Intel Celeron 445 socket: Socket 771
The Intel Celeron 445 uses the Socket 771 socket. It is a 65 W single-core Conroe-CL server part at 1.866 GHz with 512 KB of L2 cache for single-CPU servers.
- Socket
- Socket 771
- Launched
- May 2008
- Cores and threads
- 1 and 1
- Base power
- 65 W
- Codename
- Conroe-CL
- Segment
- Server
- Family
- Intel Celeron
- Clocks
- 1.87 GHz
Intel Celeron 445 specifications
| Cores | 1 |
|---|---|
| Threads | 1 |
| Core architecture | Conroe-CL cores on 65 nm |
| Clocks | 1.866 GHz (no turbo) |
| Cache | 512 KB L2 |
| Processor base power (TDP) | 65 W |
| Manufacturing process | 65 nm |
| Memory support | DDR2 through the server board chipset |
| Front side bus | 1066 MT/s |
| PCI Express | PCIe from the board chipset |
| Integrated graphics | None |
| Multiplier | Locked |
| Package | LGA 771 |
Motherboard compatibility
Intel Celeron 445 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 Celeron 445 is
The Intel Celeron 445 is a 1.866 GHz single-core server processor from May 2008. It runs one Core core at 1.866 GHz with no turbo, so 1 core gives 1 thread. Cache is 512 KB of L2 on a 65 nm process. Power is rated at 65 W on Socket 771.
Conroe-CL is a Conroe variant in the LGA 771 package for single-CPU configurations only, unlike real Woodcrest Xeons that run in dual-socket boards. The 445 is one of three known Conroe-CL parts next to the Core 2 Duo E6305 and E6405, part SLAGH with a locked 7x multiplier on a 1066 MT/s bus. The task list carries a second entry dated August 2008 for the same 1.866 GHz part, which this page covers as one SKU.
Socket and motherboard compatibility
The 445 fits single-CPU Socket 771 server boards with a BIOS that lists Conroe-CL parts. It cannot run in dual-socket Woodcrest boards. Standard LGA 771 packages seat per the platform compatibility note. 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 in two channels.
A 1066 MT/s front side bus ties the CPU to the server chipset. PCIe slots hang off the chipset.
Cooling uses vendor qualified server heatsinks with threaded backplates for the 65 W envelope.
Upgrade paths
On Socket 771 the 445 is a niche single-core part, so the move is a Core 2 Duo E6305 or E6405 Conroe-CL where single-CPU boards list them, or a Woodcrest Xeon platform for real server work. Beyond Socket 771 a move to a newer Xeon platform needs new boards and memory.
Frequently asked questions
What socket does the Celeron 445 use?
Socket 771, in single-CPU server boards only.
How many cores does the Celeron 445 have?
One core and 1 thread at 1.866 GHz with 512 KB of L2 cache.
Can the Celeron 445 run in dual-socket boards?
No, Conroe-CL parts are single-CPU only despite the LGA 771 server package.
Sources and verification
Facts last checked against these sources on . Page last edited on .