NVIDIA GB10 vs NVIDIA RTX PRO 5000 Blackwell Comparison

NVIDIA’s Blackwell 2.0 architecture powers two very different products in the RTX PRO 5000 and the GB10. The RTX PRO 5000 is a 48 GB GDDR7 workstation card aimed at maximum throughput, while the GB10 is a 128 GB LPDDR5X integrated graphics processor (IGP) designed for server deployments. The data reveals a stark performance gulf, but the GB10’s massive memory pool and low power draw create a distinct niche.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA RTX PRO 5000 Blackwell has an average benchmark score of 182,109, while the NVIDIA GB10 scores 117,393. This places the RTX PRO 5000 at the 98th percentile of all GPUs, compared to the GB10’s 95th percentile.

Q: How do they compare in OpenCL and Vulkan performance?

A: In Geekbench OpenCL, the RTX PRO 5000 scores 254,116 versus the GB10’s 120,137, a 111.5% advantage. In Vulkan, the RTX PRO 5000 scores 282,631 versus 114,648, a larger 146.5% lead.

Q: What are the memory capacities and types?

A: The RTX PRO 5000 features 48 GB of GDDR7 with a 384-bit bus, delivering 1.34 TB/s bandwidth. The GB10 has 128 GB of LPDDR5X on a 256-bit bus, providing 273.2 GB/s bandwidth.

Q: Which card has a higher boost clock?

A: The GB10 has a higher boost clock at 2418 MHz, compared to the RTX PRO 5000’s 2377 MHz. However, the RTX PRO 5000 has a higher base clock at 1740 MHz versus 1665 MHz.

Q: What is the power consumption difference?

A: The RTX PRO 5000 has a TDP of 300 W and requires a 700 W power supply, while the GB10 has a TDP of 140 W and requires a 300 W power supply. The GB10 also uses no external power connectors.

Q: Do both support the same graphics APIs?

A: No. The RTX PRO 5000 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The GB10 has no supported graphics APIs listed (N/A for DirectX, OpenGL, and Vulkan).

Where Each One Wins

The RTX PRO 5000 Blackwell wins decisively in raw compute and graphics workloads. It holds a 111.5% advantage in OpenCL and a 146.5% advantage in Vulkan, making it the clear choice for tasks that demand high FP32 throughput, large shading unit counts, and fast memory access. Its 66.94 TFLOPS FP32 performance, 440 texture mapping units, and 160 ROPs are built for rendering, simulation, and AI inference where every millisecond counts.

The GB10 wins in capacity and efficiency. Its 128 GB memory pool is more than double the RTX PRO 5000’s 48 GB, which is critical for datasets that exceed the workstation card’s capacity. The GB10’s 140 W TDP means it can be deployed in dense server environments without the power and cooling overhead of a 300 W dual-slot card. It also has a higher boost clock (2418 MHz vs 2377 MHz), though this does not translate into benchmark wins.

The GB10’s niche is not speed but scale. For workloads that are memory-bound rather than compute-bound, such as hosting large language models or processing massive scientific datasets, the 128 GB pool is a significant asset. The RTX PRO 5000, in contrast, is the faster card for any task that fits within its 48 GB frame buffer.

Architecture Differences

Both GPUs are built on the Blackwell 2.0 architecture and use TSMC’s 5 nm process node, but they are fundamentally different chips. The RTX PRO 5000 uses the GB202 die, which measures 750 mm² and contains 92,200 million transistors. The GB10 uses the GB20B die, which is 382 mm², though its transistor count is listed as unknown. This size difference directly correlates with the RTX PRO 5000’s higher specifications.

The RTX PRO 5000 has 14,080 shading units, 440 tensor cores, and 110 RT cores. The GB10 has 6,144 shading units, 384 tensor cores, and 48 RT cores. The RTX PRO 5000 also has nearly double the TMUs (440 vs 384) and over three times the ROPs (160 vs 48). These numbers explain the performance gap: the RTX PRO 5000 can process more pixels and textures per clock, and its RT core count is more than double that of the GB10.

The memory subsystems are entirely different. The RTX PRO 5000 uses GDDR7 with a 384-bit interface, achieving 1.34 TB/s bandwidth. The GB10 uses LPDDR5X with a 256-bit interface, achieving 273.2 GB/s. This is roughly a 5x difference in memory bandwidth, which is a primary driver of the benchmark results. The GB10 compensates with a larger capacity (128 GB vs 48 GB), but the bandwidth constraint limits its compute performance.

Specification Differences

The two GPUs diverge significantly across nearly every specification. The RTX PRO 5000 has a base clock of 1740 MHz and a boost clock of 2377 MHz, while the GB10 has a base clock of 1665 MHz and a boost clock of 2418 MHz. The GB10’s boost clock is slightly higher, but this is offset by its lower core count.

Memory bandwidth is the largest gap: the RTX PRO 5000 delivers 1.34 TB/s versus the GB10’s 273.2 GB/s. Memory type also differs (GDDR7 vs LPDDR5X), as does memory speed (1750 MHz 28 Gbps effective vs 1067 MHz 8.5 Gbps effective). The RTX PRO 5000’s 48 GB capacity is smaller than the GB10’s 128 GB, but the bus width (384-bit vs 256-bit) favors the workstation card.

Compute rates follow the same pattern. The RTX PRO 5000 achieves 66.94 TFLOPS FP32 and FP16 (1:1), while the GB10 achieves 29.71 TFLOPS in both. Pixel rate is 380.3 GPixel/s for the RTX PRO 5000 versus 116.1 GPixel/s for the GB10. Texture rate is 1,045.9 GTexel/s versus 928.5 GTexel/s, a narrower gap due to the GB10’s relatively high TMU count.

Other differences include TDP (300 W vs 140 W), slot width (dual-slot vs IGP), power connectors (1x 16-pin vs none), and display outputs (4x DisplayPort 2.1b vs 1x HDMI). The RTX PRO 5000 measures 267 mm in length, while the GB10 measures 150 mm. The RTX PRO 5000 supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, whereas the GB10 lists no API support.

Head-to-Head Benchmarks

The head-to-head results are lopsided. In Geekbench OpenCL, the RTX PRO 5000 scores 254,116 against the GB10’s 120,137, a 111.5% delta. This means the RTX PRO 5000 is more than twice as fast in this compute-heavy test. The Geekbench Vulkan test shows an even wider margin: the RTX PRO 5000 scores 282,631 versus 114,648, a 146.5% delta. This nearly 2.5x performance advantage likely stems from the RTX PRO 5000’s dedicated RT and tensor cores, which are absent in the GB10’s API support list.

The data shows that the GB10’s higher boost clock and larger memory capacity do not compensate for its lower shading unit count and memory bandwidth. The RTX PRO 5000’s 14,080 shading units process far more parallel threads, and its 1.34 TB/s bandwidth feeds those units at a rate the GB10 cannot match. The GB10’s 273.2 GB/s bandwidth is a bottleneck for any compute workload that requires frequent memory access.

Looking at the rivals, the RTX PRO 5000’s average score of 182,109 is 2.3% above the GeForce RTX 4090 D (178,050) and 0.9% below the A100 SXM4 80 GB (183,725). The GB10’s average score of 117,393 is 0.3% above the RTX 4000 SFF Ada Generation (117,088) and 1.3% below the AMD Radeon PRO W7700 (118,976). These deltas place the RTX PRO 5000 in the high-end workstation tier, while the GB10 sits in the mid-range server tier.

The Verdict

The NVIDIA RTX PRO 5000 Blackwell is the superior GPU for raw performance. It wins both head-to-head benchmarks by over 111%, and its 98th percentile ranking versus the GB10’s 95th percentile confirms its higher standing. Any workload that requires maximum FP32 throughput, fast memory bandwidth, or real-time ray tracing should use the RTX PRO 5000. Its 48 GB GDDR7 memory is sufficient for most professional visualization and AI training tasks.

The NVIDIA GB10 is the choice for memory capacity and power efficiency. Its 128 GB LPDDR5X memory is over twice the RTX PRO 5000’s capacity, making it suitable for workloads that need to hold large models or datasets in memory. Its 140 W TDP is less than half the RTX PRO 5000’s 300 W, and it requires no external power connectors, making it easier to integrate into dense server configurations. The GB10’s 95th percentile ranking is still high, and its average score of 117,393 places it just above the RTX 4000 SFF Ada Generation.

The data suggests two different users. The RTX PRO 5000 is for professionals who need speed and are willing to accommodate a 267 mm dual-slot card with a 700 W PSU. The GB10 is for server operators who need memory capacity and low power draw, accepting a 150 mm IGP with no display outputs beyond a single HDMI. Neither card is a substitute for the other; they target distinct segments of the market. The RTX PRO 5000 leads in compute, while the GB10 leads in capacity and efficiency.