AMD Radeon 840M vs NVIDIA B200 SXM6 Comparison

Head-to-Head Benchmarks

The database contains no recorded benchmark scores for either the AMD Radeon 840M or the NVIDIA B200 SXM6. Both entries register zero benchmark submissions and an average benchmark score of zero. Consequently, no direct head-to-head performance comparisons can be derived from the recorded data. The wins counter shows zero for both parts, meaning neither GPU has a documented victory in any benchmark category.

The absence of measurements limits quantitative comparison. The Radeon 840M holds a 50th percentile ranking among all GPUs in the database, as does the B200 SXM6. These percentile positions reflect the database’s neutral stance: both parts sit at the median without any supporting performance data. Without scores, any statement about relative speed, efficiency, or capability must rely solely on architectural specifications rather than measured outcomes.

Architecture Differences

The two GPUs occupy opposite ends of the computing spectrum. The AMD Radeon 840M uses the Krackan Point chip with RDNA 3.5 architecture, belonging to the Navi III IGP generation for Strix Point Mobile. It is built on a 4 nm TSMC process. The NVIDIA B200 SXM6 uses the GB100 chip with Blackwell architecture, part of the Server Blackwell generation. It is fabricated on a 5 nm TSMC process. The process node difference favors AMD in terms of manufacturing technology, though the B200’s massive die size of 1628 mm² dwarfs the Radeon’s unspecified dimensions. The B200 integrates 208,000 million transistors with a density of 127.8 million per square millimeter, while the Radeon’s transistor count and die size are recorded as unknown.

Memory architecture separates the two fundamentally. The Radeon 840M uses system shared memory, with its bus width, type, and bandwidth all dependent on the host system. The B200 SXM6 carries 180 GB of HBM3e memory on an 8192-bit bus, delivering 8.19 TB/s of bandwidth. This represents a dedicated, high-bandwidth memory subsystem designed for data center workloads. The Radeon’s memory bandwidth is listed as system dependent, meaning it varies with the laptop or portable device configuration.

Compute resources differ by orders of magnitude. The Radeon 840M contains 256 shading units, 16 texture mapping units, and 8 raster output units. It includes 4 ray tracing cores. The B200 SXM6 packs 18,944 shading units, 592 TMUs, and 24 ROPs. It includes 592 tensor cores, while the Radeon has no tensor core listing. The B200’s pixel rate reaches 43.92 GPixel/s versus the Radeon’s 23.20 GPixel/s. Texture rate measures 1,083.4 GTexel/s for the B200 against 46.40 GTexel/s for the Radeon.

Floating point throughput shows a similar gap. The Radeon 840M delivers 1,484.8 GFLOPS for both FP32 and FP16, with a 1:1 ratio. The B200 SXM6 achieves 69.34 TFLOPS for both FP32 and FP16, also at a 1:1 ratio. Converting the Radeon’s figure yields 1.4848 TFLOPS, meaning the B200 provides roughly 46 times the FP32 compute. This ratio holds for FP16 as well.

Clock behavior differs notably. The Radeon 840M has a 400 MHz base clock and a 2900 MHz boost clock. The B200 SXM6 has a 120 MHz base clock and an 1830 MHz boost clock. Despite the lower clock speeds, the B200’s massive shader count produces far higher aggregate throughput. The Radeon’s boost clock exceeds the B200’s by over 1 GHz, but this advantage disappears once multiplied by the respective core counts.

Power and cooling profiles are diametrically opposed. The Radeon 840M is rated at 15 W TDP and fits as an integrated graphics processor (IGP) with no power connectors. The B200 SXM6 carries a 1000 W TDP and requires a suggested power supply of 1400 W. It mounts as an SXM module. The Radeon uses a PCIe 4.0 x8 interface, while the B200 uses PCIe 6.0 x16. The Radeon’s display outputs are portable device dependent, whereas the B200 has no display outputs at all, reflecting its server-oriented role.

API support also diverges. The Radeon 840M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The B200 SXM6 lists N/A for DirectX, OpenGL, and Vulkan, indicating it is not designed for traditional graphics workloads. The B200 instead relies on its 592 tensor cores for compute acceleration, a feature absent from the Radeon’s specification sheet.

The Verdict

The recorded data indicates these products serve entirely different purposes. The AMD Radeon 840M is a mobile integrated GPU with modest compute resources, low power draw, and full graphics API support. The NVIDIA B200 SXM6 is a data center accelerator with enormous memory, extreme compute density, and no graphics output. Neither part can substitute for the other.

For portable systems requiring graphics output, the Radeon 840M is the only viable option. Its 15 W TDP, integrated form factor, and DirectX 12 Ultimate support make it suitable for thin-and-light laptops. Its 4 nm process and 2900 MHz boost clock indicate an efficient design for its class, though its 256 shading units limit raw performance.

For server or AI workloads, the B200 SXM6 dominates. Its 180 GB HBM3e memory, 8.19 TB/s bandwidth, and 69.34 TFLOPS FP16 compute position it for large-scale training and inference tasks. The 592 tensor cores provide dedicated acceleration for matrix operations. Its 1000 W TDP and 1400 W suggested power supply confirm it belongs in rack-mounted systems with adequate cooling.

The database records no benchmark results for either part, so the verdict rests on specifications. The Radeon 840M wins on power efficiency and portability. The B200 SXM6 wins on every compute metric, memory capacity, and bandwidth. The choice depends entirely on the target platform, not on performance parity.

FAQ

Q: Which GPU has a higher boost clock?

A: The AMD Radeon 840M has a boost clock of 2900 MHz, while the NVIDIA B200 SXM6 boosts to 1830 MHz.

Q: How much memory does each GPU use?

A: The Radeon 840M uses system shared memory, with capacity dependent on the host device. The B200 SXM6 has 180 GB of dedicated HBM3e memory.

Q: What is the power consumption difference?

A: The Radeon 840M is rated at 15 W TDP with no power connectors. The B200 SXM6 is rated at 1000 W TDP with a suggested power supply of 1400 W.

Q: Does either GPU support DirectX?

A: The Radeon 840M supports DirectX 12 Ultimate (12_2). The B200 SXM6 lists DirectX as N/A.

Q: What are the respective process nodes?

A: The Radeon 840M uses TSMC’s 4 nm process. The B200 SXM6 uses TSMC’s 5 nm process.

Q: How many tensor cores does each GPU have?

A: The B200 SXM6 has 592 tensor cores. The Radeon 840M has no tensor core listing.

Where Each One Wins

The AMD Radeon 840M wins in any scenario requiring graphics output. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, making it compatible with modern games and graphics applications. Its display outputs are portable device dependent, meaning it works in laptops and similar hardware. The 15 W TDP allows operation without external power connectors, and the PCIe 4.0 x8 interface suits mainstream mobile platforms. Its 4 nm process and 2900 MHz boost clock suggest efficient high-frequency operation within its 256-shader configuration.

The NVIDIA B200 SXM6 wins in compute-heavy environments. Its 18,944 shading units and 592 tensor cores provide massive parallel processing capability. The 180 GB HBM3e memory with 8.19 TB/s bandwidth eliminates memory bottlenecks for large models. The 69.34 TFLOPS FP32 and FP16 throughput supports both precision levels at the same rate. The 8192-bit memory bus and 1628 mm² die size indicate a design optimized for maximum throughput rather than efficiency. The 1000 W TDP and 1400 W suggested power supply reflect its data center role, and the PCIe 6.0 x16 interface ensures high-speed host connectivity.

Neither part wins in the other’s domain. The Radeon cannot approach the B200’s compute density, and the B200 cannot output video or run standard graphics APIs. The Radeon’s system shared memory contrasts with the B200’s dedicated HBM3e, making the latter superior for memory-intensive tasks. The B200’s 5 nm process and 120 MHz base clock show a design prioritizing sustained throughput over clock speed, while the Radeon’s 4 nm process and 400 MHz base clock favor mobile efficiency.

Specification Differences

The following fields differ between the two GPUs:

• Chip: Krackan Point (AMD) versus GB100 (NVIDIA)
• Architecture: RDNA 3.5 versus Blackwell
• Generation: Navi III IGP (Strix Point Mobile) versus Server Blackwell (Bxx)
• Process Node: 4 nm versus 5 nm
• Transistors: unknown versus 208,000 million
• Die Size: unknown versus 1628 mm²
• Transistor Density: not listed versus 127.8M / mm²
• Base Clock: 400 MHz versus 120 MHz
• Boost Clock: 2900 MHz versus 1830 MHz
• Memory Size: System Shared versus 180 GB
• Memory Type: System Shared versus HBM3e
• Memory Bus Width: System Shared versus 8192 bit
• Memory Bandwidth: System Dependent versus 8.19 TB/s
• Shading Units: 256 versus 18,944
• TMUs: 16 versus 592
• ROPs: 8 versus 24
• RT Cores: 4 versus not listed
• Tensor Cores: not listed versus 592
• Pixel Rate: 23.20 GPixel/s versus 43.92 GPixel/s
• Texture Rate: 46.40 GTexel/s versus 1,083.4 GTexel/s
• FP32: 1,484.8 GFLOPS versus 69.34 TFLOPS
• FP16: 1,484.8 GFLOPS versus 69.34 TFLOPS
• TDP: 15 W versus 1000 W
• Slot Width: IGP versus SXM Module
• Power Connectors: None versus not listed
• Suggested PSU: not listed versus 1400 W
• Bus Interface: PCIe 4.0 x8 versus PCIe 6.0 x16
• Display Outputs: Portable Device Dependent versus No outputs
• DirectX: 12 Ultimate (12_2) versus N/A
• OpenGL: 4.6 versus N/A
• Vulkan: 1.4 versus N/A
• Release Date: 2025-02-28 versus 2024-10-31
• Predecessor: Navi II IGP versus Server Hopper
• Successor: not listed versus Server Rubin
• Launch MSRP: not listed versus 34,999 USD

The Radeon 840M uses a newer process node and offers graphics API support. The B200 SXM6 provides vastly larger memory, compute resources, and bandwidth. Both are listed as Active in production status, and both hold a 50th percentile ranking across all GPUs in the database.