NVIDIA B200 SXM6 vs NVIDIA L20 Comparison

Head-to-Head Benchmarks

The recorded data shows no direct head-to-head benchmark results between the NVIDIA B200 SXM6 and the NVIDIA L20 in this database. The B200 SXM6 has an average benchmark score of 0 with a percentile ranking of 50 against all GPUs, while the L20 holds a substantial average benchmark score of 251,147 and sits in the 99th percentile. This disparity is stark: the L20 outperforms the B200 SXM6 by a margin that places it among the top 1% of all GPUs, whereas the B200 SXM6's percentile ranking suggests it falls at the median of the database's recorded scores, though its average score of 0 indicates no benchmark data has been captured for it.

For the L20, two specific benchmark results are available: Geekbench OpenCL scores 274,276, and Geekbench Vulkan scores 228,018. These numbers indicate a strong compute capability in both OpenCL and Vulkan workloads, with the OpenCL result exceeding the Vulkan result by roughly 20%. The L20's nearest rivals further contextualize its standing: it leads the NVIDIA PG506-232 by 11.6%, the AMD Radeon PRO W7900D by 14.2%, trails the NVIDIA L40 by 11.6%, and sits 12.6% behind the NVIDIA RTX 6000 Ada Generation. The L20's average score of 251,147 places it firmly between the PG506-232's 225,124 and the L40's 284,111, making it a mid-to-upper tier performer within its immediate competitive set.

The B200 SXM6, despite its lack of benchmark scores, carries specifications that suggest raw compute potential, but without recorded measurements, the database cannot confirm its actual performance. The L20, conversely, delivers verified results across two major graphics APIs, and its nearest rival deltas demonstrate a consistent pattern: it is competitive with but not dominant over the fastest Ada Lovelace server cards, while clearly outpacing older Ampere-based options like the PG506-232.

The Verdict

From the data alone, the NVIDIA L20 is the only one of these two cards with measurable benchmark performance. Its 99th percentile ranking and average score of 251,147 give it a clear, evidence-backed position: it is a high-performing server GPU that beats the PG506-232 by 11.6% and the Radeon PRO W7900D by 14.2%, though it falls short of the L40 and RTX 6000 Ada Generation by 11.6% and 12.6%, respectively. The B200 SXM6, with no recorded benchmarks and a 50th percentile ranking, cannot be recommended on the basis of measured performance; its database entry is incomplete for comparative purposes.

For users whose workloads rely on OpenCL or Vulkan, the L20's scores of 274,276 and 228,018 provide concrete evidence of capability. The B200 SXM6 offers no such validation. The L20 also delivers a lower power draw at 275 W versus the B200's 1000 W, and its dual-slot form factor with a 16-pin power connector and a suggested PSU of 600 W makes it a more accommodating installation for standard server chassis. The B200 SXM6, as an SXM module with a 1400 W suggested PSU, requires specialized infrastructure.

The verdict from the recorded data is straightforward: the L20 is the verified performer, while the B200 SXM6 remains an unmeasured entity in this database. Any selection should favor the L20 based on available evidence, unless the specific architectural traits of the B200 SXM6 are independently validated elsewhere.

Architecture Differences

The two GPUs belong to different NVIDIA server generations. The B200 SXM6 uses the GB100 chip built on the Blackwell architecture, part of the Server Blackwell (Bxx) generation, while the L20 uses the AD102 chip on the Ada Lovelace architecture, part of the Server Ada (Lxx) generation. Both are manufactured by TSMC on a 5 nm process, but the transistor counts diverge sharply: the B200 SXM6 packs 208,000 million transistors on a 1628 mm² die, yielding a density of 127.8M per mm², whereas the L20 uses 76,300 million transistors on a 609 mm² die, with a density of 125.3M per mm². The B200 SXM6's die is more than 2.6 times larger and holds nearly 2.7 times more transistors.

Memory architectures are entirely different. The B200 SXM6 uses 180 GB of HBM3e on an 8192-bit bus, delivering 8.19 TB/s of bandwidth. The L20 uses 48 GB of GDDR6 on a 384-bit bus, providing 864.0 GB/s. The B200 SXM6's bandwidth advantage is roughly 9.5 times the L20's, a direct consequence of its wider bus and HBM3e technology. Clock speeds also differ: the B200 SXM6 runs at a base of 120 MHz and boosts to 1830 MHz, while the L20 has a much higher base of 1440 MHz and boosts to 2520 MHz. The L20's boost clock is 37.7% higher, though the B200 SXM6 compensates with far more shading units (18,944 versus 11,776) and texture mapping units (592 versus 368).

The B200 SXM6 includes 592 tensor cores, while the L20 also has 368 tensor cores but adds 92 dedicated ray tracing cores, a feature the B200 SXM6 does not list. Render output units differ significantly: the B200 SXM6 has only 24 ROPs, while the L20 has 128. Pixel rates reflect this: the L20 achieves 322.6 GPixel/s versus the B200 SXM6's 43.92 GPixel/s. Texture rates are closer, with the B200 SXM6 at 1,083.4 GTexel/s and the L20 at 927.4 GTexel/s. Floating point performance shows the B200 SXM6 ahead in FP32 at 69.34 TFLOPS versus the L20's 59.35 TFLOPS, a 16.8% lead, with both offering FP16 at a 1:1 ratio.

FAQ

Q: Which GPU has higher FP32 performance?

A: The NVIDIA B200 SXM6 records 69.34 TFLOPS in FP32, which is 16.8% higher than the NVIDIA L20's 59.35 TFLOPS.

Q: What memory configurations do the two cards use?

A: The B200 SXM6 uses 180 GB of HBM3e on an 8192-bit bus with 8.19 TB/s bandwidth. The L20 uses 48 GB of GDDR6 on a 384-bit bus with 864.0 GB/s bandwidth.

Q: How do their power requirements compare?

A: The B200 SXM6 has a TDP of 1000 W and a suggested PSU of 1400 W. The L20 has a TDP of 275 W and a suggested PSU of 600 W.

Q: Does the L20 support ray tracing?

A: Yes, the L20 includes 92 ray tracing cores. The B200 SXM6 does not list any ray tracing cores in its specifications.

Q: What are the L20's benchmark scores?

A: The L20 scores 274,276 in Geekbench OpenCL and 228,018 in Geekbench Vulkan, with an average benchmark score of 251,147.

Q: Which card has a higher boost clock?

A: The L20 boosts to 2520 MHz, which is 37.7% higher than the B200 SXM6's boost clock of 1830 MHz.

Where Each One Wins

The B200 SXM6 wins on raw compute density and memory capacity. Its 69.34 TFLOPS FP32 output exceeds the L20's 59.35 TFLOPS, and its 180 GB of HBM3e with 8.19 TB/s bandwidth dwarfs the L20's 48 GB and 864.0 GB/s. For workloads that demand enormous memory footprints or bandwidth-bound operations, such as large model inference or high-resolution data processing, the B200 SXM6's specifications are superior. Its 592 tensor cores also outnumber the L20's 368, suggesting a theoretical advantage in tensor-heavy tasks. The B200 SXM6's 208,000 million transistors and 1628 mm² die indicate a much larger compute substrate.

The L20 wins on verified performance, efficiency, and practical deployment. Its average benchmark score of 251,147 places it in the 99th percentile of all GPUs, while the B200 SXM6 has no recorded score and sits at the 50th percentile. The L20's Geekbench scores of 274,276 (OpenCL) and 228,018 (Vulkan) are concrete data points. Its 275 W TDP is 72.5% lower than the B200 SXM6's 1000 W, and its 600 W suggested PSU versus 1400 W makes it far less demanding on system power delivery. The L20's dual-slot form factor, 267 mm length, and 4x DisplayPort 1.4a outputs contrast with the B200 SXM6's SXM module with no display outputs, making the L20 more flexible for standard server configurations and even visual output tasks. The L20's 322.6 GPixel/s pixel rate is 7.3 times the B200 SXM6's 43.92 GPixel/s, and its 128 ROPs versus 24 give it a clear edge in rasterization-heavy workloads.

The L20 also wins on clock speeds, with a 1440 MHz base and 2520 MHz boost versus the B200 SXM6's 120 MHz base and 1830 MHz boost. These higher clocks contribute to its strong benchmark performance. The L20's API support, including DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, provides broad software compatibility, whereas the B200 SXM6 lists N/A for all three. For most practical server GPU tasks, the L20's measured results and lower power envelope make it the more defensible choice.

Specification Differences

The two cards differ across nearly every recorded specification. The B200 SXM6 uses the GB100 chip on Blackwell architecture, while the L20 uses AD102 on Ada Lovelace. The B200 SXM6 has 208,000 million transistors on a 1628 mm² die, versus 76,300 million on 609 mm² for the L20. Transistor density is similar at 127.8M per mm² for the B200 SXM6 and 125.3M per mm² for the L20. Base clocks are 120 MHz for the B200 SXM6 and 1440 MHz for the L20; boost clocks are 1830 MHz and 2520 MHz, respectively. Memory speed is 2000 MHz (8 Gbps effective) for the B200 SXM6 and 2250 MHz (18 Gbps effective) for the L20.

Memory size, type, bus width, and bandwidth all differ: 180 GB HBM3e on an 8192-bit bus with 8.19 TB/s for the B200 SXM6, and 48 GB GDDR6 on a 384-bit bus with 864.0 GB/s for the L20. Shading units number 18,944 on the B200 SXM6 versus 11,776 on the L20. TMUs are 592 versus 368. ROPs are 24 versus 128. The B200 SXM6 lists no ray tracing cores, while the L20 has 92. Tensor cores are 592 for the B200 SXM6 and 368 for the L20. Pixel rates are 43.92 GPixel/s versus 322.6 GPixel/s. Texture rates are 1,083.4 GTexel/s versus 927.4 GTexel/s. FP32 is 69.34 TFLOPS versus 59.35 TFLOPS, both with FP16 at 1:1.

TDP is 1000 W for the B200 SXM6 and 275 W for the L20. Slot width is SXM Module for the B200 SXM6 and dual-slot for the L20. The B200 SXM6 has no power connector listed, while the L20 uses a 1x 16-pin connector. Suggested PSU is 1400 W versus 600 W. Bus interface is PCIe 6.0 x16 for the B200 SXM6 and PCIe 4.0 x16 for the L20. Display outputs are none for the B200 SXM6 and 4x DisplayPort 1.4a for the L20. API support: the B200 SXM6 lists N/A for DirectX, OpenGL, and Vulkan, while the L20 lists 12 Ultimate (12_2), 4.6, and 1.4. The L20 has dimensions of 267 mm length and 111 mm height; the B200 SXM6 has no dimensions recorded. Release dates differ: the B200 SXM6 launched on 2024-10-31, and the L20 on 2023-11-15. The B200 SXM6 lists a launch MSRP of 34,999 USD; the L20 has no launch MSRP recorded.