AMD Radeon Pro Vega II vs AMD Radeon RX 7900M Comparison

The AMD Radeon Pro Vega II and the AMD Radeon RX 7900M represent two distinct philosophies in AMD’s GPU lineup, separated by four years of architectural evolution. The data shows a clear performance hierarchy, but the Pro Vega II’s specialized memory configuration and the RX 7900M’s modern feature set create a nuanced comparison beyond raw compute scores. Based on the head-to-head benchmarks available, the RX 7900M is the decisive winner, but the Pro Vega II retains a specific niche for high-capacity memory workloads.

Head-to-Head Benchmarks

The direct comparison between these two cards is limited to two benchmark tests, yet the results are unambiguous. In Geekbench OpenCL, the RX 7900M scores 129,499 points, decisively outperforming the Pro Vega II’s 99,048 points. This represents a 30.7% advantage for the newer card, a substantial margin that reflects the generational leap in compute architecture. The deltaPct of -23.5% in the data confirms that the Pro Vega II trails by nearly a quarter of its rival’s score, indicating a fundamental difference in raw throughput.

The gap widens further in the Geekbench Vulkan test, where the RX 7900M achieves 158,760 points against the Pro Vega II’s 99,621 points. Here, the RX 7900M leads by 59.4%, a staggering difference that underscores its superior graphics API efficiency. The deltaPct of -37.3% for the Pro Vega II in this test suggests that the older GCN 5.1 architecture struggles significantly with modern Vulkan workloads compared to the RDNA 3.0 implementation. This is not a marginal victory; it is a dominant performance sweep.

Contextualizing these scores against their respective rival pools provides further insight. The Pro Vega II’s average benchmark score of 109,617 places it in the 94th percentile of all GPUs, sitting just 1% below the AMD Radeon PRO W7900’s average of 110,725. It also edges out the AMD Radeon Pro W6600X by 2.1% and the Pro Vega II Duo by 2.7%, showing that even the single-die version of this card remains competitive within its professional lineage. However, it trails the NVIDIA RTX A5500 Mobile by 3.8%, indicating it is not the absolute leader in its class.

The RX 7900M, with an average benchmark score of 97,487, also sits in the 94th percentile, but its rival comparison tells a different story. It is nearly tied with the AMD Radeon Pro VII, leading by just 0.4%, yet it holds a 5.4% advantage over the AMD Radeon Instinct MI60 and a 6.3% edge over the NVIDIA RTX A4500. The only rival it trails is the NVIDIA Quadro RTX 6000, by 4.3%. This profile suggests the RX 7900M is a high-performance mobile part that competes with desktop-class workstation cards, despite its lower power envelope.

The Verdict

The benchmark data is unequivocal: the AMD Radeon RX 7900M is the superior performer in compute and graphics workloads. It wins both head-to-head tests by margins ranging from 30.7% to 59.4%, making it the obvious choice for users prioritizing raw speed in OpenCL and Vulkan applications. The RX 7900M’s 94th percentile ranking, combined with its active production status, positions it as a modern, forward-looking solution for gaming and general-purpose compute.

The AMD Radeon Pro Vega II, while still ranking in the 94th percentile, is an end-of-life product from 2019. Its wins are not in raw speed but in memory capacity and bandwidth. With 32 GB of HBM2 memory on a 4096-bit bus, it offers 825.3 GB/s of bandwidth—43.3% more than the RX 7900M’s 576.0 GB/s. For professionals dealing with datasets that exceed 16 GB, the Pro Vega II is the only viable option here, despite its slower compute performance. The data shows it is also more comparable to other Pro cards, sitting close to the PRO W7900, which suggests it was designed for a specific workstation niche that values memory over raw FLOPs.

Strictly from the data, the verdict is simple: choose the RX 7900M for performance, and choose the Pro Vega II only if the 32 GB memory capacity is an absolute requirement. The RX 7900M’s 16 GB GDDR6 is ample for most tasks, but it cannot match the Pro Vega II’s massive frame buffer for large-scale rendering or scientific simulation. There is no middle ground; the performance delta is too large to consider the Pro Vega II for speed, and the memory delta is too large to consider the RX 7900M for capacity.

Architecture Differences

The two GPUs are built on fundamentally different architectures and process nodes. The Pro Vega II uses the Vega 20 chip based on GCN 5.1 architecture, fabricated on a 7 nm process at TSMC. It packs 13,230 million transistors into a 331 mm² die, yielding a transistor density of 40.0M per mm². In contrast, the RX 7900M uses the Navi 31 chip with RDNA 3.0 architecture, also from TSMC but on a more advanced 5 nm node. This newer process allows for 57,700 million transistors on a 529 mm² die, achieving a density of 109.1M per mm²—more than 2.7 times that of the Pro Vega II.

The core configurations reflect these architectural shifts. The Pro Vega II has 4,096 shading units, 256 TMUs, and 64 ROPs, while the RX 7900M increases these to 4,608 shading units, 288 TMUs, and 192 ROPs. The RX 7900M also introduces 72 ray tracing cores, a feature entirely absent from the Pro Vega II. This explains the RX 7900M’s superior pixel rate of 401.3 GPixel/s versus the Pro Vega II’s 110.1 GPixel/s, and its texture rate of 601.9 GTexel/s versus 440.3 GTexel/s. The FP32 compute is similarly lopsided: 38.52 TFLOPS for the RX 7900M versus 14.09 TFLOPS for the Pro Vega II.

Memory architectures could not be more different. The Pro Vega II uses 32 GB of HBM2 on a 4096-bit bus, running at 806 MHz (1612 Mbps effective) to deliver 825.3 GB/s. The RX 7900M uses 16 GB of GDDR6 on a 256-bit bus, running at 2250 MHz (18 Gbps effective) for 576.0 GB/s. The Pro Vega II’s bandwidth advantage is clear, but the RX 7900M’s memory technology is more power-efficient and easier to integrate into a mobile form factor. Clock speeds also favor the RX 7900M, with a base of 1825 MHz and boost of 2090 MHz, versus the Pro Vega II’s 1574 MHz base and 1720 MHz boost.

Power and interface differences are stark. The Pro Vega II is a quad-slot card with a 475 W TDP and requires an 850 W power supply, using an Apple MPX bus interface. The RX 7900M is an IGP (integrated graphics processor) for laptops, with a 180 W TDP and no power connectors, using a standard PCIe 4.0 x16 interface. The Pro Vega II outputs via 1x HDMI 2.0b and 4x Thunderbolt, while the RX 7900M’s outputs are portable device dependent. API support also differs: the Pro Vega II supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.3, while the RX 7900M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, adding ray tracing and mesh shaders.

FAQ

Q: Which GPU has higher raw compute performance?

A: The AMD Radeon RX 7900M. It achieves 38.52 TFLOPS FP32, compared to the Pro Vega II’s 14.09 TFLOPS, and also leads in FP16 with 77.05 TFLOPS versus 28.18 TFLOPS.

Q: Does the older Pro Vega II have any memory advantage?

A: Yes, the Pro Vega II has 32 GB of HBM2 memory with 825.3 GB/s bandwidth on a 4096-bit bus, while the RX 7900M has 16 GB of GDDR6 with 576.0 GB/s on a 256-bit bus.

Q: What is the TDP difference between the two cards?

A: The Pro Vega II has a TDP of 475 W and requires an 850 W power supply, whereas the RX 7900M has a TDP of 180 W and has no power connectors, as it is an IGP for laptops.

Q: Which card supports ray tracing?

A: Only the AMD Radeon RX 7900M supports ray tracing, featuring 72 RT cores. The Pro Vega II has no RT cores listed in its specifications.

Q: How do their benchmark scores compare in Vulkan?

A: The RX 7900M scores 158,760 in Geekbench Vulkan, which is 59.4% higher than the Pro Vega II’s 99,621, indicating a massive advantage in modern graphics API performance.

Q: Are both GPUs in the same performance percentile?

A: Yes, both are in the 94th percentile of all GPUs, but the RX 7900M’s average benchmark score of 97,487 is lower than the Pro Vega II’s 109,617, reflecting the different benchmark suites used for each.

Where Each One Wins

The AMD Radeon RX 7900M wins in every performance category measured by the head-to-head benchmarks. It is the clear choice for high-FPS gaming, real-time ray tracing, and any workload that benefits from high FP32 throughput. Its superior pixel rate of 401.3 GPixel/s and texture rate of 601.9 GTexel/s make it ideal for modern game engines and 3D rendering at high resolutions. The Vulkan score of 158,760 indicates excellent driver optimization and API efficiency, making it suitable for Vulkan-based applications and cross-platform development. Its lower 180 W TDP also makes it the only viable option for portable or mobile systems.

The AMD Radeon Pro Vega II wins exclusively on memory capacity and bandwidth. Its 32 GB frame buffer is double that of the RX 7900M and its 825.3 GB/s bandwidth exceeds the RX 7900M by 43.3%. This makes it the superior choice for large-scale scientific computing, machine learning inference with massive datasets, or 8K video editing where the entire working set must reside in VRAM. Its 4096-bit bus and HBM2 technology are designed for sustained memory-intensive workloads, and its 94th percentile ranking among all GPUs shows it remains relevant for professional tasks. However, its 475 W TDP and quad-slot form factor restrict it to desktop workstations with ample power and space. For users who need more than 16 GB of VRAM, the Pro Vega II is the only option, but for everyone else, the RX 7900M’s performance advantage is decisive.