Broadwell (microarchitecture)

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Broadwell
CPUID code 000306D4
L1 cache 64 KB per core
L2 cache 256 KB per core
L3 cache 2–4 MB (shared)
L4 cache 64 MB of eDRAM (Iris Pro models only)
Created 2014
Transistors 14 nm transistors
Last level cache 35 MB
Architecture Haswell x86
Instructions MMX, AES-NI, CLMUL, FMA3
Extensions
Socket(s)
Predecessor
Successor
GPU
  • HD 5300
  • HD 5500
  • HD 6000
  • HD 6100
  • HD 6200
  • HD Graphics
Brand name(s)
    • Core i3
    • Core i5
    • Core i7
    • Core M
    • Celeron
    • Pentium
    • Xeon

Broadwell (formerly known as Rockwell[1]) is Intel's codename for the 14 nanometer die shrink of its Haswell microarchitecture. It is a "tick" in Intel's tick-tock principle as the next step in semiconductor fabrication.[2][3][4] Unlike the previous tick-tock iterations, Broadwell will not completely replace the full range of CPUs from the previous microarchitecture (Haswell), as there will be no low-end desktop CPUs based on Broadwell.[5]

Broadwell's H and C variants will be used in conjunction with Intel 9 Series chipsets (Z97, H97 and HM97), in addition to retaining backward compatibility with some of the Intel 8 Series chipsets.[6]

Expected variants[edit]

Broadwell is expected to be launched in three major variants:[7]

  • BGA package:
    • Broadwell-Y: system on a chip (SoC); 4.5 W and 3.5 W thermal design power (TDP) classes, for tablets and certain ultrabook-class implementations. GT2 GPU will be used, while maximum supported memory is 8 GB of LPDDR3-1600.[8] These will be the first chips to roll out, and are expected for Q3/Q4 2014. At Computex 2014, Intel announced that these chips will be branded as Core M.[9]
    • Broadwell-U: SoC; two TDP classes – 15 W for 2+2 and 2+3 configurations (two cores with a GT2 or GT3 GPU) as well as 28 W for 2+3 configurations.[10] Designed to be used on motherboards with the PCH-LP chipset for Intel's ultrabook and NUC platforms. Maximum supported is up to 16 GB of DDR3 or LPDDR3 memory, with DDR3-1600 and LPDDR3-1867 as the maximum memory speeds. The 2+2 configuration is scheduled for Q4 2014, while the 2+3 is estimated for Q1 2015.[7] For Broadwell-U models with integrated 5x00 GPUs, die size is 82 mm2 with a total of 1.3 billion transistors, while for the models with 6100 and 6200 GPUs the die size is 133 mm2 with a total of 1.9 billion transistors.
    • Broadwell-H: 37 W and 47 W TDP classes, for motherboards with HM86, HM87, QM87 and the new HM97 chipsets for "all-in-one" systems, mini-ITX form-factor motherboards, and other small footprint formats. It may come in two different variants, as single and dual chips; the dual chips (4 cores, 8 threads) will have GT3e and GT2 GPU, while a single chip (SoC; two cores, four threads) will have GT3e GPU. Maximum supported memory is 32 GB of DDR3-1600.[8] These are scheduled for Q2 2015.[7]
  • LGA 1150 socket:
  • LGA 2011-v3 socket:
    • Broadwell-EP: to be marketed as Xeon E5-2600 v4 etc., while using the C610 Wellsburg chipset platform. Up to 18 cores and 36 threads, up to 45 MB of total cache and 40 PCI Express 3.0 lanes, with 70–160 W TDP classes. Maximum supported memory speed is quad-channel DDR4-2400.[12]
    • Broadwell-EX: Brickland platform, for mission-critical servers. Intel QuickPath Interconnect (QPI) is expected to be updated to version 1.1, enabling seamless scaling beyond eight-socket systems. Maximum supported memory speeds are expected to be DDR3-1600 and DDR4-3200.[13][14]

Instruction set extensions[edit]

Broadwell will introduce some instruction set architecture extensions:[15][16]

  • Intel ADX: ADOX and ADCX for improving performance of arbitrary-precision integer operations[17]
  • RDSEED for generating 16-, 32- or 64-bit random numbers from a thermal noise entropy stream, according to NIST SP 800-90B and 800-90C[18]
  • PREFETCHW instruction[18]
  • SMAP (Supervisor Mode Access Prevention) – optionally disallows access from kernel-space memory to user-space memory, a feature aimed at making it harder to exploit software bugs.[citation needed]

New features[edit]

Broadwell's Intel Quick Sync Video hardware video decoder adds VP8 hardware decoding support.[19] Also, it will have two independent bit stream decoder (BSD) rings to process video commands on GT3 GPUs; this will allow one BSD ring to process decoding and the other BSD ring to process encoding at the same time.[20]

Broadwell's integrated GPU supports Direct3D 11.2, OpenGL 4.3 and OpenCL 2.0.[21][22][23]

List of Broadwell processors[edit]

List of announced mobile processors is as follows:

Target segment Cores (threads) Processor branding and model GPU model Base frequency Turbo frequency TDP cTDP down Graphics clock rate L3 cache Release date Price (USD)
Single Core Dual Core Base Max
Mainstream 2(4) Core i7 5650U HD 6000 2.2 GHz 3.2 GHz 3.1 GHz 15 W 600 MHz / 9.5 W 300 MHz 1 GHz 4 MB $426
5600U HD 5500 2.6 GHz 3.2 GHz 3.1 GHz 15 W 600 MHz / 7.5 W 300 MHz 950 MHz 4 MB $393
5557U Iris 6100 3.1 GHz 3.4 GHz 3.4 GHz 28 W N/A / 23 W 300 MHz 1.1 GHz 4 MB $426
5550U HD 6000 2.0 GHz 3.0 GHz 2.9 GHz 15 W 600 MHz / 9.5 W 300 MHz 1 GHz 4 MB $426
5500U HD 5500 2.4 GHz 3.0 GHz 2.9 GHz 15 W 600 MHz / 7.5 W 300 MHz 950 MHz 4 MB $393
Core i5 5350U HD 6000 1.8 GHz 2.9 GHz 2.7 GHz 15 W 600 MHz / 9.5 W 300 MHz 1 GHz 3 MB $315
5300U HD 5500 2.3 GHz 2.9 GHz 2.7 GHz 15 W 600 MHz / 7.5 W 300 MHz 900 MHz 3 MB $281
5287U Iris 6100 2.9 GHz 3.3 GHz 3.3 GHz 28 W 600 MHz / 23 W 300 MHz 1.1 GHz 3 MB $315
5257U Iris 6100 2.7 GHz 3.1 GHz 3.1 GHz 28 W 600 MHz / 23 W 300 MHz 1.05 GHz 3 MB $315
5250U HD 6000 1.6 GHz 2.7 GHz 2.5 GHz 15 W 600 MHz / 9.5 W 300 MHz 950 MHz 3 MB $315
5200U HD 5500 2.2 GHz 2.7 GHz 2.5 GHz 15 W 600 MHz / 7.5 W 300 MHz 900 MHz 3 MB February 2015[24] $281
Core i3 5157U Iris 6100 2.5 GHz N/A N/A 28 W 600 MHz / 23 W 300 MHz 1 GHz 3 MB January 2015 $315
5020U HD 5500 2.2 GHz N/A N/A 15 W 600 MHz / 10 W 300 MHz 900 MHz 3 MB March 2015 $281
5015U HD 5500 2.1 GHz N/A N/A 15 W 600 MHz / 10 W 300 MHz 850 MHz 3 MB March 2015 $275
5010U HD 5500 2.1 GHz N/A N/A 15 W 600 MHz / 10 W 300 MHz 900 MHz 3 MB January 2015 $281
5005U HD 5500 2.0 GHz N/A N/A 15 W 600 MHz / 10 W 300 MHz 850 MHz 3 MB January 2015 $275
Pentium 3825U HD Graphics 1.9 GHz N/A N/A 15 W 600 MHz / 10 W 300 MHz 850 MHz 2 MB March 2015
2(2) 3805U HD Graphics 1.9 GHz N/A N/A 15 W 600 MHz / 10 W 100 MHz 800 MHz 2 MB $161
Celeron 3755U HD Graphics 1.7 GHz N/A N/A 15 W 600 MHz / 10 W 100 MHz 800 MHz 2 MB $107
3205U HD Graphics 1.5 GHz N/A N/A 15 W 600 MHz / 10 W 100 MHz 800 MHz 2 MB $107
Target
segment
Cores
(Threads)
Processor
Branding & Model
GPU Model Programmable TDP[25]:69–72 CPU Turbo Graphics Clock rate L3
Cache
GPU
eDRAM
Release
Date
Price
(USD)
SDP[26][27]:71 cTDP down[a] Nominal TDP[b] cTDP up[c] 1-core Normal Turbo
Mainstream 2 (4)[28] Core M (vPro) 5Y71 HD 5300 
(GT2)[29]
3.5 W 3.5 W / 600 MHz 4.5 W / 1.2 GHz 6 W / 1.4 GHz 2.9 GHz 300 MHz 900 MHz 4 MB N/A October 27, 2014 (2014-10-27) $281
5Y70 N/A N/A 4.5 W / 1.1 GHz N/A 2.6 GHz 100 MHz 850 MHz September 5, 2014 (2014-09-05) $281
Core M 5Y51 3.5 W 3.5 W / 600 MHz 6 W / 1.3 GHz 300 MHz 900 MHz October 27, 2014 (2014-10-27) $281
5Y31 4.5 W / 900 MHz 6 W / 1.1 GHz 2.4 GHz 850 MHz
5Y10c 4.5 W / 800 MHz 6 W / 1 GHz 2.0 GHz 800 MHz
5Y10a N/A N/A N/A 100 MHz September 5, 2014 (2014-09-05) $281
5Y10[30] 4 W / ? MHz
  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.[25]:71–72
  2. This is the processor's rated frequency and TDP.[25]:71–72
  3. When extra cooling is available, this mode specifies a higher TDP and higher guaranteed frequency versus the nominal mode.[25]:71–72


XEON Server processors Broadwell core D-Type

Target segment Cores (threads) Processor branding and model GPU model Base frequency Turbo frequency TDP socket Memory L3 cache Release date Price (USD)
Single Core All Cores Type Channel
SoC Server 8(16) Xeon D D-1540 N/A 2 GHz N/A 2.6 GHz 45 W FCBGA 1667 DDR4 dual 12 MB Q1 2015 $581
4(8) D-1520 N/A 2.2 GHz N/A 2.6 GHz 6 MB Q1 2015 $199

Roadmap and history[edit]

Main article: Intel Tick-Tock

On September 10, 2013, Intel showcased the Broadwell 14 nm processor in a demonstration at IDF. Intel CEO Brian Krzanich claimed that the chip would allow systems to provide a 30 percent improvement in power use over the Haswell chips released in mid-2013. Krzanich also claimed that the chips would ship by the end of 2013;[31] however, the shipment was delayed due to low yields from Intel's 14 nm process.[32]

On October 21, 2013, a leaked Intel roadmap indicated a late 2014 or early 2015 release of the K-series Broadwell on the LGA 1150 platform, in parallel with the previously announced Haswell refresh. This will coincide with the release of Intel's 9-series chipset, which may be required for Broadwell processors due to a change in power specifications for its LGA 1150 socket.[33][34]

On May 18, 2014, Reuters quoted Intel's CEO promising that Broadwell-based PCs will be on shelves for the holiday season, but probably not for the back-to-school shopping.[35]

Mobile CPUs are expected in Q4 2014 and high-performance quad-core CPUs in 2015. The mobile CPUs will benefit from the reduced energy consumption of the die shrink.[36][37]

On June 18, 2014, Intel told CNET that while some specialized Broadwell-based products would be out in Q4 2014, "broader availability" (including mobile CPUs) would only happen in 2015.[38]

As of July 2014, Broadwell CPUs are available to Intel's hardware partners in sample quantities.[39] Intel is expected to release 17 Broadwell U series family microprocessors at CES 2015.[40] Also, according to a leak posted on vr-zone, Broadwell-E chips will be available in 2016.[41]

On August 11, 2014, Intel unveiled formally its 14 nm manufacturing process, which is used for Broadwell, and indicated that mobile variants of the process will be known as Core M products. Additionally, Core M products were announced to be shipping during the end of 2014, with desktop variants shipping shortly after.[42]

Releases[edit]

On September 5, 2014, Intel launched the first three Broadwell-based processors that belong to the low-TDP Core M family, Core M 5Y10, Core M 5Y10a and Core M 5Y70.[43]

On October 9, 2014, the first laptop with Broadwell Intel Core M 5Y70 CPU, Lenovo Yoga 3 Pro, was launched.[44]

On October 31, 2014, four more Broadwell based CPUs were launched belonging to Core M Family, increasing the number of launched Broadwell CPUs to seven.[45]

See also[edit]

References[edit]

  1. ^ "After Intel's Haswell comes Broadwell". semiaccurate.com. Retrieved January 22, 2015. 
  2. ^ "22nm Details" (PDF) (presentation). Intel. Retrieved January 4, 2012. 
  3. ^ Demerjian, Charlie. "After Intel's Haswell comes Broadwell". SemiAccurate. Retrieved January 4, 2012. 
  4. ^ Broekhuijsen, Niels (May 22, 2014). "Intel Broadwell CPUs to Arrive Later This Year". Tom's Hardware. Retrieved May 31, 2014. 
  5. ^ "Lower-end desktop CPUs won’t get Broadwell, will need to wait for Skylake". Ars Technica. 
  6. ^ Reynolds, Sam (August 26, 2013). "Intel's 9-series chipsets will support Broadwell". vr-zone.com. Archived from the original on November 20, 2013. Retrieved November 20, 2013. 
  7. ^ a b c "Intel Broadwell Production Plan Leaked – BDW-H Delayed To May 2015". WCCFTech. Retrieved May 21, 2014. 
  8. ^ a b "Intel’s 14nm Process ‘Broadwell’ Lineup Details Leaked". WCCFTech. Retrieved December 12, 2013. 
  9. ^ Ian Cutress (June 3, 2014). "Intel Keynote at Computex 2014: 14nm Core-M, SoFIA, Devil’s Canyon, DC P3700 and RealSENSE". AnandTech. Retrieved June 5, 2014. 
  10. ^ "Intel Broadwell GPUs to use HD 5x00, Iris 6100 and Iris Pro 6200 branding". cpu-world.com. 
  11. ^ "Intel Broadwell Core i7-5775C and Core i5-5675C Processors With Iris Pro Graphics 6200 Detailed – Launching in Q2 2015". wccftech.com. March 23, 2015. Retrieved March 24, 2015. 
  12. ^ Anton Shilov (December 19, 2013). "Intel Readies 18-Core Xeon "Broadwell-EP" Microprocessors for Launch in 2015". xbitlabs.com. Retrieved December 24, 2013. 
  13. ^ Valich, Theo (January 10, 2014). "Intel Brickland & Grantley Platforms Revealed: Ivy Bridge-EX, Haswell-EX, Broadwell-EX". Vr-zone.com. Retrieved January 19, 2014. 
  14. ^ Novakovic, Nebojsa (January 10, 2014). "Socket 2011 to become the dominant Intel high end physical format even on Xeon EX – but different pin-outs, of course". Vr-zone.com. Retrieved January 19, 2014. 
  15. ^ "Intel® Software Development Emulator | Intel® Developer Zone". Software.intel.com. July 23, 2013. Retrieved October 16, 2013. 
  16. ^ Intel® Architecture Instruction Set Extensions Programming Reference (Document number 319433-013B) // Intel, July 2012, Chapter 9 "ADDITIONAL NEW INSTRUCTIONS"
  17. ^ New Instructions Supporting Large Integer Arithmetic on Intel® Architecture Processors (Document number 327831 -001) // Intel, August 2012
  18. ^ a b Intel® C++ Composer XE 2013 for Windows* Installation Guide and Release Notes (Document number: 321414-004US) // Intel, October 4, 2012; section "3.2.4 Inline assembly and intrinsic support for Intel architecture code named Broadwell added to Composer XE 2013 Update 1", page 13
  19. ^ "VA-API 1.3 Readies Broadwell Support, Adds VP8 Decoding". Phoronix.com. March 18, 2014. Retrieved April 17, 2014. 
  20. ^ "Intel Broadwell GT3 Graphics Have Dual BSD Rings". Phoronix.com. Retrieved April 17, 2014. 
  21. ^ "Intel Iris and HD Graphics Driver for Windows 7/8/8.1 64bit". Intel® Download Center. 
  22. ^ Release notes for driver version 15.36.18.4156 and 15.36.18.64.4156
  23. ^ "The Compute Architecture of Intel Processor Graphics Gen8". 
  24. ^ "Aldi verkoopt laptop met processor van de 5de generatie". Retrieved February 18, 2015. 
  25. ^ 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. December 2013. Retrieved December 22, 2013. 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. 
  26. ^ "The technical details behind Intel's 7 Watt Ivy Bridge CPUs". arstechnica.com. January 14, 2013. Retrieved December 22, 2013. 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. 
  27. ^ "4th Generation Intel Core processor based on Mobile U-Processor and Y-Processor Lines Datasheet, Volume 1 of 2" (PDF). intel.com. December 2013. Retrieved December 22, 2013. 
  28. ^ Ian Cutress. "Intel’s Core M Strategy: CPU Specifications for 9mm Fanless Tablets and 2-in-1 Devices". Retrieved January 6, 2015. 
  29. ^ "Intel launches three Core M CPUs, promises more Broadwell "early 2015"". Ars Technica. Retrieved January 6, 2015. 
  30. ^ "Details of first Broadwell "Y" mobile processors". cpu-world.com. July 2014. Retrieved January 6, 2015. 
  31. ^ "Intel reveals 14nm PC, declares Moore's Law 'alive and well'". The Register. September 10, 2013. Retrieved September 28, 2014. 
  32. ^ "Intel delays Broadwell PC chip production to early next year". CNET. October 15, 2013. Retrieved September 28, 2014. 
  33. ^ "Intel's Broadwell-K launching at end of 2014 according to new roadmap". vr-zone.com. October 21, 2013. Retrieved October 24, 2013. 
  34. ^ Shilov, Anton (August 29, 2013). "Intel Changes Plans: Core i "Broadwell" Processors Will Be Available in LGA Packaging, But There Is a Catch". Xbit Labs. Retrieved October 24, 2013. 
  35. ^ "Exclusive: Intel CEO promises Broadwell PCs on shelves for holidays". reuters.com. May 18, 2014. Retrieved May 17, 2014. 
  36. ^ "Computex 2014: Intels Broadwell kommt rechtzeitig zum Weihnachtsgeschäft". Heise.de. May 22, 2014. Retrieved May 31, 2014. 
  37. ^ Chris.L (May 19, 2014). "2014 年底前絕對見到,14nm Broadwell 處理器最快在 37 周出貨". chinese.vr-zone.com. Retrieved July 19, 2014. 
  38. ^ Crothers, Brooke. "Intel's next-gen processor, Broadwell, is (mostly) a 2015 thing". CNET. Retrieved July 19, 2014. 
  39. ^ Mark Hachman (July 15, 2014). "Intel shipping Broadwell, but next-gen Skylake chip could slip". PCWorld. Retrieved July 19, 2014. 
  40. ^ "Intel to launch Broadwell "U" series CPUs at CES 2015". 
  41. ^ "Intel's Extreme Broadwell-E chips reportedly not coming until early 2016". PC Gamer. 
  42. ^ Hachman, Mark (August 11, 2014). "Intel aims next-gen 14nm 'Broadwell' technology at fanless tablets, Ultrabooks". PCWorld. Retrieved August 15, 2014. 
  43. ^ "Intel launches first Broadwell processors". 
  44. ^ "The first Core M laptop paints a depressing, mediocre picture for Intel’s Broadwell - ExtremeTech". ExtremeTech. 
  45. ^ "Intel to release Core M 5Y10c, 5Y31, 5Y51 and 5Y71 processors". 

External links[edit]