AMD Radeon Pro W6900X vs NVIDIA RTX PRO 5000 Blackwell Comparison

NVIDIA RTX PRO 5000 Blackwell decisively outperforms the AMD Radeon Pro W6900X in every shared benchmark, with the NVIDIA card leading by 95.4% in Geekbench OpenCL and 89.9% in Geekbench Vulkan. The data shows a generational gap between NVIDIA’s Blackwell 2.0 architecture and AMD’s RDNA 2.0, with the RTX PRO 5000 landing in the 98th percentile of all GPUs versus the W6900X’s 97th percentile.

Head-to-Head Benchmarks

The two directly comparable tests paint a lopsided picture. In Geekbench OpenCL, the RTX PRO 5000 Blackwell scores 254,116 against the W6900X’s 130,035 — a 95.4% advantage. That is nearly double the AMD card’s output, and it reflects the NVIDIA card’s massive compute resource advantage: 14,080 shading units versus 5,120, and 66.94 TFLOPS of FP32 throughput against 22.23 TFLOPS. OpenCL workloads that scale with raw shader count will favor NVIDIA overwhelmingly.

Geekbench Vulkan shows a similar story, with NVIDIA scoring 282,631 versus AMD’s 148,865, a delta of 89.9%. This is the NVIDIA card’s best absolute score across its benchmark suite, beating even its own OpenCL result by 11.2%. The W6900X, by contrast, scores lower in Vulkan than in OpenCL, suggesting its driver stack or hardware scheduling favors OpenCL relatively more. NVIDIA’s 440 tensor cores and 110 RT cores provide additional compute paths that AMD’s card lacks entirely — the W6900X has no tensor core equivalent.

The average benchmark score reinforces the gap: the RTX PRO 5000 averages 182,109 across its tests, while the W6900X averages 168,574. That 8.0% average difference is smaller than the individual OpenCL and Vulkan deltas because NVIDIA’s average includes its 3DMark Steel Nomad DX12 result of 9,579.5, which is a lower-magnitude score that pulls the mean down. The W6900X’s Metal score of 226,821 — a test NVIDIA doesn’t share — boosts its average but cannot close the gap.

Where Each One Wins

The RTX PRO 5000 Blackwell wins every head-to-head contest in the data. It takes Geekbench OpenCL by 95.4% and Geekbench Vulkan by 89.9%. Beyond those direct comparisons, its 3DMark Steel Nomad DX12 score of 9,579.5 suggests strong DirectX 12 Ultimate performance, a workload where the W6900X has no corresponding entry. The NVIDIA card also leads in memory bandwidth by a wide margin: 1.34 TB/s versus 512.0 GB/s, a 2.6x difference that will show up in bandwidth-bound tasks like large dataset manipulation or high-resolution texture streaming.

The W6900X has no benchmark wins in the shared tests. Its only distinctive data point is Geekbench Metal at 226,821, which is higher than its own OpenCL score of 130,035 by 74.5% and its Vulkan score of 148,865 by 52.4%. That Metal result, however, does not appear in the head-to-head comparison, and the card’s overall percentile rank of 97 versus NVIDIA’s 98 shows it remains a capable GPU but not a class leader. Where the W6900X might still serve is in Apple MPX environments — its bus interface is Apple MPX and its display outputs are 1x HDMI 2.1 plus 4x Thunderbolt, making it a Mac-specific solution that the PCIe 5.0 x16 NVIDIA card cannot directly replace.

Architecture Differences

The architectural chasm is stark. NVIDIA uses the GB202 chip on a 5 nm TSMC process with 92,200 million transistors on a 750 mm² die, achieving a transistor density of 122.9M per mm². AMD’s Navi 21 is built on 7 nm TSMC with 26,800 million transistors on a 520 mm² die, for a density of 51.5M per mm². That means NVIDIA packs 3.4x more transistors into a die that is only 44% larger by area. The density advantage is a direct result of the newer process node.

Core counts amplify the difference. NVIDIA fields 14,080 shading units, 440 TMUs, and 160 ROPs, versus AMD’s 5,120 shading units, 320 TMUs, and 128 ROPs. NVIDIA’s RT core count of 110 dwarfs AMD’s 80, and NVIDIA adds 440 tensor cores where AMD has none. The FP32 compute rates tell the story: 66.94 TFLOPS for NVIDIA versus 22.23 TFLOPS for AMD. In FP16, NVIDIA maintains a 1:1 ratio at 66.94 TFLOPS, while AMD doubles to 44.46 TFLOPS via a 2:1 rate — but even AMD’s best FP16 number is 33.6% below NVIDIA’s FP16 output.

Memory architecture differs fundamentally. NVIDIA uses 48 GB of GDDR7 on a 384-bit bus, delivering 1.34 TB/s. AMD uses 32 GB of GDDR6 on a 256-bit bus, delivering 512.0 GB/s. The NVIDIA card has 50% more capacity and 162% more bandwidth. Both cards draw 300 W and suggest a 700 W PSU, but NVIDIA’s higher performance at equal power indicates superior efficiency per watt.

Specification Differences

The two cards diverge on nearly every measurable specification. Process node: 5 nm versus 7 nm. Transistors: 92,200 million versus 26,800 million. Die size: 750 mm² versus 520 mm². Base clock: 1740 MHz versus 1825 MHz — AMD actually starts higher, but NVIDIA’s boost clock of 2377 MHz beats AMD’s 2171 MHz. Memory speed: 1750 MHz (28 Gbps effective) versus 2000 MHz (16 Gbps effective). Memory type: GDDR7 versus GDDR6. Bus width: 384-bit versus 256-bit.

Pixel fill rate goes to NVIDIA at 380.3 GPixel/s versus 277.9 GPixel/s. Texture fill rate: 1,045.9 GTexel/s versus 694.7 GTexel/s. The RTX PRO 5000 has a dual-slot form factor with a 1x 16-pin power connector, while the W6900X lists no slot width or power connector data. Bus interface: PCIe 5.0 x16 versus Apple MPX. Display outputs: 4x DisplayPort 2.1b versus 1x HDMI 2.1 and 4x Thunderbolt. Physical dimensions: both are 267 mm long, but NVIDIA is 111 mm tall and 40 mm wide, while AMD is 120 mm tall with no width listed.

The production status differs completely: NVIDIA is Active, AMD is End-of-life. Release dates are nearly four years apart: NVIDIA on 2025-03-17, AMD on 2021-08-02. API support is identical — both offer DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4 — so software compatibility is not a differentiator.

FAQ

Q: Which card has higher raw compute performance?

A: The NVIDIA RTX PRO 5000 Blackwell delivers 66.94 TFLOPS FP32 versus the AMD Radeon Pro W6900X’s 22.23 TFLOPS, a 3.0x advantage. In FP16, NVIDIA maintains 66.94 TFLOPS (1:1) while AMD reaches 44.46 TFLOPS (2:1).

Q: How do memory capacities and bandwidth compare?

A: NVIDIA offers 48 GB of GDDR7 on a 384-bit bus with 1.34 TB/s bandwidth. AMD offers 32 GB of GDDR6 on a 256-bit bus with 512.0 GB/s bandwidth. NVIDIA has 50% more capacity and 162% more bandwidth.

Q: Are both cards still in production?

A: No. The NVIDIA RTX PRO 5000 Blackwell has an Active production status with a 2025-03-17 release date. The AMD Radeon Pro W6900X is End-of-life, having been released on 2021-08-02.

Q: Which card performs better in Geekbench OpenCL?

A: NVIDIA scores 254,116 versus AMD’s 130,035, a 95.4% difference. This is the largest margin in any shared benchmark.

Q: Do both cards support the same graphics APIs?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. However, NVIDIA also has a 3DMark Steel Nomad DX12 score of 9,579.5, while AMD’s only unique benchmark is Geekbench Metal at 226,821.

Q: What is the average benchmark score difference?

A: The NVIDIA card averages 182,109 across its benchmarks, while AMD averages 168,574. NVIDIA leads by 8.0% on average, though individual test deltas are much larger.

The Verdict

The data leaves no ambiguity: the NVIDIA RTX PRO 5000 Blackwell is the superior GPU for anyone who needs maximum compute throughput. It wins both shared benchmarks by margins of roughly 90–95%, offers 3x the FP32 performance, 3x the shader count, and 2.6x the memory bandwidth. Its 48 GB of GDDR7 memory doubles AMD’s capacity in practical terms, and its active production status means ongoing availability. The 98th percentile ranking versus AMD’s 97th percentile is a narrow overall gap, but the specific test deltas are anything but narrow.

The AMD Radeon Pro W6900X still has a role, but it is narrow and platform-specific. Its Apple MPX bus interface and 4x Thunderbolt outputs make it a native fit for Mac Pro systems, and its Metal score of 226,821 shows it handles Apple’s graphics API well. Its 32 GB of GDDR6 is sufficient for many professional workloads, and its 300 W power draw matches NVIDIA’s. But it is end-of-life, built on an older 7 nm process with 26,800 million transistors versus NVIDIA’s 92,200 million, and it cannot compete on any shared metric.

Choose the NVIDIA RTX PRO 5000 Blackwell for Windows/Linux workstations, for AI-adjacent tasks that can use its 440 tensor cores, for large memory footprints, or for any workload where OpenCL and Vulkan performance matter. Choose the AMD Radeon Pro W6900X only if you are locked into an Apple MPX ecosystem and require Thunderbolt display outputs — and even then, be aware that its 130,035 OpenCL score is less than half of NVIDIA’s 254,116. The verdict is straightforward: NVIDIA wins on performance, capability, and longevity. AMD wins only on platform compatibility, and that advantage is shrinking as the card ages out of production.