Hardware Museum

Over 20 years of PC history

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Intel Pentium 4 571Intel Pentium 4 520J
Code namePrescott (1 MB L2)Prescott (1 MB L2)
Base clock3800 MHz2800 MHz (0.74×)
Turbo full / half / single- | - | - - | - | -
Technology90 nm90 nm
Transistors125 million125 million
Die size112 mm2112 mm2
Cores / threads1 / 2 1 / 2
L1 data cache1 × 16 kB1 × 16 kB
L1 inst. cache1 × 12 kB1 × 12 kB
L2 cache1 × 1024 kB1 × 1024 kB
L3 cache--
Bus typeQDR, 800 MHz, 64 bitQDR, 800 MHz, 64 bit
Bus bandwith6400 MB/s6400 MB/s
SocketSocket 775Socket 775
Voltage-1.3 V
TDP115 W84 W (0.73×)