AMD Ryzen Z2 A GPU vs NVIDIA B300 SXM6 AC Comparison

Head-to-Head Benchmarks

The database contains a single benchmark score for the NVIDIA B300 SXM6 AC, a Geekbench OpenCL result of 369,831 points. The AMD Ryzen Z2 A GPU has no recorded benchmark scores, and the head-to-head benchmark table is empty. This means direct performance comparisons between the two parts cannot be established from measured data. What can be quantified is the B300's standing against its nearest recorded rivals, which places it at the 100th percentile of all GPUs in the database.

The B300 SXM6 AC outperforms the NVIDIA B200 by 7%, scoring 369,831 versus 345,482. Against the NVIDIA H200 NVL, the lead expands to 10.4%, with the H200 NVL recording 334,891 points. The AMD Instinct MI300X trails by 16.3%, posting 317,994 points. The largest gap in the recorded set is against the NVIDIA L40S, which scores 295,763, putting the B300 25% ahead. These deltas are consistent across a range of accelerator classes, from the B200 (a direct Blackwell-family predecessor in capability) to the H200 NVL and MI300X (both high-memory server parts) and the L40S (a workstation-oriented GPU).

Because the Ryzen Z2 A GPU has no benchmark entries, its percentile ranking of 50 is a placeholder rather than a measured outcome. The B300's 100th percentile is likewise derived from its single score, but it represents a real data point: the recorded OpenCL result is the highest among all GPUs tracked in the database. The Ryzen Z2 A cannot be positioned relative to the B300 using benchmark data, as no overlapping test results exist. The only quantitative conclusion available from the head-to-head section is that the B300 dominates its own competitive set, and the Ryzen Z2 A has no comparable measurements to cite.

Architecture Differences

The two GPUs occupy entirely different segments, and their architectural specifications reflect that split. The AMD Ryzen Z2 A GPU uses the Van Gogh chip with RDNA 2.0 architecture, built on a 7 nm process at TSMC. The NVIDIA B300 SXM6 AC uses the GB110 chip with Blackwell Ultra architecture, also from TSMC but on a 5 nm node. Transistor counts are starkly different: the Ryzen chip integrates 2,400 million transistors on a 163 mm² die, yielding a density of 14.7 million transistors per square millimeter. The B300 packs 208,000 million transistors on a 1,628 mm² die, with a density of 127.8 million per square millimeter. That is a 17.4x transistor advantage for the B300 and a 9.98x density advantage, though the Ryzen die is roughly one-tenth the physical size.

Clock behavior also differs. The Ryzen Z2 A GPU runs at a 1000 MHz base and 1600 MHz boost, with memory at 800 MHz (6.4 Gbps effective). The B300 runs at 1665 MHz base and 2032 MHz boost, with memory at 2000 MHz (8 Gbps effective). The B300's boost clock is 27% higher than the Ryzen's, but the architectural gap is far larger than clock speeds suggest.

Memory subsystems are in different leagues. The Ryzen uses 16 GB of LPDDR5 on a 128-bit bus, delivering 102.4 GB/s of bandwidth. The B300 uses 288 GB of HBM3e on an 8192-bit bus, delivering 8.19 TB/s. That is an 80x bandwidth advantage and an 18x capacity advantage. The B300's memory bus width is 64 times wider, which is the primary driver of its bandwidth figure.

Compute resources follow the same pattern. The Ryzen has 512 shading units, 32 TMUs, 16 ROPs, and 8 RT cores. The B300 has 18,944 shading units, 592 TMUs, and 24 ROPs, with 592 tensor cores and no dedicated RT core count listed. Pixel rate is 25.60 GPixel/s for the Ryzen versus 48.77 GPixel/s for the B300. Texture rate is 51.20 GTexel/s versus 1,202.9 GTexel/s. FP32 throughput is 1.638 TFLOPS for the Ryzen versus 76.99 TFLOPS for the B300. FP16 is 3.277 TFLOPS (2:1 ratio) for the Ryzen versus 76.99 TFLOPS (1:1 ratio) for the B300. The B300's FP32 output is 47x higher, and its FP16 output is 23.5x higher.

Process node differences matter for power density. The Ryzen has a TDP of 15 W, while the B300 is rated at 1100 W, a 73.3x difference. The B300 requires a 1500 W suggested PSU and uses an SXM module slot width, whereas the Ryzen has no slot width listed and no PSU recommendation. The B300 uses a PCIe 6.0 x16 bus interface; the Ryzen has no bus interface listed. Display outputs also diverge: the Ryzen provides one USB Type-C output, while the B300 has no outputs at all. API support is similarly split: the Ryzen supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the B300 lists N/A for all three.

The Verdict

The data supports a straightforward decision based on workload class. The NVIDIA B300 SXM6 AC is a server accelerator with a recorded OpenCL score of 369,831, placing it at the 100th percentile. It outperforms its nearest rivals by 7% to 25%, and its memory capacity (288 GB), bandwidth (8.19 TB/s), and FP32 throughput (76.99 TFLOPS) position it for large-scale compute tasks. The AMD Ryzen Z2 A GPU is a 15 W console-class part with 16 GB of LPDDR5, 1.638 TFLOPS FP32, and a single USB Type-C display output. No benchmark scores exist for it, so its performance cannot be verified against any other GPU in the database.

For users selecting a part for server-side compute, the B300 is the only choice with measured data. For users selecting a part for portable or console-style graphics, the Ryzen Z2 A is the only option with display output and graphics API support. The two parts do not compete in any measurable sense, as the benchmark table is empty and the architectural specifications target different use cases entirely. The B300's 100th percentile ranking and its deltas over the B200, H200 NVL, MI300X, and L40S confirm its position at the top of the recorded performance hierarchy. The Ryzen Z2 A's 50th percentile is not a measured result, so no claim about its relative standing can be made from the database.

FAQ

Q: What is the single benchmark score recorded for the NVIDIA B300 SXM6 AC?

A: The B300 SXM6 AC has one Geekbench OpenCL score of 369,831 points, which places it at the 100th percentile of all GPUs in the database.

Q: How does the B300 SXM6 AC compare to the NVIDIA B200?

A: The B300 scores 369,831 versus the B200's 345,482, a 7% advantage.

Q: Does the AMD Ryzen Z2 A GPU have any benchmark results in the database?

A: No. The Ryzen Z2 A GPU has an empty benchmarks array, an average benchmark score of 0, and a percentile ranking of 50 that is not derived from any recorded test.

Q: What are the memory configurations of the two GPUs?

A: The Ryzen Z2 A GPU uses 16 GB of LPDDR5 on a 128-bit bus with 102.4 GB/s bandwidth. The B300 SXM6 AC uses 288 GB of HBM3e on an 8192-bit bus with 8.19 TB/s bandwidth.

Q: Which GPU has a higher boost clock?

A: The B300 SXM6 AC boosts to 2032 MHz, while the Ryzen Z2 A GPU boosts to 1600 MHz. The B300's base clock is 1665 MHz versus 1000 MHz for the Ryzen.

Q: What is the TDP difference between the two parts?

A: The Ryzen Z2 A GPU is rated at 15 W, and the B300 SXM6 AC is rated at 1100 W. The B300 also lists a suggested PSU of 1500 W, while the Ryzen has no PSU recommendation.

Where Each One Wins

The NVIDIA B300 SXM6 AC wins on every measured performance metric. It has the highest OpenCL score in the database (369,831), a 100th percentile ranking, and leads all four nearest rivals by margins from 7% to 25%. Its FP32 throughput (76.99 TFLOPS) is 47x that of the Ryzen Z2 A GPU (1.638 TFLOPS). Its texture rate (1,202.9 GTexel/s) is 23.5x higher, and its pixel rate (48.77 GPixel/s) is 1.9x higher. Memory bandwidth is 8.19 TB/s versus 102.4 GB/s, an 80x advantage. Memory capacity is 288 GB versus 16 GB. The B300 also has more shading units (18,944 versus 512), more TMUs (592 versus 32), and a wider memory bus (8192-bit versus 128-bit). It uses a 5 nm process with 208,000 million transistors, while the Ryzen uses 7 nm with 2,400 million.

The AMD Ryzen Z2 A GPU wins on power efficiency and integration. Its 15 W TDP is 1.4% of the B300's 1100 W TDP. It has a display output (1x USB Type-C), while the B300 has none. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, whereas the B300 lists N/A for all APIs. The Ryzen's die is 163 mm² versus 1,628 mm², making it far smaller physically. It also has a lower transistor density (14.7M / mm² versus 127.8M / mm²), which correlates with its lower power draw. The Ryzen's RT cores (8) are present, while the B300 lists no RT core count. The Ryzen's FP16 output (3.277 TFLOPS) is higher than its FP32 output (1.638 TFLOPS) due to the 2:1 ratio, whereas the B300 runs FP16 and FP32 at the same 76.99 TFLOPS.

Specification Differences

The two parts differ in nearly every recorded field. The process node is 7 nm for the Ryzen Z2 A GPU versus 5 nm for the B300 SXM6 AC. Transistor count is 2,400 million versus 208,000 million. Die size is 163 mm² versus 1,628 mm². Transistor density is 14.7M / mm² versus 127.8M / mm². Base clock is 1000 MHz versus 1665 MHz. Boost clock is 1600 MHz versus 2032 MHz. Memory clock is 800 MHz (6.4 Gbps effective) versus 2000 MHz (8 Gbps effective). Memory size is 16 GB versus 288 GB. Memory type is LPDDR5 versus HBM3e. Bus width is 128-bit versus 8192-bit. Bandwidth is 102.4 GB/s versus 8.19 TB/s. Shading units are 512 versus 18,944. TMUs are 32 versus 592. ROPs are 16 versus 24. RT cores are 8 versus not listed. Tensor cores are not listed for the Ryzen versus 592 for the B300. Pixel rate is 25.60 GPixel/s versus 48.77 GPixel/s. Texture rate is 51.20 GTexel/s versus 1,202.9 GTexel/s. FP32 is 1.638 TFLOPS versus 76.99 TFLOPS. FP16 is 3.277 TFLOPS (2:1) versus 76.99 TFLOPS (1:1). TDP is 15 W versus 1100 W. Slot width is not listed for the Ryzen versus SXM Module for the B300. Suggested PSU is not listed versus 1500 W. Bus interface is not listed for the Ryzen versus PCIe 6.0 x16 for the B300. Display outputs are 1x USB Type-C versus no outputs. DirectX is 12 Ultimate (12_2) versus N/A. OpenGL is 4.6 versus N/A. Vulkan is 1.4 versus N/A. Release dates are 2024-12-31 for the Ryzen versus 2025-09-10 for the B300. The B300 lists a predecessor (Server Hopper) and successor (Server Rubin); the Ryzen lists neither.