AMD Radeon RX 7400 OEM vs NVIDIA RTX A400 Comparison

Q: What are the core specifications of the AMD Radeon RX 7400 OEM and the NVIDIA RTX A400?

A: The AMD Radeon RX 7400 OEM uses the Navi 33 chip on a 6 nm TSMC process with 13,300 million transistors on a 204 mm² die. It features 1792 shading units, 112 TMUs, 64 ROPs, and 28 RT cores. The NVIDIA RTX A400 uses the GA107 chip on an 8 nm Samsung process with 8,700 million transistors on a 200 mm² die, featuring 768 shading units, 24 TMUs, 16 ROPs, and 6 RT cores.

Q: How do the memory subsystems compare between the two cards?

A: The AMD card offers 8 GB of GDDR6 memory on a 128-bit bus with 172.8 GB/s bandwidth. The NVIDIA card provides 4 GB of GDDR6 memory on a 64-bit bus with 96.00 GB/s bandwidth.

Q: What are the power requirements for each card?

A: The AMD Radeon RX 7400 OEM has a TDP of 55 W and requires a single 6-pin power connector. The NVIDIA RTX A400 has a TDP of 50 W and requires no power connectors. Both cards suggest a 250 W power supply.

Q: What display outputs do these cards provide?

A: The AMD card includes 1x HDMI 2.1a and 3x DisplayPort 2.1 outputs. The NVIDIA card provides 4x mini-DisplayPort 1.4a outputs.

Q: Which card has a higher percentile ranking among all GPUs?

A: The AMD Radeon RX 7400 OEM sits at the 50th percentile, while the NVIDIA RTX A400 sits at the 35th percentile.

Q: What are the release dates for both products?

A: The AMD Radeon RX 7400 OEM was released on 2025-08-07, and the NVIDIA RTX A400 was released on 2024-04-15.

The Verdict

The data presents a clear split: the AMD Radeon RX 7400 OEM is the more powerful card on paper, with substantially higher raw compute, memory capacity, and bandwidth. The NVIDIA RTX A400, however, is a workstation-specific product with a different feature set and a lower power draw.

For a user prioritizing raw performance, memory capacity, and modern display outputs, the AMD Radeon RX 7400 OEM is the logical choice. Its 8 GB memory and 172.8 GB/s bandwidth double the A400's 4 GB and 96.00 GB/s respectively, and its FP32 compute of 7.885 TFLOPS is nearly three times the A400's 2.706 TFLOPS.

For a user needing a low-power, slot-powered card with multiple mini-DisplayPort outputs for professional display configurations, the NVIDIA RTX A400 offers a different value proposition. It draws 50 W with no power connector, runs at a higher base clock of 1417 MHz versus 330 MHz, and includes 24 tensor cores, which the AMD card lacks entirely.

Head-to-Head Benchmarks

The database contains benchmark results only for the NVIDIA RTX A400, with no recorded scores for the AMD Radeon RX 7400 OEM. The A400's recorded data shows an average benchmark score of 6078, placing it at the 35th percentile.

In the recorded tests, the RTX A400 posts a Geekbench OpenCL score of 22844 and a Geekbench Vulkan score of 22237. Its Passmark scores are more modest: 32 in DirectX 10, 37 in DirectX 11, 27 in DirectX 12, and 87 in DirectX 9. The G2D score is 899, the G3D score is 5983, and the GPU compute score is 2557.

The nearest rivals for the RTX A400, based on average scores, include the NVIDIA GeForce MX230 with an average score of 6077 (a delta of 0%), the NVIDIA Quadro P2000 with 6049 (0.5% slower), the Intel Iris Pro Graphics 6200 with 6117 (0.6% faster), and the AMD Radeon 760M with 6019 (1% slower). These figures show the A400 performs in a tight band around these competitors, with no single rival more than 1% away.

Specification Differences

The two cards differ across almost every major specification category. The AMD Radeon RX 7400 OEM uses a 6 nm process from TSMC, while the NVIDIA RTX A400 uses an 8 nm process from Samsung. The AMD chip contains 13,300 million transistors, compared to 8,700 million for NVIDIA, and the die sizes are close at 204 mm² versus 200 mm², giving AMD a transistor density of 65.2M per mm² versus NVIDIA's 43.5M per mm².

Clock speeds show a significant contrast. The AMD card runs at a base clock of 330 MHz and boosts to 1100 MHz. The NVIDIA card runs at a base clock of 1417 MHz and boosts to 1762 MHz. Memory clocks also differ: AMD uses 1350 MHz (10.8 Gbps effective), while NVIDIA uses 1500 MHz (12 Gbps effective).

Compute resources are heavily skewed toward AMD. The AMD card has 1792 shading units, 112 TMUs, and 64 ROPs. The NVIDIA card has 768 shading units, 24 TMUs, and 16 ROPs. The AMD card has 28 RT cores, while the NVIDIA card has 6 RT cores plus 24 tensor cores.

Pixel and texture rates follow the same pattern. AMD delivers 70.40 GPixel/s and 123.2 GTexel/s. NVIDIA delivers 28.19 GPixel/s and 42.29 GTexel/s. FP32 and FP16 performance are both 7.885 TFLOPS for AMD, versus 2.706 TFLOPS for NVIDIA in both formats.

Memory capacity and bandwidth differ sharply. AMD offers 8 GB of GDDR6 on a 128-bit bus with 172.8 GB/s. NVIDIA offers 4 GB of GDDR6 on a 64-bit bus with 96.00 GB/s.

Power and physical characteristics also vary. AMD has a 55 W TDP with a 6-pin power connector. NVIDIA has a 50 W TDP with no power connector. Both are single-slot cards, with AMD measuring 167 mm in length and NVIDIA measuring 163 mm by 69 mm. The AMD card is 6.6 inches long, while the NVIDIA card is 6.4 inches long.

Architecture Differences

The AMD Radeon RX 7400 OEM is built on the RDNA 3.0 architecture, specifically the Navi 33 chip codenamed Hotpink Bonefish. It belongs to the Navi III (RX 7000) generation, succeeding Navi II and preceding Navi IV. The NVIDIA RTX A400 is built on the Ampere architecture using the GA107 chip, belonging to the Workstation Ampere (Ax000) generation, succeeding Quadro Turing and preceding Workstation Ada.

The manufacturing processes differ fundamentally. AMD uses a 6 nm TSMC process, while NVIDIA uses an 8 nm Samsung process. This contributes to AMD's higher transistor density of 65.2M per mm² versus NVIDIA's 43.5M per mm².

Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD card features 28 RT cores and no tensor cores. The NVIDIA card features 6 RT cores and 24 tensor cores, providing dedicated tensor hardware that the AMD card does not include.

The memory architectures differ in both size and bandwidth. The AMD card uses a 128-bit memory bus, while the NVIDIA card uses a 64-bit bus. This is a structural difference, not just a capacity difference, affecting how each card handles memory-intensive workloads.

Display output configurations are distinct. The AMD card provides 1x HDMI 2.1a and 3x DisplayPort 2.1. The NVIDIA card provides 4x mini-DisplayPort 1.4a. The AMD card uses the newer DisplayPort standard, while the NVIDIA card offers more physical display outputs.

Where Each One Wins

The AMD Radeon RX 7400 OEM wins decisively in raw compute and memory bandwidth. Its FP32 performance of 7.885 TFLOPS is 2.9 times the A400's 2.706 TFLOPS. Its pixel rate of 70.40 GPixel/s is 2.5 times the A400's 28.19 GPixel/s, and its texture rate of 123.2 GTexel/s is 2.9 times the A400's 42.29 GTexel/s.

The AMD card also wins on memory capacity and bandwidth, offering 8 GB versus 4 GB and 172.8 GB/s versus 96.00 GB/s. This gives it a clear advantage in scenarios requiring larger textures or datasets. Its 28 RT cores versus 6 RT cores suggests stronger ray tracing capability, though the database lacks direct benchmark comparisons for this workload.

The NVIDIA RTX A400 wins on power efficiency and physical flexibility. Its 50 W TDP is lower than the AMD card's 55 W, and it requires no power connector, allowing installation in systems without auxiliary power headers. Its higher base clock of 1417 MHz versus 330 MHz and boost clock of 1762 MHz versus 1100 MHz indicate a different operating profile, though the AMD card's larger compute array compensates in throughput.

The NVIDIA card also includes 24 tensor cores, a feature absent from the AMD card. This gives it a potential advantage in workloads that use tensor operations, such as certain AI or compute tasks. The A400's 4x mini-DisplayPort 1.4a outputs may suit multi-display professional setups better than AMD's 3x DisplayPort 2.1 plus 1x HDMI 2.1a configuration, depending on the display hardware in use.

The recorded benchmark data for the RTX A400 shows it competes closely with the NVIDIA GeForce MX230 (0% delta), the NVIDIA Quadro P2000 (0.5% faster), the Intel Iris Pro Graphics 6200 (0.6% slower), and the AMD Radeon 760M (1% faster). This places the A400 in a narrow performance band, suggesting its strengths lie more in specific workstation features than in outright speed. The AMD Radeon RX 7400 OEM, with its 50th percentile ranking versus the A400's 35th, holds a higher position in the overall GPU distribution.