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Ivy Bridge (microarchitecture)

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This article is about the microprocessor. For the microarchitecture used in Ivy Bridge, see Sandy Bridge (microarchitecture).
Ivy Bridge
File:Intel i7 SB 2011.png
General information
LaunchedApril 29, 2012
CPUID code0306A9h
Product code80637 (desktop)
Performance
Max. CPU clock rate1.70 GHz to 3.80 GHz
Cache
L1 cache64 kB per core
L2 cache256 kB per core
L3 cache3 MB to 8 MB shared (future Ivy Bridge Celerons will have only 2 MB)
Architecture and classification
InstructionsMMX, AES-NI, CLMUL
Extensions
Physical specifications
Transistors
Cores
  • 2-4 (4-8)
GPUsHD Graphics 2500
650 MHz to 1150 MHz
Sockets
Products, models, variants
Models
  • Pentium G Series
  • Core i3 Series
  • Core i5 Series
  • Core i7 Series
  • Xeon E3 v2 Series
History
PredecessorSandy Bridge
SuccessorHaswell

Ivy Bridge is a codename line of intel processors based on the 22nm manufacturing process. The name is also applied more broadly to the 22 nm die shrink of the microarchitecture based on tri-gate ("3D") transistors, which is also used in the future Ivy Bridge-EX and Ivy Bridge-EP microprocessors. Ivy Bridge processors are backwards-compatible with the Sandy Bridge platform, but might require a firmware update (vendor specific).[1] Intel has released new 7-series Panther Point chipsets with integrated USB 3.0 to complement Ivy Bridge.[2]

Volume production of Ivy Bridge chips began in the third quarter of 2011.[3] Quad-core and dual-core-mobile models launched on April 29, 2012 and May 31, 2012 respectively.[4] Core i3 desktop processors, as well as the first 22 nm Pentium were launched and available the first week of September, 2012.[5]

Microarchitecture features

The Ivy Bridge CPU microarchitecture is a shrink from Sandy Bridge and remains largely unchanged. Notable improvements include [6][7]

  • 22 nm Tri-gate transistor ("3-D") technology (up to 50% less power consumption at the same performance level as 2-D planar transistors).[8]
  • A new random number generator and the RdRand instruction,[9] codenamed Bull Mountain.[10]

Ivy Bridge processor features

The mobile and desktop Ivy Bridge chips also include significant changes over Sandy Bridge:

Ivy Bridge-E features

The upcoming Ivy Bridge-E processor is expected to be a minor upgrade to Sandy Bridge-E, using the new microarchitecture with up to 10 Cores instead of 8 and an increased third level cache of up to 30 MB [21]. They are going to marketed as Xeon E5 V2 and act as drop-in replacements for the existing Sandy Bridge-EN and Sandy Bridge-EP based Xeon E5. There is no confirmation on whethere there are also going to be Ivy Bridge-E based Core-i7 39xx follow-ups.

The new Ivy Bridge-EX line marketed as Xeon E7 V2 has no corresponding predecessor using the Sandy Bridge microarchitecture but instead follows the older Westmere-EX processors.

Models and steppings

All Ivy Bridge processors with one, two, or four cores report the same CPUID model 0306A9h, and are built in four different configurations differing in the number of cores, L3 cache and GPU execution units.

Die Code Name CPUID Stepping Die size Transistors Cores GPU EUs L3 Cache Sockets
Ivy Bridge-M-2 0306A9h P0 94 mm2[22] 2 6[23] 3 MB[24] LGA 1155,
rPGA988B,
BGA-1224,
BGA-1023
Ivy Bridge-H-2 L1 118 mm2[22] 2 16 4 MB
Ivy Bridge-HE-4 E1 160 mm2[22] 1.4 billion[25] 4 16 8 MB
Ivy Bridge-HM-4 N0 133 mm2[22] 4 6 6 MB[24]

Performance

Compared to Sandy Bridge:

  • 5% to 15% increase in CPU performance when compared clock for clock[26]
  • 25% to 68% increase in integrated GPU performance.[26]

Heat issue when overclocked

Ivy Bridge's temperatures are reportedly 10°C higher compared to Sandy Bridge when overclocked, even at default voltage setting.[27] Impress PC Watch (Japanese) has performed experiments which confirmed earlier speculations that this is because Intel used a poor quality (and perhaps lower cost) thermal interface material (thermal paste, or "TIM") between the chip and the heat spreader, instead of the fluxless solder of previous generations.[28][29][30] The mobile Ivy Bridge processors are not affected by this issue because they do not use a heat spreader between the chip and cooling system.

Enthusiast reports describe the TIM used by Intel as "low-quality",[30] "not up to scratch" for a "premium" CPU, with some speculation that this is by design to allow a longer shelf life for sales of prior processors.[28] Further analyses caution that the processor can be damaged or void its warranty if home users attempt to remedy the matter.[31][28] TIM has much lower thermal conductivity, causing heat to trap on the die.[27] Experiments replacing this with a higher quality TIM or other heat removal methods showed a substantial improvement to the voltages and clocking sustainable by Ivy Bridge chips.[28]

Intel claims that the smaller die of Ivy Bridge and the related increase in thermal density is expected to result in higher temperatures when the CPU is overclocked; Intel also stated that this is as expected and will likely not improve in future revisions.[32]

List of Ivy Bridge processors

Processors featuring Intel's HD 4000 graphics (or HD P4000 for Xeon) are set in bold. Other processors feature HD 2500 graphics unless indicated by N/A.

Desktop processors

List of announced desktop processors as follows:

Target
segment 		Cores
(Threads) 		Processor
Branding & Model 		CPU Clock rate Graphics Clock rate L3
Cache 		TDP Release
Date 		Price
(USD) 		Motherboard
Normal Turbo Normal Turbo Socket Interface Memory
Performance 4 (8) Core i7 3770K 3.5 GHz 3.9 GHz 650 MHz 1150 MHz 8 MB 77 W 2012-04-23 $332 LGA
1155 		DMI 2.0
PCIe 3.0∗ 		Up to dual
channel
DDR3-1600[33]
3770 3.4 GHz $294
3770S 3.1 GHz 65 W
3770T 2.5 GHz 3.7 GHz 45 W
Mainstream 4 (4) Core i5 3570K 3.4 GHz 3.8 GHz 6 MB 77 W $225
3570 2012-05-31[34] $213
3570S 3.1 GHz 65 W $205
3570T 2.3 GHz 3.3 GHz 45 W
3550 3.3 GHz 3.7 GHz 77 W 2012-04-23
3550S 3.0 GHz 65 W
3475S 2.9 GHz 3.6 GHz 1100 MHz 2012-05-31[34] $201
3470 3.2 GHz 77 W $184
3470S 2.9 GHz 65 W
2 (4) 3470T 3 MB 35 W
4 (4) 3450 3.1 GHz 3.5 GHz 6 MB 77 W 2012-04-23
3450S 2.8 GHz 65 W
3350P 3.1 GHz — 69 W 2012-09-03 $177
3330 3.0 GHz 3.2 GHz 650 MHz 1050 MHz 77 W $182
3330S 2.7 GHz 65 W $177
2 (4) Core i3 3240 3.4 GHz — 3 MB 55 W $138 DMI 2.0
PCIe 2.0
3240T 2.9 GHz 35 W $138
3225 3.3 GHz 55 W $134
3220 3.3 GHz $117
3220T 2.8 GHz 35 W $117
2 (2) Pentium G2120 3.1 GHz 55 W $86
G2100T 2.6 GHz 35 W $75
2 (2) Celeron G1620 2.7 GHz 2 MB 55 W Q1 2013 $ ? Dual channel DDR3-1333
G1610 2.6 GHz
G1610T 2.3 GHz 35 W

∗ Requires a compatible Motherboard

Suffixes to denote:

  • K - Unlocked (adjustable CPU multiplier up to 63 bins)
  • S - Performance-optimized lifestyle (low power with 65W TDP)
  • T - Power-optimized lifestyle (ultra low power with 35-45W TDP)

Server processors

Target
Segment 		Cores
(Threads) 		Processor
Branding & Model 		CPU Clock rate Graphics Clock rate L3
Cache 		TDP Release
Date 		Price
(USD) 		Motherboard
Standard Turbo Normal Turbo Socket Interface Memory
1P Server 4 (8) Xeon E3 1290V2 3.7 GHz 4.1 GHz — 8 MB 87 W 2012-05-14 $885 LGA
1155 		DMI 2.0
PCIe 3.0∗ 		Up to dual
channel
DDR3-1600
1280V2 3.6 GHz 4.0 GHz 69 W $623
1275V2 3.5 GHz 3.9 GHz 650 MHz 1.25 GHz 77 W $350
1270V2 — 69 W $339
1265LV2 2.5 GHz 3.5 GHz 650 MHz 1.15 GHz 45 W $305
1245V2 3.4 GHz 3.8 GHz 650 MHz 1.25 GHz 77 W $273
1240V2 — 69 W $261
1230V2 3.3 GHz 3.7 GHz $230
4 (4) 1225V2 3.2 GHz 3.6 GHz 650 MHz 1.25 GHz 77 W $224
1220V2 3.1 GHz 3.5 GHz — 69 W $203
2 (4) 1220LV2 2.3 GHz 3 MB 17 W $189

∗ Requires a compatible Motherboard

Note - Additional high-end server processors based on the Ivy Bridge architecture, code named Ivytown, will arrive in 2013 per the usual one year interval between consumer and server product releases.[citation needed]

Mobile processors

Target
segment 		Cores
(Threads) 		Processor
Branding & Model 		Programmable TDP CPU Turbo Graphics Clock rate L3
Cache 		Release
Date 		Price
(USD)
cTDP down Nominal TDP cTDP up 1-core Normal Turbo
Performance 4 (8) Core i7 3940XM 55W / 3.0GHz 3.9GHz 650 MHz 1350 MHz 8 MB 2012-09-30 $1096
3920XM 45W / ?GHz 55W / 2.9GHz 65W / ?GHz 3.8GHz 1300 MHz 2012-04-23 $1096
3820QM — 45W / 2.7GHz — 3.7GHz 1250 MHz $568
3720QM 45W / 2.6GHz 3.6GHz 6 MB $378
3615QM 45W / 2.3 GHz 3.3GHz 1200 MHz
3612QM 35W / 2.1 GHz 3.1GHz 1100 MHz
3610QM 45W / 2.3 GHz 3.3GHz
Mainstream 2 (4) 3667U 14W / ?GHz 17W / 2.0GHz 25W / 2.5GHz 3.2GHz 350 MHz 1150 MHz 4 MB 2012-05-31 $346
3517U 14W / ?GHz 17W / 1.9GHz 25W / 2.4GHz 3.0GHz
3520M — 35W / 2.9GHz — 3.6GHz 650 MHz 1250 MHz
Core i5 3360M 35W / 2.8GHz 3.5GHz 1200 MHz 3 MB $266
3320M 35W / 2.6GHz 3.3GHz $225
3210M 35W / 2.5GHz 3.1GHz 1100 MHz
3427U 14W / ?GHz 17W / 1.8GHz 25W / 2.3GHz 2.8GHz 350 MHz 1150 MHz
3317U 14W / ?GHz 17W / 1.7GHz — 2.6GHz 1050 MHz
Core i3 3217U 14W / ?GHz 17W / 1.8GHz — 1050 MHz
3120M — 35W / 2.5GHz 650 MHz 1100 MHz
3110M — 35W / 2.4GHz — 1000 MHz
  • M - Mobile processor
  • Q - Quad-core
  • U - Ultra-low power
  • X - 'Extreme'

Roadmap

Intel demonstrated the Haswell architecture in September 2011, planned for release in 2013 as the successor to Sandy Bridge and Ivy Bridge.[35]

See also

References

  1. ^ http://www.techpowerup.com/153756/Ivy-Bridge-Quad-Core-to-Have-77W-TDP-Intel-Plans-for-LGA1155-Ivy-Bridge-Entry.html
  2. ^ Anand Lal Shimpi (June 1, 2011). "Correction: Ivy Bridge and Thunderbolt - Featured, not Integrated". AnandTech. Retrieved November 11, 2011.
  3. ^ Gruener, Wolfgang (2011-10-19). "Intel to Sell Ivy Bridge Late in Q4 2011". Tom's Hardware. Retrieved 2011-11-11.
  4. ^ Demerjian, Charlie (2012-04-23). "Intel launches Ivy Bridge amid crushing marketing buzzwords". SemiAccurate. Retrieved 2012-05-25.
  5. ^ http://www.anandtech.com/show/6249/intels-pentium-and-core-i3-desktop-ivy-bridge-cpus-arrive
  6. ^ Webster, Clive (2011-10-10). "Ivy Bridge Media Upgrades and Security Features". bit-tech. Dennis Publishing Limited.
  7. ^ Shvets, Gennadiy (2011-11-27). "Ivy Bridge desktop CPU lineup details". CPU World.
  8. ^ "Intel Reinvents Transistors Using New 3-D structure". Intel. Retrieved 2011-05-04.
  9. ^ Taylor, Greg; Cox, George (2011). "Behind Intel's New Random-Number Generator". Spectrum. IEEE. {{cite web}}: Unknown parameter |month= ignored (help)
  10. ^ "Bull Mountain Software Implementation Guide". Intel. 2011-06-12. Retrieved 2011-12-04.
  11. ^ Delahunty, James (2011-03-30). "Intel Ivy Bridge chips feature PCI Express 3.0". After Dawn News. Retrieved 2011-11-11.
  12. ^ a b "Ivy Bridge Overclocking: Ratio Changes Without Reboot, More Ratios and DDR3-2800". Retrieved 21 February 2012.
  13. ^ a b Vättö, Kristian (2011-05-06). "Intel's Roadmap: Ivy Bridge, Panther Point, and SSDs". AnandTech. Retrieved 2011-11-11.
  14. ^ "Ivy Bridge processors". Ivy Bridge Laptops. 18 January 2012. Retrieved 3 March 2012.[dead link]
  15. ^ "Intel HD Graphics Driver v2729 with OpenGL 4 Support and New OpenGL Extensions! - 3D Tech News and Pixel Hacking". Geeks3D.com. Retrieved 2012-05-25.
  16. ^ http://www.geeks3d.com/20120618/intel-hd-graphics-driver-v2770-available-for-windows-8-new-opengl-extensions/
  17. ^ http://www.geeks3d.com/20120716/intel-hd-graphics-driver-v2792-for-win7-and-win8/
  18. ^ Karmehed, Anton (2011-05-31). "Intel Ivy Bridge gets variable TDP and Thunderbolt". NHW.
  19. ^ "Compatibility Report for 6Gb/s SATA+SAS HBAs" (PDF). Retrieved 2012-10-08.
  20. ^ LG Nilsson, Most desktop Ivy Bridge systems won't support three displays // VR Zone, March 31 2012
  21. ^ "Intel roadmap reveals 10-core Xeon E5-2600 V2 Ivy Bridge CPU". Retrieved 2013-01-03.
  22. ^ a b c d "Mobile 3rd Generation Intel® Core™ Processor Family Datasheet" (PDF). Intel. 2012-04-23.
  23. ^ "The Intel Ivy Bridge (Core i7 3770K) Review". AnandTech. Retrieved 2012-05-25.
  24. ^ a b Hiroshige Goto (2012-02-22). "Ivy Bridge Modular Design".
  25. ^ "Ivy Bridge: 1.4B Transistors".
  26. ^ a b "The Ivy Bridge Preview: Core i7 3770K Tested". AnandTech. Retrieved 2012-05-25.
  27. ^ a b "Intel's Ivy Bridge Hotter Than Sandy Bridge When Overclocked".
  28. ^ a b c d "Ivy Bridge proven to suffer from poor thermal grease by". Vr-zone.com. 2012-05-11. Retrieved 2012-05-25.
  29. ^ "TIM is Behind Ivy Bridge Temperatures After All".
  30. ^ a b Intel to Officially Enable Better Overclocking in Haswell
  31. ^ http://www.tweaktown.com/news/24059/ivy_bridge_s_heat_problem_is_indeed_caused_by_intel_s_tim_choice/index.html
  32. ^ "Intel admits Ivy Bridge chips run hotter". The Inquirer. Retrieved 2012-05-25.
  33. ^ "Intel® Core™ i7-3770K Processor (8M Cache, up to 3.90 GHz)". Ark.intel.com. Retrieved 2012-05-25.
  34. ^ a b "Intel details 14 dual-core Ivy Bridge processors ahead of Computex". Retrieved 2012-09-30.
  35. ^ Crothers, Brooke (September 14, 2011). "Haswell chip completes Ultrabook 'revolution'". The Circuits Blog. CNET.com. Retrieved November 11, 2011.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=Ivy_Bridge_(microarchitecture)&oldid=531064810"