AMD Radeon Pro Vega 56 vs AMD Radeon VII Comparison

AMD Radeon VII and AMD Radeon Pro Vega 56 are both end-of-life AMD graphics cards built on the GCN architecture, but they represent very different execution of that design. The Radeon VII is the newer, faster, and larger card, while the Radeon Pro Vega 56 is a more power-efficient, integrated part. Benchmark data shows a clear and consistent performance gap between the two, with the Radeon VII winning every single head-to-head comparison in the database.

Head-to-Head Benchmarks

The benchmark results are unambiguous: the AMD Radeon VII outperforms the AMD Radeon Pro Vega 56 in all three shared tests. The largest margin comes in the Geekbench OpenCL test, where the Radeon VII scores 91947 against the Pro Vega 56's 61930, a massive 48.5% advantage. This test is particularly sensitive to raw compute throughput, and the Radeon VII's higher FP32 and FP16 ratings (13.44 TFLOPS and 26.88 TFLOPS respectively, versus 8.960 TFLOPS and 17.92 TFLOPS) explain the scale of the win.

The Geekbench Vulkan test shows a similarly dominant result, with the Radeon VII scoring 91788 compared to the Pro Vega 56's 66004, a 39.1% lead. This is a significant margin that suggests the Radeon VII handles modern graphics API workloads with substantially more headroom. The narrowest, though still decisive, win comes in the Geekbench Metal test, where the Radeon VII scores 77975 against 63145 for the Pro Vega 56, a 23.5% advantage. While this is the smallest relative gap, it still represents a clear tier of separation between the two GPUs.

Looking at the broader context, the Radeon VII's average benchmark score of 66004 places it in the 90th percentile of all GPUs, while the Pro Vega 56's average of 63693 puts it in the 89th percentile. The Radeon VII's nearest rival is the NVIDIA Tesla T4, which scores 66733, a 1.1% difference. The Pro Vega 56 sits close to the AMD Radeon RX 7600M, which scores 63775, a 0.1% difference. In direct comparison, the Radeon VII's 66004 average score is roughly 3.6% higher than the Pro Vega 56's 63693, a modest overall gap that understates the dramatic differences seen in individual compute-heavy tests.

The Verdict

The data points to a simple conclusion: if performance is the only criterion, the AMD Radeon VII is the superior card. It wins every benchmark by a substantial margin, with the smallest lead being 23.5% in Metal and the largest being 48.5% in OpenCL. The Radeon VII also offers double the memory capacity (16 GB versus 8 GB) and nearly triple the memory bandwidth (1.02 TB/s versus 402.4 GB/s), making it the clear choice for large datasets and high-resolution textures.

However, the Radeon Pro Vega 56 has its own advantages that may matter more than raw speed in specific contexts. It consumes 210 W versus the Radeon VII's 295 W, a meaningful difference for system builders with power constraints or smaller power supplies. It also has an "IGP" slot width and requires no power connectors, whereas the Radeon VII is a dual-slot card needing 2x 8-pin connectors. This makes the Pro Vega 56 far easier to integrate into a compact or pre-existing system.

The choice comes down to whether raw performance or system integration is the priority. For anyone building a dedicated high-performance workstation where power and space are not limiting factors, the Radeon VII is the only rational pick based on this data. For upgrades into constrained systems, the Pro Vega 56 is the more practical, albeit slower, option.

Where Each One Wins

The AMD Radeon VII wins in every measurable performance category. It achieves higher pixel rate (112.0 GPixel/s versus 80.00 GPixel/s) and texture rate (420.0 GTexel/s versus 280.0 GTexel/s), directly translating to better fill-rate-bound workloads like high-resolution rendering. Its FP32 and FP16 compute are 50% and 50% higher respectively, which is a major advantage for scientific computing, machine learning inference, and any workload that leverages these instructions. The doubled memory size and 2.5x bandwidth advantage make it the superior choice for 4K texture packs, large simulation datasets, and multi-tasking with multiple GPU-accelerated applications.

The AMD Radeon Pro Vega 56 wins in the practical categories of power and physical footprint. Its 210 W TDP is 85 W lower than the Radeon VII's 295 W, which simplifies cooling and reduces power supply requirements. It does not require any power connectors, while the Radeon VII needs 2x 8-pin. As an IGP-class part with no listed dimensions, it is designed for integration into a system board or a specific chassis, whereas the Radeon VII is a 280 mm long, 125 mm tall, 40 mm wide expansion card. The Pro Vega 56 also has a lower base clock (1138 MHz versus 1400 MHz) and boost clock (1250 MHz versus 1750 MHz), which contributes to its power efficiency.

FAQ

Q: Which card is faster in Geekbench OpenCL?

A: The AMD Radeon VII is significantly faster, scoring 91947 compared to the Radeon Pro Vega 56's 61930, a 48.5% difference.

Q: Does the Radeon VII have more memory bandwidth?

A: Yes, the Radeon VII has 1.02 TB/s of bandwidth with a 4096-bit bus, while the Radeon Pro Vega 56 has 402.4 GB/s with a 2048-bit bus.

Q: What is the power consumption difference?

A: The Radeon Pro Vega 56 has a 210 W TDP, while the Radeon VII has a 295 W TDP. The Pro Vega 56 also requires no power connectors, whereas the Radeon VII needs 2x 8-pin.

Q: Which card has a higher average benchmark score?

A: The Radeon VII has an average benchmark score of 66004, placing it in the 90th percentile. The Pro Vega 56 has an average of 63693, placing it in the 89th percentile.

Q: Are there any benchmarks where the Pro Vega 56 wins?

A: No, the head-to-head data shows the Radeon VII winning all three shared tests: Metal, OpenCL, and Vulkan.

Q: What is the memory capacity of each card?

A: The Radeon VII has 16 GB of HBM2 memory, while the Radeon Pro Vega 56 has 8 GB of HBM2 memory.

Architecture Differences

The two cards are built on different generations of the Graphics Core Next architecture. The AMD Radeon VII uses GCN 5.1, while the Radeon Pro Vega 56 uses GCN 5.0. This architectural generation gap is paired with a significant manufacturing process difference: the Radeon VII is fabricated on a 7 nm process at TSMC, while the Pro Vega 56 uses a 14 nm process at GlobalFoundries. This process shrink allows the Radeon VII to pack 13,230 million transistors into a 331 mm² die, yielding a transistor density of 40.0M / mm². The Pro Vega 56 has 12,500 million transistors on a much larger 495 mm² die, resulting in a lower density of 25.3M / mm².

The Radeon VII uses the Vega 20 chip, while the Pro Vega 56 uses the Vega 10 chip. The Radeon VII's newer architecture and process node enable higher clock speeds: its base clock is 1400 MHz and boost clock is 1750 MHz, compared to the Pro Vega 56's 1138 MHz base and 1250 MHz boost. Both cards support the same API levels (DirectX 12_1, OpenGL 4.6, and Vulkan 1.3) and lack dedicated ray tracing or tensor cores. The Radeon VII's memory runs at 1000 MHz (2 Gbps effective), while the Pro Vega 56's memory runs at 786 MHz (1572 Mbps effective).

Specification Differences

The most obvious specification difference is memory. The Radeon VII has 16 GB of HBM2 on a 4096-bit bus, delivering 1.02 TB/s bandwidth. The Pro Vega 56 has 8 GB of HBM2 on a 2048-bit bus, delivering 402.4 GB/s. This affects not only capacity but also the speed at which data can be moved to and from the GPU.

Compute resources also differ. The Radeon VII has 3840 shading units, 240 texture mapping units, and 64 ROPs. The Pro Vega 56 has 3584 shading units, 224 TMUs, and 64 ROPs. This translates to higher theoretical pixel rate (112.0 GPixel/s versus 80.00 GPixel/s) and texture rate (420.0 GTexel/s versus 280.0 GTexel/s) for the Radeon VII.

Physical and power specifications diverge sharply. The Radeon VII is a dual-slot card measuring 280 mm x 125 mm x 40 mm, with a 295 W TDP, requiring a 600 W suggested power supply and 2x 8-pin power connectors. The Pro Vega 56 is an IGP-class part with no listed dimensions, a 210 W TDP, no power connectors, and no suggested PSU rating. The Radeon VII has a launch MSRP of 699 USD, while the Pro Vega 56 has no launch MSRP listed. Both cards use a PCIe 3.0 x16 interface and have the same display outputs (1x HDMI 2.0b and 3x DisplayPort 1.4a).