NVIDIA GeForce RTX 5080 SUPER vs NVIDIA L20 Comparison

The Verdict

The recorded data splits these two NVIDIA cards into entirely different performance classes. The GeForce RTX 5080 SUPER, based on its single 3DMark Steel Nomad DX12 result, scores 3075 points. The L20, measured through Geekbench OpenCL and Vulkan, averages 251147 points. Their percentile rankings confirm the separation: the RTX 5080 SUPER sits at the 19th percentile among all GPUs, while the L20 reaches the 99th percentile.

The L20 is the clear choice for compute-heavy workloads. Its average benchmark score is roughly 81.7 times higher than the RTX 5080 SUPER's result, and its nearest rivals include the NVIDIA L40 and RTX 6000 Ada Generation, both of which it trails by single-digit percentages. The RTX 5080 SUPER, by contrast, competes with the Quadro P1000 and Intel Arc Pro B60, cards from a much lower performance tier.

The RTX 5080 SUPER serves a different purpose. It carries the GeForce 50-series branding, uses the Blackwell 2.0 architecture, and posts a 19th percentile rank, which indicates it is a mid-range consumer-oriented product. Its 24 GB memory capacity and 1.02 TB/s bandwidth make it suitable for gaming and desktop rendering tasks, but the data does not place it in the same league as the L20 for raw compute throughput.

Users who need massive memory capacity and top-tier compute scores should select the L20. Users who prioritize a newer architectural generation, a higher base clock, and a consumer display output set should consider the RTX 5080 SUPER. The data shows no overlap in their performance envelopes.

Architecture Differences

The two cards come from different NVIDIA architecture families. The RTX 5080 SUPER uses the GB203 chip built on Blackwell 2.0, manufactured on a 5 nm process at TSMC. The L20 uses the AD102 chip built on Ada Lovelace, also on a 5 nm process at TSMC. Both share the same process node, but their chip designs diverge significantly.

Transistor counts reveal the L20's larger silicon. The L20 packs 76,300 million transistors on a 609 mm² die, while the RTX 5080 SUPER contains 45,600 million transistors on a 378 mm² die. Transistor density is close: the L20 achieves 125.3M per mm², the RTX 5080 SUPER achieves 120.6M per mm². The L20's advantage comes from sheer die size, not density.

Memory architecture differs completely. The RTX 5080 SUPER uses 24 GB of GDDR7 on a 256-bit bus, yielding 1.02 TB/s bandwidth. The L20 doubles capacity to 48 GB of GDDR6 on a 384-bit bus, but bandwidth drops to 864.0 GB/s. The L20 trades raw bandwidth for capacity, which suits large model loading. Memory clocks also differ: the RTX 5080 SUPER runs at 2000 MHz with 32 Gbps effective, the L20 at 2250 MHz with 18 Gbps effective.

Compute resources favor the L20 across every unit count. The L20 has 11,776 shading units, 368 TMUs, 128 ROPs, 92 RT cores, and 368 tensor cores. The RTX 5080 SUPER has 10,752 shading units, 336 TMUs, 112 ROPs, 84 RT cores, and 336 tensor cores. The L20 leads by roughly 9.5% in shading units, 9.5% in TMUs, 14.3% in ROPs, 9.5% in RT cores, and 9.5% in tensor cores.

Clock speeds tell a different story. The RTX 5080 SUPER has a base clock of 2295 MHz and a boost of 2617 MHz. The L20 starts lower at 1440 MHz base but boosts to 2520 MHz. The RTX 5080 SUPER holds a 32.9% higher base clock, but the boost gap narrows to 3.8%.

Interface and output differences matter for deployment. The RTX 5080 SUPER uses PCIe 5.0 x16, while the L20 uses PCIe 4.0 x16. Display outputs diverge: the RTX 5080 SUPER offers 1x HDMI 2.1b and 3x DisplayPort 2.1b, the L20 offers 4x DisplayPort 1.4a. The L20's suggested PSU is 600 W, and its TDP is 275 W. The RTX 5080 SUPER's TDP is 415 W with no suggested PSU listed.

Where Each One Wins

The L20 wins decisively in raw compute benchmarks. Its Geekbench OpenCL score is 274276 and its Vulkan score is 228018, averaging to 251147. The RTX 5080 SUPER's single 3DMark Steel Nomad DX12 score of 3075 does not approach this magnitude. The L20's 99th percentile ranking places it among the top GPUs in the database, while the RTX 5080 SUPER's 19th percentile places it near the lower quarter of all recorded cards.

The L20 also wins on memory capacity. Its 48 GB GDDR6 configuration doubles the RTX 5080 SUPER's 24 GB, which supports larger datasets and bigger model footprints. Its wider 384-bit bus and higher ROP count (128 vs 112) contribute to a pixel rate of 322.6 GPixel/s, ahead of the RTX 5080 SUPER's 293.1 GPixel/s. Texture rate also favors the L20: 927.4 GTexel/s vs 879.3 GTexel/s. FP32 and FP16 throughput both reach 59.35 TFLOPS on the L20, versus 56.28 TFLOPS on the RTX 5080 SUPER.

The RTX 5080 SUPER wins on architectural recency. Its Blackwell 2.0 architecture and GeForce 50-series generation postdate the L20's Ada Lovelace and Server Ada generation. Its release date of 2025-12-31 comes after the L20's 2023-11-15. The RTX 5080 SUPER also wins on bandwidth: 1.02 TB/s exceeds the L20's 864.0 GB/s by 18.1%, which benefits memory-bound gaming workloads.

The RTX 5080 SUPER offers a higher base clock (2295 MHz vs 1440 MHz) and a slightly higher boost clock (2617 MHz vs 2520 MHz). Its PCIe 5.0 interface doubles the L20's PCIe 4.0 bandwidth potential. Its display outputs support newer standards: HDMI 2.1b and DisplayPort 2.1b versus the L20's DisplayPort 1.4a only.

Power efficiency favors the L20. It draws 275 W TDP versus the RTX 5080 SUPER's 415 W, a 33.7% reduction, while delivering higher compute throughput. The L20's physical dimensions are also smaller: 267 mm length and 111 mm height versus 304 mm and 137 mm for the RTX 5080 SUPER. Both are dual-slot cards with a single 16-pin power connector.

FAQ

Q: Which card has the higher average benchmark score?

A: The L20 averages 251147 points across Geekbench OpenCL and Vulkan tests. The RTX 5080 SUPER scores 3075 on 3DMark Steel Nomad DX12.

Q: How much memory does each card offer?

A: The RTX 5080 SUPER has 24 GB of GDDR7 on a 256-bit bus with 1.02 TB/s bandwidth. The L20 has 48 GB of GDDR6 on a 384-bit bus with 864.0 GB/s bandwidth.

Q: What are the nearest rivals for each card according to the database?

A: The RTX 5080 SUPER's nearest rivals include the Quadro P1000 (2.8% higher score), Intel Arc Pro B60 (3.4% higher), GeForce 820A (3.1% lower), and GeForce GTX 860M (3.6% lower). The L20's nearest rivals include the PG506-232 (11.6% lower), Radeon PRO W7900D (14.2% lower), L40 (11.6% higher), and RTX 6000 Ada Generation (12.6% higher).

Q: Which card has a higher TDP?

A: The RTX 5080 SUPER has a TDP of 415 W. The L20 has a TDP of 275 W. The L20 also lists a suggested PSU of 600 W, while the RTX 5080 SUPER does not list one.

Q: Do both cards use the same process node?

A: Yes, both use a 5 nm process at TSMC. However, the L20's AD102 die is 609 mm² with 76,300 million transistors, while the RTX 5080 SUPER's GB203 die is 378 mm² with 45,600 million transistors.

Q: What display outputs does each card provide?

A: The RTX 5080 SUPER provides 1x HDMI 2.1b and 3x DisplayPort 2.1b. The L20 provides 4x DisplayPort 1.4a.

Head-to-Head Benchmarks

Direct head-to-head benchmark results are not recorded in the database, so the comparison relies on each card's individual test scores and nearest-rival deltas.

The L20's Geekbench OpenCL score of 274276 represents its strongest recorded result. Its Vulkan score of 228018 is 16.9% lower than the OpenCL figure, indicating the card performs better under compute-oriented APIs than graphics-oriented ones. The L20's average of 251147 places it 11.6% above the PG506-232 and 14.2% above the Radeon PRO W7900D, while sitting 11.6% below the L40 and 12.6% below the RTX 6000 Ada Generation.

The RTX 5080 SUPER's 3DMark Steel Nomad DX12 score of 3075 places it 2.8% below the Quadro P1000 and 3.4% below the Intel Arc Pro B60. It sits 3.1% above the GeForce 820A and 3.6% above the GeForce GTX 860M. The tight delta range, from 3.6% below to 3.6% above, indicates the RTX 5080 SUPER clusters closely with its nearest competitors in this specific benchmark.

Cross-card comparison shows the L20's average score exceeds the RTX 5080 SUPER's score by a factor of approximately 81.7. The L20's lowest recorded score, 228018 in Vulkan, still dwarfs the RTX 5080 SUPER's 3075. No benchmark in the database shows the RTX 5080 SUPER approaching the L20's performance tier.

The L20's percentile ranking of 99 versus the RTX 5080 SUPER's 19 underscores the gap. The nearest-rival data confirms the L20 competes with workstation-class cards like the L40 and RTX 6000 Ada Generation, while the RTX 5080 SUPER competes with entry-level mobile and workstation GPUs.

Specification Differences

The two cards differ across nearly every recorded specification except process node, foundry, API support, and slot width.

Chip and architecture: RTX 5080 SUPER uses GB203 with Blackwell 2.0. L20 uses AD102 with Ada Lovelace. The L20's generation is "Server Ada (Lxx)", the RTX 5080 SUPER's is "GeForce 50".

Transistors and die: L20 has 76,300 million transistors on 609 mm². RTX 5080 SUPER has 45,600 million on 378 mm². Transistor density is 125.3M per mm² for the L20, 120.6M per mm² for the RTX 5080 SUPER.

Clocks: RTX 5080 SUPER base is 2295 MHz, boost is 2617 MHz, memory is 2000 MHz with 32 Gbps effective. L20 base is 1440 MHz, boost is 2520 MHz, memory is 2250 MHz with 18 Gbps effective.

Memory: RTX 5080 SUPER has 24 GB GDDR7, 256-bit bus, 1.02 TB/s bandwidth. L20 has 48 GB GDDR6, 384-bit bus, 864.0 GB/s bandwidth.

Compute units: RTX 5080 SUPER: 10752 shading units, 336 TMUs, 112 ROPs, 84 RT cores, 336 tensor cores. L20: 11776 shading units, 368 TMUs, 128 ROPs, 92 RT cores, 368 tensor cores.

Rates: RTX 5080 SUPER: 293.1 GPixel/s pixel rate, 879.3 GTexel/s texture rate, 56.28 TFLOPS FP32 and FP16. L20: 322.6 GPixel/s, 927.4 GTexel/s, 59.35 TFLOPS FP32 and FP16.

Power: RTX 5080 SUPER TDP is 415 W. L20 TDP is 275 W with a suggested PSU of 600 W. Both use a single 16-pin connector and dual-slot cooling.

Bus and outputs: RTX 5080 SUPER uses PCIe 5.0 x16, outputs 1x HDMI 2.1b and 3x DisplayPort 2.1b. L20 uses PCIe 4.0 x16, outputs 4x DisplayPort 1.4a.

Dimensions: RTX 5080 SUPER is 304 mm long, 137 mm high, 40 mm wide. L20 is 267 mm long, 111 mm high, with no width recorded.

Release and status: RTX 5080 SUPER released 2025-12-31 with a launch MSRP of 999 USD. L20 released 2023-11-15 with no launch MSRP recorded. Both are Active in production. The L20 lists its predecessor as Server Ampere and successor as Server Hopper; the RTX 5080 SUPER lists neither.