NVIDIA B200 SXM6 vs NVIDIA GeForce RTX 5090 Comparison

The NVIDIA B200 SXM6 and the NVIDIA GeForce RTX 5090 represent two distinct branches of NVIDIA's Blackwell architecture, one aimed at massive server-side compute and the other at high-performance desktop graphics. The database paints a clear picture of two products optimized for entirely different workloads, with the RTX 5090 holding the only recorded performance metrics while the B200 SXM6 focuses on raw memory capacity and bandwidth.

The Verdict

The recorded data shows the NVIDIA GeForce RTX 5090 is the only product in this comparison with benchmark scores, achieving a 92nd percentile ranking among all GPUs. Its average benchmark score of 79,842 places it in close competition with the NVIDIA Tesla P100 PCIe 16 GB, which scores 79,605 and trails by just 0.3%. The RTX 5090 also leads the Tesla P100 PCIe 12 GB by 0.6% and the AMD Radeon RX 6850M XT by 1.1%, while the AMD Radeon Pro Vega 64X sits slightly ahead at 80,959, a 1.4% advantage.

The NVIDIA B200 SXM6 has no benchmarks recorded in the database, resulting in a 50th percentile ranking and an average score of zero. This absence of data reflects its purpose as a compute accelerator without display outputs, designed for server environments where gaming or graphics benchmarks are irrelevant. The B200 SXM6 delivers 180 GB of HBM3e memory with a bandwidth of 8.19 TB/s, figures that dwarf the RTX 5090's 32 GB of GDDR7 at 1.79 TB/s, but the B200 SXM6 lacks the graphics APIs and display connectivity that define a consumer GPU.

For users seeking immediate graphics performance, the RTX 5090 is the clear choice based on its substantial benchmark presence. The B200 SXM6, however, targets a different audience entirely: its massive memory pool and bandwidth suggest a focus on large-scale data processing, AI training, or scientific compute, areas where benchmark scores from traditional graphics tests would not capture its capabilities.

FAQ

Q: Which GPU has a higher benchmark percentile ranking?

A: The NVIDIA GeForce RTX 5090 ranks in the 92nd percentile among all GPUs, while the NVIDIA B200 SXM6 sits at the 50th percentile with no recorded benchmark scores.

Q: How does the RTX 5090 compare to its closest rival in the database?

A: The RTX 5090's average benchmark score of 79,842 is 0.3% ahead of the NVIDIA Tesla P100 PCIe 16 GB, which scores 79,605, and 0.6% ahead of the Tesla P100 PCIe 12 GB at 79,396.

Q: What is the memory capacity difference between these two cards?

A: The NVIDIA B200 SXM6 features 180 GB of HBM3e memory, while the NVIDIA GeForce RTX 5090 offers 32 GB of GDDR7 memory, a significant difference that highlights their distinct target markets.

Q: Do both GPUs support the same graphics APIs?

A: No, the RTX 5090 supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the B200 SXM6 lists these APIs as not applicable, reflecting its server-oriented design with no display outputs.

Q: What are the power requirements for each GPU?

A: The B200 SXM6 has a TDP of 1000 W with a suggested PSU of 1400 W, whereas the RTX 5090 has a TDP of 575 W and a suggested PSU of 950 W.

Architecture Differences

The two GPUs share the Blackwell architecture family but diverge significantly in their implementation. The B200 SXM6 uses the GB100 chip under the "Blackwell" architecture, while the RTX 5090 employs the GB202 chip under "Blackwell 2.0". Both are fabricated on a 5 nm process at TSMC, but the B200 SXM6 packs 208,000 million transistors into a die size of 1628 mm², resulting in a transistor density of 127.8 million per square millimeter. The RTX 5090, in contrast, contains 92,200 million transistors on a 750 mm² die, achieving a density of 122.9 million per square millimeter.

The B200 SXM6 belongs to the "Server Blackwell (Bxx)" generation, while the RTX 5090 is part of the "GeForce 50" generation within the GeForce 50-series. This distinction extends to their physical designs: the B200 SXM6 is an SXM Module with no display outputs, whereas the RTX 5090 is a dual-slot card measuring 304 mm in length, 137 mm in height, and 40 mm in width, offering 1x HDMI 2.1b and 3x DisplayPort 2.1b outputs.

Ray tracing support highlights another divergence. The RTX 5090 includes 170 RT cores, a standard feature for consumer graphics, while the B200 SXM6 lists no RT cores, suggesting a compute-first design that forgoes real-time ray tracing hardware. The B200 SXM6 also lacks any graphics API support, with DirectX, OpenGL, and Vulkan all marked as not applicable, reinforcing its role as a pure compute accelerator.

Specification Differences

The clock speeds reveal a stark contrast in operating characteristics. The B200 SXM6 has a base clock of 120 MHz and a boost clock of 1830 MHz, while the RTX 5090 operates at a base of 2017 MHz and boosts to 2407 MHz. Memory clocks differ as well: the B200 SXM6 runs at 2000 MHz with 8 Gbps effective speed, while the RTX 5090 uses 1750 MHz with 28 Gbps effective speed.

Memory configuration sets these cards far apart. The B200 SXM6 uses 180 GB of HBM3e across a 8192-bit bus, delivering 8.19 TB/s of bandwidth. The RTX 5090 uses 32 GB of GDDR7 on a 512-bit bus, achieving 1.79 TB/s. Shading unit counts favor the RTX 5090 with 21,760 units versus 18,944, and TMUs also lean toward the RTX 5090 with 680 against 592. ROP counts show a major difference: the RTX 5090 has 176 ROPs, while the B200 SXM6 has only 24.

Fill rates and compute throughput follow these architectural differences. The RTX 5090 achieves a pixel rate of 423.6 GPixel/s and a texture rate of 1,636.8 GTexel/s, while the B200 SXM6 manages 43.92 GPixel/s and 1,083.4 GTexel/s. FP32 performance also favors the RTX 5090 at 104.8 TFLOPS versus 69.34 TFLOPS for the B200 SXM6, with both offering 1:1 FP16 to FP32 ratios. The B200 SXM6 has a TDP of 1000 W requiring a 1400 W PSU, while the RTX 5090's TDP is 575 W with a 950 W PSU recommendation. The B200 SXM6 uses PCIe 6.0 x16, whereas the RTX 5090 uses PCIe 5.0 x16 and a single 16-pin power connector.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark results between the B200 SXM6 and the RTX 5090, so direct comparisons rely on the RTX 5090's recorded scores and the B200 SXM6's absence of data. The RTX 5090's strongest benchmark results include a Geekbench Vulkan score of 376,728 and a Geekbench OpenCL score of 334,370, indicating substantial compute capability in general-purpose workloads. Its 3DMark Steel Nomad DX12 score of 18,355 reflects modern gaming performance, while Passmark scores show a G3D result of 39,650 and a GPU compute score of 26,756.

The B200 SXM6's lack of benchmarks means the data cannot quantify its performance relative to the RTX 5090. Its architecture points to strengths in memory-intensive tasks, with 180 GB capacity and 8.19 TB/s bandwidth exceeding the RTX 5090 by factors of 5.6 and 4.6 respectively. However, without recorded scores, the database cannot confirm how these specifications translate into real-world performance in any workload.

The RTX 5090's benchmark data shows consistency across different test suites, with its Passmark DirectX scores ranging from 185 in DirectX 12 to 395 in DirectX 9, and a Passmark G2D score of 1,413. These figures, combined with its 92nd percentile ranking, indicate a well-rounded graphics solution, though the B200 SXM6's server focus means such graphics-oriented benchmarks would likely not apply to its intended use cases.

Where Each One Wins

The RTX 5090 wins in every recorded benchmark category, reflecting its consumer and professional graphics orientation. Its higher shading unit count, ROP count, and clock speeds translate directly into superior fill rates and FP32 throughput. The 170 RT cores and full graphics API support make it suitable for gaming, rendering, and any workload requiring display output or real-time graphics. Its 92nd percentile ranking and average score of 79,842 place it competitively against other high-end GPUs, including the Tesla P100 variants and the AMD Radeon RX 6850M XT.

The B200 SXM6 wins in memory capacity and bandwidth, offering 180 GB and 8.19 TB/s compared to the RTX 5090's 32 GB and 1.79 TB/s. This advantage suggests a clear edge in workloads that require massive datasets resident in GPU memory, such as large language model training, scientific simulations, or data analytics. Its 1000 W TDP and SXM Module form factor indicate a data center environment where power and space constraints differ from desktop systems. The B200 SXM6 also uses the newer PCIe 6.0 x16 interface, potentially offering higher host connectivity speeds, though the RTX 5090's PCIe 5.0 x16 remains current for consumer platforms.

The production status for both is active, with the B200 SXM6 released on October 31, 2024, and the RTX 5090 on January 29, 2025. The B200 SXM6 lists its predecessor as Server Hopper and successor as Server Rubin, while the RTX 5090 follows GeForce 40 and precedes GeForce 60. These lineage details confirm their divergent product paths within NVIDIA's lineup.