AMD Radeon RX 7900M vs AMD Radeon VII Comparison

Head-to-Head Benchmarks

The recorded data shows a comprehensive victory for the AMD Radeon RX 7900M across every shared benchmark. The most dramatic gap appears in the 3DMark Steel Nomad DX12 test, where the RX 7900M scores 4201 against the Radeon VII's 2304, a delta of 82.3%. This is not a marginal lead; it indicates the newer architecture handles modern DirectX 12 workloads with far greater efficiency and raw throughput.

The Vulkan results tell a similar story. The RX 7900M posts 158760 in Geekbench Vulkan, while the Radeon VII manages 91788. That 73% advantage confirms the RX 7900M's dominance in compute-heavy, cross-platform graphics APIs. The OpenCL gap is narrower but still decisive: 129499 versus 91947, a 40.8% delta. OpenCL is often a more balanced test across different vendor architectures, so the fact that the RX 7900M still leads by two-fifths is notable.

Looking at the overall average benchmark score, the RX 7900M sits at 97487, while the Radeon VII trails at 66004. That places the RX 7900M in the 94th percentile of all GPUs in the database, versus the 90th percentile for the Radeon VII. The Radeon VII's nearest rivals include the NVIDIA Tesla T4 (within 1.1% lower) and the NVIDIA Tesla P40 (1.4% higher), which suggests it competes in a workstation-adjacent tier. The RX 7900M, by contrast, sits near the NVIDIA Quadro RTX 6000 (4.3% lower) and the AMD Radeon Pro VII (0.4% higher). The data implies the RX 7900M is not merely faster; it is positioned in a higher performance class entirely.

One interesting detail: the Radeon VII has a Geekbench Metal score of 77975, but the RX 7900M has no Metal result recorded. This is not a comparison point, but it does hint that the Radeon VII was used in macOS environments, whereas the RX 7900M's portable design likely targets Windows-based laptops and mobile workstations.

The Verdict

From the benchmark data alone, the AMD Radeon RX 7900M is the clear choice for any workload that relies on DirectX 12, Vulkan, or OpenCL. It wins all three head-to-head tests, with deltas ranging from 40.8% to 82.3%. The Radeon VII, despite being a capable card in its day, is now outclassed by over a third in compute and by over four-fifths in modern gaming workloads.

The Radeon VII does have one specific advantage: HBM2 memory with a 1.02 TB/s bandwidth, which is nearly double the RX 7900M's 576.0 GB/s. If a user's workload is purely memory-bandwidth-bound and does not stress shader or ray-tracing performance, the Radeon VII could still hold its own. However, the recorded benchmarks do not include such a test, so this remains speculative.

For a buyer choosing between these two today, the RX 7900M is the only rational pick based on measured performance. The Radeon VII is end-of-life, while the RX 7900M is active in production. The RX 7900M also supports DirectX 12 Ultimate and Vulkan 1.4, whereas the Radeon VII tops out at DirectX 12 (12_1) and Vulkan 1.3. That forward-looking API support alone justifies the newer card for anyone planning to run titles released in the next few years.

Architecture Differences

The architectural gap between these two GPUs is enormous. The RX 7900M uses the Navi 31 chip built on RDNA 3.0, fabricated on a 5 nm process at TSMC. The Radeon VII uses the Vega 20 chip on GCN 5.1, built on a 7 nm process, also at TSMC. The node difference alone explains a large portion of the performance gap: 5 nm allows far more transistors in the same area. The RX 7900M packs 57,700 million transistors on a 529 mm² die, yielding a transistor density of 109.1M per mm². The Radeon VII has only 13,230 million transistors on a 331 mm² die, a density of 40.0M per mm². That is a 2.7x density advantage for the newer chip.

The core configurations differ sharply as well. The RX 7900M has 4608 shading units, 288 texture mapping units, and 192 raster operators. It also includes 72 ray-tracing cores, a feature the Radeon VII lacks entirely. The Radeon VII has 3840 shading units, 240 TMUs, and only 64 ROPs. The RX 7900M's pixel rate is 401.3 GPixel/s versus 112.0 GPixel/s for the Radeon VII, and its texture rate is 601.9 GTexel/s versus 420.0 GTexel/s. These are not incremental improvements; they are generational leaps.

Memory architecture is where the Radeon VII has a claim to superiority. It uses HBM2 with a 4096-bit bus, delivering 1.02 TB/s of bandwidth. The RX 7900M uses GDDR6 on a 256-bit bus, delivering 576.0 GB/s. For bandwidth-sensitive tasks such as certain scientific simulations or high-resolution texture streaming, the Radeon VII's memory subsystem is objectively superior. However, the RX 7900M compensates with much higher clock speeds and more compute units. The RX 7900M's base clock is 1825 MHz with a boost of 2090 MHz, while the Radeon VII runs at 1400 MHz base and 1750 MHz boost. The memory clock difference is stark: 2250 MHz (18 Gbps effective) versus 1000 MHz (2 Gbps effective). The HBM2's wide bus makes up for the low clock, but the GDDR6's higher speed helps the RX 7900M in many real-world scenarios.

The power envelope also diverges. The RX 7900M is rated at 180 W TDP and is an integrated graphics package (IGP) with no power connectors, designed for laptops. The Radeon VII consumes 295 W, requires two 8-pin power connectors, and needs a 600 W power supply. The RX 7900M is a mobile part; the Radeon VII is a desktop dual-slot card measuring 280 mm in length, 125 mm in height, and 40 mm in width. The RX 7900M has no fixed dimensions listed, as it is "portable device dependent."

FAQ

Q: Which GPU is faster in the 3DMark Steel Nomad DX12 test?

A: The AMD Radeon RX 7900M scores 4201, which is 82.3% higher than the Radeon VII's 2304. This is the largest single-benchmark gap between the two.

Q: Does the Radeon VII have any advantage in memory bandwidth?

A: Yes. The Radeon VII uses HBM2 memory on a 4096-bit bus, delivering 1.02 TB/s. The RX 7900M's GDDR6 on a 256-bit bus delivers 576.0 GB/s. The Radeon VII's bandwidth is nearly double.

Q: Can the Radeon VII do hardware ray tracing?

A: No. The Radeon VII has no ray-tracing cores listed. The RX 7900M includes 72 ray-tracing cores, which is a major feature difference in modern games.

Q: What API levels does each card support?

A: The RX 7900M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Radeon VII supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.3. The RX 7900M is ahead on both DirectX and Vulkan.

Q: Which card is still in production?

A: The RX 7900M is listed as active in production. The Radeon VII is marked as end-of-life.

Q: What is the launch MSRP of the Radeon VII?

A: The Radeon VII had a launch MSRP of 699 USD. The RX 7900M has no recorded launch MSRP, as it is a mobile integrated part.

Where Each One Wins

The RX 7900M wins decisively in every benchmark where both cards have recorded scores. In 3DMark Steel Nomad DX12, its 82.3% lead suggests it is far better suited for gaming workloads that leverage modern DirectX 12 features. In Geekbench Vulkan, the 73% delta indicates strong compute and graphics performance in cross-platform engines. In OpenCL, the 40.8% lead points to robust general-purpose compute capability, which matters for tasks like rendering, machine learning inference, and scientific calculations.

The Radeon VII's theoretical win condition lies in memory-bandwidth-bound scenarios. Its 1.02 TB/s bandwidth versus the RX 7900M's 576.0 GB/s could give it an edge in workloads that stream large datasets, such as certain data analytics or large-volume texture operations. However, no benchmark in the database directly tests this, so it remains an unproven advantage. The Radeon VII also has a Geekbench Metal score of 77975, which the RX 7900M cannot match because it has no recorded Metal result. This suggests the Radeon VII may still be relevant in Apple ecosystem environments, though the RX 7900M's portable form factor makes it unlikely to be used there.

For anything involving ray tracing, the RX 7900M is the only option. The Radeon VII's lack of ray-tracing cores means it cannot hardware-accelerate this feature at all. For power-constrained mobile systems, the RX 7900M's 180 W TDP versus the Radeon VII's 295 W TDP makes it the only feasible choice for laptops. The Radeon VII's 600 W power supply requirement and dual-slot size restrict it to desktop towers.

Specification Differences

The two cards differ across nearly every specification field. The process node is 5 nm for the RX 7900M and 7 nm for the Radeon VII. Transistor count is 57,700 million versus 13,230 million. Die size is 529 mm² versus 331 mm². Transistor density is 109.1M per mm² versus 40.0M per mm². Base clock is 1825 MHz versus 1400 MHz. Boost clock is 2090 MHz versus 1750 MHz. Memory clock is 2250 MHz (18 Gbps effective) versus 1000 MHz (2 Gbps effective).

Memory type is GDDR6 for the RX 7900M and HBM2 for the Radeon VII. Bus width is 256 bit versus 4096 bit. Bandwidth is 576.0 GB/s versus 1.02 TB/s. Shading units are 4608 versus 3840. TMUs are 288 versus 240. ROPs are 192 versus 64. Ray-tracing cores are 72 versus none. Pixel rate is 401.3 GPixel/s versus 112.0 GPixel/s. Texture rate is 601.9 GTexel/s versus 420.0 GTexel/s. FP32 performance is 38.52 TFLOPS versus 13.44 TFLOPS. FP16 is 77.05 TFLOPS versus 26.88 TFLOPS (both at 2:1 ratio).

TDP is 180 W versus 295 W. Slot width is IGP versus dual-slot. Power connectors are none versus 2x 8-pin. The suggested PSU for the Radeon VII is 600 W; the RX 7900M has no listed PSU requirement. Bus interface is PCIe 4.0 x16 versus PCIe 3.0 x16. Display outputs are "portable device dependent" versus 1x HDMI 2.0b and 3x DisplayPort 1.4a. The RX 7900M has no fixed dimensions; the Radeon VII measures 280 mm by 125 mm by 40 mm. Release dates are 2023-10-18 for the RX 7900M and 2019-02-06 for the Radeon VII. The Radeon VII's predecessor is "Vega" and its successor is "Navi"; the RX 7900M's predecessor is "Polaris Mobile" with no listed successor. The Radeon VII is end-of-life, while the RX 7900M remains active.