AMD Radeon Pro Vega 64X vs AMD Radeon RX 6900 XT Comparison

Head-to-Head Benchmarks

The benchmark data available for direct comparison is limited to two cross-platform compute tests, and the results are decisive. The AMD Radeon RX 6900 XT wins both recorded head-to-head matchups by a substantial margin, leaving the AMD Radeon Pro Vega 64X with zero wins in the database's direct comparison set.

In Geekbench Metal, the RX 6900 XT scores 177,021 against the Pro Vega 64X's 83,450. That is a delta of -52.9% from the perspective of the older card, meaning the RX 6900 XT more than doubles the Pro Vega 64X's Metal performance. The gap is even wider in Geekbench OpenCL: the RX 6900 XT posts 187,673 while the Pro Vega 64X manages 78,467, a delta of -58.2%. In both tests, the RX 6900 XT's raw score is roughly 2.1 to 2.4 times higher than the Pro Vega 64X's result.

The broader database picture reinforces this separation. The Pro Vega 64X has an average benchmark score of 80,959 across all recorded tests, placing it in the 92nd percentile among all GPUs. Its nearest rivals include the AMD Radeon PRO W6600 at 81,995 (1.3% higher) and the NVIDIA GeForce RTX 5090 at 79,842 (the Pro Vega 64X is 1.4% ahead). The RX 6900 XT, by contrast, has an average score of 50,951 across a much wider set of tests, including DirectX and Passmark workloads, and sits in the 86th percentile. Its nearest rivals are the NVIDIA CMP 50HX at 51,790 (1.6% higher) and the AMD Radeon RX Vega 64 at 50,001 (the RX 6900 XT is 1.9% ahead).

The percentile difference is worth noting: the Pro Vega 64X ranks higher overall (92nd vs. 86th percentile) despite losing both head-to-head tests. This is because the Pro Vega 64X has only two recorded benchmarks, both compute-heavy, while the RX 6900 XT has eleven recorded tests spanning legacy DirectX 9, 10, 11, and 12 workloads, plus 2D and compute tests. The RX 6900 XT's average is dragged down by low scores in older API tests (for example, 167 in Passmark DirectX 10 and 113 in Passmark DirectX 12), which pull its overall average below the Pro Vega 64X's compute-focused results.

FAQ

Q: Which card has the higher average benchmark score?

A: The AMD Radeon Pro Vega 64X has the higher average score at 80,959, compared to the AMD Radeon RX 6900 XT's 50,951. However, this reflects different test sets: the Pro Vega 64X has only two recorded compute benchmarks, while the RX 6900 XT has eleven tests including legacy DirectX workloads.

Q: How do the two cards compare in Geekbench Metal?

A: The RX 6900 XT scores 177,021 in Geekbench Metal, which is 52.9% higher than the Pro Vega 64X's 83,450. The RX 6900 XT wins this test outright.

Q: Is the Pro Vega 64X competitive in any benchmark?

A: In the recorded head-to-head data, the Pro Vega 64X does not win any test. It has zero wins against the RX 6900 XT's two wins. Its only benchmark results are 83,450 in Geekbench Metal and 78,467 in Geekbench OpenCL, both of which the RX 6900 XT beats by wide margins.

Q: What does the RX 6900 XT's percentile rank mean?

A: The RX 6900 XT sits in the 86th percentile of all GPUs in the database, meaning it outperforms about 86% of recorded graphics cards. The Pro Vega 64X sits higher at the 92nd percentile, but again, this is based on a much smaller sample of tests.

Q: Which card has more shading units?

A: The RX 6900 XT has 5,120 shading units, while the Pro Vega 64X has 4,096. The RX 6900 XT also has 320 texture mapping units versus 256, and 128 render output units versus 64.

Q: Do both cards have the same memory bandwidth?

A: Yes, both cards have 512.0 GB/s of memory bandwidth. However, they achieve this differently: the Pro Vega 64X uses 16 GB of HBM2 on a 2048-bit bus, while the RX 6900 XT uses 16 GB of GDDR6 on a 256-bit bus.

The Verdict

The data points to a clear choice for most workloads. The AMD Radeon RX 6900 XT is the faster card in every directly comparable benchmark. In Geekbench Metal, it leads by 52.9%, and in Geekbench OpenCL, it leads by 58.2%. If your application relies on OpenCL or Metal compute performance, the RX 6900 XT is the only rational pick from these two.

The AMD Radeon Pro Vega 64X does have a higher overall percentile ranking (92nd vs. 86th), but that ranking is based on only two benchmark results. The RX 6900 XT's eleven recorded tests include legacy DirectX 9 through 12, Passmark 2D and 3D, and compute workloads, giving it a broader performance profile. The Pro Vega 64X's high average score is a function of a narrow test set, not of superiority in head-to-head comparisons.

For users who need maximum compute throughput in Metal or OpenCL, the RX 6900 XT delivers roughly double the performance of the Pro Vega 64X. For users who care about the Pro Vega 64X's higher percentile rank, the data shows that rank comes from limited sampling. The RX 6900 XT is the better choice unless the application specifically requires the Pro Vega 64X's unique characteristics, such as its integrated form factor or HBM2 memory, which are discussed below.

Specification Differences

The two cards differ on nearly every core specification. The RX 6900 XT has a base clock of 1825 MHz and a boost clock of 2250 MHz, with a game clock of 2015 MHz. The Pro Vega 64X has a base clock of 1250 MHz and a boost clock of 1468 MHz, with no game clock listed. Memory clocks also differ: the Pro Vega 64X runs at 1000 MHz (2 Gbps effective), while the RX 6900 XT runs at 2000 MHz (16 Gbps effective).

The RX 6900 XT has 5,120 shading units, 320 TMUs, 128 ROPs, and 80 ray tracing cores. The Pro Vega 64X has 4,096 shading units, 256 TMUs, and 64 ROPs, with no ray tracing cores. Pixel rate is 288.0 GPixel/s for the RX 6900 XT versus 93.95 GPixel/s for the Pro Vega 64X. Texture rate is 720.0 GTexel/s versus 375.8 GTexel/s. FP32 performance is 23.04 TFLOPS versus 12.03 TFLOPS, and FP16 is 46.08 TFLOPS (2:1) versus 24.05 TFLOPS (2:1).

The RX 6900 XT has a TDP of 300 W, uses a triple-slot cooler, requires 2x 8-pin power connectors, and has a suggested PSU of 700 W. The Pro Vega 64X has a TDP of 250 W, is listed as an integrated graphics product (IGP), has no power connectors, and no suggested PSU. The RX 6900 XT uses PCIe 4.0 x16, while the Pro Vega 64X uses PCIe 3.0 x16. Display outputs differ: the RX 6900 XT has 1x HDMI 2.1, 2x DisplayPort 1.4a, and 1x USB Type-C, while the Pro Vega 64X is listed as portable device dependent.

The RX 6900 XT supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the Pro Vega 64X supports DirectX 12 (12_1) and Vulkan 1.3. Both support OpenGL 4.6. The RX 6900 XT measures 267 mm in length, 120 mm in height, and 50 mm in width. The Pro Vega 64X has no listed dimensions. The RX 6900 XT has a launch MSRP of 999 USD. The Pro Vega 64X has no launch MSRP recorded.

Architecture Differences

The architectural gap between these two cards is generational. The Pro Vega 64X is built on GCN 5.0 architecture, using the Vega 10 chip, and belongs to the Radeon Pro Mac (Vega Series) generation. The RX 6900 XT is built on RDNA 2.0 architecture, using the Navi 21 chip, and belongs to the Navi II (RX 6000) generation.

The manufacturing process differs significantly. The Pro Vega 64X uses a 14 nm process at GlobalFoundries, while the RX 6900 XT uses a 7 nm process at TSMC. Transistor counts reflect the newer node: the RX 6900 XT has 26,800 million transistors, more than double the Pro Vega 64X's 12,500 million. Die size is similar (520 mm² for the RX 6900 XT versus 495 mm² for the Pro Vega 64X), but transistor density is far higher on the RX 6900 XT at 51.5M per mm² versus 25.3M per mm².

Memory architecture is another major split. The Pro Vega 64X uses HBM2 on a 2048-bit bus, while the RX 6900 XT uses GDDR6 on a 256-bit bus. Both achieve identical bandwidth of 512.0 GB/s, but the implementation is fundamentally different. The RX 6900 XT also includes 80 ray tracing cores, which the Pro Vega 64X lacks entirely. The RX 6900 XT's API support for DirectX 12 Ultimate and Vulkan 1.4 reflects its newer feature set, while the Pro Vega 64X is limited to DirectX 12 (12_1) and Vulkan 1.3.

The release timeline also differs: the Pro Vega 64X launched on 2019-03-18, while the RX 6900 XT launched on 2020-10-27. The RX 6900 XT has a predecessor (Navi) and successor (Navi III) listed, while the Pro Vega 64X has neither. Both cards are now end-of-life in the database.

Where Each One Wins

The RX 6900 XT wins in every directly comparable benchmark. In Geekbench Metal and Geekbench OpenCL, it beats the Pro Vega 64X by margins of 52.9% and 58.2%, respectively. The RX 6900 XT also has a broader benchmark profile, with recorded wins in Passmark DirectX 9 (268), DirectX 10 (167), DirectX 11 (279), DirectX 12 (113), G2D (1055), G3D (26732), GPU Compute (14547), and Vulkan (148525). This makes it the clear choice for modern gaming, DirectX 12 Ultimate workloads, and any application that can leverage ray tracing.

The Pro Vega 64X wins only in the abstract sense of having a higher average benchmark score (80,959 vs. 50,951) and a higher percentile rank (92nd vs. 86th). But those figures come from a two-test sample that does not include any win over the RX 6900 XT. The Pro Vega 64X's advantages are structural rather than performance-based: it is an integrated graphics product with no power connectors, making it suitable for portable or embedded systems where a discrete triple-slot card like the RX 6900 XT cannot fit. Its HBM2 memory on a 2048-bit bus may also be preferable in specific compute environments that favor HBM2 over GDDR6, though the recorded bandwidth is identical.

For use cases like gaming, high-throughput compute, or any DirectX 12 Ultimate application, the RX 6900 XT is the only reasonable choice. For systems requiring an integrated GPU with no external power connectors and a 250 W TDP, the Pro Vega 64X is the practical pick, but users should expect roughly half the compute performance in Metal and OpenCL workloads.