Radeon RX 7400 vs HD 6620G
Aggregate performance score
We've compared Radeon HD 6620G with Radeon RX 7400, including specs and performance data.
RX 7400 outperforms HD 6620G by a whopping 3373% 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 | 1198 | 223 |
| Place by popularity | not in top-100 | not in top-100 |
| Power efficiency | 1.80 | 50.92 |
| Architecture | TeraScale 2 (2009−2015) | RDNA 3.0 (2022−2026) |
| GPU code name | Sumo | Navi 33 |
| Market segment | Laptop | Desktop |
| Release date | 7 December 2011 (14 years ago) | 8 August 2025 (less than a year 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 | 400 | 1792 |
| Core clock speed | 444 MHz | 1452 MHz |
| Boost clock speed | no data | 2300 MHz |
| Number of transistors | 1,178 million | 13,300 million |
| Manufacturing process technology | 32 nm | 6 nm |
| Power consumption (TDP) | 35 Watt | 43 Watt |
| Texture fill rate | 8.880 | 257.6 |
| Floating-point processing power | 0.3552 TFLOPS | 16.49 TFLOPS |
| ROPs | 8 | 64 |
| TMUs | 20 | 112 |
| Ray Tracing Cores | no data | 28 |
| L0 Cache | no data | 448 KB |
| L1 Cache | no data | 512 KB |
| L2 Cache | no data | 2 MB |
| L3 Cache | no data | 64 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 | medium sized | no data |
| Interface | IGP | PCIe 4.0 x8 |
| Width | no data | 2-slot |
| Supplementary power connectors | no data | 1x 6-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 | System Shared | GDDR6 |
| Maximum RAM amount | System Shared | 8 GB |
| Memory bus width | System Shared | 128 Bit |
| Memory clock speed | System Shared | 2250 MHz |
| Memory bandwidth | no data | 288.0 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 | 1x HDMI 2.1a, 3x DisplayPort 2.1 |
| HDMI | - | + |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11.2 (11_0) | 12 Ultimate (12_2) |
| Shader Model | 5.0 | 6.8 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 2.2 |
| Vulkan | N/A | 1.3 |
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 | 13
−3362%
| 450−500
+3362%
|
FPS performance in popular games
Full HD
Low
| Cyberpunk 2077 | 2−3
−3150%
|
65−70
+3150%
|
| Hogwarts Legacy | 5−6
−3300%
|
170−180
+3300%
|
Full HD
Medium
| Cyberpunk 2077 | 2−3
−3150%
|
65−70
+3150%
|
| Far Cry 5 | 1−2
−2900%
|
30−33
+2900%
|
| Fortnite | 0−1 | 0−1 |
| Forza Horizon 4 | 6−7
−3233%
|
200−210
+3233%
|
| Hogwarts Legacy | 5−6
−3300%
|
170−180
+3300%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 8−9
−3275%
|
270−280
+3275%
|
| Valorant | 30−33
−3233%
|
1000−1050
+3233%
|
Full HD
High
| Counter-Strike: Global Offensive | 21−24
−3309%
|
750−800
+3309%
|
| Cyberpunk 2077 | 2−3
−3150%
|
65−70
+3150%
|
| Dota 2 | 12−14
−3362%
|
450−500
+3362%
|
| Far Cry 5 | 1−2
−2900%
|
30−33
+2900%
|
| Fortnite | 0−1 | 0−1 |
| Forza Horizon 4 | 6−7
−3233%
|
200−210
+3233%
|
| Hogwarts Legacy | 5−6
−3300%
|
170−180
+3300%
|
| Metro Exodus | 1−2
−2900%
|
30−33
+2900%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 8−9
−3275%
|
270−280
+3275%
|
| The Witcher 3: Wild Hunt | 6−7
−3233%
|
200−210
+3233%
|
| Valorant | 30−33
−3233%
|
1000−1050
+3233%
|
Full HD
Ultra
| Cyberpunk 2077 | 2−3
−3150%
|
65−70
+3150%
|
| Dota 2 | 12−14
−3362%
|
450−500
+3362%
|
| Far Cry 5 | 1−2
−2900%
|
30−33
+2900%
|
| Forza Horizon 4 | 6−7
−3233%
|
200−210
+3233%
|
| Hogwarts Legacy | 5−6
−3300%
|
170−180
+3300%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 8−9
−3275%
|
270−280
+3275%
|
| The Witcher 3: Wild Hunt | 6−7
−3233%
|
200−210
+3233%
|
| Valorant | 30−33
−3233%
|
1000−1050
+3233%
|
Full HD
Epic
| Fortnite | 0−1 | 0−1 |
1440p
High
| Counter-Strike 2 | 3−4
−3233%
|
100−105
+3233%
|
| Counter-Strike: Global Offensive | 5−6
−3300%
|
170−180
+3300%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 9−10
−3233%
|
300−310
+3233%
|
1440p
Ultra
| Cyberpunk 2077 | 0−1 | 0−1 |
| Far Cry 5 | 0−1 | 0−1 |
| Forza Horizon 4 | 2−3
−3150%
|
65−70
+3150%
|
| Hogwarts Legacy | 1−2
−2900%
|
30−33
+2900%
|
| The Witcher 3: Wild Hunt | 2−3
−3150%
|
65−70
+3150%
|
1440p
Epic
| Fortnite | 1−2
−2900%
|
30−33
+2900%
|
4K
High
| Grand Theft Auto V | 14−16
−3114%
|
450−500
+3114%
|
| Valorant | 4−5
−3150%
|
130−140
+3150%
|
4K
Ultra
| PLAYERUNKNOWN'S BATTLEGROUNDS | 2−3
−3150%
|
65−70
+3150%
|
4K
Epic
| Fortnite | 2−3
−3150%
|
65−70
+3150%
|
This is how HD 6620G and RX 7400 compete in popular games:
- RX 7400 is 3362% faster in 1080p
Pros & cons summary
| Performance score | 0.82 | 28.48 |
| Recency | 7 December 2011 | 8 August 2025 |
| Chip lithography | 32 nm | 6 nm |
| Power consumption (TDP) | 35 Watt | 43 Watt |
HD 6620G has 22.9% lower power consumption.
RX 7400, on the other hand, has a 3373.2% higher aggregate performance score, an age advantage of 13 years, and a 433.3% more advanced lithography process.
The Radeon RX 7400 is our recommended choice as it beats the Radeon HD 6620G in performance tests.
Be aware that Radeon HD 6620G is a notebook graphics card while Radeon RX 7400 is a desktop one.
Other comparisons
We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.
