Radeon RX 6400 vs RX 550X Mobile

Place in the ranking	578	277
Place by popularity	not in top-100	100
Cost-effectiveness evaluation	no data	53.23
Power efficiency	8.41	25.70
Architecture	GCN 4.0 (2016−2020)	RDNA 2.0 (2020−2024)
GPU code name	Polaris 23	Navi 24
Market segment	Laptop	Desktop
Release date	11 April 2018 (6 years ago)	19 January 2022 (2 years ago)
Launch price (MSRP)	no data	$159

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

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	640	768
Core clock speed	1100 MHz	1923 MHz
Boost clock speed	1287 MHz	2321 MHz
Number of transistors	2,200 million	5,400 million
Manufacturing process technology	14 nm	6 nm
Power consumption (TDP)	50 Watt	53 Watt
Texture fill rate	51.48	111.4
Floating-point processing power	1.647 TFLOPS	3.565 TFLOPS
ROPs	16	32
TMUs	40	48
Ray Tracing Cores	no data	12

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	large	no data
Interface	PCIe 3.0 x8	PCIe 4.0 x4
Width	no data	1-slot
Supplementary power connectors	no data	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	GDDR6
Maximum RAM amount	2 GB	4 GB
Memory bus width	128 Bit	64 Bit
Memory clock speed	1500 MHz	2000 MHz
Memory bandwidth	96 GB/s	128.0 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	No outputs	1x HDMI 2.1, 1x DisplayPort 1.4a
HDMI	-	+

Supported technologies

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

FreeSync

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	12 (12_0)	12 Ultimate (12_2)
Shader Model	6.4	6.7
OpenGL	4.6	4.6
OpenCL	2.0	2.2
Vulkan	1.2.131	1.3

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

−208%

80−85
+208%

Cost per frame, $

1080p

no data

1.99

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

10−11

−200%

30−33
+200%

Full HD
Medium Preset

Assassin's Creed Odyssey	16−18 −213%	50−55 +213%
Assassin's Creed Valhalla	7−8 −200%	21−24 +200%
Battlefield 5	16−18 −224%	55−60 +224%
Call of Duty: Modern Warfare	12−14 −208%	40−45 +208%
Cyberpunk 2077	10−11 −200%	30−33 +200%
Far Cry 5	12−14 −208%	40−45 +208%
Far Cry New Dawn	16−18 −224%	55−60 +224%
Forza Horizon 4	40−45 −200%	120−130 +200%
Hitman 3	12−14 −192%	35−40 +192%
Horizon Zero Dawn	35−40 −197%	110−120 +197%
Metro Exodus	16−18 −213%	50−55 +213%
Red Dead Redemption 2	16−18 −224%	55−60 +224%
Shadow of the Tomb Raider	26 −208%	80−85 +208%
Watch Dogs: Legion	50−55 −220%	160−170 +220%

Full HD
High Preset

Assassin's Creed Odyssey	16−18 −213%	50−55 +213%
Assassin's Creed Valhalla	7−8 −200%	21−24 +200%
Battlefield 5	16−18 −224%	55−60 +224%
Call of Duty: Modern Warfare	12−14 −208%	40−45 +208%
Cyberpunk 2077	10−11 −200%	30−33 +200%
Far Cry 5	12−14 −208%	40−45 +208%
Far Cry New Dawn	16−18 −224%	55−60 +224%
Forza Horizon 4	40−45 −200%	120−130 +200%
Hitman 3	12−14 −192%	35−40 +192%
Horizon Zero Dawn	35−40 −197%	110−120 +197%
Metro Exodus	16−18 −213%	50−55 +213%
Red Dead Redemption 2	16−18 −224%	55−60 +224%
Shadow of the Tomb Raider	21−24 −210%	65−70 +210%
The Witcher 3: Wild Hunt	20−22 −200%	60−65 +200%
Watch Dogs: Legion	50−55 −220%	160−170 +220%

Full HD
Ultra Preset

Assassin's Creed Odyssey	16−18 −213%	50−55 +213%
Assassin's Creed Valhalla	7−8 −200%	21−24 +200%
Call of Duty: Modern Warfare	12−14 −208%	40−45 +208%
Cyberpunk 2077	10−11 −200%	30−33 +200%
Far Cry 5	12−14 −208%	40−45 +208%
Forza Horizon 4	40−45 −200%	120−130 +200%
Hitman 3	12−14 −192%	35−40 +192%
Horizon Zero Dawn	35−40 −197%	110−120 +197%
Shadow of the Tomb Raider	21−24 −210%	65−70 +210%
The Witcher 3: Wild Hunt	13 −208%	40−45 +208%
Watch Dogs: Legion	50−55 −220%	160−170 +220%

Full HD
Epic Preset

Red Dead Redemption 2

16−18

−224%

55−60
+224%

1440p
High Preset

Battlefield 5	12−14 −192%	35−40 +192%
Far Cry New Dawn	9−10 −200%	27−30 +200%

1440p
Ultra Preset

Assassin's Creed Odyssey	6−7 −200%	18−20 +200%
Assassin's Creed Valhalla	1−2 −200%	3−4 +200%
Call of Duty: Modern Warfare	6−7 −200%	18−20 +200%
Cyberpunk 2077	3−4 −200%	9−10 +200%
Far Cry 5	7−8 −200%	21−24 +200%
Forza Horizon 4	18−20 −206%	55−60 +206%
Hitman 3	10−11 −200%	30−33 +200%
Horizon Zero Dawn	12−14 −208%	40−45 +208%
Metro Exodus	5−6 −220%	16−18 +220%
Shadow of the Tomb Raider	2−3 −200%	6−7 +200%
The Witcher 3: Wild Hunt	5−6 −220%	16−18 +220%
Watch Dogs: Legion	35−40 −208%	120−130 +208%

1440p
Epic Preset

Red Dead Redemption 2

10−12

−218%

35−40
+218%

4K
High Preset

Battlefield 5	5−6 −220%	16−18 +220%
Far Cry New Dawn	4−5 −200%	12−14 +200%
Hitman 3	2−3 −200%	6−7 +200%
Horizon Zero Dawn	14−16 −200%	45−50 +200%
Metro Exodus	3−4 −200%	9−10 +200%
The Witcher 3: Wild Hunt	2−3 −200%	6−7 +200%

4K
Ultra Preset

Assassin's Creed Odyssey	4−5 −200%	12−14 +200%
Assassin's Creed Valhalla	3−4 −200%	9−10 +200%
Call of Duty: Modern Warfare	2−3 −200%	6−7 +200%
Cyberpunk 2077	0−1	0−1
Far Cry 5	3−4 −200%	9−10 +200%
Forza Horizon 4	6−7 −200%	18−20 +200%
Shadow of the Tomb Raider	0−1	0−1
Watch Dogs: Legion	2−3 −200%	6−7 +200%

4K
Epic Preset

Red Dead Redemption 2

6−7
−200%

18−20

+200%

This is how RX 550X Mobile and RX 6400 compete in popular games:

RX 6400 is 208% faster in 1080p

Pros & cons summary

Performance score	6.07	19.67
Recency	11 April 2018	19 January 2022
Maximum RAM amount	2 GB	4 GB
Chip lithography	14 nm	6 nm
Power consumption (TDP)	50 Watt	53 Watt

RX 550X Mobile has 6% lower power consumption.

RX 6400, on the other hand, has a 224.1% higher aggregate performance score, an age advantage of 3 years, a 100% higher maximum VRAM amount, and a 133.3% more advanced lithography process.

The Radeon RX 6400 is our recommended choice as it beats the Radeon RX 550X Mobile in performance tests.

Be aware that Radeon RX 550X Mobile is a notebook card while Radeon RX 6400 is a desktop one.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.