AMD Radeon RX 7900 GRE vs NVIDIA RTX A500 Mobile Comparison

Where Each One Wins

The recorded data splits these two GPUs into entirely different performance classes, with the AMD Radeon RX 7900 GRE winning every benchmark in the head-to-head comparison. The NVIDIA RTX A500 Mobile does not claim a single win across the two shared tests. In Geekbench OpenCL, the AMD part scores 175,758 against 41,263 for the NVIDIA, a delta of 76.5% in favor of AMD. In Geekbench Vulkan, the margin narrows somewhat but remains decisive: AMD scores 99,850 versus 37,873 for NVIDIA, a 62.1% advantage.

The use-case split is clear from the numbers. The AMD Radeon RX 7900 GRE is the choice for compute-heavy workloads where OpenCL performance matters, and for graphics workloads that leverage Vulkan. Its average benchmark score of 32,456 places it in the 77th percentile of all GPUs in the database. The NVIDIA RTX A500 Mobile, by contrast, has an average benchmark score of 39,568 and sits in the 82nd percentile, but that percentile reflects a different competitive neighborhood. The NVIDIA part's nearest rivals are professional mobile and workstation cards: the AMD Radeon Pro 575 at 39,555, the AMD Radeon Pro 575X at 39,116, and the AMD Radeon Pro WX 7100 at 40,063. The AMD RX 7900 GRE competes against a very different set, including the AMD FirePro S10000 at 32,388 and the AMD Radeon RX 590 GME at 32,601.

For users prioritizing raw compute throughput, the RX 7900 GRE is the clear winner. Its FP32 throughput of 45.98 TFLOPS dwarfs the NVIDIA part's 6.296 TFLOPS, and its FP16 output reaches 91.96 TFLOPS versus 6.296 TFLOPS on the A500 Mobile. The AMD card also carries 16 GB of GDDR6 memory on a 256-bit bus, delivering 576.0 GB/s of bandwidth, compared to 4 GB on a 64-bit bus with 96.00 GB/s for the NVIDIA. The NVIDIA part is not without its own strengths: it is an integrated form factor (IGP) with a 30 W TDP, making it suitable for portable, power-constrained systems. The AMD card requires a 600 W suggested PSU and dual-slot cooling, so it is not a mobile solution.

Architecture Differences

The two GPUs come from different architectural generations and foundries. The NVIDIA RTX A500 Mobile is built on the Ampere architecture, using the GA107S chip fabricated by Samsung on an 8 nm process. It integrates 8,700 million transistors on a 200 mm² die, yielding a transistor density of 43.5 million per square millimeter. The AMD Radeon RX 7900 GRE uses the RDNA 3.0 architecture with the Navi 31 chip (codename "Plum Bonito"), manufactured by TSMC on a 5 nm node. That chip packs 57,700 million transistors into a 529 mm² die, a density of 109.1 million per square millimeter.

The compute resources differ massively. The AMD card has 5,120 shading units, 320 texture mapping units, and 160 render output units. The NVIDIA part has 2,048 shading units, 64 TMUs, and 32 ROPs. For ray tracing, the AMD card includes 80 RT cores while the NVIDIA part has 16. Tensor cores are present only on the NVIDIA side, with 64 of them, while the AMD card lists none. This is a meaningful feature split: the NVIDIA part can accelerate tensor workloads, while the AMD card does not have a dedicated tensor core count in the database.

Memory architecture is another major differentiator. The NVIDIA RTX A500 Mobile uses 4 GB of GDDR6 on a 64-bit bus with a memory clock of 1500 MHz (12 Gbps effective), yielding 96.00 GB/s of bandwidth. The AMD Radeon RX 7900 GRE uses 16 GB of GDDR6 on a 256-bit bus with a memory clock of 2250 MHz (18 Gbps effective), producing 576.0 GB/s. That is six times the bandwidth of the NVIDIA part.

Clock behavior also differs. The NVIDIA GPU has a base clock of 832 MHz and a boost clock of 1537 MHz. The AMD card runs a base clock of 1287 MHz, a game clock of 1880 MHz, and a boost clock of 2245 MHz. The NVIDIA part's FP16 performance is listed as 6.296 TFLOPS at a 1:1 ratio to FP32, while the AMD card achieves 91.96 TFLOPS FP16 at a 2:1 ratio, indicating a different execution model for half-precision work.

Power and physical requirements separate the two completely. The NVIDIA RTX A500 Mobile is rated at 30 W TDP with no power connectors and an IGP slot width, designed for portable devices. The AMD Radeon RX 7900 GRE has a 260 W TDP, requires two 8-pin power connectors, a 600 W suggested PSU, and occupies a dual-slot form factor with dimensions of 276 mm length, 110 mm height, and 51 mm width. The NVIDIA part's display outputs are portable-device dependent, while the AMD card offers 1x HDMI 2.1a, 2x DisplayPort 2.1, and 1x USB Type-C.

FAQ

Q: Which GPU is faster in OpenCL compute workloads?

A: The AMD Radeon RX 7900 GRE is significantly faster. It scores 175,758 in Geekbench OpenCL, while the NVIDIA RTX A500 Mobile scores 41,263, a 76.5% difference in favor of AMD.

Q: Does the NVIDIA RTX A500 Mobile have any benchmark advantage over the AMD card?

A: No. In the two head-to-head benchmarks recorded (Geekbench OpenCL and Geekbench Vulkan), the AMD Radeon RX 7900 GRE wins both. The NVIDIA part records zero wins in the head-to-head comparison.

Q: What is the memory capacity and bandwidth difference?

A: The NVIDIA RTX A500 Mobile has 4 GB of GDDR6 on a 64-bit bus with 96.00 GB/s bandwidth. The AMD Radeon RX 7900 GRE has 16 GB of GDDR6 on a 256-bit bus with 576.0 GB/s bandwidth.

Q: Which GPU has tensor cores?

A: The NVIDIA RTX A500 Mobile includes 64 tensor cores. The AMD Radeon RX 7900 GRE does not have tensor cores listed in the database.

Q: What are the power requirements for each card?

A: The NVIDIA RTX A500 Mobile has a 30 W TDP and uses no power connectors. The AMD Radeon RX 7900 GRE has a 260 W TDP, requires two 8-pin power connectors, and a 600 W suggested PSU.

Q: How do their production statuses compare?

A: The NVIDIA RTX A500 Mobile is end-of-life, with a release date of March 2022. The AMD Radeon RX 7900 GRE is active, with a release date of July 2023.

Specification Differences

The following fields differ between the two GPUs in the database:

• Architecture: NVIDIA uses Ampere; AMD uses RDNA 3.0.
• Process node: NVIDIA is on 8 nm (Samsung); AMD is on 5 nm (TSMC).
• Transistors: NVIDIA has 8,700 million; AMD has 57,700 million.
• Die size: NVIDIA is 200 mm²; AMD is 529 mm².
• Transistor density: NVIDIA has 43.5M/mm²; AMD has 109.1M/mm².
• Base clock: NVIDIA is 832 MHz; AMD is 1287 MHz.
• Boost clock: NVIDIA is 1537 MHz; AMD is 2245 MHz.
• Game clock: NVIDIA has none; AMD is 1880 MHz.
• Memory clock: NVIDIA is 1500 MHz (12 Gbps effective); AMD is 2250 MHz (18 Gbps effective).
• Memory size: NVIDIA is 4 GB; AMD is 16 GB.
• Memory bus width: NVIDIA is 64-bit; AMD is 256-bit.
• Memory bandwidth: NVIDIA is 96.00 GB/s; AMD is 576.0 GB/s.
• Shading units: NVIDIA has 2,048; AMD has 5,120.
• TMUs: NVIDIA has 64; AMD has 320.
• ROPs: NVIDIA has 32; AMD has 160.
• RT cores: NVIDIA has 16; AMD has 80.
• Tensor cores: NVIDIA has 64; AMD has none.
• Pixel rate: NVIDIA is 49.18 GPixel/s; AMD is 359.2 GPixel/s.
• Texture rate: NVIDIA is 98.37 GTexel/s; AMD is 718.4 GTexel/s.
• FP32: NVIDIA is 6.296 TFLOPS; AMD is 45.98 TFLOPS.
• FP16: NVIDIA is 6.296 TFLOPS (1:1); AMD is 91.96 TFLOPS (2:1).
• TDP: NVIDIA is 30 W; AMD is 260 W.
• Slot width: NVIDIA is IGP; AMD is dual-slot.
• Power connectors: NVIDIA has none; AMD has 2x 8-pin.
• Suggested PSU: NVIDIA has none; AMD is 600 W.
• Bus interface: NVIDIA is PCIe 4.0 x8; AMD is PCIe 4.0 x16.
• Display outputs: NVIDIA is portable-device dependent; AMD is 1x HDMI 2.1a, 2x DisplayPort 2.1, 1x USB Type-C.
• Dimensions: NVIDIA has none listed; AMD is 276 mm x 110 mm x 51 mm.
• Production status: NVIDIA is end-of-life; AMD is active.
• Release date: NVIDIA is March 2022; AMD is July 2023.
• Predecessor: NVIDIA is Quadro Turing-M; AMD is Navi II.
• Successor: NVIDIA is Ada-MW; AMD is Navi IV.
• Launch MSRP: NVIDIA has none; AMD is 549 USD.

Head-to-Head Benchmarks

The two shared benchmarks tell a consistent story of AMD dominance, but the margins deserve attention. In Geekbench OpenCL, the AMD Radeon RX 7900 GRE scores 175,758 against 41,263 for the NVIDIA RTX A500 Mobile. That is a 76.5% gap, the largest in the head-to-head set. The OpenCL test stresses general compute, and the AMD card's 5,120 shading units and 45.98 TFLOPS FP32 throughput translate directly into a massive advantage in this workload.

The Geekbench Vulkan result shows a narrower but still decisive gap. The AMD card scores 99,850, while the NVIDIA part scores 37,873, a 62.1% difference. Vulkan is a graphics and compute API, and while the AMD card still wins by a wide margin, the relative closeness compared to OpenCL suggests the NVIDIA part's architecture handles Vulkan rendering more efficiently than OpenCL compute. Still, the NVIDIA part trails by more than 2.6x in this test.

The wider benchmark set for the AMD card includes several PassMark tests, which provide additional context for its capabilities. The AMD Radeon RX 7900 GRE scores 27,089 in PassMark G3D, 1,180 in PassMark G2D, and 15,016 in PassMark GPU Compute. In DirectX tests, it records 310 in DirectX 9, 300 in DirectX 11, 139 in DirectX 10, and 107 in DirectX 12. These scores indicate strong performance across legacy and modern APIs, though the database does not include comparable PassMark results for the NVIDIA part.

The NVIDIA RTX A500 Mobile's nearest rivals in the database are all AMD workstation cards, and it sits within a tight cluster: the AMD Radeon Pro 575 at 39,555 (0% delta), the AMD Radeon Pro 575X at 39,116 (1.2% delta), and the AMD Radeon Pro WX 7100 at 40,063 (-1.2% delta). This positioning shows the NVIDIA part is competitive within its own class, but that class is far below the RX 7900 GRE. The AMD RX 7900 GRE's nearest rivals are similarly clustered, with the AMD FirePro S10000 at 32,388 (0.2% delta) and the AMD Radeon RX 590 GME at 32,601 (-0.4% delta).

The percentile rankings reinforce the class difference. The NVIDIA RTX A500 Mobile sits at the 82nd percentile of all GPUs, which is higher than the AMD card's 77th percentile. This is because the NVIDIA part's average score of 39,568 exceeds the AMD card's average of 32,456. However, the average benchmark score is skewed by the fact that the AMD card includes low-scoring PassMark DirectX tests in its average, while the NVIDIA part only has two Geekbench results. In the shared head-to-head tests, the AMD card wins outright, and its higher raw scores in OpenCL and Vulkan indicate it is the more capable GPU for those workloads.