Sign in with
Sign up | Sign in

Upgrade Mania, Continued

CPU Scaling Analysis, Part 2: Intel Pentium III Scaling and Upgrading
By

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.

There are 0 comments.
This thread is closed for comments