Celeron Northwood family was the second Celeron family based on
NetBurst micro-architecture. Celeron Northwood core (often referred
as Northwood-128) was very similar to Pentium 4 Northwood core. The
core was built on 0.13 micron technology, had 16 KB data level 1
cache, level 1 instruction trace cache that could store about 12000
micro-operations, 400 MHz Front-side Bus (quad-pumped 100 MHz) and
supported MMX, SSE and SSE2 instructions. Northwood Celerons were
manufactured in the same 478-pin package as Willamette Celeron and
Northwood Pentium 4 microprocessors. Since the Celeron Northwood CPUs
were low-cost versions of Pentium 4, they didn't include all of the
Pentium 4 features. Level 2 cache size on Celerons was only 128 KB,
while the Pentium 4 processors had 4 times larger L2 cache. The
Celerons had 400 MHz Front-Size Bus (FSB) frequency, which was twice
slower than 800 MHz FSB of the fastest Pentium 4 Northwood CPUs.
Also, all 800 MHz Pentium 4s included Hyper-threading technology.
This feature was not incorporated into Celeron Northwood family.
Celeron Northwood family was the last family branded with Celeron
name. All future budget processors were released under two different
brands:
- Celeron M for mobile processors
- Celeron D for desktop microprocessors.
To compare major features of Celeron microprocessors based on Northwood
core please see Celeron Northwood
CPU chart.
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