Radeon RX 7900 GRE vs RX 6400
Aggregate performance score
We've compared Radeon RX 6400 and Radeon RX 7900 GRE, covering specs and all relevant benchmarks.
RX 7900 GRE outperforms RX 6400 by a whopping 254% based on our aggregate benchmark results.
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 296 | 24 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 50.89 | 67.73 |
| Power efficiency | 25.54 | 18.45 |
| Architecture | RDNA 2.0 (2020−2024) | RDNA 3.0 (2022−2025) |
| GPU code name | Navi 24 | Navi 31 |
| Market segment | Desktop | Desktop |
| Release date | 19 January 2022 (3 years ago) | 27 July 2023 (1 year ago) |
| Launch price (MSRP) | $159 | $549 |
Cost-effectiveness evaluation
The higher the performance-to-price ratio, the better. We use the manufacturer's recommended prices for comparison.
RX 7900 GRE has 33% 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 | 5120 |
| Core clock speed | 1923 MHz | 1287 MHz |
| Boost clock speed | 2321 MHz | 2245 MHz |
| Number of transistors | 5,400 million | 57,700 million |
| Manufacturing process technology | 6 nm | 5 nm |
| Power consumption (TDP) | 53 Watt | 260 Watt |
| Texture fill rate | 111.4 | 718.4 |
| Floating-point processing power | 3.565 TFLOPS | 45.98 TFLOPS |
| ROPs | 32 | 160 |
| TMUs | 48 | 320 |
| Ray Tracing Cores | 12 | 80 |
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 | 276 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 | 2250 MHz |
| Memory bandwidth | 128.0 GB/s | 576.0 GB/s |
| Shared memory | - | - |
| Resizable BAR | + | + |
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, 2x DisplayPort 2.1, 1x USB Type-C |
| HDMI | + | + |
API and SDK 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 | 6.8 |
| 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.
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 | 55−60
−275%
| 206
+275%
|
| 1440p | 35−40
−269%
| 129
+269%
|
| 4K | 21−24
−271%
| 78
+271%
|
Cost per frame, $
| 1080p | 2.89
−8.5%
| 2.67
+8.5%
|
| 1440p | 4.54
−6.7%
| 4.26
+6.7%
|
| 4K | 7.57
−7.6%
| 7.04
+7.6%
|
- RX 7900 GRE has 8% lower cost per frame in 1080p
- RX 7900 GRE has 7% lower cost per frame in 1440p
- RX 7900 GRE has 8% lower cost per frame in 4K
FPS performance in popular games
Full HD
Low Preset
| Atomic Heart | 303
+0%
|
303
+0%
|
| Counter-Strike 2 | 300−350
+0%
|
300−350
+0%
|
| Cyberpunk 2077 | 208
+0%
|
208
+0%
|
Full HD
Medium Preset
| Atomic Heart | 232
+0%
|
232
+0%
|
| Battlefield 5 | 170−180
+0%
|
170−180
+0%
|
| Counter-Strike 2 | 300−350
+0%
|
300−350
+0%
|
| Cyberpunk 2077 | 184
+0%
|
184
+0%
|
| Far Cry 5 | 174
+0%
|
174
+0%
|
| Fortnite | 300−350
+0%
|
300−350
+0%
|
| Forza Horizon 4 | 250−260
+0%
|
250−260
+0%
|
| Forza Horizon 5 | 180−190
+0%
|
180−190
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 170−180
+0%
|
170−180
+0%
|
| Valorant | 350−400
+0%
|
350−400
+0%
|
Full HD
High Preset
| Atomic Heart | 150
+0%
|
150
+0%
|
| Battlefield 5 | 170−180
+0%
|
170−180
+0%
|
| Counter-Strike 2 | 300−350
+0%
|
300−350
+0%
|
| Counter-Strike: Global Offensive | 270−280
+0%
|
270−280
+0%
|
| Cyberpunk 2077 | 158
+0%
|
158
+0%
|
| Far Cry 5 | 168
+0%
|
168
+0%
|
| Fortnite | 300−350
+0%
|
300−350
+0%
|
| Forza Horizon 4 | 250−260
+0%
|
250−260
+0%
|
| Forza Horizon 5 | 180−190
+0%
|
180−190
+0%
|
| Grand Theft Auto V | 164
+0%
|
164
+0%
|
| Metro Exodus | 179
+0%
|
179
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 170−180
+0%
|
170−180
+0%
|
| The Witcher 3: Wild Hunt | 382
+0%
|
382
+0%
|
| Valorant | 350−400
+0%
|
350−400
+0%
|
Full HD
Ultra Preset
| Battlefield 5 | 170−180
+0%
|
170−180
+0%
|
| Cyberpunk 2077 | 148
+0%
|
148
+0%
|
| Far Cry 5 | 155
+0%
|
155
+0%
|
| Forza Horizon 4 | 250−260
+0%
|
250−260
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 170−180
+0%
|
170−180
+0%
|
| The Witcher 3: Wild Hunt | 209
+0%
|
209
+0%
|
| Valorant | 350−400
+0%
|
350−400
+0%
|
Full HD
Epic Preset
| Fortnite | 300−350
+0%
|
300−350
+0%
|
1440p
High Preset
| Counter-Strike 2 | 190−200
+0%
|
190−200
+0%
|
| Counter-Strike: Global Offensive | 500−550
+0%
|
500−550
+0%
|
| Grand Theft Auto V | 130
+0%
|
130
+0%
|
| Metro Exodus | 111
+0%
|
111
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 170−180
+0%
|
170−180
+0%
|
| Valorant | 450−500
+0%
|
450−500
+0%
|
1440p
Ultra Preset
| Battlefield 5 | 160−170
+0%
|
160−170
+0%
|
| Cyberpunk 2077 | 98
+0%
|
98
+0%
|
| Far Cry 5 | 154
+0%
|
154
+0%
|
| Forza Horizon 4 | 220−230
+0%
|
220−230
+0%
|
| The Witcher 3: Wild Hunt | 156
+0%
|
156
+0%
|
1440p
Epic Preset
| Fortnite | 150−160
+0%
|
150−160
+0%
|
4K
High Preset
| Atomic Heart | 60−65
+0%
|
60−65
+0%
|
| Counter-Strike 2 | 85−90
+0%
|
85−90
+0%
|
| Grand Theft Auto V | 151
+0%
|
151
+0%
|
| Metro Exodus | 71
+0%
|
71
+0%
|
| The Witcher 3: Wild Hunt | 125
+0%
|
125
+0%
|
| Valorant | 300−350
+0%
|
300−350
+0%
|
4K
Ultra Preset
| Battlefield 5 | 120−130
+0%
|
120−130
+0%
|
| Counter-Strike 2 | 85−90
+0%
|
85−90
+0%
|
| Cyberpunk 2077 | 45
+0%
|
45
+0%
|
| Far Cry 5 | 107
+0%
|
107
+0%
|
| Forza Horizon 4 | 170−180
+0%
|
170−180
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 95−100
+0%
|
95−100
+0%
|
4K
Epic Preset
| Fortnite | 75−80
+0%
|
75−80
+0%
|
This is how RX 6400 and RX 7900 GRE compete in popular games:
- RX 7900 GRE is 275% faster in 1080p
- RX 7900 GRE is 269% faster in 1440p
- RX 7900 GRE is 271% faster in 4K
All in all, in popular games:
- there's a draw in 60 tests (100%)
Pros & cons summary
| Performance score | 17.09 | 60.54 |
| Recency | 19 January 2022 | 27 July 2023 |
| Maximum RAM amount | 4 GB | 16 GB |
| Chip lithography | 6 nm | 5 nm |
| Power consumption (TDP) | 53 Watt | 260 Watt |
RX 6400 has 390.6% lower power consumption.
RX 7900 GRE, on the other hand, has a 254.2% 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 7900 GRE is our recommended choice as it beats the Radeon RX 6400 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.
