Intel Pentium 4 Prescott core

Previous generation		Related core	Next Generation
Northwood » 0.13 micron » Up to 800 MHz FSB » 512 KB L2 cache » Hyper-Threading technology Pentium 4 Celeron Mobile Pentium 4-M Mobile Pentium 4 Mobile Celeron	Prescott » 0.09 micron » Up to 2 MB L2 cache » 64-bit processing » Execute Disable bit » SSE3 » Virtualization Pentium 4 Celeron D Mobile Pentium 4 Prescott-2M » 2 MB L2 cache Pentium 4 Prescott-256 » 256 KB L2 cache Celeron D	Smithfield » 0.09 micron » Dual-core Pentium D Pentium Extreme Edition	Cedar Mill » 0.065 micron Pentium 4 Celeron D

The Prescott core was introduced on Feb 2, 2004. This core is based on NetBurst microarchitecture.

New core features:

• 0.09 micron manufacturing process
• Increased L2 cache size up to 2 MB
• Extended Memory 64 technology (EM64T)
• Execute disable bit capability
• Virtualization technology
• SSE3

Identification of microprocessors with Prescott core:

• By part number: The part number contains 80546 (but not 80546K) or 80547. For example: RK80546PG0961M, JM80547RE088CN
• By CPU ID: First two digits of CPU identification number are "F3" or "F4". Please note that some Xeon processors had the same CPUIDs as Pentium 4 Prescott CPUs.

Celeron D microprocessors have modified Prescott core that includes 256 KB of level 2 cache memory. To distinguish this core from Pentium 4 Prescott core with 1MB L2 cache the Celeron D core is often called Prescott-256. Also, to distinguish between Prescott Pentium 4 cores with different sizes of L2 cache, the core with 2 MB L2 cache is often called Prescott-2M.

	Desktop Pentium 4	Celeron D	Mobile Pentium 4
Manufacturing technology	0.09 micron
Frequency (MHz)	2800 - 3800	2133 - 3466	2800 - 3466
Fastest processor	RK80546PE0721M - 2800 MHz, 533 MHz FSB, socket 478 RK80546PG0961M - 3.4 GHz, 800 MHz FSB, socket 478 JM80547PG1122MM HH80547PG1122MM HH80547PG1122MH - 3.8 GHz, 800 MHz FSB, socket 775	RK80546RE088256 - 3.2 GHz, socket 478 JM80547RE099256 - 3.46 GHz, socket 775	RK80546HE0991M - 3.46 GHz
Front-side bus frequency (MHz)	533 (133 MHz QDR) 800 (200 MHz QDR)	533 (133 MHz QDR)	533 (133 MHz QDR)
L2 cache	1024 KB 2048 KB	256 KB	1024 KB
Socket type	Socket 478 Socket 775		Socket 478
Note	Prescott core with 2 MB level 2 cache is often called Prescott-2M	Prescott core with 256 KB L2 cache is often called Prescott-256