AMD Ryzen Z2 GPU vs NVIDIA L20 Comparison

Head-to-Head Benchmarks

The recorded data shows a stark contrast between these two parts. The AMD Ryzen Z2 GPU has no benchmark entries in the database, while the NVIDIA L20 delivers two strong results. The L20 scores 274,276 in Geekbench OpenCL and 228,018 in Geekbench Vulkan, giving it an average benchmark score of 251,147. The Ryzen Z2 GPU sits at a 50th percentile ranking among all GPUs, whereas the L20 places in the 99th percentile. That 49-point percentile gap indicates the L20 occupies a completely different performance tier.

The L20's nearest rivals confirm its position. It leads the NVIDIA PG506-232, which averages 225,124, by 11.6 percent. It also beats the AMD Radeon PRO W7900D, averaging 219,827, by 14.2 percent. However, the L20 trails the NVIDIA L40, which scores 284,111, by 11.6 percent, and the NVIDIA RTX 6000 Ada Generation, scoring 287,237, by 12.6 percent. These deltas show the L20 sits between mid-range server accelerators and the top Ada Lovelace workstation cards.

The Ryzen Z2 GPU's absence of benchmark scores prevents any direct head-to-head comparison. The database records no wins for either part because no common benchmark test was run on both. What the data does show is that the L20 produces measurable results across two API tests, while the Z2 GPU has none recorded. The L20's Vulkan score trails its OpenCL score by roughly 17 percent, a typical pattern where OpenCL workloads extract more throughput from the hardware.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA L20 has an average benchmark score of 251,147, while the AMD Ryzen Z2 GPU has no recorded benchmarks and an average score of 0.

Q: How does the NVIDIA L20 compare to its nearest rivals?

A: The L20 is 11.6 percent faster than the NVIDIA PG506-232 and 14.2 percent faster than the AMD Radeon PRO W7900D, but it trails the NVIDIA L40 by 11.6 percent and the NVIDIA RTX 6000 Ada Generation by 12.6 percent.

Q: What is the memory configuration difference between the two GPUs?

A: The AMD Ryzen Z2 GPU uses 16 GB of LPDDR5X on a 128-bit bus with 119.9 GB/s bandwidth. The NVIDIA L20 uses 48 GB of GDDR6 on a 384-bit bus with 864.0 GB/s bandwidth.

Q: Which GPU has more shading units?

A: The NVIDIA L20 has 11,776 shading units, compared to 768 shading units on the AMD Ryzen Z2 GPU.

Q: What are the TDP ratings for each GPU?

A: The AMD Ryzen Z2 GPU has a 28 W TDP, while the NVIDIA L20 has a 275 W TDP.

Q: Do both GPUs support the same DirectX version?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Where Each One Wins

The NVIDIA L20 wins in every measurable performance category. Its FP32 throughput reaches 59.35 TFLOPS, more than seven times the Ryzen Z2 GPU's 8.294 TFLOPS. The L20 also delivers 59.35 TFLOPS FP16 with a 1:1 ratio, while the Z2 GPU offers the same 8.294 TFLOPS FP16, also at 1:1. The L20's texture rate of 927.4 GTexel/s dwarfs the Z2 GPU's 129.6 GTexel/s, and its pixel rate of 322.6 GPixel/s compares favorably against 86.40 GPixel/s.

Memory bandwidth is another decisive win for the L20. The L20's 864.0 GB/s is over seven times the Z2 GPU's 119.9 GB/s. The L20 carries 48 GB of memory versus 16 GB, and it uses a 384-bit bus compared to 128-bit. The L20's 92 ray tracing cores and 368 tensor cores provide hardware acceleration that the Z2 GPU's 12 RT cores cannot match, though the Z2 GPU does include some RT capability.

The AMD Ryzen Z2 GPU wins on efficiency and physical footprint. Its 28 W TDP is roughly one-tenth of the L20's 275 W draw. The Z2 GPU requires no power connectors, while the L20 needs a 16-pin connector and a 600 W suggested PSU. The Z2 GPU's 178 mm² die size on a 4 nm TSMC process contrasts with the L20's 609 mm² die on 5 nm TSMC. The Z2 GPU also uses a single USB Type-C display output, while the L20 provides four DisplayPort 1.4a outputs.

For use cases, the L20 suits server and workstation workloads that demand high compute throughput, large memory pools, and ray tracing performance. The Z2 GPU fits low-power, compact designs where the 28 W envelope and integrated-style connectivity matter more than raw throughput. The Z2 GPU's 50th percentile ranking places it in the middle of the database's GPU distribution, while the L20's 99th percentile marks it as a top-tier accelerator.

Specification Differences

The two GPUs differ in nearly every measured specification. The AMD Ryzen Z2 GPU uses the Hawk Point chip with RDNA 3.0 architecture, fabricated on a 4 nm process at TSMC with 25,390 million transistors on a 178 mm² die. The NVIDIA L20 uses the AD102 chip with Ada Lovelace architecture, also TSMC but on a 5 nm process, with 76,300 million transistors on a 609 mm² die. Transistor density favors the Z2 GPU at 142.6M per mm² versus 125.3M per mm² for the L20.

Clock speeds show a mixed picture. The Z2 GPU has a base clock of 800 MHz and a boost of 2700 MHz. The L20 starts higher at 1440 MHz base but boosts to 2520 MHz. Memory clocks differ significantly: the Z2 GPU runs at 937 MHz with 7.5 Gbps effective, while the L20 runs at 2250 MHz with 18 Gbps effective.

Memory subsystem specs diverge completely. The Z2 GPU uses 16 GB of LPDDR5X across a 128-bit bus. The L20 uses 48 GB of GDDR6 across a 384-bit bus. Bandwidth measures 119.9 GB/s for the Z2 GPU and 864.0 GB/s for the L20. The Z2 GPU has no bus interface listed, while the L20 uses PCIe 4.0 x16.

Compute unit counts separate the parts widely. The Z2 GPU has 768 shading units, 48 TMUs, 32 ROPs, and 12 RT cores. The L20 has 11,776 shading units, 368 TMUs, 128 ROPs, 92 RT cores, and 368 tensor cores. The L20 also lists dimensions of 267 mm length and 111 mm height with a dual-slot form factor, while the Z2 GPU has no dimensions recorded.

Power and connectivity also differ. The Z2 GPU's TDP is 28 W with no power connectors and no suggested PSU. The L20's TDP is 275 W, uses one 16-pin connector, and suggests a 600 W PSU. Display outputs are one USB Type-C on the Z2 GPU versus four DisplayPort 1.4a on the L20. Both GPUs are active in production, but the Z2 GPU released on 2024-12-31 while the L20 released on 2023-11-15.

Architecture Differences

The architectural split reflects their different design goals. The AMD Ryzen Z2 GPU uses RDNA 3.0, AMD's graphics architecture built for efficiency in constrained power envelopes. Its 4 nm process at TSMC yields a dense 142.6M transistors per mm², allowing 25,390 million transistors on a compact 178 mm² die. The 28 W TDP indicates a design tuned for mobile or embedded scenarios where thermal limits are strict.

The NVIDIA L20 uses Ada Lovelace, NVIDIA's server and workstation architecture. The AD102 chip is a large design, packing 76,300 million transistors onto 609 mm² using a 5 nm TSMC process. The lower transistor density of 125.3M per mm² reflects the larger, more complex chip layout. The 275 W TDP positions it as a full-power accelerator meant for dedicated server slots.

RDNA 3.0 implements ray tracing through 12 dedicated RT cores, but it lacks tensor cores entirely. The Z2 GPU's FP32 and FP16 throughput are identical at 8.294 TFLOPS, indicating a 1:1 ratio that simplifies compute but limits mixed-precision acceleration. The L20's Ada Lovelace architecture includes 92 RT cores and 368 tensor cores, enabling hardware-accelerated ray tracing and AI inference workloads. Its FP32 and FP16 also run at 59.35 TFLOPS with a 1:1 ratio, but the tensor cores add specialized throughput beyond those raw numbers.

The memory architectures follow different philosophies. The Z2 GPU uses LPDDR5X, a low-power memory type commonly paired with integrated or mobile processors. The L20 uses GDDR6, a dedicated graphics memory with much higher bandwidth. The Z2 GPU's 128-bit bus and 119.9 GB/s bandwidth serve light workloads, while the L20's 384-bit bus and 864.0 GB/s bandwidth feed a massive compute pipeline.

The L20's predecessor and successor are recorded as Server Ampere and Server Hopper, placing it within NVIDIA's server GPU lineage. The Z2 GPU has no predecessor or successor listed, standing alone in the database. Both support the same API set: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so software compatibility is identical even though hardware capabilities diverge sharply. The L20's generation is listed as Server Ada (Lxx), while the Z2 GPU's generation is Console GPU (AMD), a label that reflects its intended deployment in low-power gaming or console-like devices.