NVIDIA B200 SXM6 vs NVIDIA RTX 4000 Mobile Ada Generation Comparison

Head-to-Head Benchmarks

The recorded database contains no direct benchmark scores for either the NVIDIA B200 SXM6 or the NVIDIA RTX 4000 Mobile Ada Generation. Both entries hold an average benchmark score of 0, with zero recorded wins for either part. The percentile fields place both at the 50th percentile against all GPUs, which is a neutral position reflecting the absence of measured data rather than a comparative performance tier.

Without measured scores, the head-to-head comparison relies entirely on the hardware specifications provided. The B200 SXM6 delivers 69.34 TFLOPS of FP32 compute, while the RTX 4000 Mobile reaches 24.72 TFLOPS. That places the B200 at roughly 2.8 times the raw FP32 throughput of the mobile part, a direct arithmetic ratio from the listed figures. In FP16, both parts run at a 1:1 ratio with their FP32 numbers, meaning the B200 again leads by the same margin: 69.34 TFLOPS versus 24.72 TFLOPS.

Pixel throughput tells the opposite story. The RTX 4000 Mobile produces 133.2 GPixel/s against the B200's 43.92 GPixel/s. That is a 3x advantage for the mobile GPU in fill-rate terms, driven by its 80 ROPs compared to just 24 on the B200. Texture rate favors the server part, however: the B200 reaches 1,083.4 GTexel/s versus 386.3 GTexel/s for the RTX 4000, a 2.8x lead.

Memory bandwidth is the largest gap in the comparison. The B200 SXM6 uses 180 GB of HBM3e across an 8192-bit bus to achieve 8.19 TB/s, while the RTX 4000 Mobile uses 12 GB of GDDR6 on a 192-bit bus for 432.0 GB/s. The B200's bandwidth is roughly 19 times higher, a figure derived directly from the two specifications.

Architecture Differences

The two GPUs come from different architecture generations. The B200 SXM6 is built on Blackwell, specifically the GB100 chip, and belongs to the Server Blackwell (Bxx) generation. The RTX 4000 Mobile uses Ada Lovelace with the AD104 chip, placed in the Ada-MW generation. Both use a 5 nm process at TSMC, so the manufacturing node is identical. Transistor counts differ sharply: the GB100 packs 208,000 million transistors on a 1628 mm² die, for a density of 127.8M per mm². The AD104 has 35,800 million transistors on 294 mm², a density of 121.8M per mm². The B200's die is more than five times larger and carries nearly six times the transistor count.

Core configurations follow the compute divide. The B200 contains 18,944 shading units, 592 TMUs, and 24 ROPs. The RTX 4000 Mobile has 7,424 shading units, 232 TMUs, and 80 ROPs. Tensor core counts are 592 on the B200 versus 232 on the mobile part. RT core counts are listed only for the RTX 4000 Mobile at 58; the B200 entry has no RT core figure.

Clock behavior is unusual on the B200. Its base clock is 120 MHz with a boost of 1830 MHz. The RTX 4000 Mobile has a base of 1290 MHz and a boost of 1665 MHz. The mobile part starts nearly 10x higher at base, but the B200 boosts above it by roughly 10 percent. Memory clocks also differ: the B200 runs at 2000 MHz with 8 Gbps effective, while the RTX 4000 Mobile runs at 2250 MHz with 18 Gbps effective.

Interface and power envelopes separate the two completely. The B200 uses PCIe 6.0 x16, draws a 1000 W TDP, and requires a 1400 W suggested PSU. It mounts as an SXM Module with no display outputs. The RTX 4000 Mobile uses PCIe 4.0 x16, has a 110 W TDP, no power connectors, and lists as an IGP with display outputs described as portable device dependent. API support is available on the mobile part: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The B200 lists N/A for all three APIs.

Release dates place the RTX 4000 Mobile first, launching on 2023-03-20, while the B200 arrived on 2024-10-31. The mobile part's predecessor is Ampere-MW and its successor is Blackwell-MW. The B200's predecessor is Server Hopper and its successor is Server Rubin.

Where Each One Wins

The B200 SXM6 wins decisively in raw compute throughput. Its 69.34 TFLOPS FP32 figure is 2.8x the mobile part's 24.72 TFLOPS, and the same ratio applies to FP16. Texture rate also favors the B200 at 1,083.4 GTexel/s, a 2.8x advantage over 386.3 GTexel/s. Memory capacity and bandwidth are overwhelmingly in the B200's favor: 180 GB versus 12 GB, and 8.19 TB/s versus 432.0 GB/s. The server part also carries a larger transistor budget at 208,000 million versus 35,800 million, and a wider memory bus at 8192 bit versus 192 bit.

The RTX 4000 Mobile Ada Generation wins in pixel fill rate. Its 133.2 GPixel/s is just over three times the B200's 43.92 GPixel/s. The mobile GPU also has more ROPs at 80 versus 24, and it has dedicated RT cores at 58 while the B200 lists none. The mobile part boosts higher at base clock, starting at 1290 MHz versus the B200's 120 MHz, though the B200 reaches a higher boost at 1830 MHz versus 1665 MHz. The mobile GPU supports modern graphics APIs directly, with DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, whereas the B200 shows no API support. The mobile part also has a much lower power envelope at 110 W versus 1000 W, and it uses PCIe 4.0 x16 rather than PCIe 6.0 x16.

Shading unit count favors the B200 at 18,944 versus 7,424, and TMU count favors it at 592 versus 232. The B200's die size of 1628 mm² dwarfs the 294 mm² mobile die. The RTX 4000 Mobile has a higher memory clock at 2250 MHz versus 2000 MHz, and a higher effective memory speed at 18 Gbps versus 8 Gbps.

The Verdict

The data shows two GPUs built for entirely different workloads. The NVIDIA B200 SXM6 is a server accelerator aimed at compute-heavy tasks where massive FP32 and FP16 throughput, enormous memory capacity, and extreme bandwidth matter. Its 69.34 TFLOPS FP32, 180 GB HBM3e, and 8.19 TB/s bandwidth place it in a class that the mobile part cannot approach. The 1000 W TDP and SXM Module form factor confirm its data-center positioning.

The NVIDIA RTX 4000 Mobile Ada Generation is a portable GPU with a 110 W TDP and IGP form factor. Its 133.2 GPixel/s pixel rate and 80 ROPs indicate a design tuned for rasterization-heavy graphics workloads rather than dense compute. The presence of 58 RT cores and full API support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 makes it suitable for graphics rendering in mobile systems.

A buyer choosing between these parts should base the decision on workload type. The B200 SXM6 is the clear choice for neural network training, scientific simulation, or any task that can consume 180 GB of memory and utilize 8.19 TB/s of bandwidth. The RTX 4000 Mobile is the only viable option for portable systems needing pixel throughput and graphics API compatibility. The B200 has no display outputs and no API support, so it cannot serve as a graphics card for interactive use. The RTX 4000 Mobile, by contrast, has no path to the B200's memory capacity or compute scale. The two parts do not compete; they address separate markets with separate requirements.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The NVIDIA B200 SXM6 delivers 69.34 TFLOPS FP32, compared to 24.72 TFLOPS for the RTX 4000 Mobile Ada Generation, a 2.8x advantage for the server part.

Q: How do the memory configurations compare?

A: The B200 SXM6 uses 180 GB of HBM3e on an 8192-bit bus with 8.19 TB/s bandwidth. The RTX 4000 Mobile uses 12 GB of GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth.

Q: Which GPU has better pixel fill rate?

A: The RTX 4000 Mobile Ada Generation has a pixel rate of 133.2 GPixel/s, while the B200 SXM6 achieves 43.92 GPixel/s. The mobile part is roughly three times faster in this metric.

Q: What are the power requirements for each GPU?

A: The B200 SXM6 has a 1000 W TDP and a suggested PSU of 1400 W. The RTX 4000 Mobile has a 110 W TDP and no power connectors listed.

Q: Which GPU supports graphics APIs like DirectX and Vulkan?

A: The RTX 4000 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The B200 SXM6 lists N/A for all three APIs.

Q: What are the release dates for these GPUs?

A: The RTX 4000 Mobile Ada Generation was released on 2023-03-20. The B200 SXM6 was released on 2024-10-31.