Radeon RX 6600M vs GeForce 8400M G
Aggregate performance score
We've compared GeForce 8400M G and Radeon RX 6600M, covering specs and all relevant benchmarks.
6600M outperforms 8400M G by a whopping 13220% based on our aggregate benchmark results.
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1423 | 175 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 1.92 | 25.58 |
| Architecture | Tesla (2006−2010) | RDNA 2.0 (2020−2025) |
| GPU code name | G86 | Navi 23 |
| Market segment | Laptop | Laptop |
| Release date | 9 May 2007 (18 years ago) | 31 May 2021 (4 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 | 8 | 1792 |
| Core clock speed | 400 MHz | 2068 MHz |
| Boost clock speed | no data | 2416 MHz |
| Number of transistors | 210 million | 11,060 million |
| Manufacturing process technology | 80 nm | 7 nm |
| Power consumption (TDP) | 10 Watt | 100 Watt |
| Texture fill rate | 3.200 | 270.6 |
| Floating-point processing power | 0.0128 TFLOPS | 8.659 TFLOPS |
| ROPs | 4 | 64 |
| TMUs | 8 | 112 |
| Ray Tracing Cores | no data | 28 |
| L0 Cache | no data | 448 KB |
| L1 Cache | no data | 512 KB |
| L2 Cache | 16 KB | 2 MB |
| L3 Cache | no data | 32 MB |
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 | medium sized |
| Interface | PCIe 1.0 x16 | PCIe 4.0 x8 |
| 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 | GDDR3 | GDDR6 |
| Maximum RAM amount | 256 MB | 8 GB |
| Memory bus width | 64 Bit | 128 Bit |
| Memory clock speed | 400 MHz | 1750 MHz |
| Memory bandwidth | 6.4 GB/s | 224.0 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 Connectors | No outputs | No outputs |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11.1 (10_0) | 12 Ultimate (12_2) |
| Shader Model | 4.0 | 6.5 |
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 2.1 |
| Vulkan | N/A | 1.3 |
| CUDA | 1.1 | - |
Synthetic benchmarks
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.
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.
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 | 0−1 | 100 |
| 1440p | -0−1 | 54 |
| 4K | -0−1 | 30 |
FPS performance in popular games
Full HD
Low
| Cyberpunk 2077 | 1−2
−10600%
|
107
+10600%
|
| Hogwarts Legacy | 5−6
−1900%
|
100
+1900%
|
Full HD
Medium
| Cyberpunk 2077 | 1−2
−8200%
|
83
+8200%
|
| Forza Horizon 4 | 3−4
−6633%
|
202
+6633%
|
| Hogwarts Legacy | 5−6
−1620%
|
86
+1620%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 7−8
−1829%
|
130−140
+1829%
|
| Valorant | 24−27
−724%
|
200−210
+724%
|
Full HD
High
| Counter-Strike: Global Offensive | 12−14
−2038%
|
270−280
+2038%
|
| Cyberpunk 2077 | 1−2
−6800%
|
69
+6800%
|
| Dota 2 | 9−10
−1167%
|
114
+1167%
|
| Forza Horizon 4 | 3−4
−6533%
|
199
+6533%
|
| Hogwarts Legacy | 5−6
−1260%
|
68
+1260%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 7−8
−1829%
|
130−140
+1829%
|
| The Witcher 3: Wild Hunt | 5−6
−2740%
|
142
+2740%
|
| Valorant | 24−27
−724%
|
200−210
+724%
|
Full HD
Ultra
| Cyberpunk 2077 | 1−2
−6000%
|
61
+6000%
|
| Dota 2 | 9−10
−1056%
|
104
+1056%
|
| Forza Horizon 4 | 3−4
−5500%
|
168
+5500%
|
| Hogwarts Legacy | 5−6
−940%
|
52
+940%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 7−8
−1829%
|
130−140
+1829%
|
| The Witcher 3: Wild Hunt | 5−6
−1600%
|
85
+1600%
|
| Valorant | 24−27
−476%
|
144
+476%
|
1440p
High
| Counter-Strike 2 | 3−4
−2600%
|
80−85
+2600%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 3−4
−5733%
|
170−180
+5733%
|
1440p
Ultra
| Forza Horizon 4 | 1−2
−12700%
|
128
+12700%
|
| The Witcher 3: Wild Hunt | 1−2
−6100%
|
62
+6100%
|
4K
High
| Grand Theft Auto V | 14−16
−314%
|
58
+314%
|
| Valorant | 1−2
−20400%
|
200−210
+20400%
|
4K
Ultra
| PLAYERUNKNOWN'S BATTLEGROUNDS | 1−2
−4100%
|
40−45
+4100%
|
4K
Epic
| Fortnite | 2−3
−1950%
|
40−45
+1950%
|
Full HD
Low
| Counter-Strike 2 | 180−190
+0%
|
180−190
+0%
|
Full HD
Medium
| Battlefield 5 | 120−130
+0%
|
120−130
+0%
|
| Counter-Strike 2 | 180−190
+0%
|
180−190
+0%
|
| Far Cry 5 | 116
+0%
|
116
+0%
|
| Fortnite | 150−160
+0%
|
150−160
+0%
|
| Forza Horizon 5 | 121
+0%
|
121
+0%
|
Full HD
High
| Battlefield 5 | 120−130
+0%
|
120−130
+0%
|
| Counter-Strike 2 | 180−190
+0%
|
180−190
+0%
|
| Far Cry 5 | 108
+0%
|
108
+0%
|
| Fortnite | 150−160
+0%
|
150−160
+0%
|
| Forza Horizon 5 | 114
+0%
|
114
+0%
|
| Grand Theft Auto V | 116
+0%
|
116
+0%
|
| Metro Exodus | 80
+0%
|
80
+0%
|
Full HD
Ultra
| Battlefield 5 | 120−130
+0%
|
120−130
+0%
|
| Far Cry 5 | 101
+0%
|
101
+0%
|
Full HD
Epic
| Fortnite | 150−160
+0%
|
150−160
+0%
|
1440p
High
| Counter-Strike: Global Offensive | 230−240
+0%
|
230−240
+0%
|
| Grand Theft Auto V | 61
+0%
|
61
+0%
|
| Metro Exodus | 47
+0%
|
47
+0%
|
| Valorant | 240−250
+0%
|
240−250
+0%
|
1440p
Ultra
| Battlefield 5 | 85−90
+0%
|
85−90
+0%
|
| Cyberpunk 2077 | 39
+0%
|
39
+0%
|
| Far Cry 5 | 90
+0%
|
90
+0%
|
| Hogwarts Legacy | 36
+0%
|
36
+0%
|
1440p
Epic
| Fortnite | 85−90
+0%
|
85−90
+0%
|
4K
High
| Counter-Strike 2 | 35−40
+0%
|
35−40
+0%
|
| Hogwarts Legacy | 21−24
+0%
|
21−24
+0%
|
| Metro Exodus | 28
+0%
|
28
+0%
|
| The Witcher 3: Wild Hunt | 44
+0%
|
44
+0%
|
4K
Ultra
| Battlefield 5 | 50−55
+0%
|
50−55
+0%
|
| Counter-Strike 2 | 35−40
+0%
|
35−40
+0%
|
| Cyberpunk 2077 | 19
+0%
|
19
+0%
|
| Dota 2 | 80
+0%
|
80
+0%
|
| Far Cry 5 | 44
+0%
|
44
+0%
|
| Forza Horizon 4 | 74
+0%
|
74
+0%
|
| Hogwarts Legacy | 19
+0%
|
19
+0%
|
Here's the range of performance differences observed across popular games:
- in Valorant, with 4K resolution and the High Preset, the RX 6600M is 20400% faster.
All in all, in popular games:
- RX 6600M performs better in 30 tests (45%)
- there's a draw in 36 tests (55%)
Pros & cons summary
| Performance score | 0.25 | 33.30 |
| Recency | 9 May 2007 | 31 May 2021 |
| Maximum RAM amount | 256 MB | 8 GB |
| Chip lithography | 80 nm | 7 nm |
| Power consumption (TDP) | 10 Watt | 100 Watt |
8400M G has 900% lower power consumption.
RX 6600M, on the other hand, has a 13220% higher aggregate performance score, an age advantage of 14 years, a 3100% higher maximum VRAM amount, and a 1042.9% more advanced lithography process.
The Radeon RX 6600M is our recommended choice as it beats the GeForce 8400M G in performance tests.
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
