AMD Radeon Pro Vega 56 vs AMD Radeon PRO W7900 Comparison

Head-to-Head Benchmarks

The benchmark data presents a clear picture of generational performance separation. The AMD Radeon PRO W7900 outperforms the AMD Radeon Pro Vega 56 in every recorded test, with the margin widening dramatically depending on the workload.

Starting with Geekbench OpenCL, the W7900 achieves a score of 84,379, while the Vega 56 manages 61,930. This represents a 36.2% advantage for the newer card. The OpenCL workload is compute-heavy, and the W7900's lead here reflects the substantial architectural improvements that the RDNA 3.0 design brings over GCN 5.0.

The gap becomes even more pronounced in the Geekbench Vulkan test. The W7900 scores 137,070, which is more than double the Vega 56's 66,004. This is a 107.7% delta, indicating a dramatic leap in graphics API performance. Vulkan is a low-level API that benefits from efficient hardware utilization, and the W7900's newer architecture clearly scales better under these conditions.

The aggregate benchmark score reinforces the trend. The W7900 has an average benchmark score of 110,725 across all tested workloads, placing it at the 94th percentile of all GPUs in the database. The Vega 56, in contrast, averages 63,693, which places it in the 89th percentile. While both are high-performing workstation cards, the W7900 sits in a higher performance tier altogether.

The head-to-head record is decisive: the W7900 wins 2 out of 2 tests, with no benchmark where the Vega 56 takes the lead. The only test where the Vega 56 has a recorded score that the W7900 does not share is the Geekbench Metal benchmark, where the Vega 56 achieves 63,145. The W7900 has no Metal score recorded in the database, so no direct comparison can be made on that API.

FAQ

Q: Which card has the higher average benchmark score?

A: The AMD Radeon PRO W7900 has an average benchmark score of 110,725, significantly higher than the AMD Radeon Pro Vega 56's 63,693.

Q: How much faster is the W7900 in the Vulkan benchmark?

A: The W7900 scores 137,070 versus 66,004 for the Vega 56, a 107.7% improvement. This is the largest margin between the two cards across any shared test.

Q: Which card ranks higher in the overall GPU percentile?

A: The W7900 is in the 94th percentile for all GPUs, while the Vega 56 is in the 89th percentile.

Q: Which memory configuration provides higher bandwidth?

A: The W7900 uses 48 GB of GDDR6 across a 384-bit bus, delivering 864.0 GB/s. The Vega 56 uses 8 GB of HBM2 across a 2048-bit bus, delivering 402.4 GB/s.

Q: Does the Vega 56 have any test where it wins?

A: No. In the head-to-head comparison, the W7900 wins both the OpenCL and Vulkan tests. The Vega 56 only has an additional Metal benchmark score (63,145) that the W7900 does not have a recorded score for.

Q: What is the production status of each card?

A: The W7900 is listed as "Active" production, while the Vega 56 is marked as "End-of-life."

Architecture Differences

The two cards represent fundamentally different architectural generations from AMD. The Radeon PRO W7900 is built on the Navi 31 chip, using the RDNA 3.0 architecture with the "Plum Bonito" codename. It belongs to the "Radeon Pro Navi (Navi III Series)" generation. The Radeon Pro Vega 56 uses the Vega 10 chip and the older GCN 5.0 architecture, belonging to the "Radeon Pro Mac (Vega Series)" generation.

The process node shows the most striking difference. The W7900 is manufactured on a 5 nm process at TSMC, while the Vega 56 uses a 14 nm process at GlobalFoundries. This node shrink has massive implications for density and efficiency. The W7900 packs 57,700 million transistors on a 529 mm² die, yielding a transistor density of 109.1M per mm². The Vega 56, by comparison, has 12,500 million transistors on a 495 mm² die, giving a much lower density of 25.3M per mm². The newer node allows the W7900 to fit more than four times the transistor count on a similar physical area.

The compute architecture also differs in fundamental ways. The W7900 has 6,144 shading units, 384 texture mapping units, and 192 render output units. The Vega 56 has 3,584 shading units, 224 texture mapping units, and 64 render output units. The W7900 also introduces 96 ray tracing cores, while the Vega 56 has no dedicated ray tracing hardware at all. Neither card has tensor cores listed.

The FP32 and FP16 processing capabilities reflect these differences. The W7900 delivers 61.32 TFLOPS FP32 and 61.32 TFLOPS FP16 with a 1:1 ratio. The Vega 56 delivers 8.96 TFLOPS FP32 and 17.92 TFLOPS FP16 with a 2:1 ratio. The W7900's FP16 performance is much higher in absolute terms, but the Vega 56's ratio means it processes half-precision at twice the rate of single-precision, whereas the W7900 processes both at the same rate.

The bus interface differs too. The W7900 uses PCIe 4.0 x16, while the Vega 56 uses PCIe 3.0 x16. For bandwidth-heavy workloads, the newer PCIe generation offers more headroom for data transfers to the host system.

Specification Differences

The memory subsystem shows one of the most dramatic differences. The W7900 has 48 GB of GDDR6 on a 384-bit bus, delivering 864.0 GB/s of bandwidth. The Vega 56 has 8 GB of HBM2 on a 2048-bit bus, delivering 402.4 GB/s. The W7900 has six times more memory capacity and more than double the bandwidth.

Clock speeds differ substantially as well. The W7900 runs at a base clock of 1760 MHz and a boost clock of 2495 MHz. The Vega 56 runs at a base of 1138 MHz and a boost of 1250 MHz. The memory clocks also differ: the W7900's memory runs at 2250 MHz with 18 Gbps effective, while the Vega 56's memory runs at 786 MHz with 1572 Mbps effective.

Pixel and texture rates scale accordingly. The W7900 achieves a pixel rate of 479.0 GPixel/s and a texture rate of 958.1 GTexel/s. The Vega 56 achieves 80.00 GPixel/s and 280.0 GTexel/s. The W7900 is 6 times faster at pixel output and 3.4 times faster at texture output.

The power profiles are very different. The W7900 has a TDP of 295 W, requires a triple-slot cooler, and needs 2x 8-pin power connectors plus a suggested 600 W PSU. The Vega 56 has a TDP of 210 W, uses an IGP slot width, and needs no power connectors, with no suggested PSU listed. The W7900 is physically larger: 280 mm long, 110 mm high, and 51 mm wide, while the Vega 56 has no dimensions listed.

Display outputs also differ. The W7900 offers 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1. The Vega 56 offers 1x HDMI 2.0b and 3x DisplayPort 1.4a. The API support also differs: the W7900 supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the Vega 56 supports DirectX 12 (12_1) and Vulkan 1.3. Both support OpenGL 4.6.

The release dates are far apart. The W7900 was released on 2023-05-25, while the Vega 56 dates to 2017-08-13. The W7900's predecessor is listed as "Radeon Pro Vega," with no successor. The Vega 56 has no predecessor or successor listed. The W7900 is Active production; the Vega 56 is End-of-life.

The Verdict

The data points to a decisive choice for most workloads. The AMD Radeon PRO W7900 outperforms the AMD Radeon Pro Vega 56 by 36.2% in OpenCL and 107.7% in Vulkan. It holds higher percentile placement, with the W7900 at 94% versus the Vega 56 at 89%. The W7900 also has significantly more memory (48 GB versus 8 GB), higher bandwidth (864.0 GB/s versus 402.4 GB/s), and several more recent features like ray tracing cores and PCIe 4.0 support.

The Vega 56 is not without its merits. It is a lower power draw at 210 W versus 295 W, and it uses an IGP slot configuration, meaning it can fit into systems where a triple-slot card will not. Its HBM2 memory, while slower, is still capable. But for pure compute or graphics performance, the W7900 clearly dominates.

The W7900's advantage in Vulkan is especially notable. This API is increasingly used in professional and scientific applications, and the 107.7% lead suggests that the W7900's architecture handles the low-level API much more efficiently. The OpenCL lead, while smaller, still shows a 36.2% advantage.

The Vega 56 is an end-of-life product with no successor listed. The W7900 is active production, meaning it is the current generation product. For any new deployment, the W7900 is the reasonable choice from a performance perspective.

That said, the Vega 56 still occupies the 89th percentile, so it is not a slow card by any means. It has a Metal score in the database, which the W7900 does not, so users specifically targeting Metal workloads might find the Vega 56 relevant. But for OpenCL or Vulkan, the W7900 is the clear winner.

Where Each One Wins

The AMD Radeon PRO W7900 wins in the following scenarios:

• OpenCL compute: 36.2% ahead of the Vega 56 (84,379 versus 61,930). For compute-heavy workloads using this API, the W7900 is the better choice.
• Vulkan graphics: 107.7% ahead of the Vega 56 (137,070 versus 66,004). This massive margin makes the W7900 the strong choice for Vulkan-based rendering or compute tasks.
• Memory bandwidth: With 864.0 GB/s versus 402.4 GB/s and 48 GB versus 8 GB, the W7900 is better suited for large datasets and high-bandwidth tasks.
• Pixel and texture throughput: The 479.0 GPixel/s and 958.1 GTexel/s of the W7900 far exceed the 80.00 GPixel/s and 280.0 GTexel/s of the Vega 56, making the W7900 faster in fill-rate-bound tasks.
• Ray tracing: The W7900's 96 ray cores provide hardware acceleration that the Vega 56 lacks entirely.

The AMD Radeon Pro Vega 56 wins in the following areas:

• Power efficiency: The Vega 56 draws 210 W versus 295 W for the W7900, making it more power-conscious for constraints.
• Physical footprint: The Vega 56 uses an IGP slot configuration and needs no additional power connectors, making it suitable for systems with limited space or power delivery. The W7900 is a triple-slot card that requires 2x 8-pin connectors and a 600 W PSU.
• Metal API: The Vega 56 has a recorded Geekbench Metal score of 63,145, while the W7900 has no Metal score in the database. For macOS or Metal-specific workloads, the Vega 56 has a data point to consider.

For most users, the W7900's performance advantages are overwhelming. For those with strict power or space constraints, or those specifically using the Metal API, the Vega 56 remains a viable option. The data suggests that the W7900 is the modern choice for compute and graphics performance, while the Vega 56 maintains relevance only in niche scenarios.