Intel Xeon 5020 socket: Socket 771
The Intel Xeon 5020 uses the Socket 771 socket. It is a 95 W dual-core Dempsey server part at 2.5 GHz with Hyper-Threading and 4 MB of L2 cache for dual-processor racks.
- Socket
- Socket 771
- Launched
- 2006
- Cores and threads
- 2 and 4
- Base power
- 95 W
- Codename
- Dempsey
- Segment
- Server
- Family
- Intel Xeon
- Clocks
- 2.5 GHz
Intel Xeon 5020 specifications
| Cores | 2 |
|---|---|
| Threads | 4 |
| Core architecture | Dempsey cores on 65 nm |
| Clocks | 2.5 GHz (no turbo) |
| Cache | 4 MB L2 (2x2 MB) |
| Processor base power (TDP) | 95 W |
| Manufacturing process | 65 nm |
| Memory support | DDR2 FB-DIMMs through the server board chipset |
| Front side bus | 667 MT/s |
| PCI Express | PCIe from the board chipset |
| Integrated graphics | None |
| Multiplier | Locked |
| Package | LGA 771 |
Motherboard compatibility
Intel Xeon 5020 needs a motherboard with a Socket 771 socket. Chipset by chipset data for this codename is not recorded yet. See the Socket 771 chipset list and the board maker's CPU support list.
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 5020 is
The Intel Xeon 5020 is a 2.5 GHz dual-core server processor from 2006. It runs two NetBurst cores at 2.5 GHz with Hyper-Threading on both cores, so 2 cores give 4 threads. Cache is 4 MB of L2 as two 2 MB dies on a 65 nm process. Power is rated at 95 W on Socket 771.
The 5020 opened the Dempsey 5000 line on a 667 MT/s bus with a 15x multiplier. It exists because dual-processor buyers wanted 65 nm NetBurst dual cores with threads on the new LGA 771 socket at entry clocks.
Socket and motherboard compatibility
The 5020 fits dual-socket Socket 771 server boards with a BIOS that lists Dempsey parts. It suits entry racks qualified for 95 W dual cores. Check the server maker CPU list for the exact board and stepping. 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 667 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 95 W envelope in racks with directed airflow.
Upgrade paths
On Socket 771 the upgrade is the Xeon 5030 at 2.667 GHz with the same 4 MB cache at 95 W, or Woodcrest such as the 5110 at 1.6 GHz for Core efficiency. Beyond Socket 771 a move to a newer Xeon platform needs new boards and memory.
Frequently asked questions
What socket does the Xeon 5020 use?
Socket 771, in dual-socket server boards with Dempsey support.
How many cores does the Xeon 5020 have?
Two cores and 4 threads at 2.5 GHz with Hyper-Threading and 4 MB of L2 cache.
What memory works with the Xeon 5020?
DDR2 FB-DIMMs through the server board chipset.
Sources and verification
Facts last checked against these sources on . Page last edited on .