Westmere (microarchitecture)
Westmere 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:
Processing Cores
| Process | Die Size | CPUID | Model | Stepping | Mobile | Desktop,
UP Server | DP Server | MP Server |
Ten-Core
| 32 nm | 513 mm² | 206F2 | 47 | A2 | | | | Westmere-EX
|
Six-Core
| 32 nm | 248 mm² | 206C0 ,
206C1 ,
206C2 | 44 | A0,
B0,
B1 | | Gulftown
| Westmere-EP
| |
| Dual-Core | 32 nm
45 nm | 114 mm²
+81 mm² | 20652
20655 | 37 | C2
K0 | Arrandale
| Clarkdale
| | |
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
Mobile processors
Roadmap
The successor to Nehalem and Westmere is Sandy Bridge.
