AMD Radeon Pro Vega 56 vs AMD Radeon Pro W6600X Comparison

The two cards in this comparison represent very different points in AMD’s professional GPU history. The AMD Radeon Pro W6600X, built on RDNA 2.0 and released in August 2021, is a modern, power-efficient design. The AMD Radeon Pro Vega 56, built on GCN 5.0 and released in August 2017, is an older, larger, and more power-hungry part. The recorded benchmark data shows a clear overall winner, but the margins and underlying specifications tell a more nuanced story.

Head-to-Head Benchmarks

The only direct benchmark comparison in the database is the Geekbench Metal test. In this test, the AMD Radeon Pro W6600X scores 107342, while the AMD Radeon Pro Vega 56 scores 63145. This gives the W6600X a win by a delta of 70% . That is a massive margin, not a small incremental lead. The W6600X is not just faster; it is roughly 1.7 times the score of the Vega 56 in this specific workload.

Looking at the broader context from the database, the W6600X’s score places it at the 94th percentile of all GPUs. Its average benchmark score, which matches its single Metal score, is 107342. The nearest rivals for the W6600X are the AMD Radeon Pro Vega II Duo at 106750 (delta of 0.6% , meaning the W6600X is slightly ahead), the AMD Radeon Pro Vega II at 109617 (delta of -2.1% , so the W6600X is slightly behind), the AMD Radeon PRO W7900 at 110725 (delta of -3.1% ), and the NVIDIA Quadro RTX 6000 at 101872 (delta of 5.4% , meaning the W6600X is ahead).

The Vega 56, in contrast, has an average benchmark score of 63693, derived from three separate tests: Geekbench Metal at 63145, Geekbench OpenCL at 61930, and Geekbench Vulkan at 66004. This places the Vega 56 at the 89th percentile of all GPUs. Its nearest rivals are the AMD Radeon RX 7600M at 63775 (delta of -0.1% ), the AMD Radeon RX 9060 XT LP at 63830 (delta of -0.2% ), the NVIDIA CMP 30HX at 63842 (delta of -0.2% ), and the AMD Radeon Pro WX 9100 at 64212 (delta of -0.8% ). The Vega 56 is essentially neck-and-neck with these cards, all within a fraction of a percent.

The data indicates that the W6600X sits in a higher performance tier entirely. While the Vega 56 competes with mid-range cards from later generations, the W6600X competes with top-tier professional cards like the Radeon Pro Vega II and the Radeon PRO W7900. The 70% delta in the head-to-head Metal test is the single clearest signal: the W6600X is the decisive victor in this matchup.

Where Each One Wins

The AMD Radeon Pro W6600X wins the only recorded head-to-head benchmark, the Geekbench Metal test, with a score of 107342 against 63145. This is a clean sweep in terms of recorded wins, with 1 win for the W6600X and 0 wins for the Vega 56.

However, the Vega 56 does show some strengths in the broader benchmark data. Its Geekbench Vulkan score of 66004 is higher than its Metal score of 63145 and its OpenCL score of 61930. This suggests that the Vega 56 performs relatively better in Vulkan workloads than in Metal or OpenCL, even though its absolute scores are far below the W6600X’s single Metal result. For users or applications that heavily rely on Vulkan, the Vega 56’s relative performance profile may be more favorable than its Metal score alone would indicate.

The W6600X, with no Vulkan or OpenCL scores recorded, is only characterized by its Metal performance. Its advantage in Metal is overwhelming, but the database does not provide evidence of how it handles other APIs. The Vega 56, by contrast, has a multi-API footprint, so it may be the only option if a specific workload requires Vulkan or OpenCL and the W6600X’s performance in those APIs is unverified.

In terms of memory bandwidth, the Vega 56 has a significant theoretical advantage. Its HBM2 memory on a 2048-bit bus delivers 402.4 GB/s of bandwidth, compared to the W6600X’s GDDR6 memory on a 128-bit bus at 256.0 GB/s. This means the Vega 56 could be better suited for memory-bandwidth-bound tasks, even though its raw compute scores are lower. The W6600X compensates with much higher clocks and a more efficient architecture, but the bandwidth gap is a real differentiator.

The W6600X wins in compute throughput. Its FP32 rate is 10.15 TFLOPS versus the Vega 56’s 8.960 TFLOPS. Its FP16 rate is 20.31 TFLOPS versus 17.92 TFLOPS. Its pixel rate is 158.7 GPixel/s versus 80.00 GPixel/s. Its texture rate is 317.3 GTexel/s versus 280.0 GTexel/s. Every raw throughput metric favors the W6600X.

FAQ

Q: Which card has the higher Geekbench Metal score?

A: The AMD Radeon Pro W6600X records a Geekbench Metal score of 107342, while the AMD Radeon Pro Vega 56 records 63145. The W6600X is 70% higher.

Q: How does the AMD Radeon Pro Vega 56 compare to its nearest rivals?

A: The Vega 56’s average score of 63693 is -0.1% behind the AMD Radeon RX 7600M (63775), -0.2% behind the AMD Radeon RX 9060 XT LP (63830), -0.2% behind the NVIDIA CMP 30HX (63842), and -0.8% behind the AMD Radeon Pro WX 9100 (64212). All these differences are within a single percentage point.

Q: Where does the AMD Radeon Pro W6600X rank among all GPUs?

A: The W6600X is at the 94th percentile of all GPUs, with an average benchmark score of 107342. The Vega 56 is at the 89th percentile with an average score of 63693.

Q: What is the memory configuration difference between the two cards?

A: The W6600X uses 8 GB of GDDR6 on a 128-bit bus with 256.0 GB/s bandwidth. The Vega 56 uses 8 GB of HBM2 on a 2048-bit bus with 402.4 GB/s bandwidth.

Q: Which card has higher clock speeds?

A: The W6600X has a base clock of 2068 MHz and a boost clock of 2479 MHz. The Vega 56 has a base clock of 1138 MHz and a boost clock of 1250 MHz. The W6600X’s boost clock is more than double that of the Vega 56’s base clock.

Q: Does the W6600X support hardware ray tracing?

A: Yes, the W6600X includes 32 ray tracing cores. The Vega 56 has no ray tracing cores listed in the database.

Specification Differences

The two cards differ on nearly every major specification field. The W6600X uses a 7 nm process from TSMC, while the Vega 56 uses a 14 nm process from GlobalFoundries. The W6600X has 11,060 million transistors on a 237 mm² die, giving a transistor density of 46.7M / mm². The Vega 56 has 12,500 million transistors on a 495 mm² die, giving a density of 25.3M / mm². The Vega 56 is physically much larger but less dense.

Clock speeds differ substantially. The W6600X runs at 2068 MHz base and 2479 MHz boost. The Vega 56 runs at 1138 MHz base and 1250 MHz boost. Memory clocks also differ: the W6600X lists 2000 MHz with 16 Gbps effective speed, while the Vega 56 lists 786 MHz with 1572 Mbps effective speed.

Memory type and bus width are completely different. The W6600X uses 8 GB of GDDR6 on a 128-bit bus. The Vega 56 uses 8 GB of HBM2 on a 2048-bit bus. The Vega 56’s bandwidth of 402.4 GB/s exceeds the W6600X’s 256.0 GB/s.

Compute unit counts differ. The W6600X has 2048 shading units, 128 TMUs, and 64 ROPs. The Vega 56 has 3584 shading units, 224 TMUs, and 64 ROPs. The Vega 56 has more shading units and TMUs, but the W6600X’s higher clocks compensate.

Power and physical design differ. The W6600X has a TDP of 120 W and is a dual-slot card with a suggested power supply of 300 W. The Vega 56 has a TDP of 210 W, is listed as an IGP (integrated graphics processor), and has no power connectors or suggested PSU listed.

Bus interfaces differ. The W6600X uses an Apple MPX interface with no display outputs. The Vega 56 uses PCIe 3.0 x16 and has 1x HDMI 2.0b and 3x DisplayPort 1.4a outputs.

API support differs. The W6600X supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Vega 56 supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.3.

The W6600X has a launch MSRP of 699 USD. The Vega 56 has no launch MSRP listed.

Architecture Differences

The architectural gap is the root cause of the performance divide. The W6600X is built on RDNA 2.0 with the Navi 23 chip, part of the Radeon Pro Mac (Navi II Series) generation. The Vega 56 is built on GCN 5.0 with the Vega 10 chip, part of the Radeon Pro Mac (Vega Series) generation.

The process node difference is significant: 7 nm versus 14 nm. This allows the W6600X to pack 46.7M transistors per mm² versus the Vega 56’s 25.3M per mm². The W6600X achieves higher performance with fewer total transistors (11,060 million versus 12,500 million) on a much smaller die (237 mm² versus 495 mm²).

The W6600X introduces ray tracing cores, with 32 dedicated RT cores. The Vega 56 has no ray tracing hardware. This is a feature generation leap, not just a speed improvement.

Shader architecture differs in efficiency. The W6600X uses 2048 shading units, while the Vega 56 uses 3584. Despite having nearly half the shading units, the W6600X produces higher FP32 throughput (10.15 TFLOPS versus 8.960 TFLOPS). This is a direct result of the RDNA 2.0 design’s higher clocks and instruction efficiency.

Memory architecture is fundamentally different. The W6600X relies on GDDR6 with a narrow 128-bit bus and 256.0 GB/s bandwidth. The Vega 56 uses HBM2 with a wide 2048-bit bus and 402.4 GB/s bandwidth. This means the Vega 56 has 57% more memory bandwidth, but the W6600X’s compute advantage is so large that it still wins decisively.

The Vega 56 is an integrated graphics processor (IGP) with no power connectors, despite its 210 W TDP. The W6600X is a dual-slot add-in card with a 120 W TDP. The W6600X is also much more power-efficient on a per-performance basis, delivering higher scores with nearly half the thermal design power.

The replacement of the GCN architecture with RDNA 2.0 also affects API capabilities. The W6600X supports DirectX 12 Ultimate and Vulkan 1.4, while the Vega 56 is limited to DirectX 12 (12_1) and Vulkan 1.3. These are not just version numbers; they represent the absence of features like mesh shaders and advanced ray tracing in the older architecture.

The release timeline spans four years, with the W6600X launching in August 2021 and the Vega 56 in August 2017. The database records both as end-of-life products, but the W6600X is clearly the more modern design. Its 94th percentile ranking versus the Vega 56’s 89th percentile confirms that the architectural advancements translate directly into superior benchmark results.