Intel Xeon L5430 socket: Socket 771
The Intel Xeon L5430 uses the Socket 771 socket. It is a 50 W quad-core Harpertown low-voltage server part at 2.667 GHz with 12 MB of L2 cache, the fastest efficient Harpertown.
- Socket
- Socket 771
- Launched
- September 2008
- Cores and threads
- 4 and 4
- Base power
- 50 W
- Codename
- Harpertown
- Segment
- Server
- Family
- Intel Xeon
- Clocks
- 2.67 GHz
Intel Xeon L5430 specifications
| Cores | 4 |
|---|---|
| Threads | 4 |
| Core architecture | Harpertown cores on 45 nm |
| Clocks | 2.667 GHz (no turbo) |
| Cache | 12 MB L2 (2x6 MB) |
| Processor base power (TDP) | 50 W |
| Manufacturing process | 45 nm |
| Memory support | DDR2 FB-DIMMs through the server board chipset |
| Front side bus | 1333 MT/s |
| PCI Express | PCIe from the board chipset |
| Integrated graphics | None |
| Multiplier | Locked |
| Package | LGA 771 |
Motherboard and chipset compatibility
Intel Xeon L5430 needs a motherboard with a Socket 771 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| Intel 5400 series | 5400 | 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 Socket 771.
Socket 771 at a glance
| Type | LGA, 771 contacts |
|---|---|
| Package size | 37.5 × 37.5 mm |
| Introduced | May 2006 |
| Memory | DDR2 and DDR3 through the server board chipset |
| Cooler mounting holes | Board specific (server heatsink) |
What the Xeon L5430 is
The Intel Xeon L5430 is the fastest low-voltage Harpertown server quad core, a 2.667 GHz part from September 2008. It runs four Core cores at 2.667 GHz with no turbo, so 4 cores give 4 threads. Cache is 6 MB of L2 per die, 12 MB total, on a 45 nm process. Power is rated at 50 W on Socket 771.
Harpertown packs two Wolfdale dies with a 1333 MT/s front side bus for dual-processor servers. The L5430 exists because dense racks wanted near-standard speed inside a 50 W envelope as virtualization density grew.
Socket and motherboard compatibility
The L5430 fits dual-socket Socket 771 server boards with a BIOS that lists late-2008 low-voltage Harpertown parts. It suits dense chassis qualified for 50 W quads. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.
Memory, PCIe and cooling
Memory is DDR2 FB-DIMMs through the server board chipset.
A 1333 MT/s front side bus ties the CPU to the server chipset. PCIe slots hang off the chipset.
Cooling uses vendor qualified server heatsinks for the 50 W envelope in dense chassis with directed airflow.
Upgrade paths
On Socket 771 the L5430 is the efficient ceiling, so the moves are the Intel Xeon L5420 at 2.5 GHz for a cheaper 50 W part, or standard-power quads such as the Intel Xeon X5470 at 3.333 GHz where power allows. Beyond Socket 771 a move to a newer Xeon platform needs new boards and memory.
Frequently asked questions
What socket does the Xeon L5430 use?
Socket 771, in dual-socket server boards with low-voltage support.
How many cores does the Xeon L5430 have?
Four cores and 4 threads at 2.667 GHz with 6 MB of L2 per die.
What memory works with the Xeon L5430?
DDR2 FB-DIMMs through the server board chipset.
Sources and verification
Facts last checked against these sources on . Page last edited on .