AMD Radeon PRO W7800 vs NVIDIA RTX A4500 Mobile Comparison

The Verdict

The data clearly separates these two workstation GPUs by class and intent. The AMD Radeon PRO W7800 is the decisive winner in every recorded benchmark, with a 46.6% lead in OpenCL and a 127.9% lead in Vulkan. It is a desktop card with active production status, a 260 W TDP, and a 97th percentile ranking across all GPUs. The NVIDIA RTX A4500 Mobile is an end-of-life mobile part, drawing 140 W, ranking in the 93rd percentile, and averaging a much lower benchmark score.

Pick the AMD Radeon PRO W7800 if you need maximum compute throughput in a fixed workstation, if your software scales well with raw FP32 and FP16 performance, or if you need 32 GB of VRAM. The data shows it outperforms the RTX A4500 Mobile in both OpenCL and Vulkan by a wide margin, and it also edges out several desktop rivals like the NVIDIA RTX A5500 and RTX 4500 Ada Generation in average score. Pick the NVIDIA RTX A4500 Mobile only if your use case requires a portable workstation, since its dimensions are listed as portable-device dependent and it has no dedicated power connectors. Within that mobile niche, it is still a strong part, but against this desktop AMD card, it is not competitive on raw numbers.

Architecture Differences

The two GPUs come from different design philosophies. The AMD Radeon PRO W7800 uses the Navi 31 chip on the RDNA 3.0 architecture, built on a 5 nm process at TSMC. It packs 57,700 million transistors on a 529 mm² die, giving a transistor density of 109.1M per mm². The NVIDIA RTX A4500 Mobile uses the GA104 chip on the older Ampere architecture, fabricated on an 8 nm process at Samsung. That die holds 17,400 million transistors across 392 mm², with a density of 44.4M per mm². The process advantage is clear: AMD fits more than three times the transistors into a die that is only about 35% larger.

The compute layout differs substantially. AMD fields 4480 shading units, 280 texture mapping units, 128 ROPs, and 70 ray tracing cores. NVIDIA counters with 5888 shading units, 184 TMUs, 96 ROPs, 46 RT cores, and 184 tensor cores. The AMD card has no tensor core field, while the NVIDIA card includes dedicated tensor hardware. Clock speeds also diverge sharply: the AMD card runs at a base of 1895 MHz and boosts to 2525 MHz, while the NVIDIA mobile chip sits at a much lower 930 MHz base and 1500 MHz boost. That clock gap helps explain why the AMD card reaches 45.25 TFLOPS FP32 versus 17.66 TFLOPS for NVIDIA, and 90.50 TFLOPS FP16 (2:1 ratio) versus 17.66 TFLOPS FP16 (1:1 ratio) for the mobile part.

Memory systems differ too. The AMD card uses 32 GB of GDDR6 on a 256-bit bus, delivering 576.0 GB/s bandwidth. The NVIDIA card has 16 GB of GDDR6 on the same 256-bit bus, but at 512.0 GB/s. Both support PCIe 4.0 x16 and the same API feature set: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Display outputs diverge as well; the desktop AMD card provides three DisplayPort 2.1 and one mini-DisplayPort 2.1, while the mobile NVIDIA card's outputs are listed as portable-device dependent.

Where Each One Wins

The AMD Radeon PRO W7800 wins every recorded head-to-head test. In Geekbench OpenCL, it scores 154366 against 105307 for the RTX A4500 Mobile, a difference of 46.6%. In Geekbench Vulkan, the gap is even larger: 175422 versus 76960, a 127.9% advantage. The AMD card's average benchmark score across all recorded tests is 164894, while the NVIDIA mobile part averages 91134. That is a 73,760-point average gap, or roughly an 81% higher average score for the AMD card.

The NVIDIA RTX A4500 Mobile does have one structural advantage: it is a mobile part. Its TDP is 140 W versus 260 W for the desktop AMD card, and it requires no power connectors. That makes it feasible for laptop implementations, which is the only context where it makes sense. The AMD card is a dual-slot desktop card measuring 280 mm in length, 110 mm in height, and 40 mm in width, requiring two 8-pin power connectors and a 600 W suggested PSU. The NVIDIA card has no listed slot width, dimensions, or PSU recommendation, consistent with a mobile design.

For compute workloads where FP32 or FP16 throughput matters, the AMD card is the clear pick. For OpenCL and Vulkan specifically, the recorded data gives AMD a decisive edge. The NVIDIA card's tensor cores might appeal to workloads that use them, but the benchmark data provided does not show any test where that translates into a win.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon PRO W7800 averages 164894 across all recorded benchmarks, while the NVIDIA RTX A4500 Mobile averages 91134. The AMD card sits in the 97th percentile of all GPUs, the NVIDIA card in the 93rd.

Q: How much faster is the AMD card in OpenCL?

A: The AMD Radeon PRO W7800 scores 154366 in Geekbench OpenCL, while the NVIDIA RTX A4500 Mobile scores 105307. That is a 46.6% lead for AMD.

Q: Is the NVIDIA card competitive in Vulkan?

A: No. The AMD card scores 175422 in Geekbench Vulkan versus 76960 for the NVIDIA mobile part. That is a 127.9% advantage for AMD, the largest gap in any recorded test.

Q: Can the NVIDIA RTX A4500 Mobile be used in a desktop workstation?

A: The data lists it as a mobile part with no dimensions, no slot width, no power connectors, and display outputs that are portable-device dependent. Its production status is end-of-life, with a successor listed as Ada-MW. It is designed for laptops, not desktop towers.

Q: Which card has more memory and bandwidth?

A: The AMD Radeon PRO W7800 has 32 GB of GDDR6 with 576.0 GB/s bandwidth. The NVIDIA RTX A4500 Mobile has 16 GB of GDDR6 with 512.0 GB/s. Both use a 256-bit bus.

Q: How do the two cards compare in transistor count and process node?

A: The AMD card uses 57,700 million transistors on a 5 nm TSMC process. The NVIDIA card uses 17,400 million transistors on an 8 nm Samsung process. The AMD die is 529 mm² versus 392 mm² for NVIDIA.

Head-to-Head Benchmarks

The only two direct comparisons in the database are Geekbench OpenCL and Geekbench Vulkan, and AMD wins both. In OpenCL, the AMD Radeon PRO W7800 posts 154366 points. The NVIDIA RTX A4500 Mobile posts 105307 points. The delta is 46.6%, meaning the AMD card is nearly half again as fast in that workload. In Vulkan, the AMD card reaches 175422 points, while the mobile NVIDIA part trails far behind at 76960 points. That 127.9% delta is the standout number in this comparison; it shows the AMD card more than doubling the NVIDIA mobile score in a modern graphics API.

Context from the nearest rivals reinforces the AMD card's position. The W7800's average score of 164894 puts it just 0.2% behind the NVIDIA RTX A5500 (165217), 0.7% behind the RTX 4500 Ada Generation (166094), 1.5% ahead of the NVIDIA A100 PCIe 40 GB (162504), and 2.2% behind the AMD Radeon Pro W6900X (168574). That is a tight cluster of high-end desktop parts, and the W7800 sits comfortably within it. The RTX A4500 Mobile, by contrast, averages 91134, which is 0.6% behind the desktop NVIDIA RTX A4500 (91671), 1.4% behind the AMD Radeon Instinct MI60 (92466), 4.2% ahead of the NVIDIA Quadro GP100 (87445), and 4.6% ahead of the AMD Radeon PRO W7600 (87108). The mobile part competes with a lower tier of workstation hardware, despite having more shading units than the AMD desktop card.

The practical takeaway from the numbers is that the AMD card is not just faster, it is in a different performance class. A 46.6% OpenCL win is decisive for compute tasks that use that API. A 127.9% Vulkan win suggests the AMD architecture's higher clock speeds and larger memory bandwidth translate strongly into graphics workloads. The NVIDIA mobile card's higher shading unit count (5888 versus 4480) does not compensate for its much lower clocks and older architecture.

Specification Differences

The two cards differ in nearly every specification that matters for performance. The AMD Radeon PRO W7800 uses the Navi 31 chip with RDNA 3.0 architecture, while the NVIDIA RTX A4500 Mobile uses GA104 with Ampere. The process node is 5 nm for AMD versus 8 nm for NVIDIA. Transistor counts are 57,700 million versus 17,400 million, and die sizes are 529 mm² versus 392 mm². Transistor density is 109.1M per mm² for AMD versus 44.4M per mm² for NVIDIA.

Clock speeds show a large divergence. AMD runs at 1895 MHz base and 2525 MHz boost. NVIDIA runs at 930 MHz base and 1500 MHz boost. Memory clocks are 2250 MHz (18 Gbps effective) for AMD versus 2000 MHz (16 Gbps effective) for NVIDIA. Memory capacity is 32 GB versus 16 GB, both GDDR6 on a 256-bit bus, but AMD's bandwidth is 576.0 GB/s versus 512.0 GB/s.

Compute units differ in composition. AMD has 4480 shading units, 280 TMUs, 128 ROPs, and 70 RT cores. NVIDIA has 5888 shading units, 184 TMUs, 96 ROPs, 46 RT cores, and 184 tensor cores. AMD's pixel rate is 323.2 GPixel/s versus 144.0 GPixel/s for NVIDIA. Texture rate is 707.0 GTexel/s versus 276.0 GTexel/s. FP32 performance is 45.25 TFLOPS versus 17.66 TFLOPS. FP16 performance is 90.50 TFLOPS (2:1) versus 17.66 TFLOPS (1:1).

Power and physical design differ as expected for desktop versus mobile. AMD has a 260 W TDP, a dual-slot form factor, two 8-pin power connectors, and a 600 W suggested PSU. It measures 280 mm by 110 mm by 40 mm. NVIDIA has a 140 W TDP, no listed power connectors, no slot width, and no dimensions. The AMD card's display outputs are three DisplayPort 2.1 plus one mini-DisplayPort 2.1; the NVIDIA card's outputs are portable-device dependent. The AMD card is listed as active production, released 2023-04-12, with a predecessor of Radeon Pro Vega and a launch MSRP of 2,499 USD. The NVIDIA card is end-of-life, released 2022-03-21, with a predecessor of Quadro Turing-M and a successor of Ada-MW. Both use PCIe 4.0 x16 and support the same DirectX, OpenGL, and Vulkan versions.