AMD Radeon RX 7400 OEM vs NVIDIA Rubin GPU Comparison

Head-to-Head Benchmarks

The recorded data contains no direct head-to-head benchmark scores for the AMD Radeon RX 7400 OEM and the NVIDIA Rubin GPU. Neither device has entries in the benchmark results database, and both hold identical percentile positions at 50th among all GPUs. With zero wins recorded for either part, the comparative performance picture must be assembled from the architectural and specification data available in the database.

The most decisive difference appears in raw compute throughput. The NVIDIA Rubin GPU delivers 130.0 TFLOPS of FP32 performance, while the AMD Radeon RX 7400 OEM produces 7.885 TFLOPS. That represents a 16.5 times advantage for the NVIDIA part in single-precision floating point work. The gap widens further in FP16 operations, where the Rubin GPU reaches 260.0 TFLOPS thanks to a 2:1 ratio, while the AMD card maintains 7.885 TFLOPS at a 1:1 ratio, giving NVIDIA a 33.0 times lead.

Memory bandwidth tells a similar story. The NVIDIA Rubin GPU accesses 288 GB of HBM4 memory across a 16384 bit bus, yielding 22.1 TB/s of bandwidth. The AMD Radeon RX 7400 OEM uses 8 GB of GDDR6 on a 128 bit bus for 172.8 GB/s. The Rubin GPU therefore delivers roughly 128 times more memory bandwidth. Texture throughput also favors NVIDIA heavily, with 2,031.2 GTexel/s against 123.2 GTexel/s, a 16.5 times margin. Pixel rate is the one metric where AMD leads: 70.40 GPixel/s versus 54.41 GPixel/s, an advantage of about 29 percent, driven by the AMD card's 64 ROPs compared to 24 ROPs on the NVIDIA part.

Transistor resources are equally lopsided. The Rubin GPU packs 336,000 million transistors on a 1456 mm² die, while the Radeon RX 7400 OEM contains 13,300 million transistors on 204 mm². That is a 25.3 times difference in transistor count. The process nodes differ as well, with AMD using a 6 nm TSMC process and NVIDIA using a 3 nm TSMC process. Transistor density reflects this: 230.8M per mm² for NVIDIA versus 65.2M per mm² for AMD.

The Verdict

The database shows two devices aimed at entirely different segments. The AMD Radeon RX 7400 OEM is a single-slot, 55 W card with a 250 W suggested PSU, PCIe 4.0 x8 interface, and display outputs including 1x HDMI 2.1a and 3x DisplayPort 2.1. The NVIDIA Rubin GPU is an SXM module with a 2300 W TDP, a 2700 W suggested PSU, PCIe 6.0 x16 connectivity, and no display outputs. These are not competing products in any conventional sense.

For rendering frames to a screen, the data points to the AMD card. It has the higher pixel rate at 70.40 GPixel/s, the only performance metric where it leads, and it includes display outputs and DirectX 12 Ultimate support with a 12_2 feature level. The NVIDIA Rubin GPU offers no display outputs and lists N/A for DirectX, OpenGL, and Vulkan APIs, marking it as a compute or server accelerator rather than a graphics card.

For compute workloads, the NVIDIA Rubin GPU dominates every relevant metric. Its FP32 output of 130.0 TFLOPS, FP16 output of 260.0 TFLOPS, 896 tensor cores, and 22.1 TB/s of memory bandwidth place it in a different performance class entirely. The AMD card has 1792 shading units and 28 RT cores, while the NVIDIA part has 28,672 shading units and 896 tensor cores. The verdict from the data is straightforward: the AMD Radeon RX 7400 OEM serves client graphics duties, and the NVIDIA Rubin GPU serves server-scale parallel compute.

Architecture Differences

The two devices share a foundry, TSMC, but diverge on every other architectural axis. AMD builds the Radeon RX 7400 OEM on a 6 nm process with the Navi 33 chip, codenamed Hotpink Bonefish, from the RDNA 3.0 architecture in the Navi III (RX 7000) generation. NVIDIA builds the Rubin GPU on a 3 nm process with the GR100 chip from the Rubin architecture in the Server Rubin (Rxx) generation.

Clocks differ substantially. The AMD card runs at a 330 MHz base and 1100 MHz boost, while the NVIDIA part runs at 700 MHz base and 2267 MHz boost. Memory clocks show a narrower gap: 1350 MHz for AMD versus 2695 MHz for NVIDIA, though both achieve the same 10.8 Gbps effective data rate. Memory type and bus width separate them completely, with GDDR6 on 128 bit for AMD and HBM4 on 16384 bit for NVIDIA.

The compute resources reflect their different design goals. AMD configures 1792 shading units, 112 TMUs, 64 ROPs, and 28 RT cores, with no tensor cores listed. NVIDIA configures 28,672 shading units, 896 TMUs, 24 ROPs, and 896 tensor cores, with no dedicated RT core count listed. The AMD card supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The NVIDIA part lists N/A for all three graphics APIs, consistent with its lack of display outputs.

Physical and power characteristics also diverge. AMD specifies a 55 W TDP, a single-slot form factor, a 1x 6-pin power connector, and a 167 mm length (6.6 inches). NVIDIA specifies a 2300 W TDP, an SXM Module form factor, no power connector listing, and no dimensions. The AMD card uses a PCIe 4.0 x8 bus interface; the NVIDIA module uses PCIe 6.0 x16. In the database's product lineage, AMD lists the Radeon RX 7400 OEM as a successor to Navi II and predecessor to Navi IV, while NVIDIA lists the Rubin GPU as a successor to Server Blackwell with no successor recorded.

FAQ

Q: Which GPU has more shading units?

A: The NVIDIA Rubin GPU has 28,672 shading units, compared to 1,792 on the AMD Radeon RX 7400 OEM.

Q: What are the FP32 performance figures for each card?

A: The NVIDIA Rubin GPU delivers 130.0 TFLOPS of FP32 performance. The AMD Radeon RX 7400 OEM delivers 7.885 TFLOPS.

Q: How much memory does each GPU have and what type?

A: The AMD Radeon RX 7400 OEM has 8 GB of GDDR6 memory. The NVIDIA Rubin GPU has 288 GB of HBM4 memory.

Q: Which GPU supports DirectX 12 Ultimate?

A: The AMD Radeon RX 7400 OEM supports DirectX 12 Ultimate with a 12_2 feature level. The NVIDIA Rubin GPU lists N/A for DirectX support.

Q: What is the power consumption of each device?

A: The AMD Radeon RX 7400 OEM has a 55 W TDP with a 250 W suggested PSU. The NVIDIA Rubin GPU has a 2300 W TDP with a 2700 W suggested PSU.

Q: Does the NVIDIA Rubin GPU have display outputs?

A: No, the NVIDIA Rubin GPU has no display outputs. The AMD Radeon RX 7400 OEM includes 1x HDMI 2.1a and 3x DisplayPort 2.1.

Where Each One Wins

The AMD Radeon RX 7400 OEM wins in client-side graphics metrics. Its pixel rate of 70.40 GPixel/s exceeds the NVIDIA part's 54.41 GPixel/s, and its 64 ROPs provide more rasterization throughput. It is the only device of the two with display outputs, making it suitable for driving monitors. Its graphics API support, including DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, confirms a client rendering role. The 55 W TDP and single-slot design also make it a low-power, compact option relative to the NVIDIA module.

The NVIDIA Rubin GPU wins in every computational scale metric. Its FP32 output of 130.0 TFLOPS is 16.5 times the AMD card's 7.885 TFLOPS. Its FP16 output of 260.0 TFLOPS is 33.0 times the AMD card's 7.885 TFLOPS. Memory bandwidth of 22.1 TB/s exceeds the AMD card's 172.8 GB/s by a factor of about 128. Texture rate of 2,031.2 GTexel/s beats 123.2 GTexel/s by 16.5 times. The 896 tensor cores give it a dedicated matrix compute path that the AMD card lacks entirely.

The remaining categories are not competitive but structural. The NVIDIA Rubin GPU uses a 3 nm process with 336,000 million transistors, while the AMD Radeon RX 7400 OEM uses a 6 nm process with 13,300 million transistors. The NVIDIA part's 288 GB of HBM4 memory dwarfs the AMD card's 8 GB of GDDR6. The database records equal 50th percentiles for both devices and no benchmark scores, so the split between the two is defined entirely by their specifications: the AMD card wins where graphics output and rasterization matter, and the NVIDIA module wins where compute scale, memory capacity, and tensor throughput dominate.