Celeron: How The Models Size Up Against One Another, Continued
The Coppermine core then moved in at 533 MHz and brought with it a veritable flood of models. Intel managed to extract up to 1100 MHZ from this core technology, bringing a total of 14 processors onto the market and causing confusion primarily among private customers, since it was often not clear to the non-techie which processor worked at which FSB speed.
The Tualatin core gave a new lease on life to the Pentium III architecture. With 512 kB cache and various improvements, the Tualatin was able challenge the Athlon. The Celeron also benefited from this core, albeit with only 128 kB cache, and also with only the usual 100 MHz FSB instead of a possible 133 MHz. But Intel was concentrating all its efforts on the Pentium 4 - knowing very well that the route via the highest possible clock speeds could ensure domination.
| Processor | Celeron300 - 533 | Celeron533A - 1100 | Celeron900 - 1400 | Celeron1700 & 1800 |
|---|---|---|---|---|
| Name | Mendocino | Coppermine | Tualatin | Willamette |
| Process | 0.25 µm | 0.18 µm | 0.13 µm | 0.18 µm |
| CPU Plattform | Socket 370 | Socket 370 | Socket 370 | Socket 478 |
| CPU Front Side Bus | 66 MHz | 66/100 MHz | 100 MHz | 400 MHz quad-pumped |
| L1 Cache | 32 kB | 32 kB | 32 kB | 8 kB |
| L1 Cache mit | CPU Clock | CPU Clock | CPU Clock | CPU Clock |
| L2 Interface | 128 Bit | 128 Bit | 256 Bit | 256 Bit |
| L2 Cache | 128 kB | 128 kB | 256 kB | 128 kB |
| L2 Clock | CPU Clock | CPU Clock | CPU Clock | CPU Clock |
| Architecture and RAM | ||||
| Memory type | SDRAM | SDRAM, DDR-SDRAM | SDRAM, DDR-SDRAM | SDRAM, DDR-SDRAM, RDRAM |
| Memory clock | 66 MHz | 66, 100, 133 MHz | 100, 133, 266 (DDR) MHz | SDRAM: 100, 133, 166 MHzRDRAM: 400 MHz, 533 MHz |
| Chipsets | Intel 440LX | Intel 440LX, 440BX, i810, i815VIA Apollo Pro, Apollo Pro 133/A/TSiS 633/635 | Intel 815EPTVIA Apollo 133/TApollo Pro 266/TSiS 633/635T | Intel 850, 850EIntel 845/DIntel 845E, 845GIntel 845PE, 845GE, 845GVSiS645/DX, 648VIA P4X266/A, P4X333, P4X400 |
| Command Extensions | ||||
| MMX | yes | yes | yes | yes |
| 3D Now | no | no | no | no |
| 3D Now+ | no | no | no | no |
| SSE | no | no | yes | yes |
| SSE2 | no | no | no | yes |
| Other | ||||
| Multi-processing | no | Yes (Athlon MP) | no | no |
| Core voltage | 2.0 V | 1.5 - 1.7 V | 1.30 to 1.65 V | 1.75 V |
The 2 GHz Celeron is essentially similar to the 1.7 and 1.8 GHz models, only the structure has been reduced to 0.13 µm. As a result the operating voltage falls to 1.5 V.
