AMD Athlon 64 X2 4000+ socket: Socket AM2
The AMD Athlon 64 X2 4000+ uses the Socket AM2 socket. It is an 89 W dual-core Windsor desktop part at 2 GHz with 2x1 MB of L2 cache for multitasking towers.
- Socket
- Socket AM2
- Launched
- May 2006
- Cores and threads
- 2 and 2
- Default TDP
- 89 W
- Codename
- Windsor
- Segment
- Desktop
- Family
- AMD Athlon 64 X2
- Clocks
- 2.0 GHz
AMD Athlon 64 X2 4000+ specifications
| Cores | 2 |
|---|---|
| Threads | 2 |
| Core architecture | Windsor cores on 90 nm |
| Clocks | 2 GHz (no turbo) |
| Cache | 2 MB L2 (2x1 MB) |
| Default TDP | 89 W |
| Manufacturing process | 90 nm |
| Memory support | DDR2-667 and DDR2-800, two channels |
| PCI Express | PCIe from the board chipset |
| Integrated graphics | None (board video where fitted) |
| Multiplier | Locked |
| Package | Socket AM2 (940 pins) |
Motherboard and chipset compatibility
AMD Athlon 64 X2 4000+ needs a motherboard with a Socket AM2 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| 700 series | 770, 780G | 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 AM2.
Socket AM2 at a glance
| Type | PGA, 940 contacts |
|---|---|
| Package size | n/a |
| Introduced | May 2006 |
| Memory | DDR2-667 and DDR2-800, two channels |
| Cooler mounting holes | 48 × 96 mm |
What the Athlon 64 X2 4000+ is
The AMD Athlon 64 X2 4000+ is a 2 GHz dual-core desktop processor from May 2006. It runs two K8 cores at 2 GHz with no turbo, so 2 cores give 2 threads. Cache is 1 MB of L2 per core on a 90 nm process. Power is rated at 89 W on Socket AM2.
The Windsor 4000+ paired 2 GHz clocks with the large 2 MB total cache on a 1000 MT/s HyperTransport link with a 10x multiplier at about 328 dollars launch price. It exists because buyers wanted the full 1 MB per core cache at entry clocks without moving to higher bins.
Socket and motherboard compatibility
The 4000+ drops into Socket AM2 boards with DDR2 memory and a BIOS that lists Windsor dual cores. It pairs with mainstream AM2 chipsets contemporary with the May 2006 launch. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.
Memory, PCIe and cooling
Memory is DDR2-667 and DDR2-800 in two channels through the on-chip controller.
HyperTransport at 1000 MT/s links the CPU to the chipset. PCIe slots hang off the chipset.
Cooling is any 89 W rated AM2 heatsink on the 48 × 96 mm mount, with CoolnQuiet trimming draw at idle.
Upgrade paths
On Socket AM2 the upgrade is the AMD Athlon 64 X2 4400+ at 2.2 GHz with 2x1 MB in the same 89 W class, or the AMD Athlon 64 X2 4000+ EE at 2 GHz for the same cache at 65 W. Beyond AM2 a move to AM2+ or AM3 needs a new board for Phenom class parts.
Frequently asked questions
What socket does the Athlon 64 X2 4000+ use?
Socket AM2, on DDR2 boards with a Windsor-aware BIOS.
How many cores does the Athlon 64 X2 4000+ have?
Two cores and 2 threads at 2 GHz with 1 MB of L2 per core.
What memory works with the Athlon 64 X2 4000+?
DDR2 in two channels through the on-chip controller.
Sources and verification
Facts last checked against these sources on . Page last edited on .