Radeon RX 580X vs RX 550

Place in performance ranking	521	258
Place by popularity	13	not in top-100
Cost-effectiveness evaluation	3.24	14.70
Architecture	GCN 4.0 (2016−2020)	GCN 4.0 (2016−2020)
GPU code name	Lexa	Polaris 20
Market segment	Desktop	Desktop
Release date	20 April 2017 (7 years ago)	11 April 2018 (6 years ago)
Launch price (MSRP)	$79	no data
Current price	$121 (1.5x MSRP)	$191

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

RX 580X has 354% better value for money than RX 550.

Detailed specifications

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	512	2304
Core clock speed	1100 MHz	1257 MHz
Boost clock speed	1183 MHz	1340 MHz
Number of transistors	2,200 million	5,700 million
Manufacturing process technology	14 nm	14 nm
Power consumption (TDP)	50 Watt	185 Watt
Texture fill rate	37.86	193.0
Floating-point performance	1,211 gflops	6,175 gflops

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	PCIe 3.0 x8	PCIe 3.0 x16
Length	145 mm	241 mm
Width	2-slot	2-slot
Supplementary power connectors	None	1x 8-pin

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	GDDR5	GDDR5
Maximum RAM amount	4 GB	8 GB
Memory bus width	128 Bit	256 Bit
Memory clock speed	7000 MHz	8000 MHz
Memory bandwidth	112.0 GB/s	256.0 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors	1x DVI, 1x HDMI, 1x DisplayPort	1x HDMI, 3x DisplayPort
HDMI	+	+

API compatibility

List of supported graphics and general-purpose computing APIs, including their specific versions.

DirectX	12 (12_0)	12 (12_0)
Shader Model	6.4	6.4
OpenGL	4.6	4.6
OpenCL	2.0	2.0
Vulkan	1.2.131	1.2.131

Synthetic benchmark performance

Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark performance score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

RX 550 7.01

RX 580X 20.15
+187%

RX 580X outperforms RX 550 by 187% based on our aggregated benchmark results.

Passmark

This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

Benchmark coverage: 25%

RX 550 2714

RX 580X 7798
+187%

RX 580X outperforms RX 550 by 187% in Passmark.