Radeon RX 400 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[10] FinFET manufacturing process, developed by Samsung Electronics and licensed to GlobalFoundries. 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.

AMD Radeon RX 400 series

Release date	June 29, 2016 (June 29, 2016)
Codename	Polaris
Architecture	GCN 4th gen
Fabrication process	Samsung/GloFo 14 nm (FinFET) Some in 28 nm (CMOS)
Cards
Entry-level	Radeon RX 460
Mid-range	Radeon RX 470 Radeon RX 480
API support
Direct3D	Direct3D 12.0 (feature level 12_0) [1] Shader Model 6.0
OpenCL	OpenCL 2.0 [1]
OpenGL	OpenGL 4.5 (4.6 Windows 7+ and Adrenalin 18.4.1+)[2][3][4][5][6]
Vulkan	Vulkan 1.1 [7][8][9] SPIR-V
History
Predecessor	Radeon R5/R7/R9 300 series
Successor	Radeon RX 500 series

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.[11]

OpenCL (API)

OpenCL accelerates many scientific Software Packages against CPU up to factor 10 or 100 and more. Open CL 1.0 to 1.2 are supported for all Chips with Terascale and GCN Architecture. OpenCL 2.0 is supported with GCN 2nd Gen. or 1.2 and higher) [12] For OpenCL 2.1 and 2.2 only Driver Updates are necessary with OpenCL 2.0 conformant Cards.

Vulkan (API)

API Vulkan 1.0 is supported for all with GCN Architecture. Vulkan 1.1 (GCN 2nd Gen. or 1.2 and higher) will be supported with actual drivers in 2018.[12] On newer drivers Vulkan 1.1 on Windows and Linux is supported on all GCN-architecture based GPUs. Vulkan 1.2 is available with Adrenalin 20.1 and Linux Mesa 20.0 for GCN 2nd Gen. or higher.

New features

This series is based on the fourth generation GCN architecture. It includes new hardware schedulers,[13] a new primitive discard accelerator,[14] a new display controller,[15] and an updated UVD that can decode HEVC at 4K resolutions at 60 frames per second with 10 bits per color channel.[15] 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.[16][17]

Chips

Polaris

Polaris 10 features 2304 stream processors across 36 Compute Units (CUs),[18] 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[19] 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."[19]

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.[20][21] Polaris 11 has a TDP of 75W.[19][21]

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.[22] HardOCP gave this card an Editor's Choice Silver award.[23] PC Perspective gave it the PC Perspective Gold Award.[24]

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.[25] The peak usage can be up to 162 watts and 300 watts altogether with the power supply in a gaming load.[25] 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.[26] 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.[27] 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.[27]

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.[28] 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.[28] 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 to their ratings. Standard mode yields essentially unchanged performance, while compatibility mode results in performance drops within the error of benchmarks.[29] Some RX 480 cards designed by AMD's partners include an 8-pin power connector which can provide more power than the stock design.[30][31]

Chipset table

Main articles: List of AMD graphics processing units, List of AMD Accelerated Processing Unit microprocessors, and Graphics Core Next

• Supported display standards are: DisplayPort 1.4 HBR, HDMI 2.0b, HDR10 color [32]
• Dual-Link DVI-D and DVI-I at resolutions up to 4096×2304 are also supported, despite ports not being present on the reference cards.

Desktop

Model (Codename)	Release Date & Price	Architecture & Fab	Transistors & Die Size	Core		Fillrate[lower-alpha 1][lower-alpha 2][lower-alpha 3]		Processing power[lower-alpha 1][lower-alpha 4] (GFLOPS)		Memory				TBP	Bus interface
				Config[lower-alpha 5]	Clock[lower-alpha 1] (MHz)	Texture (GT/s)	Pixel (GP/s)	Single	Double	Bus type & width	Size (GiB)	Clock (MT/s)	Band- width (GB/s)
Radeon R5 430 (Oland Pro) [33][34]	June 2016 OEM	GCN 1^st gen 28 nm	1040×10^6 90 mm^2	384:24:8 6 CU	730 780	17.52 18.72	5.84 6.24	560 599	37.4 40	DDR3 GDDR5 128-bit	1 2	1800 4500	28.8 72	50 W	PCIe 3.0 ×8
Radeon R5 435 (Oland) [33][35]	June 2016 OEM			320:20:8 5 CU	1030	20.6	8.24	659	41.2	DDR3 64-bit	2	2000	16	50 W
Radeon R7 430 (Oland Pro) [36][37]	June 2016 OEM			384:24:8 6 CU	730 780	17.52 18.72	5.84 6.24	560 599	37.4 40	DDR3 GDDR5 128-bit	1 2 4	1800 4500	28.8 72	50 W
Radeon R7 435 (Oland) [36][38]	June 2016 OEM			320:20:8 5 CU	920	18.4	7.36	589	36.8	DDR3 64-bit	2	2000	16	50 W
Radeon R7 450 (Cape Verde Pro) [36][39]	June 2016 OEM		1500×10^6 123 mm^2	512:32:16 8 CU	1050	33.6	16.8	1075	65.2	GDDR5 128-bit	2	4500	72	65 W	PCIe 3.0 ×16
Radeon RX 455 (Bonaire Pro) [36][40]	June 2016 OEM	GCN 2^nd gen 28 nm	2080×10^6 160 mm^2	768:48:16 12 CU	1050	50.4	16.8	1613	100.8	GDDR5 128-bit	2	6500	104	100 W
Radeon RX 460 (Baffin) [41][42][43][21][44]	August 2016 $109 USD(2 GB) $139 USD(4 GB)	GCN 4^th gen Samsung/GloFo 14LPP[45][lower-alpha 6]	3000×10^6 123 mm^2	896:56:16 14 CU	1090 1200	61 67.2	17.4 19.2	1953 2150	122 132	GDDR5 128-bit	2 4	7000	112	<75 W	PCIe 3.0 x8
Radeon RX 470D (Ellesmere) [47]	October 2016 CNY ¥1299 (China Only)		5700×10^6 232 mm^2	1792:112:32 28 CU	926 1206	103.7 135.1	29.6 38.6	3319 4322	207 270	GDDR5 256-bit	4	7000	224	120 W	PCIe 3.0 ×16
Radeon RX 470 (Ellesmere Pro) [41][43][21]	August 2016 $179 USD			2048:128:32 32 CU	926 1206	118.5 154.4	29.6 38.6	3793 4940	237 309	GDDR5 256-bit	4 8	6600	211	120 W
Radeon RX 480 (Ellesmere XT) [48][49][50][51]	June 2016 $199 USD (4 GB) $239 USD (8 GB)			2304:144:32 36 CU	1120 1266	161.3 182.3	35.8 40.5	5161 5834	323 365	GDDR5 256-bit	4 8	7000 8000	224 256	150 W

1. Boost values (if available) are stated below the base value in italic.
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.
5. Unified Shaders : Texture Mapping Units : Render Output Units and Compute Units (CU)
6. GlobalFoundries' 14 nm 14LPP FinFET process is second-sourced from Samsung Electronics.[46]

Mobile

Model (Codename)	Launch	Architecture (Fab)	Core		Fillrate[lower-alpha 1][lower-alpha 2][lower-alpha 3]		Processing power[lower-alpha 1][lower-alpha 4] (GFLOPS)	Memory				TDP
			Config[lower-alpha 5]	Clock[lower-alpha 1] (MHz)	Texture (GT/s)	Pixel (GP/s)		Bus type & width	Size (GiB)	Clock (MHz)	Band- width (GB/s)
Radeon R5 M420[52] (Jet Pro)	15 May 2016	GCN 1^st gen (28 nm)	320:20:8	780 855	15.6 17.1	6.24 6.84	499 547	DDR3 64-bit	2	1000	16.0	~20 W
Radeon R5 M430[53] (Exo Pro)	15 May 2016		320:20:8	1030 ?	20.6	8.2	659.2 659.2	DDR3 64-bit	2	1000	14.4	18 W
Radeon R7 M435[54] (Jet Pro)	15 May 2016		320:20:8	780 855	15.6 17.1	6.24 6.84	499 547	GDDR5 64-bit	4	1000	32	~20 W
Radeon R7 M440[55] (Meso Pro)	15 May 2016		320:20:8	1021 ?	20.4	8.17	653 653	DDR3 64-bit	4	1000	16	~20 W
Radeon R7 M445[56] (Meso Pro)	14 May 2016		320:20:8	780 920	15.6 18.4	6.24 7.36	499 589	GDDR5 64-bit	4	1000	32	~20 W
Radeon R7 M460[57][58] (Meso XT)	April 2016		384:24:8	1100 1125	26.4 27.0	8.8 9.00	844 864	DDR3 64-bit	2	900	14.4	Unknown
Radeon RX 460[59] (Baffin)	August 2016	GCN 4^th gen (14 nm)	896:56:16	Unknown	Unknown	Unknown	Unknown	GDDR5 128-bit	2	1750	112	35 W?
Radeon R7 M465[60][61] (Litho XT)	May 2016	GCN 1^st gen (28 nm)	384:24:8	825 960	19.8 23.0	6.6 7.68	634 737	GDDR5 128-bit	4	1150	32	Unknown
Radeon R7 M465X[62] (Tropo XT)	May 2016		512:32:16	900 925	28.8 29.6	14.4 14.80	921 947	GDDR5 128-bit	4	1125	72	Unknown
Radeon R9 M470[63] (Strato Pro)	May 2016	GCN 2^nd gen (28 nm)	768:48:16	900 1000	43.2 48.0	14.4 16.00	1382 1536	GDDR5 128-bit	4	1500	96	~75 W
Radeon R9 M470X[64] (Strato XT)	May 2016		896:56:16	1000 1100	56.0 61.6	16.00 17.60	1792 1971	GDDR5 128-bit	4	1500	96	~75 W
Radeon RX 470[65] (Ellesmere Pro)	August 2016	GCN 4^th gen (14 nm)	2048:128:32	Unknown	Unknown	Unknown	Unknown	GDDR5 256-bit	4	1650	211	85 W?
Radeon RX 480M (Baffin)	TBA		1024:xx:xx	Unknown	Unknown	Unknown	Unknown	GDDR5 128-bit	Unknown	Unknown	Unknown	35 W
Radeon R9 M485X[66] (Antigua XT)	May 2016	GCN 3^rd gen (28 nm)	2048:128:32	723	92.5	23.14	2961	GDDR5 256-bit	8	1250	160	~100 W

1. Boost values (if available) are stated below the base value in italic.
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.
5. Unified Shaders : Texture Mapping Units : Render Output Units

Radeon Feature Matrix

The following table shows features of AMD's GPUs (see also: List of AMD graphics processing units).

Name of GPU series	Wonder	Mach	3D Rage	Rage Pro	Rage	R100	R200	R300	R400	R500	R600	RV670	R700	Evergreen	Northern Islands	Southern Islands	Sea Islands	Volcanic Islands	Arctic Islands/Polaris	Vega	Navi
Released	1986	1991	1996	1997	1998	Apr 2000	Aug 2001	Sep 2002	May 2004	Oct 2005	May 2007	Nov 2007	Jun 2008	Sep 2009	Oct 2010	Jan 2012	Sep 2013	Jun 2015	Jun 2016	Jun 2017	Jul 2019
Marketing Name	Wonder	Mach	3D Rage	Rage Pro	Rage	Radeon 7000	Radeon 8000	Radeon 9000	Radeon X700/X800	Radeon X1000	Radeon HD 1000/2000	Radeon HD 3000	Radeon HD 4000	Radeon HD 5000	Radeon HD 6000	Radeon HD 7000	Radeon Rx 200	Radeon Rx 300	Radeon RX 400/500	Radeon RX Vega/Radeon VII(7nm)	Radeon RX 5000
AMD support
Kind	2D		3D
Instruction set	Not publicly known										TeraScale instruction set					GCN instruction set					RDNA instruction set
Microarchitecture											TeraScale 1			TeraScale 2 (VLIW5)	TeraScale 3 (VLIW4)	GCN 1st gen	GCN 2nd gen	GCN 3rd gen	GCN 4th gen	GCN 5th gen	RDNA
Type	Fixed pipeline[lower-alpha 1]						Programmable pixel & vertex pipelines				Unified shader model
Direct3D	N/A		5.0	6.0		7.0	8.1	9.0 11 (9_2)	9.0b 11 (9_2)	9.0c 11 (9_3)	10.0 11 (10_0)	10.1 11 (10_1)		11 (11_0)		11 (11_1) 12 (11_1)	11 (12_0) 12 (12_0)			11 (12_1) 12 (12_1)
Shader model	N/A						1.4	2.0+	2.0b	3.0	4.0	4.1		5.0		5.1	5.1 6.3			6.4
OpenGL	N/A			1.1	1.2	1.3		2.0[lower-alpha 2]			3.3			4.5 (on Linux + Mesa 3D: 4.2 with FP64 HW support, 3.3 without)[67][4][5][lower-alpha 3]		4.6 (on Linux: 4.6 (Mesa 20.0))
Vulkan	N/A															1.0 (Win 7+ or Mesa 17+)	1.2 (Adrenalin 20.1, Linux Mesa 20.0)
OpenCL	N/A										Close to Metal		1.1	1.2			2.0 (Adrenalin driver on Win7+) (1.2 on Linux, 2.1 with AMD ROCm)				?
HSA	N/A																				?
Video decoding ASIC	N/A										Avivo/UVD	UVD+	UVD 2	UVD 2.2	UVD 3	UVD 4	UVD 4.2	UVD 5.0 or 6.0	UVD 6.3	UVD 7[68][lower-alpha 4]	VCN 2.0[68][lower-alpha 4]
Video encoding ASIC	N/A															VCE 1.0	VCE 2.0	VCE 3.0 or 3.1	VCE 3.4	VCE 4.0[68][lower-alpha 4]
Power saving	?										PowerPlay				PowerTune	PowerTune & ZeroCore Power					?
TrueAudio	N/A																Via dedicated DSP		Via shaders
FreeSync	N/A																1 2
HDCP[lower-alpha 5]	?																1.4		1.4 2.2		1.4 2.2 2.3
PlayReady[lower-alpha 5]	N/A																		3.0		3.0
Supported displays[lower-alpha 6]						1–2	2							2–6							?
Max. resolution	?													2–6 × 2560×1600		2–6 × 4096×2160 @ 60 Hz			2–6 × 5120×2880 @ 60 Hz	3 × 7680×4320 @ 60 Hz[69]	?
/drm/radeon[lower-alpha 7]																		N/A
/drm/amdgpu[lower-alpha 7]	N/A															Experimental[70]

1. The Radeon 100 Series has programmable pixel shaders, but do not fully comply with DirectX 8 or Pixel Shader 1.0. See article on R100's pixel shaders.
2. These series do not fully comply with OpenGL 2+ as the hardware does not support all types of non-power of two (NPOT) textures.
3. OpenGL 4+ compliance requires supporting FP64 shaders and these are emulated on some TeraScale chips using 32-bit hardware.
4. The UVD and VCE were replaced by the Video Core Next (VCN) ASIC in the Raven Ridge APU implementation of Vega.
5. To play protected video content, it also requires card, operating system, driver, and application support. A compatible HDCP display is also needed for this. HDCP is mandatory for the output of certain audio formats, placing additional constraints on the multimedia setup.
6. More displays may be supported with native DisplayPort connections, or splitting the maximum resolution between multiple monitors with active converters.
7. DRM (Direct Rendering Manager) is a component of the Linux kernel. Support in this table refers to the most current version.

See also

• AMD Radeon Pro
• AMD FirePro
• AMD FireMV
• AMD FireStream
• AMD Vega
• List of AMD graphics processing units

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