NVIDIA B200 SXM6 vs NVIDIA RTX PRO 4000 Blackwell Comparison

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between the NVIDIA B200 SXM6 and the NVIDIA RTX PRO 4000 Blackwell. The B200 SXM6 has no recorded benchmark scores, while the RTX PRO 4000 Blackwell has nine recorded tests. This absence of overlapping data means a direct comparison of measured performance is not possible from the recorded information. Instead, the available data must be interpreted through the RTX PRO 4000's own benchmark results and its placement among rivals.

The RTX PRO 4000 Blackwell shows a 3DMark Steel Nomad DX12 score of 4,648. Its Geekbench Vulkan result is 194,168. PassMark scores include 28,427 for G3D, 14,805 for GPU Compute, 1,265 for G2D, 354 for DirectX 9, 276 for DirectX 11, 173 for DirectX 10, and 97 for DirectX 12. The average benchmark score for the RTX PRO 4000 is 27,135, placing it in the 72nd percentile among all GPUs in the database.

The nearest rivals for the RTX PRO 4000 Blackwell provide context. The AMD Radeon RX 6700 XT has an average score of 27,425, which is 1.1% higher than the RTX PRO 4000. The NVIDIA GeForce RTX 4070 Mobile also scores 27,435, again 1.1% higher. The NVIDIA GeForce RTX 3090 averages 27,565, 1.6% higher. The NVIDIA RTX A4000 averages 26,683, which is 1.7% lower than the RTX PRO 4000. These deltas indicate the RTX PRO 4000 sits within a narrow performance band around these established cards, slightly behind the RX 6700 XT, RTX 4070 Mobile, and RTX 3090, while slightly ahead of the RTX A4000.

For the B200 SXM6, the database records an average benchmark score of zero and a 50th percentile placement. This does not imply a performance level; it simply reflects the absence of any recorded benchmark entries for this accelerator. The B200 SXM6 is a server-oriented module, and its benchmark profile in the database is empty, so any performance comparison must rely on architectural specifications rather than measured results.

Architecture Differences

The two GPUs share the Blackwell architecture name but diverge in implementation. The B200 SXM6 uses the GB100 chip and is classified under Server Blackwell (Bxx). The RTX PRO 4000 Blackwell uses the GB203 chip and belongs to the Blackwell PRO W (x000) generation. The architecture field for the RTX PRO 4000 is listed as Blackwell 2.0, while the B200 SXM6 is simply Blackwell. This distinction suggests a generational refinement in the workstation part, though both are fabricated on a 5 nm process at TSMC.

The transistor counts differ substantially. The B200 SXM6 integrates 208,000 million transistors on a die size of 1,628 mm², yielding a transistor density of 127.8 million per mm². The RTX PRO 4000 Blackwell contains 45,600 million transistors on a 378 mm² die, with a density of 120.6 million per mm². The B200 SXM6 is therefore a much larger and denser chip, reflecting its data-center orientation.

Memory architecture presents a major divide. The B200 SXM6 uses 180 GB of HBM3e on an 8,192-bit bus, delivering 8.19 TB/s of bandwidth. The RTX PRO 4000 Blackwell uses 24 GB of GDDR7 on a 192-bit bus, providing 672.0 GB/s. The B200 SXM6 has over seven times the memory capacity and more than twelve times the bandwidth. The memory clock for the B200 SXM6 is 2,000 MHz (8 Gbps effective), while the RTX PRO 4000 runs at 1,750 MHz (28 Gbps effective).

Compute resources also differ sharply. The B200 SXM6 has 18,944 shading units, 592 TMUs, 24 ROPs, and 592 tensor cores. The RTX PRO 4000 has 8,960 shading units, 280 TMUs, 96 ROPs, 70 RT cores, and 280 tensor cores. The B200 SXM6 doubles the shading units and TMUs, but the RTX PRO 4000 has four times the ROPs and includes dedicated RT cores, which the B200 SXM6 lacks entirely.

Clock speeds show a different pattern. The B200 SXM6 has a base clock of 120 MHz and a boost clock of 1,830 MHz. The RTX PRO 4000 runs at 1,230 MHz base and 2,055 MHz boost. The RTX PRO 4000 has a much higher base clock, while the boost clock advantage is smaller but still present. The pixel rate for the RTX PRO 4000 is 197.3 GPixel/s, compared to 43.92 GPixel/s for the B200 SXM6. Texture rates are 1,083.4 GTexel/s for the B200 SXM6 versus 575.4 GTexel/s for the RTX PRO 4000. FP32 throughput is 69.34 TFLOPS for the B200 SXM6 and 36.83 TFLOPS for the RTX PRO 4000, with FP16 matching FP32 at a 1:1 ratio for both.

Power and interface specifications reinforce the different roles. The B200 SXM6 has a TDP of 1,000 W, uses an SXM module slot, has no display outputs, and connects via PCIe 6.0 x16. The RTX PRO 4000 has a TDP of 140 W, is single-slot, uses a 1x 16-pin power connector, offers 4x DisplayPort 2.1b outputs, and connects via PCIe 5.0 x16. The suggested PSU for the B200 SXM6 is 1,400 W, while the RTX PRO 4000 suggests 300 W.

API support differs as well. The B200 SXM6 lists DirectX, OpenGL, and Vulkan as N/A. The RTX PRO 4000 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The B200 SXM6 is not designed for graphics API workloads, while the RTX PRO 4000 is a full workstation graphics card.

FAQ

Q: Which GPU has a higher FP32 compute throughput?

A: The NVIDIA B200 SXM6 delivers 69.34 TFLOPS FP32, while the NVIDIA RTX PRO 4000 Blackwell provides 36.83 TFLOPS. The B200 SXM6 is roughly 88% higher in this metric.

Q: How do the memory bandwidth figures compare?

A: The B200 SXM6 has 8.19 TB/s of bandwidth from HBM3e on an 8,192-bit bus. The RTX PRO 4000 Blackwell has 672.0 GB/s from GDDR7 on a 192-bit bus. The B200 SXM6 offers about 12.2 times the bandwidth.

Q: Does the RTX PRO 4000 Blackwell support ray tracing?

A: Yes, the RTX PRO 4000 has 70 RT cores. The B200 SXM6 has no RT cores listed in the database, so ray tracing hardware is not present for that accelerator.

Q: What is the power consumption difference?

A: The B200 SXM6 has a TDP of 1,000 W with a suggested PSU of 1,400 W. The RTX PRO 4000 has a TDP of 140 W with a suggested PSU of 300 W. The B200 SXM6 consumes over seven times the power.

Q: Which GPU can drive displays?

A: Only the RTX PRO 4000 Blackwell has display outputs, specifically 4x DisplayPort 2.1b. The B200 SXM6 has no display outputs and is a compute-only module.

Q: What is the transistor count difference?

A: The B200 SXM6 contains 208,000 million transistors. The RTX PRO 4000 contains 45,600 million transistors. The B200 SXM6 has about 4.6 times as many transistors.

Specification Differences

The two GPUs differ in nearly every recorded specification category. The chip is GB100 versus GB203. The generation differs: Server Blackwell (Bxx) versus Blackwell PRO W (x000). Transistors are 208,000 million versus 45,600 million. Die size is 1,628 mm² versus 378 mm². Transistor density is 127.8M / mm² versus 120.6M / mm².

Clock speeds differ: base is 120 MHz versus 1,230 MHz, boost is 1,830 MHz versus 2,055 MHz, and memory clock is 2,000 MHz (8 Gbps effective) versus 1,750 MHz (28 Gbps effective). Memory size is 180 GB versus 24 GB. Memory type is HBM3e versus GDDR7. Bus width is 8,192 bit versus 192 bit. Bandwidth is 8.19 TB/s versus 672.0 GB/s.

Shading units are 18,944 versus 8,960. TMUs are 592 versus 280. ROPs are 24 versus 96. RT cores are not listed for the B200 SXM6 versus 70 for the RTX PRO 4000. Tensor cores are 592 versus 280. Pixel rate is 43.92 GPixel/s versus 197.3 GPixel/s. Texture rate is 1,083.4 GTexel/s versus 575.4 GTexel/s. FP32 is 69.34 TFLOPS versus 36.83 TFLOPS. FP16 is 69.34 TFLOPS (1:1) versus 36.83 TFLOPS (1:1).

TDP is 1,000 W versus 140 W. Slot width is SXM Module versus Single-slot. Power connectors are not listed for the B200 SXM6 versus 1x 16-pin for the RTX PRO 4000. Suggested PSU is 1,400 W versus 300 W. Bus interface is PCIe 6.0 x16 versus PCIe 5.0 x16. Display outputs are none versus 4x DisplayPort 2.1b.

APIs differ: DirectX, OpenGL, and Vulkan are N/A for the B200 SXM6, while the RTX PRO 4000 lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Dimensions are absent for the B200 SXM6, while the RTX PRO 4000 measures 241 mm by 111 mm by 20 mm. Release dates differ: the B200 SXM6 launched on 2024-10-31, and the RTX PRO 4000 launched on 2025-03-17. The B200 SXM6 has a launch MSRP of 34,999 USD, while the RTX PRO 4000 has no launch MSRP recorded. The predecessor differs: Server Hopper versus Workstation Ada. The successor is Server Rubin for the B200 SXM6, and none for the RTX PRO 4000.

The Verdict

The data indicates two completely different products with no overlapping benchmark results. The B200 SXM6 is a server accelerator with massive memory capacity, extreme bandwidth, and high compute throughput, but it has no display outputs, no graphics API support, and no recorded benchmarks. The RTX PRO 4000 Blackwell is a workstation graphics card with measured performance data, display outputs, full API support, and a 72nd percentile ranking among all GPUs.

The B200 SXM6 leads in raw compute specifications: 69.34 TFLOPS FP32, 8.19 TB/s bandwidth, 180 GB memory, and 208,000 million transistors. The RTX PRO 4000 leads in graphics-oriented specifications: 96 ROPs, 70 RT cores, 4x DisplayPort 2.1b, DirectX 12 Ultimate, and a 2,055 MHz boost clock. The power envelope is equally divergent, with the B200 SXM6 drawing 1,000 W and the RTX PRO 4000 drawing 140 W.

The benchmark data shows the RTX PRO 4000 sits within 1.1% to 1.6% behind three rivals and 1.7% ahead of one rival. This places it in a competitive mid-range workstation tier. The B200 SXM6 has no benchmark rivals listed, so its relative performance cannot be assessed from recorded measurements.

Where Each One Wins

The B200 SXM6 wins in every metric related to memory capacity and bandwidth. Its 180 GB of HBM3e versus 24 GB of GDDR7 gives it a decisive advantage for workloads that require large datasets resident on the GPU. The 8.19 TB/s bandwidth versus 672.0 GB/s supports data movement at a scale the RTX PRO 4000 cannot approach. Its FP32 throughput of 69.34 TFLOPS versus 36.83 TFLOPS indicates higher compute density for parallel workloads. The PCIe 6.0 x16 interface versus PCIe 5.0 x16 provides a newer host connection.

The RTX PRO 4000 wins in graphics and display functionality. It has 96 ROPs versus 24, a pixel rate of 197.3 GPixel/s versus 43.92 GPixel/s, and 70 RT cores where the B200 has none. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the B200 lists N/A for all three. The 4x DisplayPort 2.1b outputs enable direct display connectivity. Its 2,055 MHz boost clock exceeds the B200's 1,830 MHz. The RTX PRO 4000 also has a much lower power draw at 140 W versus 1,000 W, and a smaller form factor at single-slot versus SXM module.

The RTX PRO 4000 has recorded benchmark scores, while the B200 SXM6 has none. The RTX PRO 4000's 28,427 PassMark G3D score and 14,805 compute score provide measurable performance data. The B200 SXM6's average benchmark score is zero, meaning no such data exists. The RTX PRO 4000's 72nd percentile placement versus the B200's 50th percentile reflects the availability of data, not necessarily performance.

For compute-heavy, memory-bound server workloads, the B200 SXM6 is the only choice based on its specifications. For workstation graphics, rendering, or any task requiring display output, the RTX PRO 4000 is the only option with the necessary features. The database does not provide evidence for any use case where both GPUs could be considered interchangeable.