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.

Westmere
General Info
LaunchedJanuary 7, 2010 (January 7, 2010)
Performance
Max. CPU clock rate1.06 GHz to 3.46 GHz
Cache
L1 cache64 KB per core
L2 cache256 KB per core
L3 cache4 MB to 30 MB shared
Architecture and classification
ArchitectureNehalem x86
InstructionsMMX, AES-NI, CLMUL
Extensions
Physical specifications
Transistors
  • 382M to 2600M 32nm
Cores
  • 2-6 (4-10 Xeon)
GPU(s)533 MHz to 900 MHz
177M 45nm (K0)
Socket(s)
Products, models, variants
Model(s)
  • Core in, Xeon
History
PredecessorNehalem
SuccessorSandy Bridge
Connection of the GPU inside the Westmere microarchitecture

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.[1]
  • A new set of instructions that gives over 3x the encryption and decryption rate of Advanced Encryption Standard (AES) processes compared to before.[2]
  • Integrated graphics, added into the processor package (dual core Arrandale and Clarkdale only).
  • Improved virtualization latency.[4]
  • 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 [5]
Cache Page Size
NameLevel4 KB2 MB1 GB
DTLB1st6432N/A
ITLB1st1287 / logical coreN/A
STLB2nd512nonenone

CPU variants
Processing Cores
(Interface)		ProcessDie SizeCPUIDModelSteppingMobileDesktop,
UP Server		DP ServerMP Server
Ten-Core
(Quad-channel)[6]		32 nm513 mm²206F247A2 Westmere-EX
(80615)
Six-Core
(Triple-Channel)		32 nm248 mm²206C0 (ES/QS),
206C1 (ES/QS),
206C2		44A0,
B0,
B1		 Gulftown
(80613)		Westmere-EP
(80614)
Dual-Core (Dual-Channel,
PCIe, Graphics Core)		32 nm
45 nm		114 mm²
+81 mm²		20652
20655		37C2
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.[7][8]
  • Only certain higher-end CPUs support AES-NI and 1GB Huge Pages.

Server / Desktop processors
Codename Market Cores /
Threads		 Socket Processor
Branding & model		 Clock rate Turbo TDP Interfaces L3
cache		 Release
Date		 Price
Core GPU Chipset Memory
Westmere-EX[9] MP Server 10 (20) LGA
1567		 Xeon E7-8870 2.4 GHz N/A Yes 130 W 4× QPI 6.4 GT/s 4× DDR3-1066 30 MB 2011-04-05[10] $4616
E7-4870 $4394
E7-2870 $4227
E7-8867L 2.13 GHz 105 W $4172
E7-8860 2.26 GHz 130 W 24 MB $4061
E7-4860 $3838
E7-2860 $3670
E7-8850 2 GHz $3059
E7-4850 $2837
E7-2850 $2558
8 (8) E7-8837 2.66 GHz $2280
8 (16) E7-8830 2.13 GHz 105 W
E7-4830 $2059
E7-2830 $1779
E7-4820 2 GHz 4× QPI 5.86 GT/s 18 MB $1446
E7-2820 $1334
6 (12) E7-4807 1.86 GHz No 95 W 4× QPI 4.8 GT/s 4× DDR3-800 $890
E7-2803 1.73 GHz 105 W $774
Gulftown /
Westmere-EP[11]		 DP Server 2 (4) LGA
1366		 Xeon X5698[12] 4.4 GHz N/A No 130 W 2× QPI 6.4 GT/s 3× DDR3-1333 12 MB Q1 2011 OEM
6 (12) X5690 3.46 GHz Yes 2011-02-13 $1663
X5680 3.33 GHz 2010-03-16
X5679 3.2 GHz 115 W 2011-02-13 OEM
X5675 3.06 GHz 95 W $1440
X5670 2.93 GHz 2010-03-16
X5660 2.8 GHz $1219
X5650 2.66 GHz $996
E5649 2.53 GHz 80 W 2× QPI 5.86 GT/s 2011-02-13 $774
E5645 2.4 GHz 2010-03-16 $551
L5645 60 W 2011-02-13 OEM
L5640 2.26 GHz 2010-03-16 $996
L5639 2.13 GHz 2011-02-13 OEM
L5638 2.0 GHz 2010-03-16 $958
4 (8) X5687 3.6 GHz 130 W 2× QPI 6.4 GT/s 2011-02-13 $1663
X5677 3.46 GHz 2010-03-16
X5672 3.2 GHz 95 W 2011-02-13 $1440
X5667 3.06 GHz 2010-03-16
X5647 2.93 GHz 130 W 2× QPI 5.86 GT/s 3× DDR3-1066 2011-02-13 $774
E5640 2.66 GHz 80 W 2010-03-16
E5630 2.53 GHz $551
E5620 2.4 GHz $387
L5630 2.13 GHz 40 W $551
L5618 1.86 GHz $530
4 (4) L5609 1.86 GHz No 2× QPI 4.8 GT/s $440
E5607 2.26 GHz 80 W 8 MB 2011-02-13 $276
E5606 2.13 GHz $219
E5603 1.6 GHz 4 MB $188
UP Server 6 (12) Xeon W3690 3.46 GHz N/A Yes 130 W 1× QPI 6.4 GT/s 3× DDR3-1333 12 MB 2011-02-13[13] $999
W3680 3.33 GHz 2010-03-16[14] $999
W3670 3.20 GHz 1× QPI 4.8 GT/s 3× DDR3-1066 2010-08-29 $885
Extreme /
Performance
Desktop		 Core i7
Extreme		 990X 3.46 GHz 1× QPI 6.4 GT/s 2011-02-13 $999
980X 3.33 GHz 2010-03-16
Core i7 980 1× QPI 4.8 GT/s 2011-06-26 $583
970 3.20 GHz 2010-07-17 $583
Clarkdale[15] UP Server 2 (4) LGA
1156		 Xeon L3406 2.26 GHz N/A Yes 30 W DMI 2× DDR3-1066 4 MB 2010-03-16 $189
2 (2) L3403 2.0 GHz 2010-10 $
Mainstream /
Value
Desktop		 2 (4) Core i5 680 3.6 GHz 733 MHz 73 W 2× DDR3-1333 2010-04-18 $294
670 3.46 GHz 2010-01-07 $284
661 3.33 GHz 900 MHz 87 W $196
660 733 MHz 73 W
655K 3.2 GHz 2010-05-30 $216
650 2010-01-07 $176
Core i3 560 3.33 GHz No 2010-08-29 $138
550 3.20 GHz 2010-05-30
540 3.06 GHz 2010-01-07 $133
530 2.93 GHz $113
2 (2) Pentium G6960 533 MHz 2× DDR3-1066 3 MB 2011-01-09 $89
G6951 2.8 GHz Q3 2010 OEM
G6950 2010-01-07 $87
Celeron G1101 2.26 GHz 2 MB $70
Codename Market Cores /
Threads		 Socket Processor
Branding & model		 Core GPU Turbo TDP Chipset Memory L3
cache		 Release
Date		 Price
Clock rate Interfaces

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

Roadmap

The successor to Nehalem and Westmere is Sandy Bridge.

gollark: Kernel-level ones are a bit outdated now though, why not a hypervisor-level antivirus?
gollark: I see, I see.
gollark: "ybot will get back to you within 6 to 8 business weeks."
gollark: Why does "ybot" need a "hwid"?
gollark: It should be, its training data also includes DL papers, but nooooo...

See also

References
  1. Valich, Theo (2009-04-16). "Intel says no to 28nm, focuses on 22nm: Ivy Bridge/Haswell & Larrabee". Archived from the original on 2011-07-08. Retrieved 23 March 2015.
  2. Smalley, Tim (2007-09-19), Westmere is Nehalem's successor, bit-tech.net
  3. Carry-Less Multiplication and Its Usage for Computing The GCM Mode – Intel Software Network, 2008-04-11, retrieved 2009-03-01
  4. Fuad Abazovic (2008-09-16), Westmere 32nm to improve Nehalem features, Fudzilla.com, retrieved 2009-03-01
  5. (PDF) http://software.intel.com/sites/default/files/m/7/c/9/9/c/18976-Nehalem_Uarch_Spring_2008_IDF.pdf. Retrieved January 16, 2013. Missing or empty |title= (help)
  6. Westmere-EX 10 core CPUs announced by Intel at IDF
  7. Bell, Brandon (2009-02-10), Intel CPU Roadmap 2009–2010, FS Media, Inc, retrieved 2009-03-01
  8. CPU list, archived from the original on 2012-03-01
  9. Westmere-EX: Intel Improves their Xeon Flagship
  10. Intel Launches New Xeon Chips with Up to Ten Cores, archived from the original on 2012-07-17, retrieved 2012-08-20
  11. Intel pushes workhorse Xeons to six cores
  12. Hilbert Hagedoorn (March 15, 2011). "Intel ships a 4.4GHz Xeon X5698". The Guru of 3D.
  13. Intel Xeon X5690 - AT80614005913AB (BX80614X5690)
  14. Intel Launches Its Most Secure Data Center Processor, archived from the original on 2011-09-29, retrieved 2018-11-18
  15. Intel Clarkdale Processor, XTREVIEW, 2009-02-09, retrieved 2009-03-01
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