AMD Radeon PRO W7800 vs AMD Radeon RX 6850M XT Comparison

AMD Radeon PRO W7800 and AMD Radeon RX 6850M XT occupy different corners of the AMD graphics lineup, one a workstation-focused desktop part and the other a high-end mobile solution. The recorded data shows a clear performance hierarchy, but the more interesting story lies in how each card is built and where its remaining strengths reside. The PRO W7800 wins every shared benchmark in the database, while the RX 6850M XT offers a compact, lower-power alternative that still ranks in the 92nd percentile of all GPUs.

Where Each One Wins

The AMD Radeon PRO W7800 is the outright winner in every benchmark the two cards have in common. It takes the Geekbench OpenCL test with a score of 154,366 against 85,040 for the RX 6850M XT, a margin of 81.5 percent. In Geekbench Vulkan, the PRO W7800 scores 175,422 versus 99,483, a 76.3 percent advantage. These are not close contests; the workstation card dominates compute workloads across both API paths.

The RX 6850M XT does not win any head-to-head test, but its position in the broader database shows it is hardly a weak performer. It posts an average benchmark score of 78,940, which places it in the 92nd percentile of all GPUs. Its nearest rivals in the database are the NVIDIA Tesla P100 PCIe 12 GB and 16 GB variants, along with the GeForce RTX 5090 and RTX 5090 D. The delta against those cards is small, ranging from -1.1 percent to +1.6 percent, meaning the mobile chip trades blows with some of the most powerful desktop cards on record. Its win condition is not raw speed but form factor: it is an integrated graphics package (IGP) with no power connectors, designed for portable devices where the PRO W7800's dual-slot, 280 mm length simply cannot exist.

Architecture Differences

The two GPUs come from different generations of AMD's RDNA architecture. The PRO W7800 uses RDNA 3.0 with the Navi 31 chip, codenamed Plum Bonito, built on a 5 nm process at TSMC. The RX 6850M XT uses RDNA 2.0 with the Navi 22 chip, built on a 7 nm process, also at TSMC. The process node difference is significant: the PRO W7800 packs 57,700 million transistors into a 529 mm² die, giving a transistor density of 109.1 million per mm². The RX 6850M XT has 17,200 million transistors on a 335 mm² die, for a density of 51.3 million per mm². That is more than double the density on the newer part.

Compute resources scale accordingly. The PRO W7800 has 4,480 shading units, 280 texture mapping units, 128 ROPs, and 70 ray tracing cores. The RX 6850M XT has 2,560 shading units, 160 TMUs, 64 ROPs, and 40 ray tracing cores. The workstation card roughly doubles the mobile part in every execution resource category. Memory also differs: the PRO W7800 carries 32 GB of GDDR6 on a 256-bit bus with 576.0 GB/s of bandwidth, while the RX 6850M XT has 12 GB of GDDR6 on a 192-bit bus with 432.0 GB/s. Both run memory at 2250 MHz with 18 Gbps effective speed, but the wider bus on the PRO W7800 yields the bandwidth advantage.

The feature sets are otherwise aligned. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Neither card has tensor cores listed. The PRO W7800 outputs to 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1, while the RX 6850M XT's display outputs are listed as "Portable Device Dependent," reflecting its mobile nature. The PRO W7800 uses a PCIe 4.0 x16 interface, and so does the RX 6850M XT.

Head-to-Head Benchmarks

The Geekbench OpenCL result is the clearest indicator of the performance gap. The PRO W7800 scores 154,366, and the RX 6850M XT scores 85,040. The delta is 81.5 percent in favor of the workstation card. This is a raw compute test that stresses shading units and memory bandwidth, both of which the PRO W7800 has in abundance. The 32 GB memory pool and 576.0 GB/s bandwidth likely contribute to the large margin, as OpenCL workloads often scale with memory capacity and throughput.

Geekbench Vulkan shows a similar story but with a slightly smaller gap. The PRO W7800 hits 175,422, while the RX 6850M XT reaches 99,483. The delta is 76.3 percent. Vulkan is more sensitive to driver overhead and geometry throughput, but the PRO W7800 still holds a commanding lead. The RX 6850M XT's higher base clock (2321 MHz versus 1895 MHz) and boost clock (2581 MHz versus 2525 MHz) do not close the gap, because the PRO W7800's larger shader array and ROP count overwhelm the mobile part's frequency advantage in these tests.

The database records only these two shared benchmarks, so the comparison is limited but consistent. The PRO W7800 wins both with margins above 75 percent, and its average benchmark score of 164,894 sits in the 97th percentile of all GPUs. The RX 6850M XT's average of 78,940 is roughly half that, which tracks with the OpenCL delta of 81.5 percent. The RX 6850M XT does have a 3DMark Steel Nomad DX12 score of 2,257 and a Geekbench Metal score of 128,981, but the PRO W7800 has no corresponding entries in the database, so no direct comparison is possible.

FAQ

Q: Which GPU is faster in Geekbench OpenCL?

A: The AMD Radeon PRO W7800 is faster, scoring 154,366 against 85,040 for the RX 6850M XT, a difference of 81.5 percent.

Q: Does the RX 6850M XT win any benchmark against the PRO W7800?

A: No. The database records two shared tests, Geekbench OpenCL and Geekbench Vulkan, and the PRO W7800 wins both.

Q: What is the transistor density difference between the two chips?

A: The PRO W7800's Navi 31 chip has a density of 109.1 million transistors per mm², while the RX 6850M XT's Navi 22 chip has 51.3 million per mm².

Q: How much memory does each card have?

A: The PRO W7800 has 32 GB of GDDR6 on a 256-bit bus with 576.0 GB/s bandwidth. The RX 6850M XT has 12 GB of GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth.

Q: Are both cards based on the same architecture?

A: No. The PRO W7800 uses RDNA 3.0, while the RX 6850M XT uses RDNA 2.0.

Q: What is the power consumption of each card?

A: The PRO W7800 has a TDP of 260 W and requires 2x 8-pin power connectors. The RX 6850M XT has a TDP of 165 W and uses no power connectors.

Specification Differences

The table below lists only the fields where the two cards differ, based on the recorded data.

| Specification | AMD Radeon PRO W7800 | AMD Radeon RX 6850M XT |

|---|---|---|

| Architecture | RDNA 3.0 | RDNA 2.0 |

| Chip | Navi 31 | Navi 22 |

| Codename | Plum Bonito | None |

| Generation | Radeon Pro Navi (Navi III Series) | Navi Mobile (RX 6000M) |

| Process Node | 5 nm | 7 nm |

| Transistors | 57,700 million | 17,200 million |

| Die Size | 529 mm² | 335 mm² |

| Transistor Density | 109.1M / mm² | 51.3M / mm² |

| Base Clock | 1895 MHz | 2321 MHz |

| Boost Clock | 2525 MHz | 2581 MHz |

| Game Clock | None | 2463 MHz |

| Memory Size | 32 GB | 12 GB |

| Memory Bus Width | 256 bit | 192 bit |

| Memory Bandwidth | 576.0 GB/s | 432.0 GB/s |

| Shading Units | 4480 | 2560 |

| TMUs | 280 | 160 |

| ROPs | 128 | 64 |

| RT Cores | 70 | 40 |

| Pixel Rate | 323.2 GPixel/s | 165.2 GPixel/s |

| Texture Rate | 707.0 GTexel/s | 413.0 GTexel/s |

| FP32 | 45.25 TFLOPS | 13.21 TFLOPS |

| FP16 | 90.50 TFLOPS (2:1) | 26.43 TFLOPS (2:1) |

| TDP | 260 W | 165 W |

| Slot Width | Dual-slot | IGP |

| Power Connectors | 2x 8-pin | None |

| Suggested PSU | 600 W | None |

| Display Outputs | 3x DisplayPort 2.1, 1x mini-DisplayPort 2.1 | Portable Device Dependent |

| Dimensions | 280 mm length, 110 mm height, 40 mm width | None |

| Production Status | Active | End-of-life |

| Release Date | 2023-04-12 | 2022-01-03 |

| Predecessor | Radeon Pro Vega | Polaris Mobile |

| Launch MSRP | 2,499 USD | None |

The Verdict

The data points to a straightforward choice for users who need maximum compute throughput in a desktop workstation. The AMD Radeon PRO W7800 delivers 81.5 percent higher OpenCL scores and 76.3 percent higher Vulkan scores than the RX 6850M XT. Its 32 GB memory pool, 576.0 GB/s bandwidth, and 45.25 TFLOPS FP32 performance make it the clear pick for GPU-accelerated rendering, simulation, or any workload that stresses raw shader output. The 97th percentile ranking among all GPUs confirms it sits near the top of the entire database.

The RX 6850M XT is not a direct competitor in the same physical class. It is an end-of-life mobile part with a 165 W TDP and no power connectors, designed to fit into laptops where the PRO W7800's 260 W dual-slot card cannot go. Its 92nd percentile ranking, with an average score of 78,940, shows it remains a capable mobile GPU, trading closely with the NVIDIA Tesla P100 variants and the GeForce RTX 5090 in the database. But against the PRO W7800, it loses every recorded benchmark by a wide margin.

For a desktop workstation with space and power budget, the PRO W7800 is the superior choice on every measured metric. For a portable system where the PRO W7800 physically cannot be installed, the RX 6850M XT provides the best available performance in that constrained form factor, but the comparison ends there. The PRO W7800 wins the performance crown, and the RX 6850M XT wins the portability argument, which is not a category the workstation card can enter.