AMD Radeon Pro Vega II vs AMD Radeon PRO W7900 Comparison

AMD Radeon PRO W7900 and AMD Radeon Pro Vega II are both 94th-percentile workstation GPUs, but they achieve that status through very different means. The W7900 is a modern RDNA 3.0 part with a 5 nm process, while the Vega II is an older GCN 5.1 design on 7 nm. Their average benchmark scores are nearly identical—110,725 for the W7900 versus 109,617 for the Vega II, a 1% gap—yet the underlying architecture and workload strengths could not be more different. This analysis breaks down where each card wins, what separates them internally, and which one makes sense for your specific workflow.

Where Each One Wins

The data splits cleanly by API. The Vega II wins the OpenCL benchmark decisively, scoring 99,048 against the W7900’s 84,379—a 14.8% advantage. This is a substantial margin for a legacy architecture, suggesting that OpenCL compute workloads that are not heavily optimized for newer instruction sets still favor the older card’s raw compute layout. If your applications rely on OpenCL for rendering, simulation, or scientific compute, the Vega II’s lead here is worth serious consideration.

The W7900 dominates Vulkan, scoring 137,070 versus the Vega II’s 99,621—a 37.6% advantage. This is a massive generational leap, reflecting RDNA 3.0’s modern geometry, rasterization, and scheduling improvements. Any workload that leverages Vulkan—game engines, real-time rendering, or Vulkan-based compute—will see a dramatic performance uplift on the W7900. The W7900 also holds a slight edge in average benchmark score overall (110,725 vs 109,617), but the real story is that each card wins one head-to-head benchmark, making the choice purely workload-dependent.

Architecture Differences

The W7900 uses the Navi 31 chip on TSMC’s 5 nm process, packing 57,700 million transistors into a 529 mm² die. This gives a transistor density of 109.1 million per mm², a staggering figure compared to the Vega II’s 40.0 million per mm². The Vega II, built on Vega 20 with 13,230 million transistors on 331 mm², uses the older GCN 5.1 architecture. This is a fundamental difference: RDNA 3.0 is designed for high clock speeds and efficiency, while GCN 5.1 was built for wide compute pipelines.

Clock speeds reflect this. The W7900 runs at a 1760 MHz base and 2495 MHz boost, while the Vega II sits at 1574 MHz base and 1720 MHz boost. The W7900’s higher clocks translate directly to its FP32 performance: 61.32 TFLOPS versus the Vega II’s 14.09 TFLOPS—a 4.3x difference. The W7900 also has more shading units (6144 vs 4096), more TMUs (384 vs 256), and far more ROPs (192 vs 64). The Vega II does have a notable FP16 advantage in ratio—28.18 TFLOPS at 2:1 versus the W7900’s 61.32 TFLOPS at 1:1—but the W7900 still outputs more raw FP16 throughput.

Memory is another stark divide. The W7900 uses 48 GB of GDDR6 on a 384-bit bus, delivering 864.0 GB/s bandwidth. The Vega II uses 32 GB of HBM2 on a massive 4096-bit bus, yielding 825.3 GB/s. The W7900 has more capacity and slightly higher bandwidth, but the Vega II’s HBM2 offers different latency characteristics. The W7900 also adds 96 ray tracing cores, which the Vega II lacks entirely—a feature that matters for any RT-accelerated workload.

Head-to-Head Benchmarks

The OpenCL result is the Vega II’s crowning achievement. It scores 99,048 against the W7900’s 84,379, a 14.8% delta. This is counterintuitive given the W7900’s 4.3x FP32 advantage, but OpenCL on GCN has historically been well-optimized, and the Vega II’s 4096-bit memory bus may help in memory-bound compute tasks. The W7900’s lower OpenCL score suggests that RDNA 3.0’s compute units do not scale as well under this legacy API, or that driver optimization for OpenCL has lagged behind Vulkan.

The Vulkan result flips the script entirely. The W7900 posts 137,070, a 37.6% advantage over the Vega II’s 99,621. This is the largest delta in either direction and underscores RDNA 3.0’s modern API support—DirectX 12 Ultimate (12_2) and Vulkan 1.4—versus the Vega II’s older DirectX 12 (12_1) and Vulkan 1.3. If you are running Vulkan-based workloads, the W7900 is not just faster; it is in a different performance class. The W7900 also wins the average benchmark comparison, but only by 1%, which is within noise for many applications.

FAQ

Q: Which card has better raw compute throughput?

A: The W7900 has 61.32 TFLOPS FP32 versus the Vega II’s 14.09 TFLOPS. For FP16, the W7900 outputs 61.32 TFLOPS (1:1), while the Vega II outputs 28.18 TFLOPS (2:1). In both cases, the W7900 is faster in absolute terms.

Q: How do the memory systems compare?

A: The W7900 has 48 GB of GDDR6 on a 384-bit bus with 864.0 GB/s bandwidth. The Vega II has 32 GB of HBM2 on a 4096-bit bus with 825.3 GB/s bandwidth. The W7900 offers more capacity and slightly higher bandwidth.

Q: Which card supports ray tracing?

A: Only the W7900 has dedicated ray tracing cores—96 of them. The Vega II has no ray tracing hardware, so any RT workload will only run on the W7900.

Q: What are the power requirements?

A: The W7900 has a 295 W TDP and requires a 600 W power supply. The Vega II has a 475 W TDP and requires an 850 W power supply. The W7900 is significantly more power-efficient.

Q: Which card is better for Vulkan-based applications?

A: The W7900 wins Vulkan by 37.6% (137,070 vs 99,621), making it the clear choice for any Vulkan workload. This is its single largest benchmark advantage.

Q: Does the Vega II have any advantage in the benchmarks?

A: Yes, the Vega II wins OpenCL by 14.8% (99,048 vs 84,379). It also has a Metal benchmark score of 130,183, which the W7900 does not have a comparable result for, suggesting Mac-specific workloads may favor the Vega II.

The Verdict

The data points to a clear split. If your work is built around Vulkan—real-time rendering, modern game engines, or Vulkan compute—the W7900 is the overwhelming choice. Its 37.6% Vulkan lead is decisive, and it adds ray tracing support that the Vega II simply lacks. The W7900’s higher clock speeds, larger memory pool, and newer architecture make it the future-proof option.

If your workflow is locked into OpenCL, the Vega II’s 14.8% advantage is real and significant. For legacy compute pipelines that have not migrated to Vulkan or CUDA-based alternatives, the Vega II may actually be the faster card despite being older and end-of-life. Its HBM2 memory and GCN compute layout clearly still have merit in specific OpenCL scenarios.

The W7900 is the better all-rounder, with a higher average benchmark score (110,725 vs 109,617) and modern API support. It is also far more power-efficient, requiring a 600 W PSU versus 850 W. The Vega II’s quad-slot cooler and 475 W TDP are punishing for any build. For most users, the W7900 is the practical pick. Only those with a hard requirement for OpenCL performance or Mac-specific workflows (via the Metal benchmark) should consider the Vega II, and even then, its end-of-life status is a serious concern.

Specification Differences

| Specification | AMD Radeon PRO W7900 | AMD Radeon Pro Vega II |

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

| Chip | Navi 31 | Vega 20 |

| Architecture | RDNA 3.0 | GCN 5.1 |

| Process Node | 5 nm | 7 nm |

| Transistors | 57,700 million | 13,230 million |

| Die Size | 529 mm² | 331 mm² |

| Base Clock | 1760 MHz | 1574 MHz |

| Boost Clock | 2495 MHz | 1720 MHz |

| Memory Size | 48 GB GDDR6 | 32 GB HBM2 |

| Memory Bus | 384 bit | 4096 bit |

| Memory Bandwidth | 864.0 GB/s | 825.3 GB/s |

| Shading Units | 6144 | 4096 |

| TMUs | 384 | 256 |

| ROPs | 192 | 64 |

| Ray Tracing Cores | 96 | None |

| FP32 Performance | 61.32 TFLOPS | 14.09 TFLOPS |

| FP16 Performance | 61.32 TFLOPS (1:1) | 28.18 TFLOPS (2:1) |

| TDP | 295 W | 475 W |

| Slot Width | Triple-slot | Quad-slot |

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

| Suggested PSU | 600 W | 850 W |

| Bus Interface | PCIe 4.0 x16 | Apple MPX |

| Display Outputs | 3x DP 2.1, 1x mini-DP 2.1 | 1x HDMI 2.0b, 4x Thunderbolt |

| DirectX | 12 Ultimate (12_2) | 12 (12_1) |

| Vulkan | 1.4 | 1.3 |

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

| Release Date | 2023-05-25 | 2019-06-02 |

| Launch MSRP | 3,999 USD | 2,199 USD |