AMD Radeon RX 7800M vs NVIDIA B200 SXM6 Comparison

FAQ

Q: How do the two GPUs compare in raw compute performance?

A: The NVIDIA B200 SXM6 delivers 69.34 TFLOPS FP32, while the AMD Radeon RX 7800M delivers 35.87 TFLOPS FP32. Both achieve FP16 at a 1:1 ratio with FP32.

Q: What are the memory configurations?

A: The AMD Radeon RX 7800M uses 12 GB of GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth. The NVIDIA B200 SXM6 uses 180 GB of HBM3e on a 8192-bit bus with 8.19 TB/s bandwidth.

Q: Which GPU has more shading units?

A: The NVIDIA B200 SXM6 has 18,944 shading units, compared to 3,840 on the AMD Radeon RX 7800M.

Q: What are the power requirements?

A: The AMD Radeon RX 7800M has a TDP of 180 W and uses no power connectors. The NVIDIA B200 SXM6 has a TDP of 1000 W and a suggested PSU of 1400 W.

Q: What is the release timeline?

A: The AMD Radeon RX 7800M was released on 2024-09-10. The NVIDIA B200 SXM6 was released on 2024-10-31.

Q: What is the launch MSRP of the NVIDIA B200 SXM6?

A: The launch MSRP is 34,999 USD. The AMD Radeon RX 7800M has no recorded launch MSRP.

Architecture Differences

The two GPUs come from fundamentally different design philosophies. The AMD Radeon RX 7800M is built on RDNA 3.0 architecture using the Navi 32 chip, codenamed Wheat Nas. It belongs to the Navi Mobile (RX 7000M) generation. The NVIDIA B200 SXM6 uses Blackwell architecture with the GB100 chip and belongs to the Server Blackwell (Bxx) generation. Both are fabricated on a 5 nm process at TSMC, but the transistor counts diverge sharply: the RX 7800M packs 28,100 million transistors on a 346 mm² die, while the B200 SXM6 packs 208,000 million transistors on a 1628 mm² die. Transistor density favors the B200 at 127.8M per mm² versus 81.2M per mm² for the AMD part.

The AMD GPU includes 60 ray tracing cores, while the NVIDIA part lists no RT cores in the database. Conversely, the B200 SXM6 includes 592 tensor cores, while the RX 7800M lists none. The RX 7800M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The B200 SXM6 reports N/A for DirectX, OpenGL, and Vulkan, reflecting its server-oriented role with no display outputs. The RX 7800M is an integrated graphics package (IGP) with portable-device-dependent display outputs, while the B200 SXM6 is an SXM Module with no outputs.

Clock behavior also differs. The RX 7800M has a base clock of 1295 MHz, a boost of 2335 MHz, and a game clock of 2145 MHz. The B200 SXM6 has a base clock of 120 MHz and a boost of 1830 MHz, with no game clock listed. The B200's low base clock reflects its massive, power-hungry design. Memory type and bus width underscore the gap: GDDR6 on a 192-bit bus versus HBM3e on a 8192-bit bus.

Head-to-Head Benchmarks

The database contains benchmark results for the AMD Radeon RX 7800M only; the NVIDIA B200 SXM6 has no recorded benchmark scores. The RX 7800M's recorded scores include a 3DMark Steel Nomad DX12 result of 2994, Geekbench OpenCL of 120778, Geekbench Vulkan of 126668, Passmark G3D of 17613, and Passmark GPU Compute of 9342. Its average benchmark score is 27883. The B200 SXM6 has an average benchmark score of 0 and a percentile of 50, which reflects the absence of data rather than performance.

Without head-to-head benchmark entries, the comparison relies on architectural and specification data. The B200 SXM6 offers nearly double the FP32 throughput (69.34 TFLOPS versus 35.87 TFLOPS) and roughly 19 times the memory bandwidth (8.19 TB/s versus 432.0 GB/s). It also has about 5 times the shading units (18,944 versus 3,840) and 2.5 times the texture rate (1,083.4 GTexel/s versus 560.4 GTexel/s). However, the RX 7800M has a higher pixel rate at 224.2 GPixel/s versus 43.92 GPixel/s for the B200, a consequence of the B200's much lower ROP count (24 versus 96).

The RX 7800M sits at the 73rd percentile among all GPUs in the database. Its nearest rivals, by average score, are the AMD Radeon Pro Vega 20 (27839, delta 0.2%), AMD Radeon Pro W5500X (27973, delta -0.3%), NVIDIA GeForce GTX 980 Ti (28020, delta -0.5%), and AMD FirePro S7150 (28117, delta -0.8%). These deltas are all within 1% of the RX 7800M's average, indicating it clusters with mid-range workstation and older high-end parts. The B200 SXM6 has no nearest rivals recorded.

The Verdict

The data points to two entirely different products. The AMD Radeon RX 7800M is a mobile-oriented GPU with a 180 W TDP, integrated design, and a full suite of graphics APIs. Its benchmark scores place it at the 73rd percentile, with performance comparable to the Radeon Pro Vega 20 and GeForce GTX 980 Ti. For a laptop or portable device, it delivers solid rasterization and compute capability within a modest power envelope.

The NVIDIA B200 SXM6 is a server accelerator with a 1000 W TDP, 180 GB of HBM3e, and 69.34 TFLOPS FP32. It has no display outputs, no graphics API support in the database, and a suggested PSU of 1400 W. Its 8.19 TB/s memory bandwidth is in a different class entirely. The B200 is designed for compute-heavy server workloads, not graphics rendering. Its launch MSRP of 34,999 USD reflects that positioning.

The verdict depends on the workload. For graphics, gaming, or mobile use, the RX 7800M is the only viable option, as the B200 cannot output video. For massive parallel compute, memory bandwidth, and tensor operations, the B200 SXM6 clearly dominates on paper. The RX 7800M's 73rd percentile and its cluster of nearest rivals show it performs near established desktop parts like the GTX 980 Ti. The B200's lack of benchmark data prevents a direct performance comparison, but its specification sheet indicates a purpose-built compute monster.

Specification Differences

The following fields differ between the two GPUs:

• Series: Radeon RX 7000 series (A) versus none listed (B)
• Chip: Navi 32 (A) versus GB100 (B)
• Architecture: RDNA 3.0 (A) versus Blackwell (B)
• Codename: Wheat Nas (A) versus none listed (B)
• Generation: Navi Mobile (RX 7000M) (A) versus Server Blackwell (Bxx) (B)
• Transistors: 28,100 million (A) versus 208,000 million (B)
• Die Size: 346 mm² (A) versus 1628 mm² (B)
• Transistor Density: 81.2M / mm² (A) versus 127.8M / mm² (B)
• Base Clock: 1295 MHz (A) versus 120 MHz (B)
• Boost Clock: 2335 MHz (A) versus 1830 MHz (B)
• Game Clock: 2145 MHz (A) versus none listed (B)
• Memory Size: 12 GB (A) versus 180 GB (B)
• Memory Type: GDDR6 (A) versus HBM3e (B)
• Memory Bus Width: 192 bit (A) versus 8192 bit (B)
• Memory Bandwidth: 432.0 GB/s (A) versus 8.19 TB/s (B)
• Shading Units: 3840 (A) versus 18944 (B)
• TMUs: 240 (A) versus 592 (B)
• ROPs: 96 (A) versus 24 (B)
• RT Cores: 60 (A) versus none listed (B)
• Tensor Cores: none listed (A) versus 592 (B)
• Pixel Rate: 224.2 GPixel/s (A) versus 43.92 GPixel/s (B)
• Texture Rate: 560.4 GTexel/s (A) versus 1,083.4 GTexel/s (B)
• FP32: 35.87 TFLOPS (A) versus 69.34 TFLOPS (B)
• TDP: 180 W (A) versus 1000 W (B)
• Slot Width: IGP (A) versus SXM Module (B)
• Power Connectors: None (A) versus none listed (B)
• Suggested PSU: none listed (A) versus 1400 W (B)
• Bus Interface: PCIe 4.0 x16 (A) versus PCIe 6.0 x16 (B)
• Display Outputs: Portable Device Dependent (A) versus No outputs (B)
• DirectX: 12 Ultimate (12_2) (A) versus N/A (B)
• OpenGL: 4.6 (A) versus N/A (B)
• Vulkan: 1.4 (A) versus N/A (B)
• Release Date: 2024-09-10 (A) versus 2024-10-31 (B)
• Predecessor: Polaris Mobile (A) versus Server Hopper (B)
• Successor: none listed (A) versus Server Rubin (B)
• Launch MSRP: none listed (A) versus 34,999 USD (B)

Identical fields include process node (5 nm), foundry (TSMC), FP16 (35.87 TFLOPS for A, 69.34 TFLOPS for B, both at 1:1 with FP32), and production status (Active).

Where Each One Wins

AMD Radeon RX 7800M wins in: pixel throughput (224.2 GPixel/s versus 43.92 GPixel/s), ROP count (96 versus 24), ray tracing support (60 RT cores versus none listed), graphics API compatibility (DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4 versus N/A), power efficiency per the TDP figures (180 W versus 1000 W), and portability (IGP form factor versus SXM Module). Its 73rd percentile ranking and average benchmark score of 27883 give it a measurable performance baseline. The nearest rival data shows it trades blows with the Radeon Pro Vega 20 (0.2% ahead) and the Radeon Pro W5500X (0.3% behind), making it a competitive mid-range option.

NVIDIA B200 SXM6 wins in: raw FP32 compute (69.34 TFLOPS versus 35.87 TFLOPS), memory capacity (180 GB versus 12 GB), memory bandwidth (8.19 TB/s versus 432.0 GB/s), shading units (18,944 versus 3,840), TMUs (592 versus 240), tensor cores (592 versus none listed), texture rate (1,083.4 GTexel/s versus 560.4 GTexel/s), transistor count (208,000 million versus 28,100 million), die size (1628 mm² versus 346 mm²), and bus interface (PCIe 6.0 x16 versus PCIe 4.0 x16). It also has a successor listed (Server Rubin), indicating an active roadmap.

The use-case split is clear. The RX 7800M suits graphics rendering, gaming, and portable devices where display output and API support matter. The B200 SXM6 suits server-side compute, AI training, and memory-bound workloads where bandwidth and tensor performance dominate. The B200's 8.19 TB/s bandwidth is roughly 19 times the RX 7800M's 432.0 GB/s, and its FP32 output is nearly double. For any workload that can utilize 180 GB of HBM3e, the B200 is the obvious choice. For anything requiring a monitor, the RX 7800M is the only choice between these two.