All objects with Willamette chip

Willamette is the codename for the first Pentium 4. In 1998, when the Pentium II was new, Intel started developing the Netburst microarchitecture with 1GHz as target clock frequency. The oldest Pentium 4 I've seen can be found here and, as far as I know, first working samples of the Pentium 4 is the QT69ES.

On 20 November 2000, Intel released the Pentium 4 at 1.4 and 1.5GHz. It was an expensive chip and it needed expensive Rambus (RDRAM) memory in order to operate. Motherboards with the slow but cheap SDR-SDRAM (which caused a performance hit for bandwidth hungry the Pentium 4) came later. The introduction of the SDR-SDRAM capable motherboards caused the Pentium 4's sales to increase a lot. The Pentium 4 Willamette came in versions ranging from 1.3GHz to 2.0GHz. Budget versions, the Celeron, had 128KB L2 cache instead of 256KB L2 cache. Willemette was launched using the S423-socket but was later available for the S478-socket, just like the newer Pentium 4 Northwood.

Willamette did not perform very good, but paired up with RDRAM it's performance was not bad. AMD could offer a much cheaper Athlon (Thunderbird) which performed just as good.

New features in the Willamette were SSE2 instructions and clock-throttling. The latter made the processor run slower in case it started to overheat. In case of a fan-failure the processor won't be damaged.

Vendor
Name
Trans.
vCore
ES?
Date
Socket
sSpec
Intel
42M
?
Yes
9935
S423
Unknown
Intel
42M
~1,5V
Yes
0017
S423
QT69ES
Intel
42M
~1,5V
Yes
0017
S423
QT69ES
Intel
42M
~1,5V
Yes
0019
S423
QT69ES
Intel
42M
1,75V
No
0101
S423
SL4QD
Intel
42M
1,75V
No
0106
S423
SL4SF
Intel
42M
1,75V
No
0040
S423
SL4SG
Intel
42M
1,75V
No
0140
S478
SL59V
Intel
42M
1,75V
No
0129
S478
SL59U
Intel
42M
1,75V
No
0116
S423
SL4WT
Intel
42M
1,75V
Yes
0036
S423
QAQ1ES
Intel
42M
1,75V
No
0145
S478
SL5TJ
Intel
42M
1,75V
No
0138
S478
SL5N8
Intel
42M
1,75V
No
0135
S478
SL5VH
Intel
42M
1,75V
No
0203
S478
SL5TK
Intel
42M
1,75V
No
0229
S478
SL68C
Intel
42M
1,75V
No
0243
S478
SL69Z
Intel
42M
1,75V
No
0152
S478
SL5VJ
Intel
42M
1,75V
Yes
0210
S478
QJT4ES
Intel
42M
1,75V
No
0232
S478
SL68D
Intel
42M
1,75V
Yes
0211
S478
QJT3ES
Intel
42M
1,75V
Yes
0125
S423
QGU4ES