Radeon RX 7800 XT vs RX 6400

Place in the ranking	279	31
Place by popularity	not in top-100	40
Cost-effectiveness evaluation	54.14	67.91
Power efficiency	25.67	16.44
Architecture	RDNA 2.0 (2020−2024)	RDNA 3.0 (2022−2024)
GPU code name	Navi 24	Navi 32
Market segment	Desktop	Desktop
Release date	19 January 2022 (2 years ago)	25 August 2023 (1 year ago)
Launch price (MSRP)	$159	$499

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

RX 7800 XT has 25% better value for money than RX 6400.

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	768	3840
Core clock speed	1923 MHz	1295 MHz
Boost clock speed	2321 MHz	2430 MHz
Number of transistors	5,400 million	28,100 million
Manufacturing process technology	6 nm	5 nm
Power consumption (TDP)	53 Watt	263 Watt
Texture fill rate	111.4	583.2
Floating-point processing power	3.565 TFLOPS	37.32 TFLOPS
ROPs	32	96
TMUs	48	240
Ray Tracing Cores	12	60

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 4.0 x4	PCIe 4.0 x16
Length	no data	267 mm
Width	1-slot	2-slot
Supplementary power connectors	None	2x 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	GDDR6	GDDR6
Maximum RAM amount	4 GB	16 GB
Memory bus width	64 Bit	256 Bit
Memory clock speed	2000 MHz	2438 MHz
Memory bandwidth	128.0 GB/s	624.1 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 HDMI 2.1, 1x DisplayPort 1.4a	1x HDMI 2.1a, 3x DisplayPort 2.1
HDMI	+	+

API compatibility

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

DirectX	12 Ultimate (12_2)	12 Ultimate (12_2)
Shader Model	6.7	6.7
OpenGL	4.6	4.6
OpenCL	2.2	2.2
Vulkan	1.3	1.3

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.

RX 6400 19.83

RX 7800 XT 63.03
+218%

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.

RX 6400 7638

RX 7800 XT 24279
+218%

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	65−70 −232%	216 +232%
1440p	35−40 −249%	122 +249%
4K	21−24 −233%	70 +233%

Cost per frame, $

1080p	2.45	2.31
1440p	4.54	4.09
4K	7.57	7.13

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

258

+0%

258

+0%

Full HD
Medium Preset

Assassin's Creed Odyssey	178 +0%	178 +0%
Assassin's Creed Valhalla	222 +0%	222 +0%
Battlefield 5	190−200 +0%	190−200 +0%
Call of Duty: Modern Warfare	110−120 +0%	110−120 +0%
Cyberpunk 2077	193 +0%	193 +0%
Far Cry 5	110−120 +0%	110−120 +0%
Far Cry New Dawn	150−160 +0%	150−160 +0%
Forza Horizon 4	230−240 +0%	230−240 +0%
Hitman 3	120−130 +0%	120−130 +0%
Horizon Zero Dawn	230−240 +0%	230−240 +0%
Metro Exodus	150−160 +0%	150−160 +0%
Red Dead Redemption 2	110−120 +0%	110−120 +0%
Shadow of the Tomb Raider	250−260 +0%	250−260 +0%
Watch Dogs: Legion	150−160 +0%	150−160 +0%

Full HD
High Preset

Assassin's Creed Odyssey	261 +0%	261 +0%
Assassin's Creed Valhalla	181 +0%	181 +0%
Battlefield 5	190−200 +0%	190−200 +0%
Call of Duty: Modern Warfare	110−120 +0%	110−120 +0%
Cyberpunk 2077	161 +0%	161 +0%
Far Cry 5	110−120 +0%	110−120 +0%
Far Cry New Dawn	150−160 +0%	150−160 +0%
Forza Horizon 4	230−240 +0%	230−240 +0%
Hitman 3	120−130 +0%	120−130 +0%
Horizon Zero Dawn	230−240 +0%	230−240 +0%
Metro Exodus	150−160 +0%	150−160 +0%
Red Dead Redemption 2	110−120 +0%	110−120 +0%
Shadow of the Tomb Raider	398 +0%	398 +0%
The Witcher 3: Wild Hunt	130−140 +0%	130−140 +0%
Watch Dogs: Legion	150−160 +0%	150−160 +0%

Full HD
Ultra Preset

Assassin's Creed Odyssey	130 +0%	130 +0%
Assassin's Creed Valhalla	158 +0%	158 +0%
Call of Duty: Modern Warfare	110−120 +0%	110−120 +0%
Cyberpunk 2077	148 +0%	148 +0%
Far Cry 5	110−120 +0%	110−120 +0%
Forza Horizon 4	222 +0%	222 +0%
Hitman 3	120−130 +0%	120−130 +0%
Horizon Zero Dawn	274 +0%	274 +0%
Shadow of the Tomb Raider	340 +0%	340 +0%
The Witcher 3: Wild Hunt	200 +0%	200 +0%
Watch Dogs: Legion	145 +0%	145 +0%

Full HD
Epic Preset

Red Dead Redemption 2

110−120

+0%

110−120

+0%

1440p
High Preset

Battlefield 5	140−150 +0%	140−150 +0%
Far Cry New Dawn	95−100 +0%	95−100 +0%

1440p
Ultra Preset

Assassin's Creed Odyssey	119 +0%	119 +0%
Assassin's Creed Valhalla	124 +0%	124 +0%
Call of Duty: Modern Warfare	70−75 +0%	70−75 +0%
Cyberpunk 2077	97 +0%	97 +0%
Far Cry 5	70−75 +0%	70−75 +0%
Forza Horizon 4	270−280 +0%	270−280 +0%
Hitman 3	90−95 +0%	90−95 +0%
Horizon Zero Dawn	217 +0%	217 +0%
Metro Exodus	148 +0%	148 +0%
Shadow of the Tomb Raider	243 +0%	243 +0%
The Witcher 3: Wild Hunt	147 +0%	147 +0%
Watch Dogs: Legion	230−240 +0%	230−240 +0%

1440p
Epic Preset

Red Dead Redemption 2

100−110

+0%

100−110

+0%

4K
High Preset

Battlefield 5	70−75 +0%	70−75 +0%
Far Cry New Dawn	60−65 +0%	60−65 +0%
Hitman 3	50−55 +0%	50−55 +0%
Horizon Zero Dawn	220−230 +0%	220−230 +0%
Metro Exodus	90−95 +0%	90−95 +0%
The Witcher 3: Wild Hunt	118 +0%	118 +0%

4K
Ultra Preset

Assassin's Creed Odyssey	89 +0%	89 +0%
Assassin's Creed Valhalla	72 +0%	72 +0%
Call of Duty: Modern Warfare	45−50 +0%	45−50 +0%
Cyberpunk 2077	44 +0%	44 +0%
Far Cry 5	40−45 +0%	40−45 +0%
Forza Horizon 4	164 +0%	164 +0%
Shadow of the Tomb Raider	130 +0%	130 +0%
Watch Dogs: Legion	67 +0%	67 +0%

4K
Epic Preset

Red Dead Redemption 2

60−65

+0%

60−65

+0%

This is how RX 6400 and RX 7800 XT compete in popular games:

RX 7800 XT is 232% faster in 1080p
RX 7800 XT is 249% faster in 1440p
RX 7800 XT is 233% faster in 4K

All in all, in popular games:

there's a draw in 72 tests (100%)

Pros & cons summary

Performance score	19.83	63.03
Recency	19 January 2022	25 August 2023
Maximum RAM amount	4 GB	16 GB
Chip lithography	6 nm	5 nm
Power consumption (TDP)	53 Watt	263 Watt

RX 6400 has 396.2% lower power consumption.

RX 7800 XT, on the other hand, has a 217.9% higher aggregate performance score, an age advantage of 1 year, a 300% higher maximum VRAM amount, and a 20% more advanced lithography process.

The Radeon RX 7800 XT is our recommended choice as it beats the Radeon RX 6400 in performance tests.

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