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AMD Radeon Pro 555X

Graphics Processor
Polaris 21
Cores
768
TMUs
48
ROPs
16
Memory Size
4 GB
Memory Type
GDDR5
Bus Width
128 bit
The Radeon Pro 555X is a professional graphics card by AMD, launched in July 2018. Built on the 14 nm process, and based on the Polaris 21 graphics processor, in its Polaris 21 PRO variant, the card supports DirectX 12.0. The Polaris 21 graphics processor is an average sized chip with a die area of 123 mm² and 3,000 million transistors. Unlike the fully unlocked Radeon RX 560X, which uses the same GPU but has all 1024 shaders enabled, AMD has disabled some shading units on the Radeon Pro 555X to reach the product's target shader count. It features 768 shading units, 48 texture mapping units and 16 ROPs. AMD has placed 4,096 MB GDDR5 memory on the card, which are connected using a 128-bit memory interface. The GPU is operating at a frequency of 907 MHz, memory is running at 1275 MHz.
Being a igp card, the AMD Radeon Pro 555X does not require any additional power connector, its power draw is rated at 75 W maximum. This device has no display connectivity, as it is not designed to have monitors connected to it. Radeon Pro 555X is connected to the rest of the system using a PCI-Express 3.0 x8 interface.

Graphics Processor

GPU Name
Polaris 21
GPU Variant
Polaris 21 PRO
Architecture
GCN 4.0
Foundry
GlobalFoundries
Process Size
14 nm
Transistors
3,000 million
Die Size
123 mm²

Graphics Card

Release Date
Jul 16th, 2018
Generation
Radeon Pro
(500X)
Production
Active
Bus Interface
PCIe 3.0 x8

Relative Performance

7%
GeForce 210
9%
GeForce 9400 GT
11%
Radeon HD 4550
15%
Radeon HD 5450
17%
Radeon HD 6450
18%
GeForce GT 520
23%
GeForce GT 220
29%
GeForce GT 430
30%
Radeon HD 5570
32%
Radeon HD 4670
34%
GeForce GT 440
35%
GeForce GT 240
40%
GeForce 9600 GT
43%
Radeon HD 5670
46%
GeForce GT 640
47%
GeForce 9800 GT
49%
Radeon HD 6670
51%
Radeon HD 4830
54%
Radeon HD 4770
57%
Radeon HD 4850
58%
GeForce GTS 250
60%
GeForce GTS 450
62%
Radeon HD 5750
71%
Radeon HD 7750
71%
Radeon HD 5770
73%
GeForce GTX 260
74%
Radeon HD 4870
74%
Radeon Vega 8
75%
GeForce GTX 550 Ti
75%
GeForce GTX 650
80%
Radeon HD 5830
84%
Radeon HD 6790
85%
Radeon HD 4890
88%
GeForce GTX 460
89%
Radeon RX Vega 11
90%
GeForce GT 1030
91%
GeForce GTX 275
91%
Radeon HD 7770 GHz Edition
91%
GeForce GTX 280
93%
GeForce GTX 465
97%
Radeon HD 6850
99%
GeForce GTX 285
100%
Radeon Pro 555X
106%
Radeon HD 5850
108%
GeForce GTX 650 Ti
108%
Radeon HD 7790
113%
Radeon RX 550
113%
GeForce GTX 470
117%
Radeon HD 6870
125%
Radeon HD 5870
129%
GeForce GTX 560 Ti
130%
Radeon HD 4870 X2
132%
GeForce GTX 750 Ti
133%
Radeon HD 6950
137%
GeForce GTX 295
139%
GeForce GTX 650 Ti Boost
140%
Radeon HD 7850
142%
GeForce GTX 480
149%
Radeon HD 6970
152%
Radeon R7 265
154%
Radeon RX 460
154%
Radeon R7 370
155%
GeForce GTX 660
155%
GeForce GTX 570
158%
Radeon RX 560
168%
GeForce GTX 950
169%
Radeon HD 7870 GHz Edition
173%
Radeon R9 270X
175%
GeForce GTX 660 Ti
176%
GeForce GTX 580
178%
GeForce GTX 1050
178%
Radeon HD 7950
182%
Radeon HD 5970
187%
GeForce GTX 760
201%
GeForce GTX 670
206%
GeForce GTX 960
211%
Radeon R9 380
213%
Radeon R9 285
215%
Radeon HD 7970
217%
GeForce GTX 680
222%
GeForce GTX 1050 Ti
228%
GeForce GTX 770
233%
Radeon HD 6990
239%
Radeon R9 280X
242%
GeForce GTX 590
242%
Radeon HD 7970 GHz Edition
268%
GeForce GTX 780
278%
GeForce GTX 1650
295%
Radeon RX 470
299%
Radeon R9 290
316%
Radeon RX 570
320%
Radeon R9 390
321%
Radeon R9 290X
326%
GeForce GTX 970
330%
GeForce GTX TITAN
334%
GeForce GTX 780 Ti
339%
Radeon R9 390X
341%
Radeon HD 7990
342%
Radeon RX 480
345%
GeForce GTX 690
364%
Radeon RX 580
371%
GeForce GTX 980
376%
Radeon R9 FURY
376%
GeForce GTX 1060 6 GB
393%
Radeon RX 590
413%
Radeon R9 295X2
416%
GeForce GTX 1660
421%
Radeon R9 FURY X
428%
GeForce GTX 980 Ti
439%
GeForce GTX TITAN X
477%
GeForce GTX 1660 Ti
477%
GeForce GTX 1070
508%
Radeon RX Vega 56
539%
GeForce GTX 1070 Ti
554%
Radeon RX Vega 64
562%
GeForce GTX 1080
562%
GeForce RTX 2060
585%
Radeon RX 5700
631%
GeForce RTX 2060 SUPER
654%
GeForce RTX 2070
670%
Radeon RX 5700 XT
678%
Radeon VII
695%
TITAN X Pascal
716%
GeForce GTX 1080 Ti
724%
GeForce RTX 2070 SUPER
770%
GeForce RTX 2080
901%
GeForce RTX 2080 Ti
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
907 MHz
Memory Clock
1275 MHz
5100 MHz effective

Memory

Memory Size
4 GB
Memory Type
GDDR5
Memory Bus
128 bit
Bandwidth
81.60 GB/s

Render Config

Shading Units
768
TMUs
48
ROPs
16
Compute Units
12
L1 Cache
16 KB (per CU)
L2 Cache
1024 KB

Theoretical Performance

Pixel Rate
14.51 GPixel/s
Texture Rate
43.54 GTexel/s
FP16 (half) performance
1,393 GFLOPS (1:1)
FP32 (float) performance
1,393 GFLOPS
FP64 (double) performance
87.07 GFLOPS (1:16)

Board Design

Slot Width
IGP
TDP
75 W
Outputs
No outputs
Power Connectors
None

Graphics Features

DirectX
12.0 (12_0)
OpenGL
4.6
OpenCL
2.0
Vulkan
1.1.108
Shader Model
6.4

Polaris 21 GPU Notes

Architecture Codename: Arctic Islands
Codename: Baffin
CLRX Version: GCN 1.2
Graphics/Compute: GFX8 (gfx803)
Display Core Engine: 11.2
Unified Video Decoder: 6.3
Video Compression Engine: 3.4