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- CPU Scaling Analysis, Part 1: AMD Athlon
- Quo Vadis Intel? The Latest Roadmap
- Pentium 4 Systems: To Buy or Not To Buy / To Cry Or Not to Cry
- AMD Releases Duron 850
- Processors On The Rocks VOL. 2
- Final Recount: Pentium 4 vs. Athlon
- Painting a New Picture of Pentium 4: Tweaked MPEG4 Encoding
- Important Pentium 4 Evaluation Update
- Intel's New Pentium 4 Processor
- Mobile CPU Mania
Upgrade Mania, Continued
Source: Tom's Hardware US – Keywords: cpu, scaling, analysis
Syndication:
Upgrade Mania, Continued
There are three important conditions you need to be aware of before purchasing a new processor:
Does my motherboard support the core voltage for the new processor?
Slot-1 or Socket 370 motherboards that are not older than a year will definitely be able to support all Pentium III or Celeron processors. Not all of those motherboards will support the 133 MHz front side bus (FSB or processor bus clock) though.
Depending on the chipset of the motherboard and its age, you will see the following situation:
| Motherboard Chipset | Supported Processor Voltage | Supported Processor Bus Clock (FSB) | Supported Processors | Requires Converter Card |
|---|---|---|---|---|
| Intel 440LX/ZX chipset | usually 2.0 - 2.8 V | 66 MHz | Celeron 333-533
Pentium II 233-333 |
Celeron 533A-766
requires converter board with voltage regulator for 1.5-1.65 V |
| Intel 440BX chipset
~1998, 1999 |
usually supports 2.0 - 2.8 V | 66, 100 MHz | Celeron 333-533
Pentium II 233-450 Pentium III Katmai 450-600 |
Celeron 533A-800
Pentium III 600E - 800E requires converter board with voltage regulator for 1.5-1.65 V |
| Intel 440BX chipset
2000, 2001 |
~1.3 - 2.8 V | 66, 100 MHz | Celeron 333-533
Pentium II 233-450 Pentium III 450-850 Celeron 533A-800 |
|
| VIA Apollo Pro chipset | usually supports 2.0 - 2.8 V | 66, 100 MHz | Celeron 333-533
Pentium II 233-450 Pentium III Katmai 450-600 |
Celeron 533A-800
Pentium III 600E - 800E requires converter board with voltage regulator for 1.5-1.65 V |
| VIA Apollo Pro 133 chipset | usually supports 1.3 - 2.8 V | 66, 100, 133 MHz | Celeron 333-533
Pentium II 233-450 Pentium III 450-850E Pentium III 533B-1000EB Celeron 533A-800 |
|
| Intel 810E, 815, 820 chipsets | usually supports ~1.3 - 2.8 V | Celeron 333-533
Pentium II 233-450 Pentium III 450-850E Pentium III 533B-1000EB Celeron 533A-800 |
Please note that the range of the voltage regulator is decided by the motherboard-maker! Some old boards may be able to supply 1.65 V, while others may not. The year given in the table is an estimate only and meant as an orientation for you. Please always check the features of your motherboard. It is also possible that certain motherboards supports even higher or lower voltages.
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