# Westmere (microarchitecture)

Westmere (formerly Nehalem-C) is the code name given to the 32 nm die shrink of Nehalem. While sharing the same CPU sockets, Westmere included Intel HD Graphics, while Nehalem did not.
The first Westmere-based processors were launched on January 7, 2010, by Intel Corporation.
The Westmere architecture has been available under the Intel brands of Core i3, Core i5, Core i7, Pentium, Celeron and Xeon.

## Technology

Westmere's feature improvements from Nehalem, as reported:
* Native six-core (Gulftown) and ten-core (Westmere-EX) processors.
* A new set of instructions that gives over 3x the encryption and decryption rate of Advanced Encryption Standard (AES) processes compared to before.
** Delivers seven new instructions (AES instruction set or AES-NI), out of which six implement the AES algorithm, and PCLMULQDQ (see CLMUL instruction set) implements carry-less multiplication for use in cryptography and data compression.
* Integrated graphics, added into the processor package (dual core Arrandale and Clarkdale only).
* Improved virtualization latency.
* New virtualization capability: "VMX Unrestricted mode support," which allows 16-bit guests to run (real mode and big real mode).
* Support for "Huge Pages" of 1 GB in size.
Translation lookaside buffer sizes :
| Cache | Cache | Page size | Page size | Page size |
| Name | Level | 4 KB | 2 MB | 1 GB |
| DTLB | 1st | 64 | 32 | — |
| ITLB | 1st | 128 | 7 / logical core | — |
| STLB | 2nd | 512 | none | none |

## CPU variants

| Processing cores (interface) | Process | Die size | CPUID | Model | Stepping | Mobile | Desktop, UP server | DP server | MP server |
| Ten-Core (Quad-channel) | 32 nm | 513 mm$^2$ | 206F2 | 47 | A2 | | | | Westmere-EX (80615) |
| Six-Core (Triple-Channel) | 32 nm | 248 mm$^2$ | 206C0 (ES/QS), 206C1 (ES/QS), 206C2 | 44 | A0, B0, B1 | | Gulftown (80613) | Westmere-EP (80614) | |
| Dual-Core (Dual-Channel, PCIe, Graphics Core) | 32 nm 45 nm | 114 mm$^2$ +81 mm$^2$ | 20652 20655 | 37 | C2 K0 | Arrandale (80617) | Clarkdale (80616) | | |

## Westmere CPUs

* TDP includes the integrated GPU, if present.
* Clarkdale processors feature 16 PCIe 2.0 lanes, which can be used in 1x16 or 2x8 configuration.
* Clarkdale and Arrandale contain the 32 nm dual core processor Hillel and the 45 nm integrated graphics device Ironlake, and support switchable graphics.
* Only certain higher-end CPUs support AES-NI and 1GB Huge Pages.

### Server / Desktop processors

| Codename | Market | Cores / threads | Socket | Processor branding & model | Processor branding & model | Clock rate | Clock rate | Turbo | TDP | Interfaces | Interfaces | L3 cache | Release date | Price |
| Codename | Market | Cores / threads | Socket | Processor branding & model | Processor branding & model | Core | GPU | Turbo | TDP | Chipset | Memory | L3 cache | Release date | Price |
| Westmere-EX | MP Server | 10 (20) | LGA 1567 | Xeon | E7-8870 | 2.4 GHz | — | Yes | 130 W | 4× QPI 6.4 GT/s | 4× DDR3-1066 | 30 MB | 2011-04-05 | $4616 |
| Westmere-EX | MP Server | 10 (20) | LGA 1567 | Xeon | E7-4870 | 2.4 GHz | — | Yes | 130 W | 4× QPI 6.4 GT/s | 4× DDR3-1066 | 30 MB | 2011-04-05 | $4394 |
| Westmere-EX | MP Server | 10 (20) | LGA 1567 | Xeon | E7-2870 | 2.4 GHz | — | Yes | 130 W | 4× QPI 6.4 GT/s | 4× DDR3-1066 | 30 MB | 2011-04-05 | $4227 |
| Westmere-EX | MP Server | 10 (20) | LGA 1567 | Xeon | E7-8867L | 2.13 GHz | — | Yes | 105 W | 4× QPI 6.4 GT/s | 4× DDR3-1066 | 30 MB | 2011-04-05 | $4172 |
| Westmere-EX | MP Server | 10 (20) | LGA 1567 | Xeon | E7-8860 | 2.26 GHz | — | Yes | 130 W | 4× QPI 6.4 GT/s | 4× DDR3-1066 | 24 MB | 2011-04-05 | $4061 |
| Westmere-EX | MP Server | 10 (20) | LGA 1567 | Xeon | E7-4860 | 2.26 GHz | — | Yes | 130 W | 4× QPI 6.4 GT/s | 4× DDR3-1066 | 24 MB | 2011-04-05 | $3838 |
| Westmere-EX | MP Server | 10 (20) | LGA 1567 | Xeon | E7-2860 | 2.26 GHz | — | Yes | 130 W | 4× QPI 6.4 GT/s | 4× DDR3-1066 | 24 MB | 2011-04-05 | $3670 |
| Westmere-EX | MP Server | 10 (20) | LGA 1567 | Xeon | E7-8850 | 2 GHz | — | Yes | 130 W | 4× QPI 6.4 GT/s | 4× DDR3-1066 | 24 MB | 2011-04-05 | $3059 |
| Westmere-EX | MP Server | 10 (20) | LGA 1567 | Xeon | E7-4850 | 2 GHz | — | Yes | 130 W | 4× QPI 6.4 GT/s | 4× DDR3-1066 | 24 MB | 2011-04-05 | $2837 |
| Westmere-EX | MP Server | 10 (20) | LGA 1567 | Xeon | E7-2850 | 2 GHz | — | Yes | 130 W | 4× QPI 6.4 GT/s | 4× DDR3-1066 | 24 MB | 2011-04-05 | $2558 |
| Westmere-EX | MP Server | 8 (8) | LGA 1567 | Xeon | E7-8837 | 2.66 GHz | — | Yes | 130 W | 4× QPI 6.4 GT/s | 4× DDR3-1066 | 24 MB | 2011-04-05 | $2280 |
| Westmere-EX | MP Server | 8 (16) | LGA 1567 | Xeon | E7-8830 | 2.13 GHz | — | Yes | 105 W | 4× QPI 6.4 GT/s | 4× DDR3-1066 | 24 MB | 2011-04-05 | $2280 |
| Westmere-EX | MP Server | 8 (16) | LGA 1567 | Xeon | E7-4830 | 2.13 GHz | — | Yes | 105 W | 4× QPI 6.4 GT/s | 4× DDR3-1066 | 24 MB | 2011-04-05 | $2059 |
| Westmere-EX | MP Server | 8 (16) | LGA 1567 | Xeon | E7-2830 | 2.13 GHz | — | Yes | 105 W | 4× QPI 6.4 GT/s | 4× DDR3-1066 | 24 MB | 2011-04-05 | $1779 |
| Westmere-EX | MP Server | 8 (16) | LGA 1567 | Xeon | E7-4820 | 2 GHz | — | Yes | 105 W | 4× QPI 5.86 GT/s | 4× DDR3-1066 | 18 MB | 2011-04-05 | $1446 |
| Westmere-EX | MP Server | 8 (16) | LGA 1567 | Xeon | E7-2820 | 2 GHz | — | Yes | 105 W | 4× QPI 5.86 GT/s | 4× DDR3-1066 | 18 MB | 2011-04-05 | $1334 |
| Westmere-EX | MP Server | 6 (12) | LGA 1567 | Xeon | E7-4807 | 1.86 GHz | — | No | 95 W | 4× QPI 4.8 GT/s | 4× DDR3-800 | 18 MB | 2011-04-05 | $890 |
| Westmere-EX | MP Server | 6 (12) | LGA 1567 | Xeon | E7-2803 | 1.73 GHz | — | No | 105 W | 4× QPI 4.8 GT/s | 4× DDR3-800 | 18 MB | 2011-04-05 | $774 |
| Westmere-EP | DP Server | 2 (4) | LGA 1366 | Xeon | X5698 | 4.4 GHz | — | No | 130 W | 2× QPI 6.4 GT/s | 3× DDR3-1333 | 12 MB | Q1 2011 | OEM |
| Westmere-EP | DP Server | 6 (12) | LGA 1366 | Xeon | X5690 | 3.46 GHz | — | Yes | 130 W | 2× QPI 6.4 GT/s | 3× DDR3-1333 | 12 MB | 2011-02-13 | $1663 |
| Westmere-EP | DP Server | 6 (12) | LGA 1366 | Xeon | X5680 | 3.33 GHz | — | Yes | 130 W | 2× QPI 6.4 GT/s | 3× DDR3-1333 | 12 MB | 2010-03-16 | $1663 |
| Westmere-EP | DP Server | 6 (12) | LGA 1366 | Xeon | X5679 | 3.2 GHz | — | Yes | 115 W | 2× QPI 6.4 GT/s | 3× DDR3-1333 | 12 MB | 2011-02-13 | OEM |
| Westmere-EP | DP Server | 6 (12) | LGA 1366 | Xeon | X5675 | 3.06 GHz | — | Yes | 95 W | 2× QPI 6.4 GT/s | 3× DDR3-1333 | 12 MB | 2011-02-13 | $1440 |
| Westmere-EP | DP Server | 6 (12) | LGA 1366 | Xeon | X5670 | 2.93 GHz | — | Yes | 95 W | 2× QPI 6.4 GT/s | 3× DDR3-1333 | 12 MB | 2010-03-16 | $1440 |
| Westmere-EP | DP Server | 6 (12) | LGA 1366 | Xeon | X5660 | 2.8 GHz | — | Yes | 95 W | 2× QPI 6.4 GT/s | 3× DDR3-1333 | 12 MB | 2010-03-16 | $1219 |
| Westmere-EP | DP Server | 6 (12) | LGA 1366 | Xeon | X5650 | 2.66 GHz | — | Yes | 95 W | 2× QPI 6.4 GT/s | 3× DDR3-1333 | 12 MB | 2010-03-16 | $996 |
| Westmere-EP | DP Server | 6 (12) | LGA 1366 | Xeon | E5649 | 2.53 GHz | — | Yes | 80 W | 2× QPI 5.86 GT/s | 3× DDR3-1333 | 12 MB | 2011-02-13 | $774 |
| Westmere-EP | DP Server | 6 (12) | LGA 1366 | Xeon | E5645 | 2.4 GHz | — | Yes | 80 W | 2× QPI 5.86 GT/s | 3× DDR3-1333 | 12 MB | 2010-03-16 | $551 |
| Westmere-EP | DP Server | 6 (12) | LGA 1366 | Xeon | L5645 | 2.4 GHz | — | Yes | 60 W | 2× QPI 5.86 GT/s | 3× DDR3-1333 | 12 MB | 2011-02-13 | OEM |
| Westmere-EP | DP Server | 6 (12) | LGA 1366 | Xeon | L5640 | 2.26 GHz | — | Yes | 60 W | 2× QPI 5.86 GT/s | 3× DDR3-1333 | 12 MB | 2010-03-16 | $996 |
| Westmere-EP | DP Server | 6 (12) | LGA 1366 | Xeon | L5639 | 2.13 GHz | — | Yes | 60 W | 2× QPI 5.86 GT/s | 3× DDR3-1333 | 12 MB | 2011-02-13 | OEM |
| Westmere-EP | DP Server | 6 (12) | LGA 1366 | Xeon | L5638 | 2.0 GHz | — | Yes | 60 W | 2× QPI 5.86 GT/s | 3× DDR3-1333 | 12 MB | 2010-03-16 | $958 |
| Westmere-EP | DP Server | 4 (8) | LGA 1366 | Xeon | X5687 | 3.6 GHz | — | Yes | 130 W | 2× QPI 6.4 GT/s | 3× DDR3-1333 | 12 MB | 2011-02-13 | $1663 |
| Westmere-EP | DP Server | 4 (8) | LGA 1366 | Xeon | X5677 | 3.46 GHz | — | Yes | 130 W | 2× QPI 6.4 GT/s | 3× DDR3-1333 | 12 MB | 2010-03-16 | $1663 |
| Westmere-EP | DP Server | 4 (8) | LGA 1366 | Xeon | X5672 | 3.2 GHz | — | Yes | 95 W | 2× QPI 6.4 GT/s | 3× DDR3-1333 | 12 MB | 2011-02-13 | $1440 |
| Westmere-EP | DP Server | 4 (8) | LGA 1366 | Xeon | X5667 | 3.06 GHz | — | Yes | 95 W | 2× QPI 6.4 GT/s | 3× DDR3-1333 | 12 MB | 2010-03-16 | $1440 |
| Westmere-EP | DP Server | 4 (8) | LGA 1366 | Xeon | X5647 | 2.93 GHz | — | Yes | 130 W | 2× QPI 5.86 GT/s | 3× DDR3-1066 | 12 MB | 2011-02-13 | $774 |
| Westmere-EP | DP Server | 4 (8) | LGA 1366 | Xeon | E5640 | 2.66 GHz | — | Yes | 80 W | 2× QPI 5.86 GT/s | 3× DDR3-1066 | 12 MB | 2010-03-16 | $774 |
| Westmere-EP | DP Server | 4 (8) | LGA 1366 | Xeon | E5630 | 2.53 GHz | — | Yes | 80 W | 2× QPI 5.86 GT/s | 3× DDR3-1066 | 12 MB | 2010-03-16 | $551 |
| Westmere-EP | DP Server | 4 (8) | LGA 1366 | Xeon | E5620 | 2.4 GHz | — | Yes | 80 W | 2× QPI 5.86 GT/s | 3× DDR3-1066 | 12 MB | 2010-03-16 | $387 |
| Westmere-EP | DP Server | 4 (8) | LGA 1366 | Xeon | L5630 | 2.13 GHz | — | Yes | 40 W | 2× QPI 5.86 GT/s | 3× DDR3-1066 | 12 MB | 2010-03-16 | $551 |
| Westmere-EP | DP Server | 4 (8) | LGA 1366 | Xeon | L5618 | 1.86 GHz | — | Yes | 40 W | 2× QPI 5.86 GT/s | 3× DDR3-1066 | 12 MB | 2010-03-16 | $530 |
| Westmere-EP | DP Server | 4 (4) | LGA 1366 | Xeon | L5609 | 1.86 GHz | — | No | 40 W | 2× QPI 4.8 GT/s | 3× DDR3-1066 | 12 MB | 2010-03-16 | $440 |
| Westmere-EP | DP Server | 4 (4) | LGA 1366 | Xeon | E5607 | 2.26 GHz | — | No | 80 W | 2× QPI 4.8 GT/s | 3× DDR3-1066 | 8 MB | 2011-02-13 | $276 |
| Westmere-EP | DP Server | 4 (4) | LGA 1366 | Xeon | E5606 | 2.13 GHz | — | No | 80 W | 2× QPI 4.8 GT/s | 3× DDR3-1066 | 8 MB | 2011-02-13 | $219 |
| Westmere-EP | DP Server | 4 (4) | LGA 1366 | Xeon | E5603 | 1.6 GHz | — | No | 80 W | 2× QPI 4.8 GT/s | 3× DDR3-1066 | 4 MB | 2011-02-13 | $188 |
| Gulftown | UP Server | 6 (12) | LGA 1366 | Xeon | W3690 | 3.46 GHz | — | Yes | 130 W | 1× QPI 6.4 GT/s | 3× DDR3-1333 | 12 MB | 2011-02-13 | $999 |
| Gulftown | UP Server | 6 (12) | LGA 1366 | Xeon | W3680 | 3.33 GHz | — | Yes | 130 W | 1× QPI 6.4 GT/s | 3× DDR3-1333 | 12 MB | 2010-03-16 | $999 |
| Gulftown | UP Server | 6 (12) | LGA 1366 | Xeon | W3670 | 3.20 GHz | — | Yes | 130 W | 1× QPI 4.8 GT/s | 3× DDR3-1066 | 12 MB | 2010-08-29 | $885 |
| Gulftown | Extreme / Performance Desktop | 6 (12) | LGA 1366 | Core i7 Extreme | 990X | 3.46 GHz | — | Yes | 130 W | 1× QPI 6.4 GT/s | 3× DDR3-1066 | 12 MB | 2011-02-13 | $999 |
| Gulftown | Extreme / Performance Desktop | 6 (12) | LGA 1366 | Core i7 Extreme | 980X | 3.33 GHz | — | Yes | 130 W | 1× QPI 6.4 GT/s | 3× DDR3-1066 | 12 MB | 2010-03-16 | $999 |
| Gulftown | Extreme / Performance Desktop | 6 (12) | LGA 1366 | Core i7 | 980 | 3.33 GHz | — | Yes | 130 W | 1× QPI 4.8 GT/s | 3× DDR3-1066 | 12 MB | 2011-06-26 | $583 |
| Gulftown | Extreme / Performance Desktop | 6 (12) | LGA 1366 | Core i7 | 970 | 3.20 GHz | — | Yes | 130 W | 1× QPI 4.8 GT/s | 3× DDR3-1066 | 12 MB | 2010-07-17 | $583 |
| Clarkdale | UP Server | 2 (4) | LGA 1156 | Xeon | L3406 | 2.26 GHz | — | Yes | 30 W | DMI | 2× DDR3-1066 | 4 MB | 2010-03-16 | $189 |
| Clarkdale | UP Server | 2 (2) | LGA 1156 | Xeon | L3403 | 2.0 GHz | — | Yes | 30 W | DMI | 2× DDR3-1066 | 4 MB | 2010-10 | OEM |
| Clarkdale | Mainstream / Value Desktop | 2 (4) | LGA 1156 | Core i5 | 680 | 3.6 GHz | 733 MHz | Yes | 73 W | DMI | 2× DDR3-1333 | 4 MB | 2010-04-18 | $294 |
| Clarkdale | Mainstream / Value Desktop | 2 (4) | LGA 1156 | Core i5 | 670 | 3.46 GHz | 733 MHz | Yes | 73 W | DMI | 2× DDR3-1333 | 4 MB | 2010-01-07 | $284 |
| Clarkdale | Mainstream / Value Desktop | 2 (4) | LGA 1156 | Core i5 | 661 | 3.33 GHz | 900 MHz | Yes | 87 W | DMI | 2× DDR3-1333 | 4 MB | 2010-01-07 | $196 |
| Clarkdale | Mainstream / Value Desktop | 2 (4) | LGA 1156 | Core i5 | 660 | 3.33 GHz | 733 MHz | Yes | 73 W | DMI | 2× DDR3-1333 | 4 MB | 2010-01-07 | $196 |
| Clarkdale | Mainstream / Value Desktop | 2 (4) | LGA 1156 | Core i5 | 655K | 3.2 GHz | 733 MHz | Yes | 73 W | DMI | 2× DDR3-1333 | 4 MB | 2010-05-30 | $216 |
| Clarkdale | Mainstream / Value Desktop | 2 (4) | LGA 1156 | Core i5 | 650 | 3.2 GHz | 733 MHz | Yes | 73 W | DMI | 2× DDR3-1333 | 4 MB | 2010-01-07 | $176 |
| Clarkdale | Mainstream / Value Desktop | 2 (4) | LGA 1156 | Core i3 | 560 | 3.33 GHz | 733 MHz | No | 73 W | DMI | 2× DDR3-1333 | 4 MB | 2010-08-29 | $138 |
| Clarkdale | Mainstream / Value Desktop | 2 (4) | LGA 1156 | Core i3 | 550 | 3.20 GHz | 733 MHz | No | 73 W | DMI | 2× DDR3-1333 | 4 MB | 2010-05-30 | $138 |
| Clarkdale | Mainstream / Value Desktop | 2 (4) | LGA 1156 | Core i3 | 540 | 3.06 GHz | 733 MHz | No | 73 W | DMI | 2× DDR3-1333 | 4 MB | 2010-01-07 | $133 |
| Clarkdale | Mainstream / Value Desktop | 2 (4) | LGA 1156 | Core i3 | 530 | 2.93 GHz | 733 MHz | No | 73 W | DMI | 2× DDR3-1333 | 4 MB | 2010-01-07 | $113 |
| Clarkdale | Mainstream / Value Desktop | 2 (2) | LGA 1156 | Pentium | G6960 | 2.93 GHz | 533 MHz | No | 73 W | DMI | 2× DDR3-1066 | 3 MB | 2011-01-09 | $89 |
| Clarkdale | Mainstream / Value Desktop | 2 (2) | LGA 1156 | Pentium | G6951 | 2.8 GHz | 533 MHz | No | 73 W | DMI | 2× DDR3-1066 | 3 MB | Q3 2010 | OEM |
| Clarkdale | Mainstream / Value Desktop | 2 (2) | LGA 1156 | Pentium | G6950 | 2.8 GHz | 533 MHz | No | 73 W | DMI | 2× DDR3-1066 | 3 MB | 2010-01-07 | $87 |
| Clarkdale | Mainstream / Value Desktop | 2 (2) | LGA 1156 | Celeron | G1101 | 2.26 GHz | 533 MHz | No | 73 W | DMI | 2× DDR3-1066 | 2 MB | 2010-01-07 | $70 |
| Codename | Market | Cores / Threads | Socket | Processor Branding & model | Processor Branding & model | Core | GPU | Turbo | TDP | Chipset | Memory | L3 cache | Release Date | Price |
| Codename | Market | Cores / Threads | Socket | Processor Branding & model | Processor Branding & model | Clock rate | Clock rate | Turbo | TDP | Interfaces | Interfaces | | L3 cache | Release Date | Price |

### Mobile processors

| Codename | Market | Cores / threads | Processor branding & model | Processor branding & model | CPU Clock rate | CPU Clock rate | GPU clock rate | Turbo | TDP | Memory | L3 cache | Interface | Release date | Price |
| Codename | Market | Cores / threads | Processor branding & model | Processor branding & model | Standard | Turbo (1C/2C active cores ) | GPU clock rate | Turbo | TDP | Memory | L3 cache | Interface | Release date | Price |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i7 | 640M | 2.8 GHz | 3.46/3.2 GHz | 766 MHz | Yes | 35 W | 2× DDR3-1066 | 4 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-09-26 | $346 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i7 | 620M | 2.66 GHz | 3.33/3.06 GHz | 766 MHz | Yes | 35 W | 2× DDR3-1066 | 4 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-01-07 | $332 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i7 | 610E | 2.53 GHz | 3.2/2.93 GHz | 766 MHz | Yes | 35 W | 2× DDR3-1066 | 4 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-01-07 | $332 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i7 | 660LM | 2.26 GHz | 3.06/2.8 GHz | 566 MHz | Yes | 25 W | 2× DDR3-1066 | 4 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-09-26 | $346 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i7 | 640LM | 2.13 GHz | 2.93/2.66 GHz | 566 MHz | Yes | 25 W | 2× DDR3-1066 | 4 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-01-07 | $332 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i7 | 620LM / 620LE | 2.0 GHz | 2.8/2.53 GHz | 566 MHz | Yes | 25 W | 2× DDR3-1066 | 4 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-01-07 | $300 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i7 | 680UM | 1.46 GHz | 2.53/2.16 GHz | 500 MHz | Yes | 18 W | 2× DDR3-800 | 4 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-09-26 | $317 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i7 | 660UM / 660UE | 1.33 GHz | 2.4/2.0 GHz | 500 MHz | Yes | 18 W | 2× DDR3-800 | 4 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-05-25 | $317 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i7 | 640UM | 1.2 GHz | 2.26/1.86 GHz | 500 MHz | Yes | 18 W | 2× DDR3-800 | 4 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-01-07 | $305 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i7 | 620UM / 620UE | 1.06 GHz | 2.13/1.76 GHz | 500 MHz | Yes | 18 W | 2× DDR3-800 | 4 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-01-07 | $278 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i5 | 580M | 2.66 GHz | 3.33/2.93 GHz | 766 MHz | Yes | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-09-26 | $266 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i5 | 560M | 2.66 GHz | 3.2/2.93 GHz | 766 MHz | Yes | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-09-26 | $225 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i5 | 540M | 2.53 GHz | 3.06/2.8 GHz | 766 MHz | Yes | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-01-07 | $257 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i5 | 520M / 520E | 2.4 GHz | 2.93/2.66 GHz | 766 MHz | Yes | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-01-07 | $225 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i5 | 560UM | 1.33 GHz | 2.13/1.86 GHz | 500 MHz | Yes | 18 W | 2× DDR3-800 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-09-26 | $250 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i5 | 540UM | 1.2 GHz | 2.0/1.73 GHz | 500 MHz | Yes | 18 W | 2× DDR3-800 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-05-25 | $250 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i5 | 520UM | 1.06 GHz | 1.86/1.6 GHz | 500 MHz | Yes | 18 W | 2× DDR3-800 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-01-07 | $241 |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i5 | 480M | 2.66 GHz | 2.93/2.93 GHz | 766 MHz | Yes | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2011-01-09 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i5 | 460M | 2.53 GHz | 2.8/2.8 GHz | 766 MHz | Yes | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-09-26 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i5 | 450M | 2.4 GHz | 2.66/2.66 GHz | 766 MHz | Yes | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-06-26 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i5 | 430M | 2.26 GHz | 2.53/2.53 GHz | 766 MHz | Yes | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-01-07 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i5 | 470UM | 1.33 GHz | 1.86/1.6 GHz | 500 MHz | Yes | 18 W | 2× DDR3-800 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-10-01 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i5 | 430UM | 1.2 GHz | 1.73/1.46 GHz | 500 MHz | Yes | 18 W | 2× DDR3-800 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-05-25 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i3 | 390M | 2.66 GHz | n/a | 667 MHz | No | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2011-01-09 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i3 | 380M | 2.53 GHz | n/a | 667 MHz | No | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-09-26 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i3 | 370M | 2.4 GHz | n/a | 667 MHz | No | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-06-20 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i3 | 350M | 2.26 GHz | n/a | 667 MHz | No | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-01-07 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i3 | 330M / 330E | 2.13 GHz | n/a | 667 MHz | No | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-01-07 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i3 | 380UM | 1.33 GHz | n/a | 500 MHz | No | 18 W | 2× DDR3-800 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-10-01 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (4) | Core i3 | 330UM | 1.2 GHz | n/a | 500 MHz | No | 18 W | 2× DDR3-800 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-05-25 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (2) | Pentium | P6300 | 2.26 GHz | n/a | 667 MHz | No | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2011-01-09 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (2) | Pentium | P6200 | 2.13 GHz | n/a | 667 MHz | No | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-09-26 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (2) | Pentium | P6100 | 2.0 GHz | n/a | 667 MHz | No | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-09-26 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (2) | Pentium | P6000 | 1.86 GHz | n/a | 667 MHz | No | 35 W | 2× DDR3-1066 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-06-20 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (2) | Pentium | U5600 | 1.33 GHz | n/a | 500 MHz | No | 18 W | 2× DDR3-800 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2011-01-09 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (2) | Pentium | U5400 | 1.2 GHz | n/a | 500 MHz | No | 18 W | 2× DDR3-800 | 3 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-05-25 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (2) | Celeron | P4600 | 2.0 GHz | n/a | 667 MHz | No | 35 W | 2× DDR3-1066 | 2 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-09-26 | $86 |
| Arrandale | Mainstream / Value Mobile | 2 (2) | Celeron | P4500 / P4505 | 1.86 GHz | n/a | 667 MHz | No | 35 W | 2× DDR3-1066 | 2 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-03-28 | OEM |
| Arrandale | Mainstream / Value Mobile | 2 (2) | Celeron | U3600 | 1.2 GHz | n/a | 500 MHz | No | 18 W | 2× DDR3-800 | 2 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2011-01-09 | $134 |
| Arrandale | Mainstream / Value Mobile | 2 (2) | Celeron | U3400 / U3405 | 1.06 GHz | n/a | 500 MHz | No | 18 W | 2× DDR3-800 / 1066 | 2 MB | * DMI * PCIe 1 x16 * Socket: μPGA-988 / BGA-1288 | 2010-05-25 | OEM |

## Roadmap

The successor to Nehalem and Westmere is Sandy Bridge.
vteIntel CPU core roadmaps from P6 to Panther Lake :
Atom (ULV)
Node name
Pentium/Core
Microarch.
Step
Microarch.
Step
600 nm
P6
Pentium Pro (133 MHz)
500 nm
Pentium Pro (150 MHz)
350 nm
Pentium Pro (166–200 MHz)
Klamath
250 nm
Deschutes
Katmai
NetBurst
180 nm
Coppermine
Willamette
130 nm
Tualatin
Northwood
Pentium M
Banias
NetBurst(HT)
NetBurst(×2)
90 nm
Dothan
Prescott
Prescott‑2M
Smithfield
Tejas
Cedarmill (Tejas)
65 nm
Yonah
Nehalem (NetBurst)
Cedar Mill
Presler
Core
Merom
4 cores on mainstream desktop, DDR3 introduced
Bonnell
Bonnell
45 nm
Penryn
Nehalem
Nehalem
HT reintroduced, integrated MC, PCH L3-cache introduced, 256KB L2-cache/core
Saltwell
32 nm
Westmere
Introduced GPU on same package and AES-NI
Sandy Bridge
Sandy Bridge
On-die ring bus, no more non-UEFI motherboards
Silvermont
Silvermont
22 nm
Ivy Bridge
Haswell
Haswell
Fully integrated voltage regulator
Airmont
14 nm
Broadwell
Skylake
Skylake
DDR4 introduced on mainstream desktop
Goldmont
Goldmont
Kaby Lake
Coffee Lake
6 cores on mainstream desktop
Amber Lake
Mobile-only
Goldmont Plus
Goldmont Plus
Whiskey Lake
Mobile-only
Coffee Lake Refresh
8 cores on mainstream desktop
Comet Lake
10 cores on mainstream desktop
Sunny Cove
Cypress Cove (Rocket Lake)
Backported Sunny Cove microarchitecture for 14nm
Tremont
Tremont
10 nm
Skylake
Palm Cove (Cannon Lake)
Mobile-only
Sunny Cove
Sunny Cove (Ice Lake)
512 KB L2-cache/core
Willow Cove (Tiger Lake)
X$^e$ graphics engine
Gracemont
Gracemont
Intel 7 (10nm ESF)
Golden Cove
Golden Cove (Alder Lake)
Hybrid, DDR5, PCIe 5.0
Raptor Cove (Raptor Lake)
Crestmont
Crestmont
Intel 4
Redwood Cove
Meteor Lake
Mobile-only NPU, chiplet architecture
Skymont
Skymont
N3B (TSMC)
Lion Cove
Lunar Lake
Low power mobile only (9-30W)
Arrow Lake
Darkmont
Darkmont
18A
Cougar Cove
Panther Lake
Strike-through indicates cancelled processors
Bold names are microarchitectures
Italic names are future processors :