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Broadwell (microarchitecture)

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(Redirected from Broadwell-U)
Not to be confused with Broadway (microprocessor).

Broadwell
General information
LaunchedOctober 27, 2014; 10 years ago (October 27, 2014)
DiscontinuedNovember 2018[1]
Marketed byIntel
Designed byIntel
Common manufacturer
  • Intel
CPUID code0306D4h
Product code
  • 80658 (mainstream desktop/mobile, Xeon E3)
  • 80660 (Xeon E5)
  • 80669 (Xeon E7)
  • 80671 (enthusiast desktop)
  • 80674 (Xeon D)
  • 80682 (Xeon D, Hewitt Lake)
Performance
QPI speeds6.4 GT/s to 9.6 GT/s
DMI speeds4 GT/s
Cache
L1 cache64 KB per core
L2 cache256 KB per core
L3 cache2-6 MB (shared)
L4 cache128 MB of eDRAM (Iris Pro models only)
Architecture and classification
Technology node14 nm (Tri-Gate)
MicroarchitectureHaswell
Instruction setx86-16, IA-32, x86-64
Extensions
Physical specifications
Cores
    • 2–4 (mainstream)
    • 6–10 (enthusiast)
    • 4–24 (Xeon)
GPUs
  • HD 5300
  • HD 5500
  • HD 5700P
  • HD 6000
  • HD 6100
  • HD 6200
  • HD 6300P
  • HD Graphics
Sockets
Products, models, variants
Product code name
  • Rockwell
Brand name
History
Predecessors
SuccessorSkylake (tock/architecture)
Support status
Unsupported
Haswell and Broadwell feature a Fully Integrated Voltage Regulator.

Broadwell (previously Rockwell) is the fifth generation of the Intel Core processor. It 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] Like some of the previous tick-tock iterations, Broadwell did not completely replace the full range of CPUs from the previous microarchitecture (Haswell), as there were no low-end desktop CPUs based on Broadwell.[5]

Some of the processors based on the Broadwell microarchitecture are marketed as "5th-generation Core" i3, i5 and i7 processors. This moniker is however not used for marketing of the Broadwell-based Celeron, Pentium or Xeon chips. This microarchitecture also introduced the Core M processor branding.

Broadwell is the last Intel platform on which Windows 7 is supported by either Intel or Microsoft; however, third-party hardware vendors have offered limited Windows 7 support on more recent platforms.[6]

Broadwell's H and C variants are used in conjunction with Intel 9 Series chipsets (Z97, H97 and HM97),[7] in addition to retaining backward compatibility with some of the Intel 8 Series chipsets.[citation needed]

Design and variants

[edit]

Broadwell has been launched in three major variants:[8]

  • 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 was used, while maximum supported memory is 8 GB of LPDDR3-1600.[9] These were the first chips to roll out, in Q3/Q4 2014. At Computex 2014, Intel announced that these chips would be branded as Core M.[10] TSX instructions are disabled in this series of processors because a bug that cannot be fixed with a microcode update exists.[11]
    • 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.[12] 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.[8] 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 was expected to come in two different variants, as single and dual chips; the dual chips (4 cores, 8 threads) would have GT3e and GT2 GPU, while a single chip (SoC; two cores, four threads) would have GT3e GPU. Maximum supported memory is 32 GB of DDR3-1600.[9] These are scheduled for Q2 2015.[8]
  • LGA 1150 socket:
  • LGA 2011-1 socket:
    • 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 DDR4-1866.[14][15] Up to 24 core and 48 threads, up to 60 MB of L3 cache and 32 PCI Express 3.0 lanes, with 115–165 W TDP.
  • LGA 2011-v3 socket:
    Intel i7 6800K
    • Broadwell-EP: to be marketed as Xeon E5-2600 v4 etc., while using the C610 Wellsburg chipset platform. Up to 22 cores and 44 threads, up to 55 MB of total cache and 40 PCI Express 3.0 lanes, with 55–160 W TDP classes. Maximum supported memory speed is quad-channel DDR4-2400.[16]
    • Broadwell-E: HEDT platform, for enthusiasts. Announced at Computex 2016, it was released in July that year. Consisting of four processors: the 6800K, 6850K, 6900K, and the deca-core 6950X, with clock speeds ranging from 3 GHz to 4 GHz as well as up to 25 MB of L3 cache.

Instruction set extensions

[edit]

Broadwell introduces some instruction set architecture extensions:[17][18]

  • Intel ADX: ADOX and ADCX for improving performance of arbitrary-precision integer operations[19]
  • 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[20]
  • PREFETCHW instruction[20]
  • Supervisor Mode Access Prevention (SMAP) – optionally disallows access from kernel-space memory to user-space memory, a feature aimed at making it harder to exploit software bugs.[21]
  • Transactional Synchronization Extensions: This instruction set is reintroduced for all versions of Broadwell except for Broadwell-Y because a bug that cannot be fixed via microcode update in Broadwell-Y and all versions of Haswell except for the Haswell-EX variants has been fixed with a new CPU stepping level.[11] Erratum: In fact, among Broadwell i3, i5 and i7 CPUs, only four of them support TSX instructions (i7 5650U and 5600U, i5 5350U and 5300U); it is not even precised on Intel's website whether i5 5200U does support TSX instructions. (ark.intel.com/products/)

New features

[edit]

Broadwell's Intel Quick Sync Video hardware video decoder adds VP8 hardware decoding[22] and hybrid encoding[23] support.[24] HEVC decode is achieved through a combination of the fixed function video decoder and shaders.[25] Also, it has two independent bit stream decoder (BSD) rings to process video commands on GT3 GPUs; this allows one BSD ring to process decoding and the other BSD ring to process encoding at the same time.[26]

Broadwell's integrated GPU supports on Windows Direct3D 11.2, OpenGL 4.4 (OpenGL 4.5 on Linux[27]) and OpenCL 2.0.[28][29][30] However, it is marketed as Direct3D-12-ready.[31] Broadwell-E introduced Intel Turbo Boost Max Technology 3.0.[32]

List of Broadwell processors

[edit]

Desktop processors

[edit]
Processor branding
and model 		Cores
(threads) 		GPU model CPU frequency TDP Graphics clock rate L3 cache L4 cache[a] Release
date 		Price
(USD) 		Socket
Base Turbo Base Max
Core i7 5775C 4 (8) Iris Pro 6200 3.3 GHz 3.7 GHz 65 W 300 MHz 1.15 GHz 6 MB 128 MB June 2, 2015 (2015-06-02)[33] $366 LGA
1150
Core i5 5675C 4 (4) 3.1 GHz 3.6 GHz 1.1 GHz 4 MB $276

"Broadwell-E" HEDT (14 nm)

[edit]
Model sSpec
number 		Cores Clock rate Turbo L2
cache 		L3
cache 		TDP Socket I/O bus Memory Release date Part
number(s) 		Release
price (USD)
Core i7-6950X
  • SR2PA
 10 3.0 GHz 3.5 GHz 10 × 256 KiB 25 MB
140 W
LGA 2011-3 4 × DDR4-2400 May 30, 2016
  • BX80671I76950X
  • BXC80671I76950X
 $1723
Core i7-6900K
  • SR2PB
 8 3.2 GHz 3.7 GHz 8 × 256 KiB 20 MB
140 W
LGA 2011-3 4 × DDR4-2400 Q2 2016
  • BX80671I76900K
  • BXC80671I76900K
 $1089
Core i7-6850K
  • SR2PC
 6 3.6 GHz 3.8 GHz 6 × 256 KiB 15 MB
140 W
LGA 2011-3 4 × DDR4-2400 Q2 2016
  • BX80671I76850K
  • BXC80671I76850K
 $617
Core i7-6800K
  • SR2PD
 6 3.4 GHz 3.6 GHz 6 × 256 KiB 15 MB
140 W
LGA 2011-3 4 × DDR4-2400 Q2 2016
  • BX80671I76800K
  • BXC80671I76800K
 $434

Embedded processors

[edit]
Processor branding
and model 		Cores
(threads) 		GPU model CPU frequency TDP Graphics clock rate L3
cache 		L4
cache[a] 		Release date Price
(USD) 		Socket
Base Turbo Base Max
Core i7 5775R 4 (8) Iris Pro 6200 3.3 GHz 3.8 GHz 65 W 300 MHz 1.15 GHz 6 MB 128 MB June 2, 2015 (2015-06-02)[33] $348 BGA
1364
Core i5 5675R 4 (4) 3.1 GHz 3.6 GHz 1.1 GHz 4 MB $265
5575R 2.8 GHz 3.3 GHz 1.05 GHz $244
Xeon E3 1284Lv4 4 (8) Iris Pro P6300 2.9 GHz 3.8 GHz 47 W 1.15 GHz 6 MB OEM
1278Lv4 2.0 GHz 3.3 GHz 800 MHz 1.0 GHz $546
1258Lv4 P5700 1.8 GHz 3.2 GHz 700 MHz — $481

Mobile processors

[edit]
Processor branding
and model 		Cores
(threads) 		GPU model Base
frequency 		Turbo frequency TDP cTDP down Graphics
clock rate 		L3
cache 		Release date Price
(USD)
Single Core Dual Core Base Max
Core i7 5950HQ 4 (8) Iris Pro 6200 2.9 GHz 3.7 GHz — 47 W — 300 MHz 1.15 GHz 6 MB June 2015 $623
5850HQ Iris Pro 6200 2.7 GHz 3.6 GHz — 47 W — 300 MHz 1.1 GHz 6 MB June 2015 $434
5750HQ Iris Pro 6200 2.5 GHz 3.4 GHz — 47 W 600 MHz / 37 W 300 MHz 1.05 GHz 6 MB June 2015 $434
5700HQ HD 5600 2.7 GHz 3.5 GHz — 47 W 600 MHz / 37 W 300 MHz 1.05 GHz 6 MB June 2015 $378
5650U 2 (4) HD 6000 2.2 GHz 3.2 GHz 3.1 GHz 15 W 600 MHz / 9.5 W 300 MHz 1 GHz 4 MB Q1 2015 $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 Q1 2015 $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 Q1 2015 $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 Q1 2015 $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 Q1 2015 $393
Core i5 5350H Iris Pro 6200 3.1 GHz 3.5 GHz — 47 W — 300 MHz 1.05 GHz 4 MB June 2015 $289
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 Q1 2015 $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 Q1 2015 $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 Q1 2015 $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 Q1 2015 $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 Q1 2015 $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[34] $281
Core i3 5157U Iris 6100 2.5 GHz — — 28 W 600 MHz / 23 W 300 MHz 1 GHz 3 MB January 2015 $315
5020U HD 5500 2.2 GHz — — 15 W 600 MHz / 10 W 300 MHz 900 MHz 3 MB March 2015 $281
5015U HD 5500 2.1 GHz — — 15 W 600 MHz / 10 W 300 MHz 850 MHz 3 MB March 2015 $275
5010U HD 5500 2.1 GHz — — 15 W 600 MHz / 10 W 300 MHz 900 MHz 3 MB January 2015 $281
5005U HD 5500 2.0 GHz — — 15 W 600 MHz / 10 W 300 MHz 850 MHz 3 MB January 2015 $275
Pentium 3825U HD Graphics 1.9 GHz — — 15 W 600 MHz / 10 W 300 MHz 850 MHz 2 MB March 2015
3805U 2 (2) HD Graphics 1.9 GHz — — 15 W 600 MHz / 10 W 100 MHz 800 MHz 2 MB Q1 2015 $161
Celeron 3755U HD Graphics 1.7 GHz — — 15 W 600 MHz / 10 W 100 MHz 800 MHz 2 MB Q1 2015 $107
3205U HD Graphics 1.5 GHz — — 15 W 600 MHz / 10 W 100 MHz 800 MHz 2 MB Q1 2015 $107

Core M Ultra Low Power Mobile Processors

[edit]
Processor
Branding & Model 		Cores
(Threads) 		GPU Model Programmable TDP[35]: 69–72  CPU Turbo Graphics Clock rate L3
Cache 		Release
Date 		Price
(USD)
SDP[36][37]: 71  cTDP down[a] Nominal TDP[b] cTDP up[c] 1-core Normal Turbo
Core M (vPro) 5Y71 2 (4)[38] HD 5300 
(GT2)[39] 		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 October 27, 2014 (2014-10-27) $281
5Y70 — — 4.5 W / 1.1 GHz — 2.6 GHz 100 MHz 850 MHz September 5, 2014 (2014-09-05)
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)
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 — — — 100 MHz September 5, 2014 (2014-09-05)
5Y10[40] 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.[35]: 71–72 
  2. This is the processor's rated frequency and TDP.[35]: 71–72 
  3. When extra cooling is available, this mode specifies a higher TDP and higher guaranteed frequency versus the nominal mode.[35]: 71–72 

Server processors

[edit]

SoC processors

[edit]
Processor branding
and model 		Cores
(threads) 		Base
frequency 		Turbo
frequency 		TDP Socket Memory L3
cache 		Release date Price
(USD)
Single core All cores Type Channel
Xeon D D-1587 16 (32) 1.7 GHz — 2.3 GHz 65 W FCBGA 1667 DDR4
up to
128 GB
w/ ECC
support 		Dual 24 MB Q1 2016 $1754
D-1577 1.3 GHz 2.1 GHz 45 W Q1 2016 $1477
D-1571 1.3 GHz 2.1 GHz Q1 2016 $1222
D-1567 12 (24) 2.1 GHz 2.7 GHz 65 W 18 MB Q1 2016 $1299
D-1559 1.5 GHz 2.1 GHz 45 W Q2 2016 $883
D-1557 1.5 GHz 2.1 GHz Q1 2016 $844
D-1553N 8 (16) 2.3 GHz 2.7 GHz 65 W 12 MB Q3 2017 $855
D-1548 2.0 GHz 2.6 GHz 45 W Q4 2015 $675
D-1543N 1.9 GHz 2.4 GHz Q3 2017 $652
D-1541 2.1 GHz 2.7 GHz Q4 2015 $581
D-1540 2.0 GHz 2.6 GHz Q1 2015 $581
D-1539 1.6 GHz 2.2 GHz 35 W Q2 2016 $590
D-1537 1.7 GHz 2.3 GHz Q4 2015 $571
D-1533N 6 (12) 2.1 GHz 2.7 GHz 45 W 9 MB Q3 2017 $470
D-1531 2.2 GHz 2.7 GHz Q4 2015 $348
D-1529 4 (8) 1.3 GHz 1.3 GHz 20 W 6 MB Q2 2016 $324
D-1528 6 (12) 1.9 GHz 2.5 GHz 35 W 9 MB Q4 2015 $389
D-1527 4 (8) 2.2 GHz 2.7 GHz 6 MB Q4 2015 $259
D-1523N 2.0 GHz 2.6 GHz 45 W Q3 2017 $256
D-1521 2.4 GHz 2.7 GHz Q4 2015 $199
D-1520 2.2 GHz 2.6 GHz Q1 2015 $199
D-1518 2.2 GHz 2.2 GHz 35 W Q4 2015 $234
D-1513N 1.6 GHz 2.2 GHz Q3 2017 $192
Pentium D D1519 1.5 GHz 2.1 GHz 25 W Q2 2016 $200
D1517 1.6 GHz 2.2 GHz Q4 2015 $194
D1509 2 (2) 1.5 GHz TBA 19 W 3 MB $156
D1508 2 (4) 2.2 GHz 2.6 GHz 25 W $129
D1507 2 (2) 1.2 GHz TBA 20 W $103

Server CPUs

[edit]
Processor
branding and model 		Cores
(threads) 		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
Xeon E3 v4 1285v4 4 (8) Iris Pro P6300 3.5 GHz 3.8 GHz 300 MHz 1.15 GHz 6 MB 95 W Q2 15 $556 / — LGA
1150 		DMI 2.0
PCIe 3.0 		DDR3 or DDR3L
1333/1600/1866
with ECC
1285Lv4 3.4 GHz 65 W $445 / —
1265Lv4 2.3 GHz 3.3 GHz 1.05 GHz 35 W $417 / —

Single/dual socket CPUs

[edit]
  • Socket: LGA 2011-3 Just like Haswell-EP, the Broadwell-EP Xeon E5 has three different die configurations. The largest die (454 mm2), and highest core count (16 - 22) SKUs still work with a two-ring configuration connected by two bridges. The second configuration supports 12 to 15 cores and is a smaller version (306mm2). These dies still have two memory controllers. The smallest 10-core die uses only one dual ring, two columns of cores, and only one memory controller.
  • Interface: PCIe 3.0
Processor
branding and model 		Cores
(threads) 		CPU clock rate L3
cache 		TDP Release
date 		Release
price 		Sockets Memory

Support

Normal Turbo
Xeon E5 v4 2699A v4 22 (44) 2.4 GHz 3.6 GHz 55 MB 145 W Q2 16 $4938 2 DDR4
1600/1866/2133/2400
with ECC


(Note: 2696 v4 and
2686 v4 additionally
supports, DDR3
1333/1600/1866
with ECC)
2699 v4 22 (44) 2.2 GHz 3.6 GHz 55 MB 145 W Q1 16 $4115
2698 v4 20 (40) 2.2 GHz 3.6 GHz 50 MB 135 W $3226
2697 v4 18 (36) 2.3 GHz 3.6 GHz 45 MB 145 W $2702
2697A v4 16 (32) 2.6 GHz 3.6 GHz 40 MB 145 W $2891
2696 v4 22 (44) 2.2 GHz 3.7 GHz 55 MB 150 W OEM
2695 v4 18 (36) 2.1 GHz 3.3 GHz 45 MB 120 W $2424
2690 v4 14 (28) 2.6 GHz 3.5 GHz 35 MB 135 W $2090
2689 v4 10 (20) 3.1 GHz 3.8 GHz 25 MB 165 W $2723
2687W v4 12 (24) 3.0 GHz 3.5 GHz 30 MB 160 W $2141
2686 v4 18 (36) 2.3 GHz 3.0 GHz 45 MB 145 W OEM
2683 v4 16 (32) 2.1 GHz 3.0 GHz 40 MB 120 W $1846
2680 v4 14 (28) 2.4 GHz 3.3 GHz 35 MB 120 W $1745
2667 v4 8 (16) 3.2 GHz 3.6 GHz 25 MB 135 W $2057
2660 v4 14 (28) 2.0 GHz 3.2 GHz 35 MB 105 W $1445
2658 v4 2.3 GHz 2.8 GHz $1832
2650 v4 12 (24) 2.2 GHz 2.9 GHz 30 MB 105 W $1166
2650L v4 14 (28) 1.7 GHz 2.5 GHz 35 MB 65 W $1329
2648L v4 1.8 GHz 2.5 GHz 75 W $1544
2643 v4 6 (12) 3.4 GHz 3.7 GHz 20 MB 135 W $1552
2640 v4 10 (20) 2.4 GHz 3.4 GHz 25 MB 90 W $939 DDR4
1600/1866/2133
with ECC
2637 v4 4 (8) 3.5 GHz 3.7 GHz 15 MB 135 W $996 DDR4
1600/1866/2133/2400
with ECC
2630 v4 10 (20) 2.2 GHz 3.1 GHz 25 MB 85 W $667 DDR4
1600/1866/2133
with ECC
2630L v4 1.8 GHz 2.9 GHz 55 W $612
2628L v4 12 (24) 1.9 GHz 2.4 GHz 30 MB 75 W $1364
2623 v4 4 (8) 2.6 GHz 3.2 GHz 10 MB 85 W $444
2620 v4 8 (16) 2.1 GHz 3.0 GHz 20 MB $417
2618L v4 10 (20) 2.2 GHz 3.2 GHz 25 MB 75 W $779
2609 v4 8 (8) 1.7 GHz 1.7 GHz 20 MB 85 W $306 DDR4
1600/1866
with ECC
2608L v4 8 (16) 1.6 GHz 1.7 GHz 50 W $363
2603 v4 6 1.7 GHz 1.7 GHz 15 MB 85 W $213
1680 v4 8 (16) 3.4 GHz 4.0 GHz 20 MB 140 W Q2 16 $1723 1 DDR4
1600/1866/2133/2400
with ECC
1660 v4 3.2 GHz 3.8 GHz $1113
1650 v4 6 (12) 3.6 GHz 4.0 GHz 15 MB $617
1630 v4 4 (8) 3.7 GHz 4.0 GHz 10 MB $406
1620 v4 3.5 GHz 3.8 GHz $294

Roadmap and history

[edit]
Main article: Tick–tock model

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;[41] however, the shipment was delayed due to low yields from Intel's 14 nm process.[42]

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 would coincide with the release of Intel's 9-series chipset, which would be required for Broadwell processors due to a change in power specifications for its LGA 1150 socket.[43][44]

On May 18, 2014, Reuters quoted Intel's CEO promising that Broadwell-based PCs would be on shelves for the holiday season, but probably not for the back-to-school shopping.[45]

Mobile CPUs were expected in Q4 2014 and high-performance quad-core CPUs in 2015. The mobile CPUs would benefit from the reduced energy consumption of the die shrink.[46][47]

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.[48]

As of July 2014, Broadwell CPUs were available to Intel's hardware partners in sample quantities.[49] Intel was expected to release 17 Broadwell U series family microprocessors at CES 2015.[50] Also, according to a leak posted on vr-zone, Broadwell-E chips would be available in 2016.[51]

On August 11, 2014, Intel unveiled formally its 14 nm manufacturing process, and indicated that mobile variants of the process would 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.[52]

With Broadwell, Intel focused mainly on laptops, miniature desktops, and all-in-one systems.[53] This left traditional desktop users with no new socketed CPU options beyond fourth-generation Haswell, which first arrived in 2013. Even though the company finally introduced two Broadwell desktop chips in the summer of 2015, it launched its high-end sixth-generation Skylake CPUs very shortly thereafter. In September 2015, Kirk Skaugen, senior vice president and general manager of Intel's Client Computing Group, admitted that skipping desktops with Broadwell was a poor decision. Between the end-of-life for Windows XP in 2014 and the lack of new desktop chips, Intel had not given desktop PC users any good reasons to upgrade in 2015.[53]

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.[54]

On October 9, 2014, the first laptop with Broadwell Intel Core M 5Y70 CPU, Lenovo Yoga 3 Pro, was launched.[55]

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.[56]

On January 5, 2015, 17 additional Broadwell laptop CPUs were launched for the Celeron, Pentium and Core i3, i5 and i7 series.[57]

On March 31, 2016, Intel officially launched 14 nm Broadwell-EP Xeon E5 V4 CPUs.[58]

On May 30, 2016, Intel officially launched 14 nm Broadwell-E Core i7 69xx/68xx processor family.

See also

[edit]

Notes

[edit]
  1. ^ a b Implemented as eDRAM and serving primarily to increase the performance of integrated GPU, while being shared with the CPU.

References

[edit]
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