Broadwell (microarchitecture)

Not to be confused with Broadway (microprocessor).

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]

Broadwell

General information
Launched	October 27, 2014; 10 years ago (October 27, 2014)
Discontinued	November 2018[1]
Marketed by	Intel
Designed by	Intel
Common manufacturer	Intel
CPUID code	0306D4h
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 speeds	6.4 GT/s to 9.6 GT/s
DMI speeds	4 GT/s
Cache
L1 cache	64 KB per core
L2 cache	256 KB per core
L3 cache	2-6 MB (shared)
L4 cache	128 MB of eDRAM (Iris Pro models only)
Architecture and classification
Technology node	14 nm (Tri-Gate)
Microarchitecture	Haswell
Instruction set	x86-16, IA-32, x86-64
Extensions	MMX, SSE, SSE2, SSE3, SSSE3, SSE4, SSE4.1, SSE4.2, AVX, AVX2, TSX, FMA3 AES-NI, CLMUL, RDRAND, TXT VT-x, VT-d
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	LGA 1150 BGA 1364 LGA 2011-v3
Products, models, variants
Product code name	Rockwell
Brand name	Core i3 Core i5 Core i7 Core M Celeron Pentium Xeon
History
Predecessors	Haswell (tock/architecture) Haswell Refresh (optimization)
Successor	Skylake (tock/architecture)
Support status
Unsupported

Haswell and Broadwell feature a Fully Integrated Voltage Regulator.

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

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:
  • Broadwell-DT: quad-core unlocked desktop version with GT3e integrated graphics (Iris Pro 6200) and 128 MB of eDRAM L4 cache, in a 65 W TDP class. Announced to be backward compatible with the LGA 1150 motherboards designed for Haswell processors.^[13]
• 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

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

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

Desktop processors

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)

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

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

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			2.7 GHz	3.6 GHz	—		—		1.1 GHz			$434
	5750HQ			2.5 GHz	3.4 GHz	—		600 MHz / 37 W		1.05 GHz			$434
	5700HQ		HD 5600	2.7 GHz	3.5 GHz	—							$378
	5650U	2 (4)	HD 6000	2.2 GHz	3.2 GHz	3.1 GHz	15 W	600 MHz / 9.5 W		1 GHz	4 MB	Q1 2015	$426
	5600U		HD 5500	2.6 GHz				600 MHz / 7.5 W		950 MHz			$393
	5557U		Iris 6100	3.1 GHz	3.4 GHz	3.4 GHz	28 W	N/A / 23 W		1.1 GHz			$426
	5550U		HD 6000	2.0 GHz	3.0 GHz	2.9 GHz	15 W	600 MHz / 9.5 W		1 GHz			$426
	5500U		HD 5500	2.4 GHz				600 MHz / 7.5 W		950 MHz			$393
Core i5	5350H		Iris Pro 6200	3.1 GHz	3.5 GHz	—	47 W	—		1.05 GHz		June 2015	$289
	5350U		HD 6000	1.8 GHz	2.9 GHz	2.7 GHz	15 W	600 MHz / 9.5 W		1 GHz	3 MB	Q1 2015	$315
	5300U		HD 5500	2.3 GHz				600 MHz / 7.5 W		900 MHz			$281
	5287U		Iris 6100	2.9 GHz	3.3 GHz	3.3 GHz	28 W	600 MHz / 23 W		1.1 GHz			$315
	5257U			2.7 GHz	3.1 GHz	3.1 GHz				1.05 GHz			$315
	5250U		HD 6000	1.6 GHz	2.7 GHz	2.5 GHz	15 W	600 MHz / 9.5 W		950 MHz			$315
	5200U		HD 5500	2.2 GHz				600 MHz / 7.5 W		900 MHz		February 2015[34]	$281
Core i3	5157U		Iris 6100	2.5 GHz	—	—	28 W	600 MHz / 23 W		1 GHz		January 2015	$315
	5020U		HD 5500	2.2 GHz	—	—		600 MHz / 10 W		900 MHz		March 2015	$281
	5015U			2.1 GHz	—	—				850 MHz			$275
	5010U				—	—				900 MHz		January 2015	$281
	5005U			2.0 GHz	—	—				850 MHz			$275
Pentium	3825U		HD Graphics	1.9 GHz	—	—					2 MB	March 2015
	3805U	2 (2)			—	—			100 MHz	800 MHz		Q1 2015	$161
Celeron	3755U			1.7 GHz	—	—							$107
	3205U			1.5 GHz	—	—							$107

Core M Ultra Low Power Mobile Processors

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

SoC processors

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

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

• 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

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^[update], 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

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

• List of Intel CPU microarchitectures
• List of Intel Core M microprocessors

Notes

1. Implemented as eDRAM and serving primarily to increase the performance of integrated GPU, while being shared with the CPU.

References

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External links

• Intel to launch Broadwell "U" series CPUs at CES 2015