- Jun 11, 2008
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FSB and Rated FSB question
- Thread starter danielsuperchef
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- Celeron CPUs Pipeline Processors
- Jun 11, 2008
- 48
- 0
- 18,530
- Jun 11, 2008
- 48
- 0
- 18,530
If you're talking Intel chipsets with the memory controller in the Northbridge
i.e. Memory Controller Hub ("MCH"), then:
"Bus Speed" is the raw clock rate of the Front Side Bus
(transmission channels between the CPU and the memory controller)
"Rated FSB" is always "Bus Speed" x 4, because
the Front Side Bus is "quad-pumped" meaning
there are 4 data transfers for each tick of the bus clock.
And, "Core Speed" = "Bus Speed" x Multiplier.
For example, on the computer I am using to write this:
we have overclocked an Intel Pentium D 830 as follows:
Bus Speed = 240.0 MHz
Rated FSB = 960.0 MHz (240 x 4)
Multiplier = x 15.0
Core Speed = 3600.0 MHz (240 x 15)
MRFS
i.e. Memory Controller Hub ("MCH"), then:
"Bus Speed" is the raw clock rate of the Front Side Bus
(transmission channels between the CPU and the memory controller)
"Rated FSB" is always "Bus Speed" x 4, because
the Front Side Bus is "quad-pumped" meaning
there are 4 data transfers for each tick of the bus clock.
And, "Core Speed" = "Bus Speed" x Multiplier.
For example, on the computer I am using to write this:
we have overclocked an Intel Pentium D 830 as follows:
Bus Speed = 240.0 MHz
Rated FSB = 960.0 MHz (240 x 4)
Multiplier = x 15.0
Core Speed = 3600.0 MHz (240 x 15)
MRFS
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