AMD Radeon PRO W7700 vs NVIDIA L20 Comparison

Head-to-Head Benchmarks

The benchmark data presents a decisive picture. Across both recorded tests, the NVIDIA L20 wins outright, and the margins are substantial. In the Geekbench OpenCL test, the L20 scores 274,276 against the Radeon PRO W7700's 108,245, a delta of 153.4%. That is more than double the compute output in a raw, general-purpose workload. The Vulkan results narrow the gap somewhat but still favor NVIDIA heavily: the L20 records 228,018 versus 129,706, a 75.8% advantage. The database shows two wins for the L20 and zero for the AMD card.

What makes these numbers striking is not just the victory but the scale. A 153.4% lead in OpenCL suggests fundamental throughput differences, not minor architectural tweaks. The Vulkan gap, while smaller, remains over 75%, indicating that even in a lower-level API the L20 holds a commanding edge. The Radeon PRO W7700's average benchmark score sits at 118,976, placing it in the 95th percentile of all GPUs. The L20's average is 251,147, landing in the 99th percentile. That percentile jump from 95 to 99 represents a massive leap in overall standing, moving from a strong performer to a top-tier compute part.

Looking at the rival context reinforces this. The L20's nearest rivals include the NVIDIA L40 with an average score of 284,111 (11.6% higher) and the RTX 6000 Ada Generation at 287,237 (12.6% higher). So the L20 sits just below those flagship workstation cards, but it is far above the Radeon PRO W7700's competition. The AMD card's nearest rivals are the NVIDIA GB10 at 117,393 (1.3% higher), the RTX 4000 SFF Ada Generation at 117,088 (1.6% higher), and the Tesla V100 SXM2 16 GB at 114,395 (4.0% higher). The W7700 is essentially trading blows with older and smaller NVIDIA parts, while the L20 is competing with the top of the stack. The data implies a clear class separation.

Architecture Differences

The silicon behind these two cards explains the benchmark chasm. The NVIDIA L20 uses the AD102 chip on the Ada Lovelace architecture, fabricated on a 5 nm process at TSMC. It packs 76,300 million transistors on a 609 mm² die, yielding a transistor density of 125.3 million per square millimeter. The AMD Radeon PRO W7700 uses the Navi 32 chip with RDNA 3.0 architecture, codenamed "Wheat Nas," also on a 5 nm TSMC process. However, it contains only 28,100 million transistors on a 346 mm² die, with a density of 81.2 million per square millimeter. That is a 2.7x difference in transistor count, and a density gap of over 50%. The L20 is a much larger, more complex chip.

Compute resources diverge sharply. The L20 features 11,776 shading units, 368 texture mapping units, and 128 raster output units. The W7700 has 3,072 shading units, 192 TMUs, and 96 ROPs. The L20's FP32 throughput is rated at 59.35 TFLOPS, while the W7700 delivers 31.95 TFLOPS. Interestingly, the FP16 picture flips: the L20 does 59.35 TFLOPS at a 1:1 ratio, while the W7700 hits 63.90 TFLOPS at a 2:1 ratio. That means the AMD card actually exceeds the NVIDIA part in half-precision compute, a notable reversal. The L20 counters with 92 RT cores and 368 tensor cores, while the W7700 has 48 RT cores and no listed tensor cores. For AI and ray tracing workloads, the L20 has dedicated hardware the AMD card lacks entirely.

Memory configurations reinforce the performance split. The L20 carries 48 GB of GDDR6 on a 384-bit bus, delivering 864.0 GB/s of bandwidth. The W7700 has 16 GB of GDDR6 on a 256-bit bus, with 576.0 GB/s. Both run memory at 2250 MHz with 18 Gbps effective, but the wider bus gives NVIDIA a 50% bandwidth advantage. The L20's pixel rate is 322.6 GPixel/s versus 249.6 GPixel/s for the AMD card, and the texture rate is 927.4 GTexel/s against 499.2 GTexel/s. These are not subtle differences; they reflect a chip designed for maximum throughput versus one aimed at a lower power envelope.

Power and physical specs differ as well. The L20 has a TDP of 275 W with a suggested PSU of 600 W and a single 16-pin connector. The W7700 draws 190 W, needs only a 450 W PSU, and uses a single 8-pin connector. The L20 is longer at 267 mm (10.5 inches) versus 241 mm (9.5 inches), both dual-slot designs with 111 mm height. Display outputs differ: the L20 offers 4x DisplayPort 1.4a, while the W7700 has 4x DisplayPort 2.1. Both use PCIe 4.0 x16. The L20's 275 W TDP is 44.7% higher than the W7700's 190 W, which partly explains the performance gap but also suggests different deployment scenarios.

The Verdict

The recorded data points to a straightforward conclusion for most workloads: the NVIDIA L20 is the superior compute card. Its average benchmark score of 251,147 is more than double the W7700's 118,976, a 111.1% overall advantage. In OpenCL, the L20 leads by 153.4%, and in Vulkan by 75.8%. For any task that stresses raw FP32 throughput, memory bandwidth, or AI acceleration via tensor cores, the L20 is the clear choice. The 48 GB memory capacity also allows larger datasets to reside on-card, avoiding PCIe transfers.

However, the Radeon PRO W7700 is not without merit. Its FP16 output of 63.90 TFLOPS exceeds the L20's 59.35 TFLOPS, so workloads that rely heavily on half-precision math may see a different balance. The W7700 also consumes less power: 190 W versus 275 W, a 30.9% reduction. For systems with tight power budgets or smaller PSUs (450 W suggested versus 600 W), the AMD card fits more easily. Its DisplayPort 2.1 outputs are newer than the L20's DisplayPort 1.4a, which matters for high-refresh-rate or high-resolution display configurations. The W7700's launch MSRP is 999 USD, but pricing considerations are outside this analysis; the data alone shows a performance hierarchy.

The percentile standings say a lot. The L20 sits in the 99th percentile of all GPUs, while the W7700 is in the 95th. That four-point gap might sound small, but in practice it separates a card that rivals the L40 and RTX 6000 Ada (which score 11.6% and 12.6% higher, respectively) from one that competes with the GB10 and RTX 4000 SFF. The W7700's nearest rival, the GB10, is only 1.3% faster, meaning the AMD card is essentially at parity with a compact AI inference part. The L20, meanwhile, is within 12.6% of the top workstation silicon. The verdict is clear for compute-heavy users: choose the L20. For power-conscious or display-centric setups, the W7700 has specific advantages.

Specification Differences

The specification sheet reveals where the two diverge. The L20 uses the AD102 chip with Ada Lovelace architecture, while the W7700 uses Navi 32 with RDNA 3.0. Transistor counts differ dramatically: 76,300 million versus 28,100 million. Die size is 609 mm² versus 346 mm². Both use a 5 nm TSMC process, but the L20's density is 125.3M per mm² versus 81.2M per mm². Base clocks favor AMD: 1900 MHz versus 1440 MHz, and boost clocks are closer at 2600 MHz versus 2520 MHz. Memory speed is identical at 2250 MHz (18 Gbps effective), but capacity, bus width, and bandwidth all favor NVIDIA: 48 GB versus 16 GB, 384-bit versus 256-bit, and 864.0 GB/s versus 576.0 GB/s.

Compute units show the L20's scale: 11,776 shading units, 368 TMUs, 128 ROPs, 92 RT cores, and 368 tensor cores. The W7700 has 3,072 shading units, 192 TMUs, 96 ROPs, and 48 RT cores, with no tensor cores listed. Pixel and texture rates favor NVIDIA: 322.6 GPixel/s versus 249.6 GPixel/s, and 927.4 GTexel/s versus 499.2 GTexel/s. FP32 is 59.35 TFLOPS versus 31.95 TFLOPS, but FP16 flips to AMD's favor: 63.90 TFLOPS versus 59.35 TFLOPS. Power draw is lower on the AMD side: 190 W versus 275 W, with a suggested PSU of 450 W versus 600 W. Connectors differ: 1x 8-pin versus 1x 16-pin. Display outputs are 4x DisplayPort 2.1 versus 4x DisplayPort 1.4a. Physical length favors AMD at 241 mm versus 267 mm, both 111 mm tall and dual-slot. Both use PCIe 4.0 x16. The L20 has a production status of "Active," while the W7700's status is not recorded. Release dates are close: the W7700 launched on 2023-11-12 and the L20 on 2023-11-15.

FAQ

Q: Which card has a higher average benchmark score?

A: The NVIDIA L20 has an average benchmark score of 251,147, which is 111.1% higher than the AMD Radeon PRO W7700's 118,976.

Q: How does the L20 perform in OpenCL compared to the W7700?

A: The L20 scores 274,276 in Geekbench OpenCL, while the W7700 scores 108,245. The L20 leads by 153.4%.

Q: Does the AMD card have any compute advantage?

A: Yes, the W7700 delivers 63.90 TFLOPS in FP16 at a 2:1 ratio, which exceeds the L20's 59.35 TFLOPS at a 1:1 ratio. The AMD card also has a higher base clock at 1900 MHz versus 1440 MHz.

Q: What is the memory capacity difference?

A: The L20 has 48 GB of GDDR6 on a 384-bit bus with 864.0 GB/s bandwidth. The W7700 has 16 GB on a 256-bit bus with 576.0 GB/s.

Q: Which card requires more power?

A: The L20 has a TDP of 275 W with a suggested PSU of 600 W. The W7700 has a TDP of 190 W with a suggested PSU of 450 W.

Q: Does the W7700 have tensor cores?

A: No, the W7700 has no tensor cores listed. The L20 has 368 tensor cores, which support AI workloads.

Where Each One Wins

The NVIDIA L20 wins decisively in raw compute benchmarks. Its OpenCL score of 274,276 is 153.4% higher, and its Vulkan score of 228,018 is 75.8% higher. For FP32 workloads, the L20's 59.35 TFLOPS doubles the W7700's 31.95 TFLOPS. The 48 GB memory capacity and 864.0 GB/s bandwidth make it suitable for large datasets, AI inference, and rendering tasks that demand both capacity and speed. The tensor cores add a dedicated path for neural network acceleration, something the W7700 cannot offer. The L20's 99th percentile standing among all GPUs places it in the top tier, close to the L40 and RTX 6000 Ada Generation.

The AMD Radeon PRO W7700 wins in specific niches. Its FP16 output of 63.90 TFLOPS exceeds the L20's 59.35 TFLOPS, so half-precision compute tasks like certain scientific simulations or machine learning training with FP16 may see a relative advantage. The lower TDP of 190 W (versus 275 W) makes it a better fit for power-constrained systems, and the suggested 450 W PSU requirement is more modest. DisplayPort 2.1 outputs are newer than DisplayPort 1.4a, supporting higher bandwidth for advanced display setups. The smaller 241 mm length (versus 267 mm) eases installation in compact chassis. The W7700's 95th percentile ranking is still strong, and its nearest rivals (GB10, RTX 4000 SFF, Tesla V100) are all within 4.4%, meaning it holds its own against those parts. For users who prioritize power efficiency, display connectivity, or FP16 throughput, the W7700 has a case; for everything else, the L20 dominates.