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Haswell (microarchitecture)

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Haswell
General information
Launched2013
Product code80646 (desktop)
Cache
L1 cache64 KB per core
L2 cache256 KB per core
L3 cache2 MB to 8 MB shared
L4 cachen/a or 128 MB (Iris Pro models)
Architecture and classification
InstructionsMMX, AES-NI, CLMUL, FMA3
Extensions
Physical specifications
Transistors
Cores
  • 2-4
  • 6+ (Extreme)
  • 8+ (Xeon)
GPUsHD Graphics 4200, 4400,
4600, 5000, Iris 5100
or Iris Pro 5200
200 MHz to 1.3 GHz
Sockets
Products, models, variants
Models
  • Core i3 Series
  • Core i5 Series
  • Core i7 Series
History
PredecessorsSandy Bridge (tock)
Ivy Bridge (tick)
SuccessorsBroadwell (tick)
Skylake (tock)

Haswell is the codename for a processor microarchitecture developed by Intel as the successor to the Ivy Bridge architecture.[1] It uses the 22 nm process.[2] Intel officially announced CPUs with this microarchitecture on June 4, 2013 at Computex Taipei 2013.[3] With Haswell, Intel introduced a low-power processor designed for convertible or 'hybrid' Ultrabooks, having the Y suffix. Intel demonstrated a working Haswell chip at the 2011 Intel Developer Forum.[4]

Haswell CPUs are used in conjunction with the Intel 8 Series chipsets.

Design

A Haswell wafer with a pin for scale.

The Haswell architecture is specifically designed[5] to optimize the power savings and performance benefits from the move to FinFET (non-planar, "3D") transistors on the improved 22 nm process node.[6]

Haswell has been launched in three major forms:[7]

  1. Desktop version (LGA1150 socket): Haswell-DT
  2. Mobile/Laptop version (PGA socket): Haswell-MB
  3. BGA version:
    • 47 W and 57 W TDP classes: Haswell-H (For "All-in-one" systems, Mini-ITX form factor motherboards, and other small footprint formats.)
    • 13.5 W and 15 W TDP classes (MCP): Haswell-ULT (For Intel's UltraBook platform.)
    • 10 W TDP class (SoC): Haswell-ULX (For tablets and certain UltraBook-class implementations.)

Notes

  • ULT = Ultra Low TDP; ULX = Ultra Low eXtreme TDP.
  • Only certain quad-core variants and BGA R-series SKUs will receive GT3 (Intel HD 5000, Intel Iris 5100), or GT3e (Intel Iris Pro 5200) integrated graphics. All other models will get GT2 (Intel HD 4X00) integrated graphics.[8] See also Intel HD Graphics for more detailed specifications.
  • Due to low power requirements of tablet and UltraBook platforms, Haswell-ULT and Haswell-ULX will only be available in dual-core. All other versions will be available in dual- or quad-core variants.

Performance

Compared to Ivy Bridge:

  • Approximately 8% better vector processing performance.[9]
  • Up to 6% faster single-threaded performance.
  • 6% faster multi-threaded performance.
  • Desktop variants of Haswell draw between 8% and 23% more power under load than Ivy Bridge.[9][10][11]
  • A 6% increase in sequential CPU performance (eight execution ports per core versus six).[9]
  • Up to 20% performance increase over the integrated HD4000 GPU (Haswell HD4600 vs Ivy Bridge's built-in Intel HD4000).[9]
  • Total performance improvement on average is about 3%.[9]
  • Around 15 °C hotter than Ivy Bridge and unable to break 4.2 GHz easily.[12][13][14][15][16][17]

Technology

See also: Intel HD Graphics

Features carried over from Ivy Bridge

New features

  • Wider core: fourth ALU, third AGU, second branch prediction unit, deeper buffers, higher cache bandwidth, improved front-end and memory controller
  • New instructions[22] (HNI, includes Advanced Vector Extensions 2 (AVX2), gather, BMI1+BMI2, LZCNT and FMA3 support).[23]
  • The instruction decode queue, which holds instructions after they have been decoded, is no longer statically partitioned between the two threads that each core can service.[18]
  • New sockets and chipsets:
    • LGA 1150 for desktops, and rPGA947 and BGA1364 for the mobile market.[24]
    • Z97 (performance) and H97 (mainstream) chipsets for the Haswell Refresh and Broadwell, in Q2 2014.[25]
    • LGA 2011-3 with X99 chipset for the Enthusiast-Class Desktop Platform Haswell-E.[26]
  • Intel Transactional Synchronization Extensions (TSX), on selected models[27]
  • Hardware graphics support for Direct3D 11.1 and OpenGL 4.2.[28][29]
  • DDR4 for the enterprise/server variant (Haswell-EX)[30] and for the Enthusiast-Class Desktop Platform Haswell-E[31]
  • Variable Base clock (BClk)[32] like LGA 2011.[33]
  • Four versions of the integrated GPU: GT1, GT2, GT3 and GT3e, where GT3 version has 40 execution units (EUs). Haswell's predecessor, Ivy Bridge, has a maximum of 16 EUs. GT3e version with 40 EUs and on-package 128 MB of embedded DRAM (eDRAM), called Crystal Well, is available only in mobile H-SKUs and desktop (BGA-only) R-SKUs. Effectively, this eDRAM is a Level 4 cache; it is shared dynamically between the on-die GPU and CPU, and serving as a victim cache to the CPU's Level 3 cache.[34][35][36][37][38]
  • Support for Thunderbolt technology and Thunderbolt 2.0[39]
  • Fully integrated voltage regulator (FIVR), thereby moving some of the components from motherboard onto the CPU.[40][41][42] FIVR is implemented as a separate 13x8 mm on-package die, manufactured in 90 nm process.[43]
  • New advanced power-saving system
  • 37, 47, 57 W thermal design power (TDP) mobile processors.[19]
  • 35, 45, 65, 84, 95 and 130–140 W (high-end, Haswell-E) TDP desktop processors.[19]
  • 15 W TDP processors for the Ultrabook platform (multi-chip package like Westmere)[44] leading to reduced heat which results in thinner as well as lighter Ultrabooks, but performance level will be lower than the 17 W version.[45]
  • Shrink of the Platform Controller Hub (PCH), from 65 nm to 32 nm.[46]
Translation lookaside buffer sizes[47][48]
Cache Page Size
Name Level 4 KB 2 MB 1 GB
DTLB 1st 64 32 4
ITLB 1st 128 8 / logical core none
STLB 2nd 1024 none

Expected Server features

  • Release not before end of 2014.
  • Haswell-EP having up to 14–15 cores, and Haswell-EX with up to 18–20 cores.
  • A new cache design.
  • Up to 35 MB total unified cache (Last Level Cache (LLC)) for Haswell-EP[49][50] and up to 40 MB for Haswell-EX.
  • It is possible that Socket R3 will replace LGA 2011 for server Haswells.[51][52]

List of Haswell processors

Desktop processors

  • Intel HD Graphics in following variants:
    • R-series desktop processors feature Intel Iris Pro 5200 graphics (GT3e).[54]
    • All other currently known i3, i5 and i7 desktop processors include Intel HD 4600 graphics (GT2).[55]
    • The exceptions are processors 4130 and 4130T, which include HD 4400 graphics (GT2).
    • Pentium processors contain Intel HD Graphics (GT1).
  • Haswell-based desktop Celerons are planned for the first quarter of 2014.[56]

List of announced desktop processors is as follows:

Target
segment 		Cores
(Threads) 		Processor
Branding & Model 		CPU Clock rate Graphics Clock rate L3
Cache 		GPU
eDRAM 		TDP Release
Date 		Release
price
(USD) 		Motherboard
Normal Turbo Normal Turbo Socket Interface Memory
Performance 4 (8) Core i7 4771 3.5 GHz 3.9 GHz 350 MHz[57] 1.2 GHz 8 MB — 84 W September 1, 2013 (2013-09-01) $320 LGA
1150 		DMI 2.0
PCIe 3.0[a] 		Up to dual
channel
DDR3-1600[58]
4770K 1.25 GHz June 2, 2013 (2013-06-02)[59] $339
4770 3.4 GHz 1.2 GHz $303
4770S 3.1 GHz 65 W
4770R 3.2 GHz 200 MHz 1.3 GHz 6 MB 128 MB $392 BGA
4770T 2.5 GHz 3.7 GHz 350 MHz[57] 1.2 GHz 8 MB — 45 W $303 LGA
1150
4770TE 2.3 GHz 3.3 GHz 1 GHz
4765T 2.0 GHz 3.0 GHz 1.2 GHz 35 W
Mainstream 4 (4) Core i5 4670K 3.4 GHz 3.8 GHz 6 MB 84 W $242
4670 $213
4670S 3.1 GHz 65 W
4670R 3.0 GHz 3.7 GHz 200 MHz 1.3 GHz 4 MB 128 MB $310 BGA
4670T 2.3 GHz 3.3 GHz 350 MHz[57] 1.2 GHz 6 MB — 45 W $213 LGA
1150
4570 3.2 GHz 3.6 GHz 1.15 GHz 84 W $192
4570S 2.9 GHz 65 W
4570R 2.7 GHz 3.2 GHz 200 MHz 4 MB 128 MB $288 BGA
2 (4) 4570T 2.9 GHz 3.6 GHz — 35 W $192 LGA
1150
4570TE 2.7 GHz 3.3 GHz 350 MHz[57] 1 GHz
4 (4) 4440 3.1 GHz 3.3 GHz 1.1 GHz 6 MB 84 W September 1, 2013 (2013-09-01) $187
4440S 2.8 GHz 65 W
4430 3.0 GHz 3.2 GHz 84 W June 2, 2013 (2013-06-02)[59] $182
4430S 2.7 GHz 65 W
2 (4) Core i3 4340 3.6 GHz — 1.15 GHz 4 MB 54 W September 1, 2013 (2013-09-01) $157
4330 3.5 GHz $147
4330T 3.0 GHz 200 MHz 35 W $138
4330TE 2.4 GHz 350 MHz 1 GHz $122
4130 3.4 GHz 1.15 GHz 3 MB 54 W $129
4130T 2.9 GHz 200 MHz 35 W $131
2 (2) Pentium G3430 3.3 GHz 350 MHz 1.1 GHz 54 W $93
G3420 3.2 GHz 1.15 GHz $82
G3420T 2.7 GHz 200 MHz 1.1 GHz 35 W $75
G3320TE 2.3 GHz 350 MHz 1 GHz $70
G3220 3.0 GHz 1.1 GHz 54 W $64 Up to dual
channel
DDR3-1333
G3220T 2.6 GHz 200 MHz 35 W $64
  1. Requires a compatible motherboard.

Suffixes to denote:

  • K - Unlocked (adjustable CPU multiplier up to 63x)
  • S - Performance-optimized lifestyle (low power with 65 W TDP)
  • T - Power-optimized lifestyle (ultra low power with 35–45 W TDP)
  • R - BGA packaging / High performance GPU (currently Iris Pro 5200 (GT3e))

Server processors

List of announced server processors as follows:

Target
segment 		Cores
(Threads) 		Processor
Branding & Model 		GPU Model CPU Clock rate Graphics Clock rate L3
Cache 		TDP Release
Date 		Release
price
(USD)
tray / box 		Motherboard
Normal Turbo Normal Turbo Socket Interface Memory
 Server 4 (8) Xeon E3 1285v3 HD P4700 (GT2) 3.6 GHz 4.0 GHz 350 MHz 1.3 GHz 8 MB 84 W June 2, 2013 (2013-06-02) $662 / — LGA
1150 		DMI 2.0
PCIe 3.0[a] 		up to dual
channel
DDR3-1600
w/ ECC
1285Lv3 3.1 GHz 3.9 GHz 1.25 GHz 65 W $774 / —
1280v3 — 3.6 GHz 4.0 GHz — 82 W $612 / —
1275v3 HD P4600 (GT2) 3.5 GHz 3.9 GHz 350 MHz 1.25 GHz 84 W $339 / $350
1270v3 — — 80 W $328 / —
1268Lv3 HD P4600 (GT2) 2.3 GHz 3.3 GHz 350 MHz 1 GHz 45 W $310 / —
1265Lv3 HD (GT1) 2.5 GHz 3.7 GHz 1.2 GHz $294 / —
1245v3 HD P4600 (GT2) 3.4 GHz 3.8 GHz 84 W $276 / $287
1240v3 — — 80 W $262 / $273
1230v3 3.3 GHz 3.7 GHz $240 / $250
1230Lv3 1.8 GHz 2.8 GHz 25 W $250 / —
4 (4) 1225v3 HD P4600 (GT2) 3.2 GHz 3.6 GHz 350 MHz 1.2 GHz 84 W $213 / $224
1220v3 — 3.1 GHz 3.5 GHz — 80 W $193 / —
2 (4) 1220Lv3 1.1 GHz 1.3 GHz 4 MB 13 W September 1, 2013 (2013-09-01)
  1. Requires a compatible motherboard.

Suffixes to denote:

  • L - Low power

Mobile processors

List of announced mobile processors as follows:

Target
segment 		Cores
(Threads) 		Processor
Branding & Model 		GPU Model Programmable TDP[61]: 69–72  CPU Turbo Graphics Clock rate L3
Cache 		GPU
eDRAM 		Release
Date 		Price
(USD)
SDP[62][63]: 71  cTDP down[a] Nominal TDP[b] cTDP up[c] 1-core Normal Turbo
Performance  4 (8)  Core i7 4930MX HD 4600 (GT2) — — 57 W / 3.0 GHz 65 W / 3.7 GHz  3.9 GHz 400 MHz 1350 MHz 8 MB — June 2, 2013 (2013-06-02)[64] $1096
4960HQ Iris Pro 5200 (GT3e) — 47 W / 2.6 GHz 55 W / 3.6 GHz  3.8 GHz 200 MHz 1300 MHz 6 MB 128 MB[35] September 1, 2013 (2013-09-01)[65] $657
4950HQ 47 W / 2.4 GHz 55 W / 3.4 GHz  3.6 GHz June 2, 2013 (2013-06-02)[64]
4900MQ HD 4600 (GT2) 47 W / 2.8 GHz 55 W / 3.6 GHz  3.8 GHz 400 MHz 8 MB — $570
4860EQ Iris Pro 5200 (GT3e) 47 W / 1.8 GHz —  3.2 GHz 750 MHz 1000 MHz 6 MB 128 MB August 2012 $508
4850EQ 47 W / 1.6 GHz 650 MHz $466
4850HQ 47 W / 2.3 GHz 55 W / 3.3 GHz  3.5 GHz 200 MHz 1300 MHz June 2, 2013 (2013-06-02)[64] $468
4800MQ HD 4600 (GT2) 47 W / 2.7 GHz 55 W / 3.5 GHz  3.7 GHz 400 MHz — $380
4750HQ Iris Pro 5200 (GT3e) 47 W / 2.0 GHz 55 W / 3.0 GHz  3.2 GHz 200 MHz 1200 MHz 128 MB $440
4702MQ HD 4600 (GT2) 37 W / 2.2 GHz 45 W / 2.9 GHz 400 MHz 1150 MHz — $383
4702HQ
4700MQ 47 W / 2.4 GHz 55 W / 3.2 GHz  3.4 GHz
4700HQ 1200 MHz
4700EQ 1000 MHz $378
Mainstream  2 (4) 4650U HD 5000 (GT3) 11.5 W / 800 MHz 15 W / 1.7 GHz —  3.3 GHz 200 MHz 1100 MHz 4 MB $454
4610Y HD 4200 (GT2) 6 W / 800 MHz 9.5 W / 800 MHz 11.5 W / 1.7 GHz  2.9 GHz 850 MHz September 1, 2013 (2013-09-01) —
4600M HD 4600 (GT2) — — 37 W / 2.9 GHz  3.6 GHz 400 MHz 1300 MHz $346
4600U HD 4400 (GT2) 11.5 W / 800 MHz 15 W / 2.1 GHz  3.3 GHz 200 MHz 1100 MHz $398
4558U Iris 5100 (GT3) 23 W / 800 MHz 28 W / 2.8 GHz 1200 MHz June 2, 2013 (2013-06-02)[64] $454
4550U HD 5000 (GT3) 11.5 W / 800 MHz 15 W / 1.5 GHz  3.0 GHz 1100 MHz
4500U HD 4400 (GT2) 15 W / 1.8 GHz 25 W / ? $398
 Core i5 4402E HD 4600 (GT2) — 25 W / 1.6 GHz —  2.7 GHz 400 MHz 900 MHz 3 MB September 1, 2013 (2013-09-01) $266
4400E — 37 W / 2.7 GHz  3.3 GHz 1000 MHz
4350U HD 5000 (GT3) 11.5 W / 800 MHz 15 W / 1.4 GHz  2.9 GHz 200 MHz 1100 MHz June 2, 2013 (2013-06-02)[64] $342
4330M HD 4600 (GT2) — 37 W / 2.8 GHz  3.5 GHz 400 MHz 1250 MHz September 1, 2013 (2013-09-01) $266
4302Y HD 4200 (GT2) 4.5 W / 800 MHz — 11.5 W / 1.6 GHz  2.3 GHz 200 MHz 850 MHz —
4300Y 6 W / 800 MHz 9.5 W / 800 MHz $304
4300M HD 4600 (GT2) — — 37 W / 2.6 GHz  3.3 GHz 400 MHz 1250 MHz $225
4300U HD 4400 (GT2) 11.5 W / 800 MHz 15 W / 1.9 GHz  2.9 GHz 200 MHz 1100 MHz $287
4288U Iris 5100 (GT3) 23 W / 800 MHz 28 W / 2.6 GHz  3.1 GHz 1200 MHz June 2, 2013 (2013-06-02)[64] $342
4258U 28 W / 2.4 GHz  2.9 GHz 1100 MHz
4250U HD 5000 (GT3) 11.5 W / 800 MHz 15 W / 1.3 GHz  2.6 GHz 1000 MHz
4210Y HD 4200 (GT2) 6 W / 800 MHz 9.5 W / 800 MHz 11.5 W / 1.5 GHz  1.9 GHz 850 MHz September 1, 2013 (2013-09-01) $304
4202Y 4.5 W / 800 MHz — 11.5 W / 1.6 GHz  2.0 GHz —
4200Y 6 W / 800 MHz 9.5 W / 800 MHz 11.5 W / 1.4 GHz  1.9 GHz June 2, 2013 (2013-06-02)[64] $304
4200U HD 4400 (GT2) — 11.5 W / 800 MHz 15 W / 1.6 GHz 25 W / ?  2.6 GHz 1000 MHz $287
4200H HD 4600 (GT2) — 47 W / 2.8 GHz —  3.4 GHz 400 MHz 1150 MHz September 1, 2013 (2013-09-01) $257
4200M — 37 W / 2.5 GHz  3.1 GHz $240
 Core i3 4158U Iris 5100 (GT3) 23 W / 800 MHz 28 W / 2.0 GHz — 200 MHz 1100 MHz June 2, 2013 (2013-06-02)[64] $342
4102E HD 4600 (GT2) — 25 W / 1.6 GHz 400 MHz 900 MHz September 1, 2013 (2013-09-01) $225
4100E — 37 W / 2.4 GHz
4100M — 37 W / 2.5 GHz 1100 MHz —
4100U HD 4400 (GT2) 11.5 W / 800 MHz 15 W / 1.8 GHz 200 MHz 1000 MHz June 2, 2013 (2013-06-02)[64] $287
4020Y HD 4200 (GT2) 6 W / 800 MHz 9.5 W / 800 MHz 11.5 W / 1.5 GHz 850 MHz September 1, 2013 (2013-09-01) $304
4012Y 4.5 W / 800 MHz — —
4010Y 6 W / 800 MHz 9.5 W / 800 MHz 11.5 W / 1.3 GHz June 2, 2013 (2013-06-02)[64] $304
4010U HD 4400 (GT2) — 11.5 W / 800 MHz 15 W / 1.7 GHz 1000 MHz $287
4005U 950 MHz September 1, 2013 (2013-09-01) $281
4000M HD 4600 (GT2) — 37 W / 2.4 GHz 400 MHz 1100 MHz $240
 2 (2)  Pentium 3560Y HD Graphics 6 W / 800 MHz — 11.5 W / 1.2 GHz 200 MHz 850 MHz 2 MB —
3556U — 15 W / 1.7 GHz 1000 MHz
3550M 37 W / 2.3 GHz 400 MHz 1100 MHz
 Celeron 2980U 15 W / 1.6 GHz 200 MHz 1000 MHz $137
2955U 15 W / 1.4 GHz $132
2950M 37 W / 2.0 GHz 400 MHz 1100 MHz $86
  1. When a cooler or quieter mode of operation is desired, this mode specifies a lower TDP and lower guaranteed frequency versus the nominal mode.[61]: 71–72 
  2. This is the processor's rated frequency and TDP.[61]: 71–72 
  3. When extra cooling is available, this mode specifies a higher TDP and higher guaranteed frequency versus the nominal mode.[61]: 71–72 

Suffixes to denote:

  • M - Mobile processor
  • Q - Quad-core
  • U - Ultra-low power
  • X - 'Extreme'
  • Y - Extreme-low power
  • H - BGA1364 packaging

Roadmap

The main article for this category is Intel Tick-Tock.

The Skylake microarchitecture will be the successor to the Haswell and Broadwell architectures.

See also

References

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  49. ^ "Intelu unikly detaily o čipu Haswell-EP s podporou pamětí DDR4". Retrieved 2013-10-05.
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  61. ^ a b c d "4th Generation Intel Core processor based on Mobile M-Processor and H-Processor Lines Datasheet, Volume 1 of 2" (PDF). intel.com. 2013. Retrieved 2013-12-22. Configurable TDP (cTDP) and Low-Power Mode (LPM) form a design vector where the processor behavior and package TDP are dynamically adjusted to a desired system performance and power envelope. [...] With cTDP, the processor is now capable of altering the maximum sustained power with an alternate guaranteed frequency. Configurable TDP allows operation in situations where extra cooling is available or situations where a cooler and quieter mode of operation is desired. {{cite web}}: Unknown parameter |month= ignored (help)
  62. ^ "The technical details behind Intel's 7 Watt Ivy Bridge CPUs". arstechnica.com. 2013-01-14. Retrieved 2013-12-22. If the CPU needs to work hard for an extended period of time and the laptop gets warmer, it will slowly ramp down its speed until it's operating at its stated TDP. [...] There are two OEM-configurable "power level" states that define how quick the CPU can be in these situations: PL2 tells the processor how much power it's allowed to use when it needs a short burst of speed, and PL1 defines how quickly the processor can run under sustained load. [...] This is at the heart of what Intel is doing with the Y-series processors: their maximum TDP has been lowered four watts, from 17 to 13. Intel is also validating them for use at two lower PL1 values: 10 watts and 7 watts. This is where the marketing we discussed earlier comes in—rather than keeping these values under the covers as it has so far been content to do, Intel has taken that lowest value, put it on its product pages, and called it SDP.
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