NVIDIA B200 SXM6 vs NVIDIA GeForce RTX 5080 Mobile Comparison

Head-to-Head Benchmarks

The recorded data shows no direct head-to-head benchmark comparisons between the NVIDIA B200 SXM6 and the NVIDIA GeForce RTX 5080 Mobile. The B200 SXM6 has no benchmark entries in the database, while the RTX 5080 Mobile has ten recorded tests. This absence of overlapping measurements means a direct score-to-score comparison is not possible from the database. However, the RTX 5080 Mobile's performance envelope can be characterized through its own benchmark results, and the B200 SXM6's position is defined by its architectural specifications rather than measured scores.

The RTX 5080 Mobile delivers an average benchmark score of 38,349 across its recorded tests. Its percentile ranking against all GPUs is 81, indicating that it sits above the majority of recorded graphics cards in the database. In the 3DMark Steel Nomad DX12 test, it scores 4,952. In Geekbench OpenCL, it records 166,986, and in Geekbench Vulkan, it achieves 169,754. The Passmark suite shows a G3D score of 27,711 and a GPU compute score of 12,134. The DirectX 9, 10, 11, and 12 Passmark tests yield scores of 314, 171, 253, and 116, respectively, while the G2D test records 1,095.

The nearest rivals for the RTX 5080 Mobile in the database include the NVIDIA GeForce MX570 with an average score of 38,299 and a delta of 0.1%, the NVIDIA GeForce RTX 4080 Mobile with 38,135 and a delta of 0.6%, the NVIDIA GeForce MX570 A with 38,691 and a delta of -0.9%, and the AMD Radeon Pro 580X with 38,706 and a delta of -0.9%. These deltas are extremely small, none exceeding 1% in absolute terms. The data indicates that the RTX 5080 Mobile's performance is statistically indistinguishable from these four rivals in aggregate scoring, with the RTX 4080 Mobile trailing by only 0.6% and the MX570 A leading by 0.9%.

The B200 SXM6 holds a percentile rank of 50 against all GPUs, but this rank is based on zero recorded benchmarks and an average score of zero, so it reflects a default position rather than a measured outcome. The B200 SXM6's raw compute figures from the specification data are substantially higher than the RTX 5080 Mobile's, but without benchmark scores, the database cannot confirm how those specifications translate into real-world test results.

Architecture Differences

The two processors diverge fundamentally in their design targets. The B200 SXM6 uses the GB100 chip with the Blackwell architecture, classified under the Server Blackwell (Bxx) generation. The RTX 5080 Mobile uses the GB203 chip with the Blackwell 2.0 architecture, classified under the GeForce 50 Mobile generation. Both are fabricated by TSMC on a 5 nm process, but the transistor counts differ dramatically. The B200 SXM6 integrates 208,000 million transistors on a die size of 1628 mm², yielding a transistor density of 127.8M per mm². The RTX 5080 Mobile integrates 45,600 million transistors on a die size of 378 mm², yielding a density of 120.6M per mm². The B200 SXM6's die is more than four times larger in area and contains roughly 4.6 times the transistor count.

Memory architecture is a primary differentiator. The B200 SXM6 uses 180 GB of HBM3e memory with an 8192-bit bus width and a bandwidth of 8.19 TB/s. The RTX 5080 Mobile uses 16 GB of GDDR7 memory with a 256-bit bus width and a bandwidth of 896.0 GB/s. The B200 SXM6's memory bandwidth is more than nine times higher, and its capacity is more than eleven times larger. Clock speeds also differ: the B200 SXM6 has a base clock of 120 MHz and a boost clock of 1830 MHz, while the RTX 5080 Mobile has a base of 975 MHz and a boost of 1500 MHz. The memory clocks are recorded as 2000 MHz (8 Gbps effective) for the B200 SXM6 and 1750 MHz (28 Gbps effective) for the RTX 5080 Mobile.

Compute resources show a similar gap. The B200 SXM6 has 18,944 shading units, 592 TMUs, and 24 ROPs, with 592 tensor cores and no RT cores listed. The RTX 5080 Mobile has 7,680 shading units, 240 TMUs, and 96 ROPs, with 240 tensor cores and 60 RT cores. The B200 SXM6's shading unit count is roughly 2.5 times higher, and its TMU count is also 2.5 times higher. The RTX 5080 Mobile has four times the ROP count, which contributes to its higher pixel rate of 144.0 GPixel/s compared to the B200 SXM6's 43.92 GPixel/s. The texture rates are 1,083.4 GTexel/s for the B200 SXM6 and 360.0 GTexel/s for the RTX 5080 Mobile. FP32 and FP16 compute are both listed at 69.34 TFLOPS for the B200 SXM6 (1:1 ratio), while the RTX 5080 Mobile lists 23.04 TFLOPS for both (also 1:1).

The B200 SXM6 is a server module with a slot width of SXM Module, a power draw of 1000 W, and a suggested PSU of 1400 W. It has no display outputs. The RTX 5080 Mobile is an integrated graphics processor (IGP) with a power draw of 80 W, no power connectors, and portable-device-dependent display outputs. The B200 SXM6 uses PCIe 6.0 x16, while the RTX 5080 Mobile uses PCIe 5.0 x16. API support also differs: the B200 SXM6 lists N/A for DirectX, OpenGL, and Vulkan, while the RTX 5080 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

The Verdict

The data indicates a clear partition of intended use cases. The B200 SXM6 is a server-oriented accelerator with no display outputs, no consumer API support, and a 1000 W power envelope. Its compute resources, memory capacity, and bandwidth are an order of magnitude higher than the RTX 5080 Mobile's, but it cannot render graphics to a screen or run standard graphics APIs. The RTX 5080 Mobile is a mobile graphics processor with full DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support, 60 RT cores, and a power draw of 80 W, making it suitable for portable devices.

For users requiring massive parallel compute capacity, 180 GB of HBM3e memory, and 8.19 TB/s of bandwidth, the B200 SXM6 is the only option between the two. Its 69.34 TFLOPS of FP32 and FP16 compute, along with 592 tensor cores, position it for high-throughput workloads. For mobile graphics tasks, including ray tracing via 60 RT cores and display output, the RTX 5080 Mobile is the functional choice. Its benchmark scores place it at the 81st percentile among all GPUs, with an average score of 38,349, and its nearest rivals are within 1% in aggregate scoring.

The B200 SXM6's percentile rank of 50 is based on no recorded benchmarks, so it carries no performance validation from the database. The RTX 5080 Mobile has ten recorded tests, providing a measured performance profile. Users selecting between these two should rely on the workload type: server-side compute acceleration for the B200 SXM6, mobile client graphics for the RTX 5080 Mobile. The B200 SXM6 has a launch MSRP of 34,999 USD.

Specification Differences

The two processors differ in every major specification category. The B200 SXM6 uses the GB100 chip, while the RTX 5080 Mobile uses the GB203 chip. The B200 SXM6 is in the Server Blackwell (Bxx) generation, while the RTX 5080 Mobile is in the GeForce 50 Mobile generation. Transistor counts are 208,000 million versus 45,600 million, and die sizes are 1628 mm² versus 378 mm². Transistor densities are 127.8M per mm² versus 120.6M per mm².

Base clocks are 120 MHz versus 975 MHz, and boost clocks are 1830 MHz versus 1500 MHz. Memory sizes are 180 GB versus 16 GB, types are HBM3e versus GDDR7, bus widths are 8192 bit versus 256 bit, and bandwidths are 8.19 TB/s versus 896.0 GB/s. Shading units are 18,944 versus 7,680, TMUs are 592 versus 240, and ROPs are 24 versus 96. Tensor cores are 592 versus 240. The B200 SXM6 has no RT cores listed, while the RTX 5080 Mobile has 60. Pixel rates are 43.92 GPixel/s versus 144.0 GPixel/s, and texture rates are 1,083.4 GTexel/s versus 360.0 GTexel/s. FP32 and FP16 are both 69.34 TFLOPS versus 23.04 TFLOPS.

TDP is 1000 W versus 80 W. Slot widths are SXM Module versus IGP. Power connectors are null versus none. The suggested PSU is 1400 W for the B200 SXM6 and null for the RTX 5080 Mobile. Bus interfaces are PCIe 6.0 x16 versus PCIe 5.0 x16. Display outputs are no outputs versus portable device dependent. API support is N/A for all three on the B200 SXM6, while the RTX 5080 Mobile lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Release dates are 2024-10-31 for the B200 SXM6 and 2025-04-01 for the RTX 5080 Mobile. The B200 SXM6's predecessor is Server Hopper and successor is Server Rubin, while the RTX 5080 Mobile's predecessor is GeForce 40 Mobile and its successor is not listed.

FAQ

Q: What is the memory capacity difference between the two GPUs?

A: The B200 SXM6 has 180 GB of HBM3e memory, while the RTX 5080 Mobile has 16 GB of GDDR7 memory. The B200 SXM6's memory bus is 8192 bit wide, versus 256 bit for the RTX 5080 Mobile.

Q: Which GPU has higher FP32 compute?

A: The B200 SXM6 lists 69.34 TFLOPS of FP32 compute, while the RTX 5080 Mobile lists 23.04 TFLOPS. The B200 SXM6's FP16 is also 69.34 TFLOPS, matching its FP32 at a 1:1 ratio.

Q: Does the RTX 5080 Mobile support ray tracing?

A: Yes. The RTX 5080 Mobile has 60 RT cores. The B200 SXM6 has no RT cores listed in the database.

Q: What API support does the B200 SXM6 provide?

A: The B200 SXM6 lists N/A for DirectX, OpenGL, and Vulkan. The RTX 5080 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: How do the benchmark scores compare between the two GPUs?

A: The RTX 5080 Mobile has ten recorded benchmarks with an average score of 38,349 and a percentile rank of 81. The B200 SXM6 has no benchmark entries, an average score of zero, and a percentile rank of 50.

Q: What are the power requirements for each GPU?

A: The B200 SXM6 has a TDP of 1000 W and a suggested PSU of 1400 W. The RTX 5080 Mobile has a TDP of 80 W and no suggested PSU listed.