Intel Xeon X5470 socket: Socket 771
The Intel Xeon X5470 uses the Socket 771 socket. It is a 120 W quad-core Harpertown server part at 3.333 GHz with 12 MB of L2 cache for fast dual-socket racks.
- Socket
- Socket 771
- Launched
- September 2008
- Cores and threads
- 4 and 4
- Base power
- 120 W
- Codename
- Harpertown
- Segment
- Server
- Family
- Intel Xeon
- Clocks
- 3.33 GHz
Intel Xeon X5470 specifications
| Cores | 4 |
|---|---|
| Threads | 4 |
| Core architecture | Harpertown cores on 45 nm |
| Clocks | 3.333 GHz (no turbo) |
| Cache | 12 MB L2 (2x6 MB) |
| Processor base power (TDP) | 120 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 X5470 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 X5470 is
The Intel Xeon X5470 is a fast 3.333 GHz server quad core from September 2008. It runs four Core cores at 3.333 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 120 W on Socket 771.
Harpertown packs two Wolfdale dies with a 1333 MT/s front side bus for dual-processor servers. The X5470 exists because database and HPC racks wanted near-top per-core speed without the 150 W envelope of the X5492.
Socket and motherboard compatibility
The X5470 fits dual-socket Socket 771 server boards with a BIOS that lists late-2008 high-power Harpertown parts and robust voltage regulation. Not every 771 board feeds 120 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 must be rated for 120 W on server heatsinks with threaded backplates, since sustained loads hold all four cores at full speed.
Upgrade paths
On Socket 771 the upgrade is the Intel Xeon X5492 at 3.4 GHz for the Harpertown ceiling, or the Intel Xeon L5430 at 2.667 GHz and 50 W for efficient racks. Beyond Socket 771 a move to a newer Xeon platform needs new boards and memory.
Frequently asked questions
What socket does the Xeon X5470 use?
Socket 771, in dual-socket server boards rated for 120 W quads.
How many cores does the Xeon X5470 have?
Four cores and 4 threads at 3.333 GHz with 6 MB of L2 per die.
What memory works with the Xeon X5470?
DDR2 FB-DIMMs through the server board chipset.
Sources and verification
Facts last checked against these sources on . Page last edited on .