Intel Pentium II processor 400 MHz is recorded in the 1998 CPU research cohort under Intel. The current display name and classification are normalization proposals.
Source product name
Intel Pentium II processor 400 MHz
Source model number
Not established
Source manufacturer
Intel Corporation
Research scope
desktop systems, servers and workstations
Why it existed
manufacturer stated
Intel states higher performance for corporate and home computing plus server/workstation throughput
Intended users: corporate and home users; servers and workstations
Engineering response: 400 MHz Pentium II with 100 MHz bus and 512 KB L2 cache; 0.25 micron process
Same launch statement as 350 MHz; 400 MHz cache bus is also specified at 200 MHz.
Marketing claims and stated performance gains are not independently tested here.
What difference it made
Comparable benchmark evidence has not been established for this record. Missing results do not imply poor performance.
Release evidence
The year above is a research-cohort label. Announcement, production, shipment and retail availability are distinct events.
Proposed event
product introduction and system boxed availability
Proposed timing
1998-04-15 · exact precision
Assessment
proposed
Manufacturer name is shortened from Intel Corporation; display wording preserves the named 400 MHz variant. Verification supports the exact introduction and stated system/boxed availability date.
Intel introduced both named speeds on April 15 and gives same-day system and boxed-channel availability for each.
Follow-up: Retain both frozen speed-grade records; only part-number evidence could justify a finer SKU split.
Original intake sources
These notes preserve the state at intake. Later verification is shown under Release evidence above; an original note saying verification had not occurred is not the current assessment.