NVIDIA GeForce RTX 3090 Ti vs NVIDIA L20 Comparison

The Verdict

The NVIDIA L20 is the clear winner in this comparison based on the recorded benchmark data. It wins both head-to-head tests, with a substantial 57.2% lead in Geekbench OpenCL and a narrower 5.7% advantage in Geekbench Vulkan. The L20 also sits in the 99th percentile of all GPUs in the database, while the RTX 3090 Ti sits in the 95th percentile. For buyers who prioritize compute performance, the L20 is the decisive choice.

The RTX 3090 Ti is not without merit, but its role is different. It is an end-of-life product, whereas the L20 remains active in production. The L20 also offers double the memory capacity at 48 GB versus 24 GB, a critical factor for large workloads. The RTX 3090 Ti's only advantage lies in its raw memory bandwidth, listed at 1.01 TB/s compared to the L20's 864.0 GB/s, but this does not translate into a single benchmark win. The data suggests the L20 is the better investment for compute-focused buyers, while the RTX 3090 Ti appeals only to those who specifically need high bandwidth on a GeForce platform.

Where Each One Wins

The L20 wins every recorded benchmark category. In Geekbench OpenCL, the L20 scores 274,276 against the RTX 3090 Ti's 174,441, a 57.2% margin. In Geekbench Vulkan, the L20 scores 228,018 against 215,633, a 5.7% margin. The L20's average benchmark score is 251,147, which is nearly double the RTX 3090 Ti's average of 131,938.

The RTX 3090 Ti's only statistical edge is memory bandwidth. The database records 1.01 TB/s for the RTX 3090 Ti versus 864.0 GB/s for the L20. This could benefit workloads that are purely bandwidth-bound, but no benchmark in the recorded data confirms this advantage. The RTX 3090 Ti also has a higher base clock at 1560 MHz versus the L20's 1440 MHz, but the L20's boost clock of 2520 MHz exceeds the RTX 3090 Ti's 1860 MHz. The L20 wins on shading units (11,776 versus 10,752), texture mapping units (368 versus 336), render output units (128 versus 112), ray tracing cores (92 versus 84), and tensor cores (368 versus 336). The L20 also has a higher pixel rate at 322.6 GPixel/s versus 208.3 GPixel/s, and a higher texture rate at 927.4 GTexel/s versus 625.0 GTexel/s. In floating-point performance, the L20 delivers 59.35 TFLOPS FP32 and FP16, while the RTX 3090 Ti delivers 40.00 TFLOPS in both.

Architecture Differences

The two GPUs come from different NVIDIA architectures and manufacturing nodes. The L20 uses the AD102 chip built on Ada Lovelace architecture, fabricated by TSMC on a 5 nm process. The RTX 3090 Ti uses the GA102 chip built on Ampere architecture, fabricated by Samsung on an 8 nm process. This node difference is significant: the L20 packs 76,300 million transistors on a 609 mm² die, giving a transistor density of 125.3 million per mm². The RTX 3090 Ti packs 28,300 million transistors on a larger 628 mm² die, giving a density of only 45.1 million per mm². The L20 achieves more than 2.7 times the transistor density of the RTX 3090 Ti, which explains its performance advantage despite the smaller die.

Memory configurations also differ. The L20 uses 48 GB of GDDR6 on a 384-bit bus, while the RTX 3090 Ti uses 24 GB of GDDR6X on the same 384-bit bus. The L20's memory clock is listed as 2250 MHz with 18 Gbps effective, while the RTX 3090 Ti's memory clock is 1313 MHz with 21 Gbps effective. The GDDR6X memory on the RTX 3090 Ti delivers higher bandwidth, but the L20 compensates with double the capacity. The L20's power draw is 275 W, while the RTX 3090 Ti draws 450 W. The L20 is a dual-slot card, while the RTX 3090 Ti is triple-slot. Both use a single 16-pin power connector, but the L20 suggests a 600 W power supply versus the RTX 3090 Ti's 850 W suggestion. Physical dimensions also differ: the L20 measures 267 mm in length and 111 mm in height, while the RTX 3090 Ti measures 336 mm in length, 140 mm in height, and 61 mm in width.

The L20 belongs to the Server Ada (Lxx) generation, while the RTX 3090 Ti belongs to the GeForce 30 series. The L20's predecessor is Server Ampere, and its successor is Server Hopper. The RTX 3090 Ti's predecessor is GeForce 20, and its successor is GeForce 40. Both support the same API levels: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Display outputs differ, with the L20 offering 4x DisplayPort 1.4a and the RTX 3090 Ti offering 1x HDMI 2.1 and 3x DisplayPort 1.4a.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The NVIDIA L20 has an average benchmark score of 251,147, while the NVIDIA GeForce RTX 3090 Ti has an average of 131,938. The L20's score is roughly 90% higher than the RTX 3090 Ti's.

Q: How does the memory capacity compare between the two?

A: The L20 has 48 GB of GDDR6 memory, while the RTX 3090 Ti has 24 GB of GDDR6X memory. Both use a 384-bit bus, but the L20 has double the capacity.

Q: Which GPU has higher memory bandwidth?

A: The RTX 3090 Ti records a bandwidth of 1.01 TB/s, which is higher than the L20's 864.0 GB/s. This is the only specification where the RTX 3090 Ti leads.

Q: What is the power consumption difference?

A: The L20 has a TDP of 275 W, while the RTX 3090 Ti has a TDP of 450 W. The L20 also suggests a 600 W power supply, while the RTX 3090 Ti suggests an 850 W power supply.

Q: Which GPU is still in production?

A: The L20 has an active production status, while the RTX 3090 Ti is listed as end-of-life.

Q: How do the benchmark wins break down?

A: The L20 wins both head-to-head tests: Geekbench OpenCL and Geekbench Vulkan. The RTX 3090 Ti records zero wins in the head-to-head benchmark data.

Head-to-Head Benchmarks

The most decisive result is in Geekbench OpenCL. The L20 scores 274,276, while the RTX 3090 Ti scores 174,441. This represents a 57.2% advantage for the L20. The margin is large enough to indicate a fundamental performance gap, not a marginal one. The L20's shading unit count of 11,776 versus 10,752 and its higher boost clock of 2520 MHz versus 1860 MHz are likely contributors to this result. The L20's FP32 throughput of 59.35 TFLOPS versus 40.00 TFLOPS also aligns with this performance gap.

The Geekbench Vulkan result is closer but still favors the L20. The L20 scores 228,018, while the RTX 3090 Ti scores 215,633, a 5.7% difference. Vulkan workloads often stress driver efficiency and memory bandwidth, and the RTX 3090 Ti's higher bandwidth of 1.01 TB/s may narrow the gap. However, the L20's architectural advantages, including more ray tracing cores (92 versus 84) and tensor cores (368 versus 336), keep it ahead.

In context of the broader database, the L20's nearest rivals include the NVIDIA L40 at 284,111, which is 11.6% above the L20, and the NVIDIA RTX 6000 Ada Generation at 287,237, which is 12.6% above. On the lower end, the L20 sits 11.6% above the NVIDIA PG506-232 and 14.2% above the AMD Radeon PRO W7900D. The RTX 3090 Ti's nearest rivals are much closer: it sits 0.7% above the NVIDIA L4, 2.4% above the NVIDIA RTX 4000 Ada Generation, 2.4% above the NVIDIA A10M, and 2.6% above the AMD Radeon PRO W6800. This comparison shows that the L20 competes in a higher performance tier than the RTX 3090 Ti. The L20's 99th percentile ranking versus the RTX 3090 Ti's 95th percentile reinforces this positioning.

Specification Differences

The two GPUs differ in nearly every major specification. The L20 uses the AD102 chip on Ada Lovelace architecture, while the RTX 3090 Ti uses the GA102 chip on Ampere architecture. The process node is 5 nm for the L20 and 8 nm for the RTX 3090 Ti. The L20 has 76,300 million transistors on a 609 mm² die, while the RTX 3090 Ti has 28,300 million transistors on a 628 mm² die. Transistor density is 125.3 million per mm² for the L20 and 45.1 million per mm² for the RTX 3090 Ti.

Clock speeds favor the L20 on boost, with 2520 MHz versus 1860 MHz, but the RTX 3090 Ti has a higher base clock of 1560 MHz versus 1440 MHz. Memory capacity favors the L20 at 48 GB versus 24 GB, while memory type favors the RTX 3090 Ti with GDDR6X versus GDDR6. Bandwidth favors the RTX 3090 Ti at 1.01 TB/s versus 864.0 GB/s. The L20 leads in shading units (11,776 versus 10,752), TMUs (368 versus 336), ROPs (128 versus 112), RT cores (92 versus 84), and tensor cores (368 versus 336). Pixel rate is 322.6 GPixel/s for the L20 versus 208.3 GPixel/s for the RTX 3090 Ti. Texture rate is 927.4 GTexel/s versus 625.0 GTexel/s. FP32 and FP16 performance is 59.35 TFLOPS for the L20 versus 40.00 TFLOPS for the RTX 3090 Ti.

Power and physical specifications also diverge. The L20 has a TDP of 275 W and is dual-slot, while the RTX 3090 Ti has a TDP of 450 W and is triple-slot. Both use a 1x 16-pin power connector, but the L20 suggests a 600 W PSU versus the RTX 3090 Ti's 850 W. The L20 is 267 mm long and 111 mm tall, while the RTX 3090 Ti is 336 mm long, 140 mm tall, and 61 mm wide. The L20 has four DisplayPort 1.4a outputs, while the RTX 3090 Ti has one HDMI 2.1 and three DisplayPort 1.4a outputs. Both use PCIe 4.0 x16. The L20's launch MSRP is not recorded, while the RTX 3090 Ti has a launch MSRP of 1,999 USD. Production status is active for the L20 and end-of-life for the RTX 3090 Ti. Release dates are November 2023 for the L20 and January 2022 for the RTX 3090 Ti.