Bobcat (microarchitecture)

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Bobcat - Family 14h
Produced From early 2011 to present
Common manufacturer(s)
Min. feature size 40 nm
Instruction set AMD64 (x86-64)
Socket(s)
Successor Jaguar - Family 16h
Core name(s)

The AMD Bobcat Family 14h is a microarchitecture created by AMD aimed at low-power/low-cost market.[1]

It was revealed during a speech from AMD executive vice-president Henri Richard in Computex 2007 and was put into production Q1 2011.[2] One of the major supporters was executive vice-president Mario A. Rivas who felt it was difficult to compete in the x86 market with a single core optimized for the 10-100 Watts range and actively promoted the development of the simpler core with a target range of 1-10 Watts. In addition, it was believed that the core could migrate into the hand-held space if the power consumption can be reduced to less than 1 W.

Bobcat cores are used together with GPU cores in accelerated processing units (APUs) under the "Fusion" brand.[3][4] A simplified architecture diagram was released at AMD's Analyst Day in November 2009. This is similar in concept with earlier AMD research in 2003,[5] detailing the specifications and advantages of extending x86 "everywhere".

Design[edit]

The Bobcat x86 CPU core design has since been completed and implemented in AMD APU processor products with a TDP of 18 W or less. The core is targeted at low-power markets like netbooks/nettops, ultra-portable laptops, consumer electronics and the embedded market. Since its launch, Bobcat-based CPUs have also been used by OEMs on larger laptops. Architecture specifics:[6]

In February 2013, AMD detailed plans for a successor to Bobcat codenamed Jaguar.

Feature overview[edit]

Features of AMD Accelerated Processing Units
Brand Llano Trinity Richland Kaveri Carrizo  ?    Desna,
Ontario,
Zacate
Kabini,
Temash
Beema,
Mullins
Carrizo-L
Platform Desktop, Mobile Desktop, Mobile Mobile Desktop Ultra-mobile
Released Aug 2011 Oct 2012 Jun 2013 Jan 2014 Jun 2015 2016? Jan 2011 May 2013 Q2 2014 May 2015
Fab (nm) GlobalFoundries 32 nm SOI 28 14/16nm TSMC 40 nm 28
Die size (mm2) 228 246 245 244.62  ? 75 (+ 28 FCH) ~107 TBA
Socket FM1, FS1 FM2, FS1+, FP2 FM2+, FP3 FP4 AM4 FT1 AM1, FT3 FT3b FP4
CPU architecture AMD 10h Piledriver Steamroller Excavator Zen Bobcat Jaguar Puma Puma+[7]
Memory support DDR3-1866
DDR3-1600
DDR3-1333
DDR3-2133
DDR3-1866
DDR3-1600
DDR3-1333
 ? DDR3L-1333
DDR3L-1066
DDR3L-1866
DDR3L-1600
DDR3L-1333
DDR3L-1066
DDR3L-1866
DDR3L-1600
DDR3L-1333
3D engine1 TeraScale 2
(VLIW5)
TeraScale 3
(VLIW4)
GCN 1.1
(Mantle, HSA)
GCN 1.2  ? TeraScale 2
(VLIW5)
GCN1.1 GCN
400:20:8 up to 384:24:6 up to 512:32:8  ? 80:8:4 128:8:4 TBA
IOMMUv1 IOMMUv2 IOMMUv1 IOMMUv1[8] TBA
Unified Video Decoder UVD 3 UVD 4.2 UVD 6  ? UVD 3 UVD 4 UVD 4.2 TBA
Video Coding Engine N/A VCE 1.0 VCE 2.0 VCE 3.0  ? N/A VCE 2.0 TBA
Power saving GPU PowerPlay PowerTune  ?
Max. № of displays2 2–3 2–4 2–4 3  ? 2 2 TBA
TrueAudio N/A [9] N/A[8] TBA
FreeSync N/A ?
Direct Rendering Manager
/ Mesa 3D driver[10][11]
[11] WIP


Processors[edit]

In January 2011 AMD introduced several processors that have implemented the Bobcat core. This core is in the following AMD Accelerated Processors:[6][13][14]

Series ^ Model CPU clock
(MHz)
CPU
cores
TDP
(W)
L2 cache
(KiB)
Radeon
cores
GPU clock
(MHz)
DirectX
version
UVD DDR3 speed
C-Series C-30 1000 1 09 512 80 277 11 UVD 3 1066
C-Series C-50 1000 2 09 2*512 80 276 11 UVD 3 1066
C-Series C-60 1000/1333 (turbo) 2 09 2*512 80 276/400 (turbo) 11 UVD 3 1066
C-Series C-70 1000/1333 (turbo) 2 09 2*512 80 276/400 (turbo) 11 UVD 3 1066
E-Series E-240 1500 1 18 512 80 500 11 UVD 3 1066
E-Series E-300 1300 2 18 2*512 80 500 11 UVD 3 1066
E-Series E-350 1600 2 18 2*512 80 492 11 UVD 3 1066
E-Series E-450 1650 2 18 2*512 80 508/600 (turbo) 11 UVD 3 1333[15]
E-Series E1-1200 1400 2 18 2*512 80 500 11 UVD 3 1066
E-Series E1-1500[16] 1480 2 18 2*512 80 529 11 UVD 3 1066
E-Series E2-1800 1700 2 18 2*512 80 523/680 11 UVD 3 1333
E-Series E2-2000[16] 1750 2 18 2*512 80 538/700 11 UVD 3 1333
G-Series T-24L 0800 1 05 512 80  ?  ?  ? 1066
G-Series T-30L 1400 1 18 512 80  ?  ?  ? 1333
G-Series T-40N 1000 2 09 2*512 80 276 11 UVD 3 1066
G-Series T-44R 1200 1 09 512 80 276 11 UVD 3 1066
G-Series T-48L 1400 2 18 2*512 80  ?  ?  ? 1066
G-Series T-48N 1400 2 18 2*512 80 492 11 UVD 3 1066
G-Series T-52R 1500 1 18 512 80 492 11 UVD 3 1066
G-Series T-56N 1600 2 18 2*512 80 492 11 UVD 3 1066
Z-Series Z-01 1000 2 5.9 2*512 80 276 11 UVD 3 1066
Z-Series Z-60[17] 1000 2 4.5 2*512 80 275 11 UVD 3 1066

^ E-Series & C-Series are standard parts, G-Series are embedded parts

See also[edit]

References[edit]

  1. ^ "List of AMD CPU microarchitectures - LeonStudio". LeonStudio - CodeFun. 3 August 2014. Retrieved 12 September 2015. 
  2. ^ Hruska, Joel (July 16, 2010). "AMD Flip-Flops: Llano Later, Bobcat Bounding Forward". HotHardware. 
  3. ^ Gunning for Mobilty: Intel and AMD Bet on a Mobile Internet, Dailytech.com, 2007-06-13, retrieved 2012-01-27 
  4. ^ "Analyst Day 2009 Presentations". AMD. November 11, 2009. Retrieved 2009-11-14. 
  5. ^ AMD 2003 Microprocessor Forum Slides: Slide 11 and Slide 22
  6. ^ a b AMD Embedded G-Series Platform (PDF), AMD, retrieved 2012-01-27 
  7. ^ "AMD Mobile “Carrizo” Family of APUs Designed to Deliver Significant Leap in Performance, Energy Efficiency in 2015" (Press release). 2014-11-20. Retrieved 2015-02-16. 
  8. ^ a b Thomas De Maesschalck (2013-11-14). "AMD teases Mullins and Beema tablet/convertibles APU". Retrieved 2015-02-24. 
  9. ^ "A technical look at AMD’s Kaveri architecture". Semi Accurate. Retrieved 6 July 2014. 
  10. ^ Airlie, David (2009-11-26). "DisplayPort supported by KMS driver mainlined into Linux kernel 2.6.33". Retrieved 2014-07-02. 
  11. ^ a b "Radeon feature matrix". freedesktop.org. Retrieved 2016-01-10. 
  12. ^ "How do I connect three or More Monitors to an AMD Radeon™ HD 5000, HD 6000, and HD 7000 Series Graphics Card?". AMD. Retrieved 2014-12-08. 
  13. ^ AMD Accelerated Processors for Mainstream Notebooks, AMD, 2012-01-17, retrieved 2012-01-27 
  14. ^ All-In-One Desktops With AMD Accelerated Processors, AMD, retrieved 2012-07-02 
  15. ^ The Brazos Update: AMD's E-450, Anandtech.com, 2011-06-01, retrieved 2012-01-27 
  16. ^ a b http://www.amd.com/us/products/notebook/pages/consumer-notebooks.aspx#7
  17. ^ http://www.amd.com/us/products/notebook/tablets/Pages/tablets.aspx#3

External links[edit]