Radeon RX 640 vs 550

Place in performance ranking	597	589
Place by popularity	not in top-100	not in top-100
Cost-Effectiveness Evaluation	4.37	12.60
Architecture	GCN 4.0 (2016−2020)	Polaris (2016−2019)
GPU code name	Lexa	Polaris 12
Market segment	Desktop	Laptop
Release date	20 April 2017 (7 years ago)	12 August 2019 (4 years ago)
Launch price (MSRP)	$79	no data
Current price	$94 (1.2x MSRP)	$193

Cost-Effectiveness Evaluation

Performance to price ratio. The higher, the better.

RX 640 has 188% better value for money than Radeon 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	640
Core clock speed	1100 MHz	1218 MHz
Boost clock speed	1183 MHz	1218 MHz
Number of transistors	2,200 million	2,200 million
Manufacturing process technology	14 nm	14 nm
Power consumption (TDP)	50 Watt	50 Watt
Texture fill rate	37.86	38.98

Form Factor & Compatibility

Information on Radeon 550 and Radeon RX 640 compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.

Laptop size	no data	large
Interface	PCIe 3.0 x8	PCIe 3.0 x8
Length	145 mm	no data
Width	2-slot	no data
Supplementary power connectors	None	None

Memory type	GDDR5	GDDR5
Maximum RAM amount	2 GB	4 GB
Memory bus width	64 Bit	64 Bit
Memory clock speed	7000 MHz	6000 MHz
Memory bandwidth	56 GB/s	112.0 GB/s
Shared memory	no data	-

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 DVI, 1x HDMI, 1x DisplayPort
HDMI	+	+

Supported GPU Technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

FreeSync

no data

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.

Radeon 550 4.87

RX 640 5.05
+3.7%

RX 640 outperforms 550 by 4% 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%

Radeon 550 1885

RX 640 1953
+3.6%

RX 640 outperforms 550 by 4% in Passmark.