AMD Radeon PRO W7900 vs NVIDIA GeForce RTX 4090 Comparison

AMD Radeon PRO W7900 and NVIDIA GeForce RTX 4090 are two very different GPUs aimed at different markets, yet they share a 5 nm TSMC process and PCIe 4.0 x16 interface. The recorded data shows a stark performance gap in the two common benchmark workloads where both cards were measured, but the story is more nuanced than raw scores alone. The Radeon PRO W7900 is a workstation card with 48 GB of memory and a triple-slot cooler, while the RTX 4090 is a consumer flagship with 24 GB of GDDR6X and a higher power envelope. This analysis compares their measured performance, architectural choices, and specification differences to clarify what each card offers.

Head-to-Head Benchmarks

The database contains two direct comparisons between these cards: Geekbench OpenCL and Geekbench Vulkan. In both cases, the NVIDIA GeForce RTX 4090 wins decisively. For OpenCL, the RTX 4090 scores 255,416 against the Radeon PRO W7900's 84,379, a difference of 67% in favor of NVIDIA. That is a massive gap, more than three times the AMD card's score. The Vulkan test narrows the margin somewhat but still favors NVIDIA heavily: the RTX 4090 reaches 271,631 while the Radeon PRO W7900 posts 137,070, putting NVIDIA 49.5% ahead. In both workloads, the RTX 4090 demonstrates roughly double the compute throughput of the W7900, which aligns with its higher shading unit count and FP32 rating.

However, the head-to-head table shows only two tests, and both are synthetic compute benchmarks. The Radeon PRO W7900 does not have a separate score in other common tests like 3DMark or PassMark, so the comparison is limited to these two API-level workloads. The RTX 4090's average benchmark score across all its recorded tests is 60,347, which is dragged down by low PassMark DirectX scores (150 to 397) that likely reflect driver or workload quirks, not real-world capability. The Radeon PRO W7900's average benchmark score is 110,725, a figure that comes from only its two Geekbench results. This discrepancy means the average scores are not directly comparable across different test suites, but the head-to-head numbers are the cleanest evidence we have.

The RTX 4090's 67% lead in OpenCL is particularly striking given the W7900's 48 GB memory advantage. Memory size does not help in compute-bound synthetic tests, where raw shader and tensor throughput dominate. The RTX 4090 has 16,384 shading units versus 6,144 on the W7900, and its FP32 performance is 82.58 TFLOPS against 61.32 TFLOPS. That 34.7% FP32 advantage explains part of the OpenCL gap, though the actual measured delta is larger, suggesting additional factors like driver optimization or memory bandwidth (the RTX 4090's 1.01 TB/s versus 864.0 GB/s) play a role. The Vulkan test shows a smaller gap of 49.5%, which may reflect better scaling on AMD's architecture for that API, but NVIDIA still wins clearly.

Where Each One Wins

The RTX 4090 wins in every measured benchmark, so the use-case split is not about compute performance but about capacity and feature sets. The Radeon PRO W7900 offers 48 GB of GDDR6 memory, double the RTX 4090's 24 GB of GDDR6X. For workloads that require loading very large datasets into VRAM, such as massive neural network training batches, high-resolution 3D rendering scenes, or scientific simulations with large grids, the W7900's capacity is a decisive advantage. The RTX 4090's 24 GB may be insufficient for some professional tasks, even though it is faster per GB.

The RTX 4090 wins in raw compute across both Geekbench tests, so any task that is purely arithmetic, like matrix multiplication or physics simulations, will favor NVIDIA. Its higher texture rate (1,290.2 GTexel/s versus 958.1 GTexel/s) and larger number of RT cores (128 versus 96) also suggest advantages in ray-traced rendering and texture-heavy workloads, though we do not have direct benchmarks for those. The RTX 4090's tensor cores (512 of them) give it a clear edge in AI inference and training, while the W7900 has no tensor core equivalent in the data.

For display connectivity, the W7900 offers three DisplayPort 2.1 outputs plus one mini-DisplayPort 2.1, whereas the RTX 4090 has one HDMI 2.1 and three DisplayPort 1.4a. If you need multiple high-bandwidth display outputs for a multi-monitor workstation setup, the W7900's DisplayPort 2.1 support is a practical win. The RTX 4090's HDMI 2.1 may be better for consumer TV or VR headsets, but that is not a compute benchmark advantage.

Power consumption also differs significantly: the W7900 has a 295 W TDP and uses two 8-pin connectors, while the RTX 4090 has a 450 W TDP and a single 16-pin connector. The suggested PSU is 600 W for AMD and 850 W for NVIDIA. In a workstation with many other components, the lower power draw of the W7900 could be a deciding factor, especially in multi-GPU configurations where total system power is a constraint.

The Verdict

The data shows that the NVIDIA GeForce RTX 4090 is the faster card in both head-to-head benchmarks. If your primary need is maximum compute throughput in OpenCL or Vulkan workloads, the RTX 4090 is the clear choice, with a 67% and 49.5% lead respectively. Its higher FP32 rating, more shading units, and larger memory bandwidth all support this outcome. The RTX 4090 also has a lower launch MSRP of 1,599 USD compared to the W7900's 3,999 USD, though the database does not provide current pricing information.

However, the Radeon PRO W7900 is not without merit. Its 48 GB memory is double the RTX 4090's 24 GB, and that capacity difference matters for specific professional workloads that exceed 24 GB. The W7900 also has a lower TDP (295 W versus 450 W), which reduces power supply requirements and heat output in dense workstations. Its DisplayPort 2.1 outputs are more modern than the RTX 4090's DisplayPort 1.4a, which could matter for next-generation displays.

Who should pick which? If you run AI training or inference, the RTX 4090's tensor cores and superior compute scores make it the obvious pick, provided your models fit in 24 GB. If you work with datasets or scenes that require more than 24 GB of VRAM, the W7900 is the only choice here, even though it is slower per compute unit. For general 3D rendering, the RTX 4090's higher texture rate and RT core count suggest better performance, but the W7900's memory headroom may be more valuable for very large scenes. The data cannot settle every use case, but for pure benchmark performance, NVIDIA wins both measured tests.

FAQ

Q: Which GPU has higher Geekbench OpenCL performance?

A: The NVIDIA GeForce RTX 4090 scores 255,416 in Geekbench OpenCL, while the AMD Radeon PRO W7900 scores 84,379. NVIDIA is 67% ahead.

Q: How does the Vulkan performance compare?

A: The RTX 4090 achieves 271,631 in Geekbench Vulkan, versus 137,070 for the Radeon PRO W7900, a 49.5% lead for NVIDIA.

Q: What is the memory capacity difference?

A: The AMD Radeon PRO W7900 has 48 GB of GDDR6 memory, while the NVIDIA GeForce RTX 4090 has 24 GB of GDDR6X. The W7900 offers double the capacity.

Q: Which card has a higher power consumption?

A: The RTX 4090 has a 450 W TDP and requires an 850 W suggested PSU, while the W7900 has a 295 W TDP and a 600 W suggested PSU.

Q: Are there any benchmark tests where the Radeon PRO W7900 wins?

A: In the recorded head-to-head data, the W7900 wins zero tests. The RTX 4090 wins both Geekbench OpenCL and Geekbench Vulkan.

Q: What is the transistor count difference?

A: The RTX 4090 has 76,300 million transistors on a 609 mm² die, while the W7900 has 57,700 million on a 529 mm² die. NVIDIA's chip is larger and denser.

Architecture Differences

The two GPUs come from different architectural families. The AMD Radeon PRO W7900 uses the Navi 31 chip based on RDNA 3.0 architecture, with the codename Plum Bonito. It belongs to the Radeon Pro Navi generation and its predecessor is the Radeon Pro Vega. The NVIDIA GeForce RTX 4090 uses the AD102 chip based on Ada Lovelace architecture, part of the GeForce 40 series, with a predecessor in GeForce 30 and a successor in GeForce 50. Both are built on a 5 nm TSMC process, but the RTX 4090 has a larger die (609 mm² versus 529 mm²) and more transistors (76,300 million versus 57,700 million), giving it a higher transistor density of 125.3M per mm² versus 109.1M per mm².

The compute resources differ sharply. The RTX 4090 has 16,384 shading units, 512 texture mapping units, 176 ROPs, 128 RT cores, and 512 tensor cores. The W7900 has 6,144 shading units, 384 TMUs, 192 ROPs, and 96 RT cores, with no tensor cores listed. This explains the RTX 4090's higher FP32 throughput of 82.58 TFLOPS versus 61.32 TFLOPS, and its higher texture rate of 1,290.2 GTexel/s versus 958.1 GTexel/s. The pixel rate is slightly higher on the W7900 (479.0 GPixel/s versus 443.5 GPixel/s) due to its 192 ROPs versus 176, a small advantage.

Memory architecture also differs. The W7900 uses 48 GB of GDDR6 on a 384-bit bus with 864.0 GB/s bandwidth, while the RTX 4090 uses 24 GB of GDDR6X on the same 384-bit bus but with 1.01 TB/s bandwidth. The GDDR6X memory is faster per pin, giving NVIDIA a bandwidth lead despite half the capacity. Clock speeds are higher on the RTX 4090 (base 2235 MHz, boost 2520 MHz) versus the W7900 (base 1760 MHz, boost 2495 MHz). The memory clock is also faster on NVIDIA (21 Gbps effective versus 18 Gbps effective).

Both cards support the same APIs: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Neither has a game-specific clock listed. The production status differs: the W7900 is Active, while the RTX 4090 is End-of-life. The RTX 4090 was released earlier (September 2022) than the W7900 (May 2023).

Specification Differences

The specification table shows clear differences in nearly every category. Memory size: 48 GB versus 24 GB. Memory type: GDDR6 versus GDDR6X. Bandwidth: 864.0 GB/s versus 1.01 TB/s. Shading units: 6,144 versus 16,384. TMUs: 384 versus 512. ROPs: 192 versus 176. RT cores: 96 versus 128. Tensor cores: none versus 512. FP32: 61.32 TFLOPS versus 82.58 TFLOPS. FP16: 61.32 TFLOPS versus 82.58 TFLOPS (both 1:1). Pixel rate: 479.0 GPixel/s versus 443.5 GPixel/s. Texture rate: 958.1 GTexel/s versus 1,290.2 GTexel/s. TDP: 295 W versus 450 W. Power connectors: 2x 8-pin versus 1x 16-pin. Suggested PSU: 600 W versus 850 W. Display outputs: 3x DisplayPort 2.1 plus 1x mini-DisplayPort 2.1 versus 1x HDMI 2.1 plus 3x DisplayPort 1.4a. Dimensions: the W7900 is 280 mm long, 110 mm tall, 51 mm wide, while the RTX 4090 is 304 mm long, 137 mm tall, 61 mm wide, making NVIDIA larger in all dimensions. Both are triple-slot cards and use PCIe 4.0 x16. The launch MSRP is 3,999 USD for AMD and 1,599 USD for NVIDIA, though the database does not track current street prices. The RTX 4090 has a higher base clock (2235 MHz versus 1760 MHz) and a slightly higher boost clock (2520 MHz versus 2495 MHz). The transistor count favors NVIDIA (76,300 million versus 57,700 million), as does die size (609 mm² versus 529 mm²). The RTX 4090 also has a higher percentile rank at 88 versus 94 for the W7900, though that percentile is relative to all GPUs and reflects different benchmark sets.