AMD Radeon RX 6700M vs AMD Radeon RX 7800M Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive victory for the AMD Radeon RX 7800M across every single benchmark in the comparison database. Of the ten head-to-head tests, the RX 7800M wins all ten, with no tests going to the RX 6700M.

The largest margin comes in compute-oriented workloads. In the Passmark GPU Compute test, the RX 7800M scores 9342 against 5191 for the RX 6700M, a delta of 80%. This is the most lopsided result in the entire comparison and indicates a fundamental advantage in raw throughput that is not fully reflected in graphics-only tests.

The second-largest gap appears in the 3DMark Steel Nomad DX12 test, where the RX 7800M records 2994 points versus 1845 for the RX 6700M, a 62.3% advantage. This is a modern DirectX 12 workload, and the result suggests the newer architecture handles current-generation rendering requirements substantially better.

In the Geekbench OpenCL test, the RX 7800M posts 120778 against 77666, a 55.5% lead. The Vulkan result is similarly strong: 126668 versus 90816, a 39.5% advantage. Both of these are cross-platform compute and graphics APIs, and the RX 7800M leads in each.

The Passmark G2D test, which measures 2D graphics throughput, shows the RX 7800M at 892 versus 555, a 60.7% gap. This is an interesting data point because 2D workloads are less dependent on raw shading power, yet the RX 7800M still maintains a commanding lead.

For DirectX 11 and DirectX 12 workloads, the RX 7800M leads by 36.4% (176 versus 129) and 36.9% (89 versus 65), respectively. These are relatively consistent margins, suggesting the architectural advantage carries across different API generations.

The smallest win for the RX 7800M is in the Passmark DirectX 10 test, where it scores 99 versus 92, a modest 7.6% lead. The DirectX 9 result is also relatively close at 174 versus 155, a 12.3% margin. These older API tests compress the performance gap, likely because they do not exercise the newer features of the RX 7800M.

The Passmark G3D test, a general 3D performance metric, shows the RX 7800M at 17613 versus 13536, a 30.1% advantage. This is a broader measure than the API-specific tests and confirms the overall 3D performance superiority.

Looking at the aggregate numbers, the RX 7800M has an average benchmark score of 27883 across all recorded tests, placing it in the 73rd percentile of all GPUs in the database. The RX 6700M averages 25633, placing it in the 71st percentile. Despite the large head-to-head margins, the percentile gap is relatively small, which reflects the fact that both cards sit in a similar tier of the overall GPU distribution.

Architecture Differences

The two GPUs come from different generations of AMD's Radeon architecture. The RX 7800M is built on RDNA 3.0 using the Navi 32 chip, while the RX 6700M uses RDNA 2.0 with the Navi 22 chip. The codename for the RX 7800M is "Wheat Nas," while the RX 6700M has no recorded codename.

The manufacturing process is a major differentiator. The RX 7800M uses a 5 nm process at TSMC, while the RX 6700M uses a 7 nm process, also at TSMC. The smaller node allows the RX 7800M to pack 28,100 million transistors onto a 346 mm² die, giving a transistor density of 81.2 million per square millimeter. The RX 6700M has 17,200 million transistors on a 335 mm² die, with a density of 51.3 million per square millimeter.

The RX 7800M features 3840 shading units, 240 texture mapping units, and 96 raster operation units. It also has 60 ray tracing cores. The RX 6700M has 2304 shading units, 144 TMUs, 64 ROPs, and 36 ray tracing cores. In every compute unit category, the RX 7800M has significantly more hardware.

Memory configurations differ substantially. The RX 7800M has 12 GB of GDDR6 memory on a 192-bit bus, yielding a bandwidth of 432.0 GB/s. The RX 6700M has 10 GB of GDDR6 on a 160-bit bus, with a bandwidth of 320.0 GB/s. The RX 7800M also runs its memory at 2250 MHz (18 Gbps effective) versus 2000 MHz (16 Gbps effective) for the RX 6700M.

Clock speeds show an interesting trade-off. The RX 6700M has a higher base clock at 1489 MHz versus 1295 MHz for the RX 7800M, and a higher boost clock at 2400 MHz versus 2335 MHz. The game clock is also higher on the RX 6700M at 2300 MHz versus 2145 MHz. Despite the lower clocks, the RX 7800M achieves higher performance due to its larger shader count and architectural improvements.

The FP32 throughput tells the story clearly. The RX 7800M delivers 35.87 TFLOPS, while the RX 6700M delivers 11.06 TFLOPS. The FP16 figures are identical on the RX 7800M at 35.87 TFLOPS (1:1 ratio), but the RX 6700M has a higher FP16 rating at 22.12 TFLOPS with a 2:1 ratio. The RX 7800M's pixel rate is 224.2 GPixel/s versus 153.6 GPixel/s, and its texture rate is 560.4 GTexel/s versus 345.6 GTexel/s.

The RX 7800M has a TDP of 180 W versus 135 W for the RX 6700M. Both are integrated into mobile platforms with no power connectors, and both use PCIe 4.0 x16 interfaces. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

The RX 7800M was released on September 10, 2024, and is listed as Active in production. The RX 6700M was released on May 30, 2021, and is now End-of-life. Both belong to the Navi Mobile generation family, with the RX 7800M in the RX 7000M series and the RX 6700M in the RX 6000M series.

FAQ

Q: Which GPU wins the most benchmarks in the database?

A: The AMD Radeon RX 7800M wins all ten head-to-head benchmark tests against the AMD Radeon RX 6700M. The RX 6700M does not win a single test.

Q: What is the largest performance gap between the two GPUs?

A: The largest margin is in the Passmark GPU Compute test, where the RX 7800M scores 9342 versus 5191, a delta of 80%.

Q: How do the memory bandwidths compare?

A: The RX 7800M has 432.0 GB/s of bandwidth from 12 GB of GDDR6 on a 192-bit bus. The RX 6700M has 320.0 GB/s from 10 GB of GDDR6 on a 160-bit bus.

Q: Which GPU has a higher boost clock?

A: The RX 6700M has a higher boost clock at 2400 MHz, compared to the RX 7800M's 2335 MHz. However, the RX 7800M still outperforms the RX 6700M in every benchmark.

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

A: The RX 7800M has a TDP of 180 W, while the RX 6700M has a TDP of 135 W.

Q: Are both GPUs still in production?

A: No. The RX 7800M is listed as Active, while the RX 6700M is End-of-life.

The Verdict

The data directs a clear choice: the AMD Radeon RX 7800M is the superior mobile GPU by every recorded metric. It wins all ten benchmark comparisons, with margins ranging from 7.6% to 80%. The average benchmark score of 27883 for the RX 7800M versus 25633 for the RX 6700M represents a roughly 8.8% overall advantage in the aggregate, though the head-to-head deltas are much larger in specific workloads.

The RX 7800M should be selected by users who need maximum compute performance, as the 80% lead in Passmark GPU Compute shows a particularly strong advantage for non-graphics workloads. It also leads by 62.3% in the modern 3DMark Steel Nomad DX12 test, making it the better choice for current-generation gaming.

The RX 6700M retains some advantages in the data. It has a higher base clock (1489 MHz versus 1295 MHz) and a higher boost clock (2400 MHz versus 2335 MHz). It also has a lower TDP of 135 W versus 180 W, which could matter in thermally constrained laptop designs. However, these advantages do not translate into any benchmark wins.

The RX 6700M remains a capable option for users who prioritize power efficiency over raw performance, but the RX 7800M is the stronger choice for gaming, compute, and future-proofing. The RX 7800M's larger memory pool (12 GB versus 10 GB) and higher bandwidth (432.0 GB/s versus 320.0 GB/s) further reinforce its position.

The nearest rival data places both cards in a similar overall tier. The RX 7800M's closest comparables are the AMD Radeon Pro Vega 20 (0.2% faster), AMD Radeon Pro W5500X (0.3% slower), NVIDIA GeForce GTX 980 Ti (0.5% slower), and AMD FirePro S7150 (0.8% slower). The RX 6700M sits near the AMD Radeon Pro W5700 (0.4% faster), NVIDIA GeForce RTX 3080 Ti Mobile (0.4% faster), AMD FirePro D700 (0.8% faster), and AMD FirePro W7100 (0.9% faster).

Specification Differences

The two GPUs differ in the following recorded specifications:

• Process node: 5 nm (RX 7800M) versus 7 nm (RX 6700M)
• Transistors: 28,100 million versus 17,200 million
• Die size: 346 mm² versus 335 mm²
• Transistor density: 81.2M / mm² versus 51.3M / mm²
• Base clock: 1295 MHz versus 1489 MHz
• Boost clock: 2335 MHz versus 2400 MHz
• Game clock: 2145 MHz versus 2300 MHz
• Memory clock: 2250 MHz (18 Gbps effective) versus 2000 MHz (16 Gbps effective)
• Memory size: 12 GB versus 10 GB
• Memory bus width: 192 bit versus 160 bit
• Memory bandwidth: 432.0 GB/s versus 320.0 GB/s
• Shading units: 3840 versus 2304
• Texture mapping units: 240 versus 144
• Raster operation units: 96 versus 64
• Ray tracing cores: 60 versus 36
• Pixel rate: 224.2 GPixel/s versus 153.6 GPixel/s
• Texture rate: 560.4 GTexel/s versus 345.6 GTexel/s
• FP32: 35.87 TFLOPS versus 11.06 TFLOPS
• FP16: 35.87 TFLOPS (1:1) versus 22.12 TFLOPS (2:1)
• TDP: 180 W versus 135 W
• Release date: 2024-09-10 versus 2021-05-30
• Production status: Active versus End-of-life
• Architecture: RDNA 3.0 versus RDNA 2.0
• Chip: Navi 32 versus Navi 22
• Codename: Wheat Nas versus none recorded

Where Each One Wins

The AMD Radeon RX 7800M wins in every benchmark category recorded. Its strongest areas are compute workloads, where it leads by 80% in Passmark GPU Compute, and modern DirectX 12 rendering, where it leads by 62.3% in 3DMark Steel Nomad. It also shows strong advantages in 2D throughput (60.7% in Passmark G2D) and OpenCL compute (55.5%).

The RX 7800M is the appropriate choice for users running compute-heavy applications, modern games, or any workload that can utilize its higher shader count and newer architecture. Its 12 GB memory buffer provides more headroom for high-resolution textures and larger datasets.

The AMD Radeon RX 6700M does not win any benchmarks, but the data shows areas where the gap is narrowest. In the Passmark DirectX 10 test, the RX 6700M comes within 7.6% of the RX 7800M. The DirectX 9 test shows a 12.3% gap. These older API workloads do not fully utilize the RX 7800M's newer features.

The RX 6700M's higher clock speeds (base, boost, and game) indicate it may have better responsiveness in lightly threaded or clock-sensitive workloads, though no benchmark in the database confirms this. Its lower TDP of 135 W versus 180 W makes it the better choice for power-constrained laptop designs.

For users who prioritize the lowest power draw and are willing to accept lower performance, the RX 6700M has a TDP advantage of 45 W. However, for any performance metric in the database, the RX 7800M is the winner.