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Intel Celeron D Processor
By Stephen Bucaro
The Celeron processor is a budget processor offering moderate performance at an
affordable price. This processor is suitable for use in notebook and desktop
computers running home-office applications and providing access to the Internet.
It is not be recommended for use in a high performance game machine or a heavily
accessed web server.
 PC Processor Fundamentals
The Celeron D processor, released in December 2005, is based on the Prescott core.
It runs at clock speeds up to 3.33 GHz, has a 533MHz Front Side Bus Speed, a
16kb L1 cache, and an integrated 256K L2 cache. Celeron D models 347 and higher
use the 65nm Cedar Mill core and have a 12KB + 16KB (Data + Instructions) L1 Cache
and a 512KB L2 cache.
Pins on bottom of processor - Contact pads on bottom of processor
This processor uses either the socket 478 or the LGA775 Socket. The two socket
types are not interchangeable because the newer 775-pin Land Grid Array has no pins
on the processor. Gold contact pads provide the connection between the processor
and the socket on the motherboard.
Some Celeron D models feature Intel's Extended Memory 64 Technology
which allows them to access larger amounts of memory and support 64-bit
extended operating systems. Some models, including those with J in their model
number, feature the Execute Disable Bit (XDB), which prevents viruses from
exploiting buffer overrun vulnerabilities.
Celeron D Processors
| Model | Process | L2 Cache | Clock Speed | EM64T | XDB |
| 310 | 90 nm | 256 KB | 2.13 GHz | | |
| 315 | 90 nm | 256 KB | 2.26 GHz | | |
| 320 | 90 nm | 256 KB | 2.40 GHz | | |
| 325 | 90 nm | 256 KB | 2.53 GHz | | |
| 325J | 90 nm | 256 KB | 2.53 GHz | | X |
| 326 | 90 nm | 256 KB | 2.53 GHz | X | X |
| 330 | 90 nm | 256 KB | 2.66 GHz | | |
| 330J | 90 nm | 256 KB | 2.66 GHz | | X |
| 331 | 90 nm | 256 KB | 2.66 GHz | X | X |
| 335 | 90 nm | 256 KB | 2.80 GHz | | |
| 335J | 90 nm | 256 KB | 2.80 GHz | | X |
| 336 | 90 nm | 256 KB | 2.80 GHz | X | X |
| 340 | 90 nm | 256 KB | 2.93 GHz | | |
| 340J | 90 nm | 256 KB | 2.93 GHz | | X |
| 341 | 90 nm | 256 KB | 2.93 GHz | X | X |
| 345 | 90 nm | 256 KB | 3.06 GHz | | |
| 345J | 90 nm | 256 KB | 3.06 GHz | | X |
| 346 | 90 nm | 256 KB | 3.06 GHz | X | X |
| 347 | 65 nm | 512 KB | 3.06 GHz | X | X |
| 350 | 90 nm | 256 KB | 3.20 GHz | | |
| 351 | 90 nm | 256 KB | 3.20 GHz | X | X |
| 352 | 65 nm | 512 KB | 3.20 GHz | X | X |
| 355 | 90 nm | 256 KB | 3.33 GHz | X | X |
| 356 | 65 nm | 512 KB | 3.33 GHz | X | X |
Don't confuse the Celeron D with processors without the "D", which are based on the Northwood
core and have only 8kb of L1 cache and a 128 KB L2 cache.
Note that, unlike the Pentium D, the Celeron D is not a dual core processor.
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