L
- Clocks
- 2.27 / 2.53 GHz
Intel Xeon L3406 specifications
| Cores | 2 |
|---|---|
| Threads | 4 |
| Core architecture | Clarkdale cores on 32 nm |
| Clocks | 2.266 GHz base, 2.533 GHz Turbo Boost |
| Cache | 4 MB L3 (shared) |
| Processor base power (TDP) | 30 W |
| Manufacturing process | 32 nm CPU, 45 nm graphics |
| Memory support | DDR3-1066 ECC, two channels |
| PCI Express | PCIe 2.0 x16 from the package |
| Integrated graphics | HD Graphics (on package) |
| Multiplier | Locked |
| Package | LGA1156 |
Motherboard and chipset compatibility
Intel Xeon L3406 needs a motherboard with a LGA 1156 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| 5 series with graphics | H55, H57, Q57 | Works out of the box |
| P55 performance | P55 | Works out of the box Onboard video ports stay dark on P55. Use a separate graphics card. |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for LGA 1156.
LGA 1156 at a glance
| Type | LGA, 1,156 contacts |
|---|---|
| Package size | n/a |
| Introduced | September 2009 |
| Memory | DDR3-1066 and 1333, two channels, up to 16 GB |
| Cooler mounting holes | 75 × 75 mm |
What the Xeon L3406 is
The Intel Xeon L3406 is a dual core Clarkdale server processor from March 2010. It runs two Westmere cores at 2.266 GHz base with Turbo Boost to 2.533 GHz, with Hyper-Threading for four threads. The pair shares 4 MB of L3 cache on a 32 nm CPU die. Power is rated at 30 W on LGA 1156.
The L3406 is the threaded low voltage Clarkdale Xeon, matching desktop clocks with server features at 30 W. Against the L3403 it adds Hyper-Threading and turbo for bursty server tasks. ECC UDIMMs guard data where boards wire them.
Memory is DDR3-1066 in two channels.
Socket and motherboard compatibility
The Xeon L3406 fits LGA 1156 with 1156 lands. Server boards with 3400 series firmware boot it directly.
The socket table covers Clarkdale natively. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules, and the Intel Pentium G6950 page shows the desktop twin.
Memory, PCIe and cooling
Memory is DDR3-1066 ECC UDIMMs in two channels where boards wire them.
PCIe 2.0 x16 comes from the package.
Cooling is a 1U or tower server heatsink rated for 30 W.
Upgrade paths
On LGA 1156 the server upgrade is an X3400 quad on the same board. Beyond LGA 1156 a move to Sandy Bridge Xeon E3 needs a new board.
Frequently asked questions
What socket does the Xeon L3406 use?
LGA 1156, the 1156-land package on server boards with 3400 series firmware.
How many cores does the Xeon L3406 have?
Two cores and four threads at 2.266 GHz base with Turbo Boost to 2.533 GHz, with 4 MB of shared L3 cache.
What memory works with the Xeon L3406?
DDR3-1066 ECC in two channels where boards wire it.
Sources and verification
Facts last checked against these sources on . Page last edited on .