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 for its AMD APUs, aimed at a 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 Bristol Ridge Raven Ridge Desna, Ontario, Zacate Kabini, Temash Beema, Mullins Carrizo-L Stoney Ridge
Platform Desktop, Mobile Mobile Desktop, Mobile Ultra-mobile
Released Aug 2011 Oct 2012 Jun 2013 Jan 2014 Jun 2015 Jun 2016 May 2017 Jan 2011 May 2013 Q2 2014 May 2015 June 2016
Fab. (nm) GlobalFoundries 32 SOI 28 14 TSMC 40 28
Die size (mm2) 228 246 245 244.62 250.04 TBA 75 (+ 28 FCH) ~107 TBA 125
Socket FM1, FS1 FM2, FS1+, FP2 FM2+, FP3 FM2+, FP4 FP4 AM4, FP5 FT1 AM1, FT3 FT3b FP4 FP4
CPU architecture AMD 10h Piledriver Steamroller Excavator Zen Bobcat Jaguar Puma Puma+[7] Excavator
Memory support DDR3-1866
DDR3-1600
DDR3-1333
DDR3-2133
DDR3-1866
DDR3-1600
DDR3-1333
DDR4-2400
DDR4-2133
DDR4-1866
DDR4-1600
DDR3L-1333
DDR3L-1066
DDR3L-1866
DDR3L-1600
DDR3L-1333
DDR3L-1066
DDR3L-1866
DDR3L-1600
DDR3L-1333
Up to
DDR4-2133
3D engine[a] TeraScale (VLIW5) TeraScale (VLIW4) GCN 2nd Gen (Mantle, HSA) GCN 3rd Gen (Mantle, HSA) GCN 4th Gen[8] (Mantle, HSA) TeraScale (VLIW5) GCN 2nd Gen GCN 3rd Gen[9]
Up to 400:20:8 Up to 384:24:6 Up to 512:32:8 Up to 768:48:12 80:8:4 128:8:4 Up to 192:?:?
IOMMUv1 IOMMUv2 IOMMUv1[10] TBA TBA
Unified Video Decoder UVD 3 UVD 4.2 UVD 6 TBA UVD 3 UVD 4 UVD 4.2 UVD 6 UVD 6.3
Video Coding Engine N/A VCE 1.0 VCE 2.0 VCE 3.1 TBA N/A VCE 2.0 VCE 3.1
GPU power saving PowerPlay PowerTune N/A PowerTune[11]
Max. displays[b] 2–3 2–4 2–4 3 4 TBA 2 TBA TBA
TrueAudio N/A [13] N/A[10] TBA
FreeSync N/A N/A TBA
/drm/radeon[14][15] N/A N/A
/drm/amd/amdgpu[16] N/A Experimental N/A Experimental
  1. ^ Unified shaders : texture mapping units : render output units
  2. ^ To feed more than two displays, the additional panels must have native DisplayPort support.[12] Alternatively active DisplayPort-to-DVI/HDMI/VGA adapters can be employed.

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][17][18]

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[19]
E-Series E1-1200 1400 2 18 2*512 80 500 11 UVD 3 1066
E-Series E1-1500[20] 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[20] 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[21] 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. ^ "AMD VEGA10 and VEGA11 GPUs spotted in OpenCL driver". VideoCardz.com. Retrieved 3 September 2016. 
  9. ^ "AMD VEGA10 and VEGA11 GPUs spotted in OpenCL driver". VideoCardz.com. Retrieved 3 September 2016. 
  10. ^ a b Thomas De Maesschalck (2013-11-14). "AMD teases Mullins and Beema tablet/convertibles APU". Retrieved 2015-02-24. 
  11. ^ Tony Chen, Jason Greaves, "AMD's Graphics Core Next (GCN) Architecture" (PDF), AMD, retrieved 2016-08-13 
  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. ^ "A technical look at AMD's Kaveri architecture". Semi Accurate. Retrieved 6 July 2014. 
  14. ^ Airlie, David (2009-11-26). "DisplayPort supported by KMS driver mainlined into Linux kernel 2.6.33". Retrieved 2016-01-16. 
  15. ^ "Radeon feature matrix". freedesktop.org. Retrieved 2016-01-10. 
  16. ^ Deucher, Alexander (2015-09-16). "XDC2015: AMDGPU" (PDF). Retrieved 2016-01-16. 
  17. ^ AMD Accelerated Processors for Mainstream Notebooks, AMD, 2012-01-17, retrieved 2012-01-27 
  18. ^ All-In-One Desktops With AMD Accelerated Processors, AMD, retrieved 2012-07-02 
  19. ^ The Brazos Update: AMD's E-450, Anandtech.com, 2011-06-01, retrieved 2012-01-27 
  20. ^ a b http://www.amd.com/us/products/notebook/pages/consumer-notebooks.aspx#7
  21. ^ http://www.amd.com/us/products/notebook/tablets/Pages/tablets.aspx#3

External links[edit]