Radeon RX 6400 vs RX 6600M

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Aggregate performance score

We've compared Radeon RX 6600M with Radeon RX 6400, including specs and performance data.

RX 6600M
2021
8 GB GDDR6, 100 Watt
33.28
+81.5%

RX 6600M outperforms RX 6400 by an impressive 81% based on our aggregate benchmark results.

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking168318
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data45.84
Power efficiency25.3826.39
ArchitectureRDNA 2.0 (2020−2025)RDNA 2.0 (2020−2025)
GPU code nameNavi 23Navi 24
Market segmentLaptopDesktop
Release date31 May 2021 (4 years ago)19 January 2022 (3 years ago)
Launch price (MSRP)no data$159

Cost-effectiveness evaluation

The higher the performance-to-price ratio, the better. We use the manufacturer's recommended prices for comparison.

no data

Performance to price scatter graph

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 cores1792768
Core clock speed2068 MHz1923 MHz
Boost clock speed2416 MHz2321 MHz
Number of transistors11,060 million5,400 million
Manufacturing process technology7 nm6 nm
Power consumption (TDP)100 Watt53 Watt
Texture fill rate270.6111.4
Floating-point processing power8.659 TFLOPS3.565 TFLOPS
ROPs6432
TMUs11248
Ray Tracing Cores2812

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 sizemedium sizedno data
InterfacePCIe 4.0 x8PCIe 4.0 x4
Widthno data1-slot
Supplementary power connectorsNoneNone

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 typeGDDR6GDDR6
Maximum RAM amount8 GB4 GB
Memory bus width128 Bit64 Bit
Memory clock speed1750 MHz2000 MHz
Memory bandwidth224.0 GB/s128.0 GB/s
Shared memory--
Resizable BAR++

Connectivity and outputs

This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.

Display ConnectorsNo outputs1x HDMI 2.1, 1x DisplayPort 1.4a
HDMI-+

API and SDK compatibility

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

DirectX12 Ultimate (12_2)12 Ultimate (12_2)
Shader Model6.56.7
OpenGL4.64.6
OpenCL2.12.2
Vulkan1.31.3

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.

RX 6600M 33.28
+81.5%
RX 6400 18.34

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 6600M 13947
+81.5%
RX 6400 7685

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 HD100
+81.8%
55−60
−81.8%
1440p55
+83.3%
30−35
−83.3%
4K30
+87.5%
16−18
−87.5%

Cost per frame, $

1080pno data2.89
1440pno data5.30
4Kno data9.94

FPS performance in popular games

Full HD
Low Preset

Counter-Strike 2 180−190
+89%
100−105
−89%
Cyberpunk 2077 107
+94.5%
55−60
−94.5%
God of War 90
+100%
45−50
−100%

Full HD
Medium Preset

Battlefield 5 120−130
+86.2%
65−70
−86.2%
Counter-Strike 2 180−190
+89%
100−105
−89%
Cyberpunk 2077 83
+84.4%
45−50
−84.4%
Far Cry 5 116
+93.3%
60−65
−93.3%
Fortnite 150−160
+87.5%
80−85
−87.5%
Forza Horizon 4 202
+83.6%
110−120
−83.6%
Forza Horizon 5 121
+86.2%
65−70
−86.2%
God of War 85
+88.9%
45−50
−88.9%
PLAYERUNKNOWN'S BATTLEGROUNDS 130−140
+92.9%
70−75
−92.9%
Valorant 200−210
+87.3%
110−120
−87.3%

Full HD
High Preset

Battlefield 5 120−130
+86.2%
65−70
−86.2%
Counter-Strike 2 180−190
+89%
100−105
−89%
Counter-Strike: Global Offensive 270−280
+85.3%
150−160
−85.3%
Cyberpunk 2077 69
+97.1%
35−40
−97.1%
Dota 2 114
+90%
60−65
−90%
Far Cry 5 108
+96.4%
55−60
−96.4%
Fortnite 150−160
+87.5%
80−85
−87.5%
Forza Horizon 4 199
+99%
100−105
−99%
Forza Horizon 5 114
+90%
60−65
−90%
God of War 78
+95%
40−45
−95%
Grand Theft Auto V 116
+93.3%
60−65
−93.3%
Metro Exodus 80
+100%
40−45
−100%
PLAYERUNKNOWN'S BATTLEGROUNDS 130−140
+92.9%
70−75
−92.9%
The Witcher 3: Wild Hunt 142
+89.3%
75−80
−89.3%
Valorant 200−210
+87.3%
110−120
−87.3%

Full HD
Ultra Preset

Battlefield 5 120−130
+86.2%
65−70
−86.2%
Cyberpunk 2077 61
+103%
30−33
−103%
Dota 2 104
+89.1%
55−60
−89.1%
Far Cry 5 101
+83.6%
55−60
−83.6%
Forza Horizon 4 168
+86.7%
90−95
−86.7%
God of War 55
+83.3%
30−33
−83.3%
PLAYERUNKNOWN'S BATTLEGROUNDS 130−140
+92.9%
70−75
−92.9%
The Witcher 3: Wild Hunt 85
+88.9%
45−50
−88.9%
Valorant 144
+92%
75−80
−92%

Full HD
Epic Preset

Fortnite 150−160
+87.5%
80−85
−87.5%

1440p
High Preset

Counter-Strike 2 80−85
+100%
40−45
−100%
Counter-Strike: Global Offensive 230−240
+95.8%
120−130
−95.8%
Grand Theft Auto V 61
+103%
30−33
−103%
Metro Exodus 47
+95.8%
24−27
−95.8%
PLAYERUNKNOWN'S BATTLEGROUNDS 170−180
+84.2%
95−100
−84.2%
Valorant 240−250
+84.6%
130−140
−84.6%

1440p
Ultra Preset

Battlefield 5 85−90
+97.8%
45−50
−97.8%
Cyberpunk 2077 39
+85.7%
21−24
−85.7%
Far Cry 5 90
+100%
45−50
−100%
Forza Horizon 4 128
+82.9%
70−75
−82.9%
God of War 44
+83.3%
24−27
−83.3%
The Witcher 3: Wild Hunt 62
+107%
30−33
−107%

1440p
Epic Preset

Fortnite 85−90
+93.3%
45−50
−93.3%

4K
High Preset

Counter-Strike 2 35−40
+106%
18−20
−106%
Grand Theft Auto V 58
+93.3%
30−33
−93.3%
Metro Exodus 28
+100%
14−16
−100%
The Witcher 3: Wild Hunt 44
+83.3%
24−27
−83.3%
Valorant 200−210
+86.4%
110−120
−86.4%

4K
Ultra Preset

Battlefield 5 50−55
+96.3%
27−30
−96.3%
Counter-Strike 2 35−40
+106%
18−20
−106%
Cyberpunk 2077 19
+90%
10−11
−90%
Dota 2 80
+100%
40−45
−100%
Far Cry 5 44
+83.3%
24−27
−83.3%
Forza Horizon 4 74
+85%
40−45
−85%
God of War 26
+85.7%
14−16
−85.7%
PLAYERUNKNOWN'S BATTLEGROUNDS 40−45
+100%
21−24
−100%

4K
Epic Preset

Fortnite 40−45
+95.2%
21−24
−95.2%

This is how RX 6600M and RX 6400 compete in popular games:

  • RX 6600M is 82% faster in 1080p
  • RX 6600M is 83% faster in 1440p
  • RX 6600M is 88% faster in 4K

Pros & cons summary


Performance score 33.28 18.34
Recency 31 May 2021 19 January 2022
Maximum RAM amount 8 GB 4 GB
Chip lithography 7 nm 6 nm
Power consumption (TDP) 100 Watt 53 Watt

RX 6600M has a 81.5% higher aggregate performance score, and a 100% higher maximum VRAM amount.

RX 6400, on the other hand, has an age advantage of 7 months, a 16.7% more advanced lithography process, and 88.7% lower power consumption.

The Radeon RX 6600M is our recommended choice as it beats the Radeon RX 6400 in performance tests.

Be aware that Radeon RX 6600M is a notebook graphics card while Radeon RX 6400 is a desktop one.

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AMD Radeon RX 6600M
Radeon RX 6600M
AMD Radeon RX 6400
Radeon RX 6400

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