Intel Xeon MP 3.66 socket: Socket 604
The Intel Xeon MP 3.66 uses the Socket 604 socket. It is a 135 W single-core Cranford server part at 3.667 GHz with Hyper-Threading and 1 MB of L2 cache for multiprocessor racks.
- Socket
- Socket 604
- Launched
- March 2005
- Cores and threads
- 1 and 2
- Base power
- 135 W
- Codename
- Cranford
- Segment
- Server
- Family
- Intel Xeon
- Clocks
- 3.67 GHz
Intel Xeon MP 3.66 specifications
| Cores | 1 |
|---|---|
| Threads | 2 |
| Core architecture | Cranford cores on 90 nm |
| Clocks | 3.667 GHz (no turbo) |
| Cache | 1 MB L2 |
| Processor base power (TDP) | 135 W |
| Manufacturing process | 90 nm |
| Memory support | DDR2 through the server board chipset |
| Front side bus | 667 MT/s |
| PCI Express | PCIe from the board chipset |
| Integrated graphics | None |
| Multiplier | Locked |
| Package | Socket 604 (604-pin FC-mPGA) |
Motherboard compatibility
Intel Xeon MP 3.66 needs a motherboard with a Socket 604 socket. Chipset by chipset data for this codename is not recorded yet. See the Socket 604 chipset list and the board maker's CPU support list.
Socket 604 at a glance
| Type | PGA, 604 contacts |
|---|---|
| Package size | n/a |
| Introduced | 2002 |
| Memory | DDR2 memory through the Caneland board chipset |
| Cooler mounting holes | Board specific (server heatsink) |
What the Xeon MP 3.66 is
The Intel Xeon MP 3.66 is a 3.667 GHz multiprocessor single-core server processor from March 2005. It runs one NetBurst core at 3.667 GHz with Hyper-Threading, so 1 core gives 2 threads. Cache is 1 MB of L2 on a 90 nm process. Power is rated at 135 W on Socket 604.
The MP 3.66 topped the Cranford line with a 667 MT/s bus and a 22x multiplier at about 963 dollars launch price. The table leaves this bin blank and cpu_list gives 135 W, matching the higher-clock Cranford class above the 110 W 3.16 part. It exists because flagship multiprocessor servers wanted the fastest Cranford clocks with threads.
Socket and motherboard compatibility
The MP 3.66 fits Socket 604 multiprocessor server boards with a BIOS that lists late Cranford parts. It suits flagship quad-processor chassis qualified for 135 W parts. 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 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 135 W envelope in multiprocessor chassis with directed airflow.
Upgrade paths
On Socket 604 the upgrade is Potomac parts with L3 cache on the same boards, or the Intel Xeon MP 3.50 at 3.5 GHz for a lower cost. Beyond Socket 604 a move to a newer Xeon platform needs new boards and memory.
Frequently asked questions
What socket does the Xeon MP 3.66 use?
Socket 604, in multiprocessor server boards with late Cranford support.
How many cores does the Xeon MP 3.66 have?
One core and 2 threads at 3.667 GHz with Hyper-Threading and 1 MB of L2 cache.
What memory works with the Xeon MP 3.66?
DDR2 through the server board chipset.
Sources and verification
Facts last checked against these sources on . Page last edited on .