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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

6%
GeForce 210
8%
GeForce 9400 GT
10%
Radeon HD 4550
12%
Radeon HD 5450
15%
Radeon HD 6450
15%
GeForce GT 520
19%
GeForce GT 220
25%
GeForce GT 430
25%
Radeon HD 5570
28%
Radeon HD 4670
29%
GeForce GT 440
30%
GeForce GT 240
34%
GeForce 9600 GT
36%
Radeon HD 5670
39%
GeForce GT 640
40%
GeForce 9800 GT
42%
Radeon HD 6670
43%
Radeon HD 4830
46%
Radeon HD 4770
49%
Radeon HD 4850
50%
GeForce GTS 250
51%
GeForce GTS 450
53%
Radeon HD 5750
60%
Radeon HD 7750
61%
Radeon HD 5770
62%
GeForce GTX 260
63%
Radeon HD 4870
63%
Radeon Vega 8
63%
GeForce GTX 550 Ti
64%
GeForce GTX 650
68%
Radeon HD 5830
71%
Radeon HD 6790
72%
Radeon HD 4890
75%
GeForce GTX 460
76%
Radeon RX Vega 11
76%
GeForce GT 1030
77%
GeForce GTX 275
77%
Radeon HD 7770 GHz Edition
78%
GeForce GTX 280
79%
GeForce GTX 465
83%
Radeon HD 6850
84%
GeForce GTX 285
91%
Radeon HD 5850
92%
GeForce GTX 650 Ti
92%
Radeon HD 7790
96%
Radeon RX 550
96%
GeForce GTX 470
100%
Radeon HD 6870
100%
Radeon Pro 555X
107%
Radeon HD 5870
110%
GeForce GTX 560 Ti
110%
Radeon HD 4870 X2
112%
GeForce GTX 750 Ti
113%
Radeon HD 6950
117%
GeForce GTX 295
118%
GeForce GTX 650 Ti Boost
119%
Radeon HD 7850
121%
GeForce GTX 480
127%
Radeon HD 6970
129%
Radeon R7 265
131%
Radeon R7 370
132%
Radeon RX 560
132%
GeForce GTX 660
132%
GeForce GTX 570
143%
GeForce GTX 950
144%
Radeon HD 7870 GHz Edition
148%
Radeon R9 270X
149%
GeForce GTX 660 Ti
150%
GeForce GTX 580
151%
GeForce GTX 1050
152%
Radeon HD 7950
154%
Radeon RX 460
155%
Radeon HD 5970
159%
GeForce GTX 760
171%
GeForce GTX 670
176%
GeForce GTX 960
180%
Radeon R9 380
181%
Radeon R9 285
183%
Radeon HD 7970
185%
GeForce GTX 680
189%
GeForce GTX 1050 Ti
194%
GeForce GTX 770
199%
Radeon HD 6990
203%
Radeon R9 280X
206%
GeForce GTX 590
206%
Radeon HD 7970 GHz Edition
229%
GeForce GTX 780
252%
Radeon RX 470
255%
Radeon R9 290
272%
Radeon R9 390
274%
Radeon R9 290X
277%
GeForce GTX 970
281%
GeForce GTX TITAN
283%
Radeon RX 570
285%
GeForce GTX 780 Ti
289%
Radeon R9 390X
290%
Radeon HD 7990
291%
Radeon RX 480
294%
GeForce GTX 690
310%
Radeon RX 580
316%
GeForce GTX 980
320%
GeForce GTX 1060 6 GB
320%
Radeon R9 FURY
322%
Radeon RX 590
352%
Radeon R9 295X2
358%
Radeon R9 FURY X
364%
GeForce GTX 980 Ti
392%
GeForce GTX TITAN X
411%
GeForce GTX 1660 Ti
413%
GeForce GTX 1070
431%
Radeon RX Vega 56
468%
GeForce GTX 1070 Ti
480%
Radeon RX Vega 64
480%
GeForce RTX 2060
492%
GeForce GTX 1080
565%
Radeon VII
565%
GeForce RTX 2070
592%
TITAN X Pascal
607%
GeForce GTX 1080 Ti
656%
GeForce RTX 2080
759%
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
1.1.101
Shader Model
6.0

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