AMD Radeon PRO W7900 vs NVIDIA GB10 Comparison

The NVIDIA GB10 and AMD Radeon PRO W7900 are two workstation-class accelerators that target different corners of the professional market. The data shows a split decision across the two available benchmark suites, with each card claiming a decisive victory in one test while trailing significantly in the other. This analysis walks through the raw numbers, architectural divergences, and practical implications for system builders.

Head-to-Head Benchmarks

The Geekbench OpenCL workload delivers a dominant win for the NVIDIA GB10. The GB10 scores 120,137 points, while the Radeon PRO W7900 manages 84,379 points. That is a 42.4% advantage for the NVIDIA part, a massive margin that underscores the GB10’s compute-oriented design. In this test, the GB10 also edges out its closest rival, the NVIDIA RTX 4000 SFF Ada Generation, by 0.3%, and sits 2.6% above the Tesla V100 SXM2 16 GB. The W7900, by contrast, falls 3.2% behind that same Tesla V100 in its own average, showing that the AMD card is not competitive in this particular OpenCL scenario.

The Vulkan test flips the script entirely. Here, the AMD Radeon PRO W7900 scores 137,070 points, beating the GB10’s 114,648 by 16.4%. This is the W7900’s strongest showing, and it aligns with the card’s higher peak throughput figures. The GB10’s Vulkan result, while lower than the W7900’s, still contributes to an average benchmark score of 117,393, which places it in the 95th percentile of all GPUs. The W7900’s average of 110,725 lands in the 94th percentile, a narrower gap than the individual test deltas might suggest.

Looking at the nearestRivals data, the two cards occupy similar competitive territory despite their divergent test results. The GB10’s average score is 0.3% above the RTX 4000 SFF Ada Generation and 1.3% below the AMD Radeon PRO W7700. The W7900, meanwhile, sits 1% above the Radeon Pro Vega II and 2.8% below the RTX A5500 Mobile. The head-to-head record is a clean 1-1 split, but the magnitude of each win matters: the GB10’s OpenCL victory is more than twice as large (42.4% vs. 16.4%) as the W7900’s Vulkan win.

Architecture Differences

The GB10 is built on NVIDIA’s Blackwell 2.0 architecture, using the GB20B chip on a 5 nm TSMC process. The W7900 uses AMD’s RDNA 3.0 architecture, with the Navi 31 chip codenamed Plum Bonito, also on a 5 nm TSMC node. Both cards ship with 6,144 shading units and 384 texture mapping units, but the similarities end there.

The GB10’s die measures 382 mm², while the W7900’s is substantially larger at 529 mm². The W7900 packs 57,700 million transistors, yielding a density of 109.1M per mm²; the GB10’s transistor count is listed as unknown. Memory configurations diverge sharply: the GB10 offers 128 GB of LPDDR5X on a 256-bit bus, delivering 273.2 GB/s of bandwidth. The W7900 provides 48 GB of GDDR6 on a 384-bit bus, with 864.0 GB/s of bandwidth. The AMD card has a 3.2x bandwidth advantage, which likely explains its Vulkan performance lead.

Clock speeds also differ. The GB10 runs at a 1665 MHz base and 2418 MHz boost, with memory at 1067 MHz (8.5 Gbps effective). The W7900 boosts higher at 2495 MHz from a 1760 MHz base, with memory at 2250 MHz (18 Gbps effective). The W7900’s higher clocks and wider memory bus contribute to its superior pixel rate of 479.0 GPixel/s versus the GB10’s 116.1 GPixel/s, and its texture rate of 958.1 GTexel/s versus 928.5 GTexel/s.

Compute capabilities are inverted relative to the benchmarks. The GB10 delivers 29.71 TFLOPS for both FP32 and FP16 (1:1), while the W7900 offers 61.32 TFLOPS for both, more than double the raw throughput. The GB10 counters with 384 tensor cores, a feature the W7900 lacks entirely, and includes 48 RT cores versus the W7900’s 96. The GB10’s TDP is 140 W, making it an integrated graphics processor (IGP) with no power connectors and a 300 W suggested PSU. The W7900 is a triple-slot card requiring 2x 8-pin connectors and a 600 W PSU.

FAQ

Q: Which card has more memory bandwidth?

A: The AMD Radeon PRO W7900, with 864.0 GB/s across a 384-bit bus, compared to the NVIDIA GB10’s 273.2 GB/s on a 256-bit bus. That is a 3.2x advantage for the AMD card.

Q: Why does the GB10 win OpenCL despite having half the FP32 throughput?

A: The GB10’s 120,137 OpenCL score comes from its Blackwell 2.0 architecture and 384 tensor cores, which likely accelerate the workload differently than raw shader throughput. The W7900’s 61.32 TFLOPS FP32 capability did not translate to OpenCL performance, as it scored only 84,379 in that test.

Q: Can the GB10 be installed in a standard desktop PC?

A: Yes, but with caveats. The GB10 is an IGP with no power connectors, a 140 W TDP, and a suggested PSU of 300 W. It uses a PCIe 5.0 x16 interface and measures 150 mm by 51 mm by 150 mm, so it fits in most chassis.

Q: What API support does each card offer?

A: The W7900 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The GB10 lists “N/A” for DirectX, OpenGL, and Vulkan in the spec data, which may indicate specialized compute-only drivers or limited API exposure.

Q: How do the two cards compare in overall percentile ranking?

A: The GB10 is in the 95th percentile of all GPUs with an average score of 117,393. The W7900 is in the 94th percentile with an average of 110,725. The GB10 holds a 6,668-point average advantage.

Q: Which card has more render output units?

A: The AMD Radeon PRO W7900 has 192 ROPs, quadruple the GB10’s 48 ROPs. This contributes to the W7900’s much higher pixel rate of 479.0 GPixel/s versus 116.1 GPixel/s.

The Verdict

The data points to two distinct profiles. The NVIDIA GB10 is the better choice for OpenCL-heavy compute workloads, where its 42.4% lead over the W7900 is decisive. It also offers 128 GB of memory, which is 2.7x the W7900’s 48 GB, and does so within a 140 W power envelope that requires no external connectors. The GB10’s 95th percentile ranking and higher average score (117,393 vs. 110,725) reinforce its position as the more consistent performer across the two tests.

The AMD Radeon PRO W7900 is the pick for Vulkan-based applications and scenarios where raw memory bandwidth is critical. Its 864.0 GB/s bandwidth and 61.32 TFLOPS FP32 compute are unmatched by the GB10, and its 16.4% Vulkan victory demonstrates real strength in that API. The W7900 also offers 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1 outputs, while the GB10 lists only a single HDMI port. For users needing multi-display setups or working with Vulkan renderers, the W7900 is the data-backed choice.

For pure compute density and power efficiency, the GB10 wins. For bandwidth-bound graphics and Vulkan performance, the W7900 wins.

Specification Differences

The two cards differ in almost every measurable spec. The GB10 uses the GB20B chip with Blackwell 2.0 architecture; the W7900 uses Navi 31 with RDNA 3.0. The GB10’s die is 382 mm², the W7900’s is 529 mm². Transistor counts are 57,700 million for the W7900, unknown for the GB10. The GB10 has 128 GB LPDDR5X, the W7900 has 48 GB GDDR6. Bus widths are 256-bit versus 384-bit. Bandwidth is 273.2 GB/s versus 864.0 GB/s.

Clock speeds: the GB10 runs at 1665 MHz base and 2418 MHz boost; the W7900 at 1760 MHz base and 2495 MHz boost. Memory clocks are 1067 MHz (8.5 Gbps) for the GB10 and 2250 MHz (18 Gbps) for the W7900. ROPs are 48 versus 192. RT cores are 48 versus 96. Tensor cores exist only on the GB10 (384). Pixel rates are 116.1 GPixel/s versus 479.0 GPixel/s. Texture rates are 928.5 GTexel/s versus 958.1 GTexel/s. FP32 and FP16 are 29.71 TFLOPS versus 61.32 TFLOPS.

Power and physical specs diverge completely. The GB10 is a 140 W IGP with no power connectors and a 300 W suggested PSU; the W7900 is a 295 W triple-slot card with 2x 8-pin connectors and a 600 W suggested PSU. Bus interfaces are PCIe 5.0 x16 for the GB10 and PCIe 4.0 x16 for the W7900. Display outputs are 1x HDMI for the GB10 versus 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1 for the W7900. Dimensions: the GB10 is 150 mm long, 51 mm high, and 150 mm wide; the W7900 is 280 mm long, 110 mm high, and 51 mm wide. Release dates are 2025-10-14 for the GB10 and 2023-05-25 for the W7900. Both list a launch MSRP of 3,999 USD.

Where Each One Wins

The NVIDIA GB10 wins in OpenCL compute, average benchmark score, memory capacity, power efficiency, and physical footprint. Its 140 W TDP and IGP form factor make it suitable for dense server environments where space and cooling are constrained. The 128 GB memory pool is the largest in this comparison, and the PCIe 5.0 x16 interface provides a newer bus standard. The GB10 also holds a 95th percentile ranking, one point above the W7900.

The AMD Radeon PRO W7900 wins in Vulkan performance, raw FP32/FP16 throughput, memory bandwidth, pixel rate, ROP count, and RT core count. Its 864.0 GB/s bandwidth is 3.2x the GB10’s, and its 61.32 TFLOPS FP32 is more than double. The W7900’s 192 ROPs and 479.0 GPixel/s pixel rate indicate stronger rasterization capabilities. It also offers more display outputs, supporting up to four monitors via DisplayPort 2.1. For applications that leverage Vulkan, high-bandwidth memory, or multi-display output, the W7900 is the clear winner.