All Celeron Models
By Rafael Otto Coelho and Gabriel Torres and Cássio Lima on September 9, 2008 Page 3 of 10

Mendocino (Celeron A)

The original Celeron was terrible. Because of no L2 cache present, its performance was less than tolerable. Thus, Intel decided to launch Celeron A, which was different from the original Celeron on its L2 cache with 128KB running at the processor speed. Actually, Celeron A was the first processor for PCs to have a L2 cache integrated in the processor.

The first version of Celeron A worked with a clock of 300 MHz. In order to differentiate from the original Celeron of 300 MHz (with no L2 cache), Intel added the letter “A” after the number. Therefore, the Celeron A 300MHz version is known as 300A.

Figure 2: Detail of the Celeron 300A marking, with 128KB on-die L2 cache.

Main features of Celeron A were:

  • Based on Pentium II with Deschutes core
  • Manufacturing process: 0.25 μm
  • L1 cache: 32 KB total, 16 KB for instructions and 16 KB for data
  • L2 cache: 128 KB
  • External clock rate: 66 MHz
  • Packaging: SEPP
  • Socket: Slot 1

Available models of Celeron A are listed on the chart below. TDP stands for Thermal Design Power and indicates the CPU maximum thermal dissipation.

Model 

Internal Clock

Voltage 

 TDP

SL2WM 

300 MHz

2 V

19.05 W 

SL32A 

300 MHz

2 V

19.05 W 

SL32B 

333 MHz

2 V

20.94 W 

SL2WN 

333 MHz

2 V

20.94 W 

SL376 

366 MHz

2 V

21.7 W 

SL37Q 

366 MHz

2 V

21.7 W 

SL37V 

400 MHz

2 V

23.7 W 

SL39Z 

400 MHz

2 V

23.7 W 


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