AMD Radeon AI PRO R9700S vs NVIDIA L20 Comparison

FAQ

Q: What are the core architectural differences between the AMD Radeon AI PRO R9700S and the NVIDIA L20?

A: The AMD Radeon AI PRO R9700S uses the Navi 48 chip built on RDNA 4.0 architecture, fabricated on a 4 nm process at TSMC. The NVIDIA L20 uses the AD102 chip built on Ada Lovelace architecture, fabricated on a 5 nm process at TSMC. The AMD card has 53,900 million transistors on a 357 mm² die, while the NVIDIA card has 76,300 million transistors on a 609 mm² die.

Q: How do the memory configurations compare?

A: The AMD Radeon AI PRO R9700S has 32 GB of GDDR6 memory on a 256-bit bus, delivering 644.6 GB/s of bandwidth. The NVIDIA L20 has 48 GB of GDDR6 memory on a 384-bit bus, delivering 864.0 GB/s of bandwidth. The NVIDIA card offers 50% more memory capacity and roughly 34% more bandwidth.

Q: Which card has higher compute throughput?

A: The NVIDIA L20 delivers 59.35 TFLOPS FP32 and 59.35 TFLOPS FP16, while the AMD Radeon AI PRO R9700S delivers 47.84 TFLOPS FP32 and 47.84 TFLOPS FP16. The NVIDIA card is about 24% ahead in raw FP32 and FP16 compute.

Q: What does the recorded benchmark data show for the NVIDIA L20?

A: The NVIDIA L20 has a Geekbench OpenCL score of 274,276 and a Geekbench Vulkan score of 228,018. Its average benchmark score is 251,147, placing it in the 99th percentile of all GPUs in the database. No benchmark scores are recorded for the AMD Radeon AI PRO R9700S, and it sits in the 50th percentile.

Q: How do the power requirements differ?

A: The AMD Radeon AI PRO R9700S has a TDP of 300 W and a suggested PSU of 700 W. The NVIDIA L20 has a TDP of 275 W and a suggested PSU of 600 W. Both cards are dual-slot and use a single 16-pin power connector.

Q: What are the display output differences?

A: The AMD Radeon AI PRO R9700S provides 4x DisplayPort 2.1a outputs. The NVIDIA L20 provides 4x DisplayPort 1.4a outputs. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Where Each One Wins

The NVIDIA L20 dominates in raw compute and memory capacity, making it the stronger choice for workloads that scale with FP32 throughput, large datasets, and high-bandwidth access. Its 59.35 TFLOPS FP32 output exceeds the AMD card's 47.84 TFLOPS by roughly 24%. The 48 GB memory pool is 50% larger than the AMD's 32 GB, and the 864.0 GB/s bandwidth is about 34% higher than the AMD's 644.6 GB/s. Those advantages show up directly in the recorded Geekbench scores, where the L20's OpenCL result of 274,276 and Vulkan result of 228,018 place it in the 99th percentile of all GPUs. The nearest rivals in the database trail by double-digit margins: the NVIDIA PG506-232 sits 11.6% behind, and the AMD Radeon PRO W7900D sits 14.2% behind. The L20 also leads in shading units (11,776 versus 4,096), texture mapping units (368 versus 256), ray tracing cores (92 versus 64), and tensor cores (368 versus none listed).

The AMD Radeon AI PRO R9700S wins where clocks, geometry rates, and efficiency per watt matter. Its boost clock of 2920 MHz and game clock of 2350 MHz are higher than the L20's 2520 MHz boost and 1440 MHz base. The AMD card achieves a pixel rate of 373.8 GPixel/s versus the L20's 322.6 GPixel/s, a 16% advantage in fill rate. Its texture rate of 747.5 GTexel/s trails the L20's 927.4 GTexel/s, but the AMD card does this with far fewer texture units, indicating higher per-unit efficiency. The AMD card also uses a newer PCIe 5.0 x16 interface versus the L20's PCIe 4.0 x16, which matters for systems with bandwidth-hungry host transfers. The 300 W TDP is 25 W higher than the L20's 275 W, but the AMD card delivers its higher pixel rate and clocks within a similar power envelope.

Architecture Differences

The architectural split is clear: RDNA 4.0 versus Ada Lovelace. The AMD Radeon AI PRO R9700S uses the Navi 48 chip, built on TSMC's 4 nm process. The NVIDIA L20 uses the AD102 chip, built on TSMC's 5 nm process. The AMD die measures 357 mm² with 53,900 million transistors, giving a transistor density of 151.0 million per mm². The NVIDIA die is substantially larger at 609 mm² with 76,300 million transistors, but its density is lower at 125.3 million per mm². The smaller AMD die achieves higher density despite fewer total transistors.

The compute resources differ sharply. The AMD card has 4,096 shading units, 256 TMUs, 128 ROPs, and 64 ray tracing cores. The NVIDIA card has 11,776 shading units, 368 TMUs, 128 ROPs, 92 ray tracing cores, and 368 tensor cores. The AMD card has no tensor cores listed, while the L20's 368 tensor cores provide dedicated AI acceleration hardware. Both cards share the same ROP count of 128, meaning pixel output is determined by clock speed rather than ROP quantity. The AMD card's higher boost clock of 2920 MHz drives its pixel rate advantage.

The memory architecture also differs at the physical level. The AMD card uses a 256-bit bus with 32 GB of GDDR6, while the NVIDIA card uses a 384-bit bus with 48 GB of GDDR6. The wider bus on the L20 contributes directly to its 864.0 GB/s bandwidth. The AMD card's memory clock is 2518 MHz (20.1 Gbps effective), while the L20's memory clock is 2250 MHz (18 Gbps effective). The AMD card runs its memory faster per pin, but the L20's wider bus wins overall.

Specification Differences

| Specification | AMD Radeon AI PRO R9700S | NVIDIA L20 |

|---|---|---|

| Chip | Navi 48 | AD102 |

| Architecture | RDNA 4.0 | Ada Lovelace |

| Process node | 4 nm | 5 nm |

| Transistors | 53,900 million | 76,300 million |

| Die size | 357 mm² | 609 mm² |

| Transistor density | 151.0M / mm² | 125.3M / mm² |

| Base clock | 1660 MHz | 1440 MHz |

| Boost clock | 2920 MHz | 2520 MHz |

| Game clock | 2350 MHz | None |

| Memory clock | 2518 MHz (20.1 Gbps effective) | 2250 MHz (18 Gbps effective) |

| Memory size | 32 GB | 48 GB |

| Memory bus | 256 bit | 384 bit |

| Memory bandwidth | 644.6 GB/s | 864.0 GB/s |

| Shading units | 4,096 | 11,776 |

| TMUs | 256 | 368 |

| ROPs | 128 | 128 |

| Ray tracing cores | 64 | 92 |

| Tensor cores | None | 368 |

| Pixel rate | 373.8 GPixel/s | 322.6 GPixel/s |

| Texture rate | 747.5 GTexel/s | 927.4 GTexel/s |

| FP32 | 47.84 TFLOPS | 59.35 TFLOPS |

| FP16 | 47.84 TFLOPS (1:1) | 59.35 TFLOPS (1:1) |

| TDP | 300 W | 275 W |

| Suggested PSU | 700 W | 600 W |

| Bus interface | PCIe 5.0 x16 | PCIe 4.0 x16 |

| Display outputs | 4x DisplayPort 2.1a | 4x DisplayPort 1.4a |

| Height | 109 mm (4.3 inches) | 111 mm (4.4 inches) |

| Width | 39 mm (1.5 inches) | Not listed |

Both cards share the same length of 267 mm (10.5 inches), dual-slot width, single 16-pin power connector, and API support for DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Head-to-Head Benchmarks

The recorded data contains no direct head-to-head benchmark entries between these two cards. The NVIDIA L20 has two Geekbench results: an OpenCL score of 274,276 and a Vulkan score of 228,018. Its average benchmark score is 251,147. The AMD Radeon AI PRO R9700S has no recorded benchmark scores, so the quantitative comparison relies on specification-derived metrics and the L20's position relative to its nearest rivals.

The L20's average score of 251,147 places it 11.6% ahead of the NVIDIA PG506-232 (225,124) and 14.2% ahead of the AMD Radeon PRO W7900D (219,827). It trails the NVIDIA L40 (284,111) by 11.6% and the NVIDIA RTX 6000 Ada Generation (287,237) by 12.6%. These deltas establish the L20 as a mid-to-high performer in the database, sitting in the 99th percentile of all GPUs.

For the AMD card, the specification comparison shows where it can close the gap. The AMD card's pixel rate of 373.8 GPixel/s exceeds the L20's 322.6 GPixel/s by 15.9%. Its boost clock of 2920 MHz is 15.9% higher than the L20's 2520 MHz. The AMD card's texture rate of 747.5 GTexel/s is 19.4% lower than the L20's 927.4 GTexel/s, but the AMD card achieves that with 30.4% fewer TMUs (256 versus 368), indicating higher texture throughput per unit. The AMD card's FP32 output of 47.84 TFLOPS is 19.4% lower than the L20's 59.35 TFLOPS, a significant gap for compute-heavy workloads.

Memory bandwidth is the largest single gap in favor of the L20: 864.0 GB/s versus 644.6 GB/s, a 34% difference. The L20 also has 50% more memory capacity (48 GB versus 32 GB). These memory advantages compound with the L20's higher shading unit count and tensor core presence to create a clear separation in AI and large-data workloads.

The Verdict

The data points to the NVIDIA L20 as the stronger card for compute-intensive and memory-heavy workloads. Its 59.35 TFLOPS FP32 output, 48 GB memory capacity, and 864.0 GB/s bandwidth give it decisive advantages that its 99th percentile benchmark ranking confirms. The L20's OpenCL score of 274,276 and average score of 251,147 show a card that consistently outperforms its nearest rivals by double-digit margins. For workloads that scale with FP32 throughput, large memory pools, or high bandwidth, the L20 is the clear choice.

The AMD Radeon AI PRO R9700S appeals where fill rate and clock speed dominate. Its pixel rate of 373.8 GPixel/s tops the L20's 322.6 GPixel/s, and its boost clock of 2920 MHz is the highest of the two. The 4 nm process and smaller die size (357 mm² versus 609 mm²) indicate a more densely packed design. The AMD card's PCIe 5.0 x16 interface and DisplayPort 2.1a outputs are also newer standards than the L20's PCIe 4.0 x16 and DisplayPort 1.4a. These features make the AMD card suitable for rasterization-heavy tasks and systems that benefit from the latest host interface and display connectivity.

The AMD card has no recorded benchmark scores and sits in the 50th percentile, while the L20 has verified scores in the 99th percentile. The L20's tensor cores (368) versus none listed for the AMD card further separates the two for AI-accelerated tasks. The choice depends on workload: the L20 for compute, memory capacity, and AI acceleration; the AMD card for pixel throughput, clock speed, and modern interface standards.