Radeon RX 640 vs 550X

Place in the ranking	725	622
Place by popularity	not in top-100	not in top-100
Power efficiency	5.02	7.47
Architecture	GCN 4.0 (2016−2020)	GCN 4.0 (2016−2020)
GPU code name	Lexa	Polaris 23
Market segment	Desktop	Laptop
Release date	27 March 2019 (5 years ago)	13 May 2019 (5 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. 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	1082 MHz	1082 MHz
Boost clock speed	1218 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	38.98	48.72
Floating-point processing power	1.247 TFLOPS	1.559 TFLOPS
ROPs	16	16
TMUs	32	40

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).

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

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	2 GB	2 GB
Memory bus width	128 Bit	64 Bit
Memory clock speed	1750 MHz	1500 MHz
Memory bandwidth	112.0 GB/s	48 GB/s
Shared memory	-	-

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	No outputs
HDMI	+	-

Supported technologies

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

FreeSync

API and SDK compatibility

List of supported 3D 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 results comparison. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark 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 550X 3.51

RX 640 5.23
+49%

Passmark

This is the most ubiquitous GPU benchmark. 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.

Radeon 550X 1398

RX 640 2082
+48.9%

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Average FPS across all PC games

Here are the average frames per second in a large set of popular games across different resolutions:

Full HD

16−18

−62.5%

26
+62.5%

FPS performance in popular games

Full HD
Low Preset

Counter-Strike 2	14−16 +0%	14−16 +0%
Cyberpunk 2077	12−14 +0%	12−14 +0%

Full HD
Medium Preset

Battlefield 5	16−18 +0%	16−18 +0%
Counter-Strike 2	14−16 +0%	14−16 +0%
Cyberpunk 2077	12−14 +0%	12−14 +0%
Forza Horizon 4	21−24 +0%	21−24 +0%
Forza Horizon 5	10−12 +0%	10−12 +0%
Metro Exodus	17 +0%	17 +0%
Red Dead Redemption 2	26 +0%	26 +0%
Valorant	16−18 +0%	16−18 +0%

Full HD
High Preset

Battlefield 5	16−18 +0%	16−18 +0%
Counter-Strike 2	14−16 +0%	14−16 +0%
Cyberpunk 2077	12−14 +0%	12−14 +0%
Dota 2	18 +0%	18 +0%
Far Cry 5	30 +0%	30 +0%
Fortnite	30−35 +0%	30−35 +0%
Forza Horizon 4	21−24 +0%	21−24 +0%
Forza Horizon 5	10−12 +0%	10−12 +0%
Grand Theft Auto V	18−20 +0%	18−20 +0%
Metro Exodus	12−14 +0%	12−14 +0%
PLAYERUNKNOWN'S BATTLEGROUNDS	45−50 +0%	45−50 +0%
Red Dead Redemption 2	16−18 +0%	16−18 +0%
The Witcher 3: Wild Hunt	18−20 +0%	18−20 +0%
Valorant	16−18 +0%	16−18 +0%
World of Tanks	85−90 +0%	85−90 +0%

Full HD
Ultra Preset

Battlefield 5	16−18 +0%	16−18 +0%
Counter-Strike 2	14−16 +0%	14−16 +0%
Cyberpunk 2077	12−14 +0%	12−14 +0%
Dota 2	49 +0%	49 +0%
Far Cry 5	24−27 +0%	24−27 +0%
Forza Horizon 4	21−24 +0%	21−24 +0%
Forza Horizon 5	10−12 +0%	10−12 +0%
PLAYERUNKNOWN'S BATTLEGROUNDS	45−50 +0%	45−50 +0%
Valorant	16−18 +0%	16−18 +0%

1440p
High Preset

Dota 2	5−6 +0%	5−6 +0%
Grand Theft Auto V	6−7 +0%	6−7 +0%
PLAYERUNKNOWN'S BATTLEGROUNDS	30−35 +0%	30−35 +0%
Red Dead Redemption 2	4−5 +0%	4−5 +0%
World of Tanks	35−40 +0%	35−40 +0%

1440p
Ultra Preset

Battlefield 5	9−10 +0%	9−10 +0%
Counter-Strike 2	10−11 +0%	10−11 +0%
Cyberpunk 2077	5−6 +0%	5−6 +0%
Far Cry 5	12−14 +0%	12−14 +0%
Forza Horizon 4	9−10 +0%	9−10 +0%
Forza Horizon 5	8−9 +0%	8−9 +0%
Metro Exodus	5−6 +0%	5−6 +0%
The Witcher 3: Wild Hunt	8−9 +0%	8−9 +0%
Valorant	14−16 +0%	14−16 +0%

4K
High Preset

Dota 2	16−18 +0%	16−18 +0%
Grand Theft Auto V	16−18 +0%	16−18 +0%
PLAYERUNKNOWN'S BATTLEGROUNDS	16−18 +0%	16−18 +0%
Red Dead Redemption 2	3−4 +0%	3−4 +0%
The Witcher 3: Wild Hunt	16−18 +0%	16−18 +0%

4K
Ultra Preset

Battlefield 5	5−6 +0%	5−6 +0%
Cyberpunk 2077	2−3 +0%	2−3 +0%
Dota 2	16−18 +0%	16−18 +0%
Far Cry 5	6−7 +0%	6−7 +0%
Fortnite	5−6 +0%	5−6 +0%
Forza Horizon 4	5−6 +0%	5−6 +0%
Forza Horizon 5	3−4 +0%	3−4 +0%
Valorant	5−6 +0%	5−6 +0%