AMD Radeon 400 series

AMD Radeon 400 Series
Release date 29 June 2016
Codename
  • Polaris
Architecture GCN 4th gen
Cards
Entry-level Radeon RX 460
Mid-range Radeon RX 470
Radeon RX 480
API support
Direct3D
OpenCL OpenCL 2.0
OpenGL OpenGL 4.5
Vulkan
History
Predecessor Radeon R5/R7/R9 300 series
Successor Radeon 500 series

The Radeon 400 series is a series of graphics cards made by AMD. These cards were the first to feature the Polaris GPUs, using the new 14 nm[1] FinFET manufacturing process. The Polaris family initially included two new chips in the Graphics Core Next (GCN) family (Polaris 10 and Polaris 11). Polaris implements the 4th generation of the Graphics Core Next instruction set, and shares commonalities with the previous GCN microarchitectures.

Naming

The RX prefix is used for cards that offer over 1.5 teraFLOPS of performance and 80 GB/s of memory throughput (with memory compression), and achieve at least 60 FPS at 1080p in popular games such as Dota 2 and League of Legends. Otherwise, it will be omitted. Like previous generations, the first numeral in the number refers to the generation (4 in this case) and the second numeral in the number refers to the tier of the card, of which there shall be five. Tier 4, the weakest tier in the 400 series, will lack the RX prefix and feature a 64-bit memory bus. Tiers 5 and 6 will have both RX prefixed and non-RX prefixed cards, indicating that while they will both feature a 128-bit memory bus and be targeted at 1080p gaming, the latter will fall short 1.5 teraflops of performance. Tiers 7 and 8 will each have a 256-bit memory bus and will be marketed as 1440p cards. The highest tier, tier 9, will feature a memory bus greater than 256-bit and shall be aimed at 4K gaming. Finally, the third numeral will indicate whether the card is in its first or second revision with either a 0 or 5, respectively. Therefore, for example, the RX 460 indicates that it has at least 1.5 teraflops of performance, 100 GB/s of memory throughput, has a 128-bit memory bus and will be able to achieve 60 FPS in the previously mentioned games at 1080p.[2]

New features

This series is based on the fourth generation GCN architecture. It includes new hardware schedulers,[3] a new primitive discard accelerator,[4] a new display controller,[5] and an updated UVD that can decode HEVC at 4K resolutions at 60 frames per second with 10 bits per color channel.[5] On December 8, 2016, AMD released Crimson ReLive drivers (Version 16.12.1), which make GCN-GPUs support VP9 decode acceleration up to 4K@60 Hz and twinned with support for Dolby Vision and HDR10.[6][7]

Chips

Polaris

Polaris 10 features 2304 stream processors across 36 Compute Units (CUs),[8] and supports up to 8GB of GDDR5 memory on a 256-bit memory interface. The GPU replaces the mid-range Tonga segment of the Radeon M300 line. According to AMD, their prime target with the design of Polaris was energy efficiency: Polaris 10 was initially planned to be a mid-range chip, to be featured in the RX 480, with a TDP of around 110-135W[9] compared to its predecessor R9 380's 190W TDP. Despite this, the Polaris 10 chip is anticipated to run the latest DirectX 12 games "at a resolution of 1440p with a stable 60 frames per second."[9]

Polaris 11, on the other hand, is to succeed the "Curacao" GPU which powers various low-to-mid-range cards. It features 1024 stream processors over 16 CUs, coupled with up to 4GB of GDDR5 memory on a 128 bit memory interface.[10][11] Polaris 11 has a TDP of 75W.[9][11]

Reviews

Many reviewers praised the performance of the RX 480 8GB when evaluated in light of its $239 release price. The Tech Report stated that the RX 480 is the fastest card for the $200 segment at the time of its launch.[12] HardOCP gave this card an Editor's Choice Silver award.[13] PC Perspective gave it the PC Perspective Gold Award.[14]

RX 480 reference card PCI Express power limit violations

Some reviewers discovered that the AMD Radeon RX 480 violates the PCI Express power draw specifications, which allows a maximum of 75 watts being drawn from the motherboard's PCI Express slot. Chris Angelini of Tom's Hardware noticed that in a stress test it can draw up to an average of 90 watts from the slot and 86 watts in a typical gaming load.[15] The peak usage can be up to 162 watts and 300 watts altogether with the power supply in a gaming load.[15] TechPowerUp corroborated these results by noting it can also draw up to 166 watts from the power supply, past the limit of 75 watts for a 6-pin PCI Express power connector.[16] Ryan Shrout of PC Perspective did a follow-up test after other reports and found out his review sample takes 80-84 watts from the motherboard at stock speed, and that the other PCI Express slots' 12 volt power supply pins were supplying only 11.5 volts during load on his Asus ROG Rampage V Extreme motherboard.[17] He was not concerned about the voltage droop due to the specification's 8% voltage tolerance, but did note of possible problems in systems where multiple overclocked RX 480 cards are running in quad CrossFire, or in motherboards that are not designed to withstand high currents, such as budget and older models.[17]

AMD has released a driver that reprograms the voltage regulator module to draw less power from the motherboard, allowing the power draw from the motherboard to pass the PCI Express specification.[18] While this worsens the overage on the 6-pin power connector, that violation is not much of a concern because these connectors have a greater safety margin in their power rating.[18] The amount of power drawn from on the connector is dependent a newly introduced "compatibility mode" in the driver. When on, compatibility mode reduces the total power consumption of the card, allowing both power sources to operate closer their ratings. Standard mode yields essentially unchanged performance, while compatibility mode results in performance drops within the error of benchmarks.[19] Some RX 480 cards designed by AMD's partners include an 8-pin power connector which can provide more power than the stock design.[20][21]

Chipset table

Desktop

Model
(Codename)		 Launch Architecture
(Fab)		 Transistors
Die Size		 Core config[lower-alpha 1] Clock rate Fillrate[lower-alpha 2][lower-alpha 3] Memory Processing power[lower-alpha 4]
(GFLOPS)		 TDP (Watts) Bus interface API support (version) Release Price (USD)
Core (MHz)
(Boost)		 Memory (MT/s) Texture (GT/s)
(Boost)		 Pixel (GP/s)
(Boost)		 Size (GiB) Bus type Bus width (bit) Bandwidth (GB/s) Single
(Boost)		 Double
(Boost)		 Half
(Boost)		 Direct3D (FL) OpenGL
OpenCL		 Vulkan
Radeon
R5 430[23][24]
(Oland Pro)		 June 30, 2016 GCN 1st gen
(28 nm)		 1040×106
90 mm2		 384:24:8 730
(780)		 1800
4500		 17.52
(18.72)		 5.84
(6.24)		 1
2		 DDR3
GDDR5		 128 28.8
72		 560
(599)		 37.4 560
(599)		 50 PCIe 3.0 ×8 12.0 (11_1) 4.5
1.2		 1.0 OEM
Radeon
R5 435[23][25]
(Oland)		 June 30, 2016 320:20:8 1030
(-)		 2000 20.6 8.24 2 DDR3 64 16 659 41.2 659 50 OEM
Radeon
R7 430[26][27]
(Oland Pro)		 June 30, 2016 384:24:8 730
(780)		 1800
4500		 17.52
(18.72)		 5.84
(6.24)		 1
2
4		 DDR3
GDDR5		 128 28.8
72		 560
(599)		 37.4 560
(599)		 50 OEM
Radeon
R7 435[26][28]
(Oland)		 June 30, 2016 320:20:8 920
(-)		 2000 18.4 7.36 2 DDR3 64 16 589 36.8 589 50 OEM
Radeon
R7 450[26][29]
(Cape Verde Pro)		 June 30, 2016 1500×106
123 mm2		 512:32:16 1050
(-)		 4500 33.6 16.8 2 GDDR5 128 72 1075 65.2 1075 65 PCIe 3.0 ×16 OEM
Radeon
R7 455[26][30]
(Bonaire Pro)		 June 30, 2016 GCN 2nd gen
(28 nm)		 2080×106
160 mm2		 768:48:16 1050
(-)		 6500 50.4 16.8 2 GDDR5 128 104 1613 100.8 1613 100 12.0 (12_0) 4.5
2.0		 OEM
Radeon
RX 460[31][32][33][11][34]
(Baffin)		 August 8, 2016 GCN 4th gen
(14 nm)		 3000×106
123 mm2		 896:56:16 1090
(1200)		 7000 61
(67.2)		 17.4
(19.2)		 2
4		 GDDR5 128 112 1953
(2150)		 122 1953
(2150)		 <75 PCIe 3.0 ×8
or x16		 $109 (2 GB)
$139 (4 GB)
Radeon
RX 470D[35]
(Ellesmere)		 October 21, 2016
(China Only)		 5700×106
232 mm2		 1792:112:32 926
(1206)		 7000 103.7
(135.1)		 29.6
(38.6)		 4 GDDR5 256 224 3319
(4322)		 207 3319
(4322)		 120 PCIe 3.0 ×16 CNY ¥1299
Radeon
RX 470[31][33][11]
(Ellesmere Pro)		 August 4, 2016 2048:128:32 926
(1206)		 6600 118.5
(154.4)		 29.6
(38.6)		 4
8		 GDDR5 256 211 3793
(4940)		 237 3793
(4940)		 120 $179
Radeon
RX 480[36][37][38][39]
(Ellesmere XT)		 June 29, 2016 2304:144:32 1120
(1266)		 7000
8000		 161.3
(182.3)		 35.8
(40.5)		 4
8		 GDDR5 256 224
256		 5161
(5834)		 323 5161
(5834)		 150 $199 (4 GB)
$239 (8 GB)
  1. ↑ Unified Shaders : Texture Mapping Units : Render Output Units
  2. ↑ Texture fillrate is calculated as the number of Texture Mapping Units multiplied by the base (or boost) core clock speed.
  3. ↑ Pixel fillrate is calculated as the number of Render Output Units multiplied by the base (or boost) core clock speed.
  4. ↑ Precision performance is calculated from the base (or boost) core clock speed based on a FMA operation.

Mobile

Model
(Codename)		 Launch Architecture
(Fab)		 Core config[lower-alpha 1] Clock rate Fillrate[lower-alpha 2][lower-alpha 3] Memory Processing power[lower-alpha 4] (GFLOPS) TDP (Watts)
(GPU only)		 API support (version)
Core (MHz)
(Boost)		 Memory (MHz) Texture (GT/s)
(Boost)		 Pixel (GP/s)
(Boost)		 Size (GiB) Bus type Bus width (bit) Bandwidth (GB/s) Direct3D OpenGL
OpenCL		 Vulkan
Radeon
R5 M420[40]
(Jet Pro)		 15 May 2016 GCN 1st gen
(28 nm)		 320:20:8 780
(855)		 1000 15.6
(17.1)		 6.24
(6.84)		 2 DDR3 64 16.0 499
(547)		 ~20 12 4.5
1.2		 1.0
Radeon
R5 M430[41]
(Exo Pro)		 15 May 2016 320:20:8 1030
(-)		 1000 20.6 8.2 2 DDR3 64 14.4 659.2
(659.2)		 18 12 1.0
Radeon
R7 M435[42]
(Jet Pro)		 15 May 2016 320:20:8 780
(855)		 1000 15.6
(17.1)		 6.24
(6.84)		 4 GDDR5 64 32 499
(547)		 ~20 12 1.0
Radeon
R7 M440[43]
(Meso Pro)		 15 May 2016 320:20:8 1021
(-)		 1000 20.4 8.17 4 DDR3 64 16 653
(653)		 ~20 12 1.0
Radeon
R7 M445[44]
(Meso Pro)		 14 May 2016 320:20:8 780
(920)		 1000 15.6
(18.4)		 6.24
(7.36)		 4 GDDR5 64 32 499
(589)		 ~20 12 1.0
Radeon
R7 M460[45][46]
(Meso XT)		 April 2016 384:24:8 1100
(1125)		 900 26.4
(27.0)		 8.8
(9.00)		 2 DDR3 64 14.4 844
(864)		 Unknown 12 1.0
Radeon
R7 M465[47][48]
(Litho XT)		 May 2016 384:24:8 825
(960)		 1150 19.8
(23.0)		 6.6
(7.68)		 4 GDDR5 64/128 32 634
(737)		 Unknown 12 1.0
Radeon
R7 M465X[49]
(Tropo XT)		 May 2016 512:32:16 900
(925)		 1125 28.8
(29.6)		 14.4
(14.80)		 4 GDDR5 128 72 921
(947)		 Unknown 12 1.0
Radeon
R9 M470[50]
(Strato Pro)		 May 2016 GCN 2nd gen
(28 nm)		 768:48:16 900
(1000)		 1500 43.2
(48.0)		 14.4
(16.00)		 4 GDDR5 128 96 1382
(1536)		 ~75 12 4.5
2.1		 1.0
Radeon
R9 M470X[51]
(Strato XT)		 May 2016 896:56:16 1000
(1100)		 1500 56.0
(61.6)		 16.00
(17.60)		 4 GDDR5 128 96 1792
(1971)		 ~75 12 4.5
2.0		 1.0
Radeon
RX 480M
(Baffin)		 TBA GCN 4th gen
(14 nm)		 1024:xx:xx Unknown Unknown Unknown Unknown Unknown GDDR5 128 Unknown Unknown 35 12 4.5
2.1		 1.0
Radeon
R9 M485X[52]
(Antigua XT)		 May 2016 GCN 3rd gen
(28 nm)		 2048:128:32 723
(-)		 1250 92.5 23.14 8 GDDR5 256 160 2961 ~100 12 4.5
2.0		 1.0
  1. ↑ Unified Shaders : Texture Mapping Units : Render Output Units
  2. ↑ Texture fillrate is calculated as the number of Texture Mapping Units multiplied by the base (or boost) core clock speed.
  3. ↑ Pixel fillrate is calculated as the number of Render Output Units multiplied by the base (or boost) core clock speed.
  4. ↑ Precision performance is calculated from the base (or boost) core clock speed based on a FMA operation.

See also

References

  1. ↑ Moammer, Khalid (7 November 2015). "AMD Confirms 14nm CPUs, GPUs and APUs For 2016 – Working Samples Delivered by Globalfoundries". WCCFtech.com. Retrieved 8 November 2015.
  2. ↑ WhyCry (June 30, 2016). "AMD Radeon RX 400 series naming scheme explained". Videocardz.com. Retrieved June 30, 2016.
  3. ↑ Shrout, Ryan (June 29, 2016). "The AMD Radeon RX 480 Review - The Polaris Promise". PC Perspective. p. 2. Retrieved August 12, 2016.
  4. ↑ Angelini, Chris (June 29, 2016). "AMD Radeon RX 480 8GB Review". Tom's Hardware. p. 1. Retrieved August 11, 2016.
  5. 1 2 Angelini, Chris (June 29, 2016). "AMD Radeon RX 480 8GB Review". Tom's Hardware. p. 2. Retrieved August 11, 2016.
  6. ↑ AMD. "Radeon Software Crimson ReLive Edition 16.12.1 Release Notes". amd.com. amd.com. Retrieved 2016-12-29.
  7. ↑ Jon Martindale. "AMD Crimson ReLive drivers should improve all GCN cards 8th Dec". kitguru.net. kitguru.net. Retrieved 2017-01-29.
  8. ↑ Bayer, Thilo (4 July 2016). "Polaris 10: "There's nothing hidden on that product to unlock" - interview". PC Games Hardware. Retrieved 13 July 2016.
  9. 1 2 3 Anwar, Gohar (15 April 2016). "AMD Polaris 10 & Polaris 11 TDP Info Leaked, "Baffin" is Incredibly Power Efficient with Just 50W TDP". TechFrag. Hizzmedia. Retrieved 1 May 2016.
  10. ↑ Anwar, Gohar (30 April 2016). "AMD Polaris 10 and Polaris 11 OpenGL Benchmarks Leaked, Polaris 11 having Two SKUs". TechFrag. Hizzmedia. Retrieved 1 May 2016.
  11. 1 2 3 4 Angelini, Chris (8 August 2016). "AMD Radeon RX 460 Review". Tom's Hardware. Retrieved 8 August 2016.
  12. ↑ Kampman, Jeff; Wild, Robert (June 29, 2016). "AMD's Radeon RX 480 graphics card reviewed". The Tech Report. Retrieved June 29, 2016.
  13. ↑ Justice, Brent (June 29, 2016). Bennett, Kyle, ed. "AMD Radeon RX 480 Video Card Review". HardOCP. Retrieved June 29, 2016.
  14. ↑ Shrout, Ryan (June 29, 2016). "The AMD Radeon RX 480 Review - The Polaris Promise". PC Perspective. Retrieved June 29, 2016.
  15. 1 2 Angelini, Chris (June 29, 2016). "AMD Radeon RX 480 8GB Review". Tom's Hardware. Retrieved June 29, 2016.
  16. ↑ W1zzard (June 29, 2016). "AMD Radeon RX 480 8 GB". TechPowerUp. Retrieved June 29, 2016.
  17. 1 2 Shrout, Ryan (June 30, 2016). "Power Consumption Concerns on the Radeon RX 480". PC Perspective. Retrieved June 30, 2016.
  18. 1 2 Shrout, Ryan (July 7, 2016). "AMD Radeon RX 480 Power Consumption Concerns Fixed with 16.7.1 Driver". PC Perspective. Retrieved July 7, 2016.
  19. ↑ Smith, Ryan (7 July 2016). "AMD Posts Radeon 16.7.1 Drivers, Fixes RX 480 Power Consumption Issues". Anandtech.com. Retrieved 8 July 2016.
  20. ↑ Williams, Daniel (26 July 2016). "MSI Show New Radeon RX 480 Gaming Cards". AnandTech. Retrieved 28 July 2016.
  21. ↑ Chacos, Brad (22 July 2016). "Sapphire Nitro+ RX 480 review: Polaris rethought and refined". PC World. Retrieved 28 July 2016.
  22. ↑ "Radeon™ RX 480 Graphics Card". AMD. Retrieved 19 August 2016.
  23. 1 2 "Radeon™ R5 Series Graphics Cards | OEM | AMD". www.amd.com. Retrieved 2017-04-18.
  24. ↑ https://www.techpowerup.com/gpudb/2893/radeon-r5-430-oem
  25. ↑ https://www.techpowerup.com/gpudb/2894/radeon-r5-435-oem
  26. 1 2 3 4 "Radeon™ R7 Series Graphics Cards | OEM | AMD". www.amd.com. Retrieved 2017-04-18.
  27. ↑ https://www.techpowerup.com/gpudb/2892/radeon-r7-430-oem
  28. ↑ https://www.techpowerup.com/gpudb/2891/radeon-r7-435-oem
  29. ↑ https://www.techpowerup.com/gpudb/2890/radeon-r7-450-oem
  30. ↑ https://www.techpowerup.com/gpudb/2889/radeon-r7-455-oem
  31. 1 2 Sexton, Michael (13 June 2016). "AMD Rounds Out Polaris Offerings With RX 470, RX 460 GPUs". Tom's Hardware. Purch Group. Retrieved 13 June 2016.
  32. ↑ Smith, Ryan (15 June 2016). "A bit more on AMDs Polaris GPUs: 36 16 CUs". AnandTech. Purch Group. Retrieved 15 June 2016.
  33. 1 2 Smith, Ryan (28 July 2016). "AMD Announces RX 470 & RX 460 Specifications; Shipping in Early August". Anandtech. Retrieved 29 July 2016.
  34. ↑ Justice, Brent (8 August 2016). "AMD Radeon RX 460 Official Specification Information". Hard OCP. Retrieved 8 August 2016.
  35. ↑ https://www.techpowerup.com/gpudb/2896/radeon-rx-470d
  36. ↑ "Radeon RX 480 Set to Drive Premium VR Experiences into the Hands of Millions of Consumers; Starting at Just $199" (Press release). Taipei, Taiwan. AMD Communications. 1 June 2016. Retrieved 1 June 2016.
  37. ↑ Smith, Ryan (1 June 2016). "AMD Teases Radeon RX 480: Launching June 29th for 199". Anandtech.com. Retrieved 1 June 2016.
  38. ↑ Smith, Ryan (29 June 2016). "The AMD Radeon RX 480 Preview". Anandtech. Retrieved 29 June 2016.
  39. ↑ "Radeon RX 480 Graphics Card". AMD. 29 June 2016. Retrieved 29 June 2016.
  40. ↑ https://www.techpowerup.com/gpudb/2859/radeon-r5-m420
  41. ↑ https://www.techpowerup.com/gpudb/2846/radeon-r5-m430
  42. ↑ https://www.techpowerup.com/gpudb/2850/radeon-r5-m435
  43. ↑ https://www.techpowerup.com/gpudb/2851/radeon-r7-m440
  44. ↑ https://www.techpowerup.com/gpudb/2852/radeon-r7-m445
  45. ↑ http://news.lenovo.com/news-releases/lenovo-launches-new-travel-ready-windows-10-tablet-and-yoga-laptops.htm
  46. ↑ https://www.techpowerup.com/gpudb/2853/radeon-r7-m460
  47. ↑ https://www.techpowerup.com/gpudb/2854/radeon-r7-m465
  48. ↑ http://www.amd.com/en-us/products/graphics/notebook/r7-m200
  49. ↑ https://www.techpowerup.com/gpudb/2855/radeon-r7-m465x
  50. ↑ https://www.techpowerup.com/gpudb/2856/radeon-r9-m470
  51. ↑ https://www.techpowerup.com/gpudb/2857/radeon-r9-m470x
  52. ↑ https://www.techpowerup.com/gpudb/2858/radeon-r9-m485x
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