Report an Error

AMD Radeon RX 550X

Graphics Processor
Lexa
Cores
512
TMUs
32
ROPs
16
Memory Size
4 GB
Memory Type
GDDR5
Bus Width
128 bit
The Radeon RX 550X is a graphics card by AMD, launched in December 2018. Built on the 14 nm process, and based on the Lexa graphics processor, in its Lexa PRO variant, the card supports DirectX 12.0. The Lexa graphics processor is an average sized chip with a die area of 103 mm² and 2,200 million transistors. Unlike the fully unlocked Radeon 550X 640SP, which uses the same GPU but has all 640 shaders enabled, AMD has disabled some shading units on the Radeon RX 550X to reach the product's target shader count. It features 512 shading units, 32 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 1100 MHz, which can be boosted up to 1183 MHz, memory is running at 1500 MHz.
Being a dual-slot card, the AMD Radeon RX 550X does not require any additional power connector, its power draw is rated at 50 W maximum. Display outputs include: 1x DVI, 1x HDMI, 1x DisplayPort. Radeon RX 550X is connected to the rest of the system using a PCI-Express 3.0 x8 interface. The card measures 145 mm in length, and features a dual-slot cooling solution.

Graphics Processor

GPU Name
Lexa
GPU Variant
Lexa PRO
(215-0904018)
Architecture
GCN 4.0
Foundry
TSMC
Process Size
14 nm
Transistors
2,200 million
Die Size
103 mm²

Graphics Card

Release Date
Dec 16th, 2018
Generation
Polaris
(RX 500X)
Production
Active
Bus Interface
PCIe 3.0 x8

Relative Performance

6%
GeForce 210
8%
GeForce 9400 GT
10%
Radeon HD 4550
13%
Radeon HD 5450
15%
Radeon HD 6450
16%
GeForce GT 520
20%
GeForce GT 220
26%
GeForce GT 430
26%
Radeon HD 5570
29%
Radeon HD 4670
30%
GeForce GT 440
31%
GeForce GT 240
35%
GeForce 9600 GT
38%
Radeon HD 5670
40%
GeForce GT 640
42%
GeForce 9800 GT
43%
Radeon HD 6670
45%
Radeon HD 4830
48%
Radeon HD 4770
50%
Radeon HD 4850
52%
GeForce GTS 250
53%
GeForce GTS 450
55%
Radeon HD 5750
63%
Radeon HD 7750
63%
Radeon HD 5770
64%
GeForce GTX 260
65%
Radeon HD 4870
65%
Radeon Vega 8
66%
GeForce GTX 550 Ti
67%
GeForce GTX 650
70%
Radeon HD 5830
74%
Radeon HD 6790
75%
Radeon HD 4890
78%
GeForce GTX 460
79%
Radeon RX Vega 11
80%
GeForce GT 1030
80%
GeForce GTX 275
80%
Radeon HD 7770 GHz Edition
81%
GeForce GTX 280
82%
GeForce GTX 465
86%
Radeon HD 6850
88%
GeForce GTX 285
94%
Radeon HD 5850
96%
GeForce GTX 650 Ti
96%
Radeon HD 7790
100%
Radeon RX 550
100%
Radeon RX 550X
100%
GeForce GTX 470
104%
Radeon HD 6870
111%
Radeon HD 5870
114%
GeForce GTX 560 Ti
115%
Radeon HD 4870 X2
117%
GeForce GTX 750 Ti
118%
Radeon HD 6950
122%
GeForce GTX 295
123%
GeForce GTX 650 Ti Boost
124%
Radeon HD 7850
126%
GeForce GTX 480
132%
Radeon HD 6970
135%
Radeon R7 265
137%
Radeon RX 460
137%
Radeon R7 370
137%
GeForce GTX 660
138%
GeForce GTX 570
140%
Radeon RX 560
149%
GeForce GTX 950
150%
Radeon HD 7870 GHz Edition
154%
Radeon R9 270X
155%
GeForce GTX 660 Ti
156%
GeForce GTX 580
157%
GeForce GTX 1050
158%
Radeon HD 7950
161%
Radeon HD 5970
165%
GeForce GTX 760
178%
GeForce GTX 670
183%
GeForce GTX 960
187%
Radeon R9 380
188%
Radeon R9 285
190%
Radeon HD 7970
192%
GeForce GTX 680
197%
GeForce GTX 1050 Ti
202%
GeForce GTX 770
207%
Radeon HD 6990
212%
Radeon R9 280X
215%
GeForce GTX 590
215%
Radeon HD 7970 GHz Edition
238%
GeForce GTX 780
246%
GeForce GTX 1650
262%
Radeon RX 470
265%
Radeon R9 290
280%
Radeon RX 570
283%
Radeon R9 390
285%
Radeon R9 290X
288%
GeForce GTX 970
292%
GeForce GTX TITAN
296%
GeForce GTX 780 Ti
300%
Radeon R9 390X
302%
Radeon HD 7990
303%
Radeon RX 480
306%
GeForce GTX 690
322%
Radeon RX 580
329%
GeForce GTX 980
333%
Radeon R9 FURY
333%
GeForce GTX 1060 6 GB
348%
Radeon RX 590
366%
Radeon R9 295X2
368%
GeForce GTX 1660
373%
Radeon R9 FURY X
379%
GeForce GTX 980 Ti
389%
GeForce GTX TITAN X
423%
GeForce GTX 1660 Ti
423%
GeForce GTX 1070
450%
Radeon RX Vega 56
477%
GeForce GTX 1070 Ti
491%
Radeon RX Vega 64
498%
GeForce GTX 1080
498%
GeForce RTX 2060
518%
Radeon RX 5700
559%
GeForce RTX 2060 SUPER
580%
GeForce RTX 2070
593%
Radeon RX 5700 XT
600%
Radeon VII
616%
TITAN X Pascal
634%
GeForce GTX 1080 Ti
641%
GeForce RTX 2070 SUPER
682%
GeForce RTX 2080
723%
GeForce RTX 2080 SUPER
798%
GeForce RTX 2080 Ti
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

Base Clock
1100 MHz
Boost Clock
1183 MHz
Memory Clock
1500 MHz
6000 MHz effective

Memory

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

Render Config

Shading Units
512
TMUs
32
ROPs
16
Compute Units
8
L1 Cache
16 KB (per CU)
L2 Cache
512 KB

Theoretical Performance

Pixel Rate
18.93 GPixel/s
Texture Rate
37.86 GTexel/s
FP16 (half) performance
1,211 GFLOPS (1:1)
FP32 (float) performance
1,211 GFLOPS
FP64 (double) performance
75.71 GFLOPS (1:16)

Board Design

Slot Width
Dual-slot
Length
5.7 inches
145 mm
TDP
50 W
Suggested PSU
350 W
Outputs
1x DVI
1x HDMI
1x DisplayPort
Power Connectors
None
Board Number
D090

Graphics Features

DirectX
12.0 (12_0)
OpenGL
4.6
OpenCL
2.0
Vulkan
1.1.121
Shader Model
6.4

Lexa GPU Notes

Architecture Codename: Arctic Islands
Codename: Polaris 12 (Treasure)
CLRX Version: GCN 1.2
Graphics/Compute: GFX8 (gfx804)
Display Core Engine: 11.2
Unified Video Decoder: 6.3
Video Compression Engine: 3.4

Retail boards based on this design (1)

Name GPU Clock Boost Clock Memory Clock Other Changes
Dell RX 550X 1100 MHz 1183 MHz 1500 MHz