NVIDIA L4 vs NVIDIA RTX 6000D Comparison

The NVIDIA RTX 6000D is the clear performance leader, delivering a 175.8% higher Geekbench OpenCL score than the NVIDIA L4, and it holds a 98th percentile rank versus the L4’s 95th percentile. The RTX 6000D is the choice for compute-heavy, high-memory workstation tasks, while the L4’s 72 W power draw and single-slot form factor make it the pick for dense, power-constrained server deployments where raw throughput is secondary.

The Verdict

The benchmark data is unambiguous: the RTX 6000D is in a different performance class. Its average benchmark score of 195,964 is 49.5% higher than the L4’s 131,072. In the head-to-head Geekbench OpenCL test, the RTX 6000D scores 388,405 versus 140,838 for the L4, a 175.8% advantage. This is not a marginal win; it is a dominant one.

For professionals running GPU-accelerated rendering, simulation, or AI inference with large models, the RTX 6000D is the only viable option of the two. Its 84 GB of GDDR7 memory and 1.40 TB/s bandwidth dwarf the L4’s 24 GB GDDR6 and 300.1 GB/s. The RTX 6000D also leads in every compute metric: 97.04 TFLOPS FP32 versus 30.29 TFLOPS, 19,968 shading units versus 7,424, and 624 tensor cores versus 240. The data says this is a workstation-class card.

The L4 is not without purpose. Its 72 W TDP requires no power connector and only a 250 W suggested PSU, versus 600 W and a 1x 16-pin connector for the RTX 6000D. It is single-slot and 169 mm long, fitting where the RTX 6000D’s dual-slot, 304 mm frame will not. The L4’s avgScore of 131,072 places it within 0.7% of the GeForce RTX 3090 Ti, so it is not slow—it is simply outclassed by the RTX 6000D.

Choose the RTX 6000D for maximum compute and memory capacity. Choose the L4 for low-power, low-profile server inference or virtual desktop workloads where space and heat are the limiting factors. The performance gap is so large that the L4 is only justifiable when the RTX 6000D physically or electrically cannot be used.

FAQ

Q: How much faster is the RTX 6000D than the L4 in the available benchmark?

A: In the Geekbench OpenCL test, the RTX 6000D scores 388,405 against the L4’s 140,838, a 175.8% higher result.

Q: What is the memory capacity difference?

A: The RTX 6000D has 84 GB of GDDR7 on a 448-bit bus, while the L4 has 24 GB of GDDR6 on a 192-bit bus. Bandwidth is 1.40 TB/s versus 300.1 GB/s.

Q: Which card has better percentile ranking among all GPUs?

A: The RTX 6000D ranks in the 98th percentile, while the L4 ranks in the 95th percentile.

Q: What are the power requirements for each card?

A: The RTX 6000D has a 600 W TDP with a 1x 16-pin connector and a 1000 W suggested PSU. The L4 has a 72 W TDP, no power connector, and a 250 W suggested PSU.

Q: Do both cards support the same graphics APIs?

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

Q: What are the physical size differences?

A: The RTX 6000D is dual-slot, 304 mm long, 137 mm high, and 40 mm wide. The L4 is single-slot, 169 mm long, and 56 mm high.

Architecture Differences

The two cards come from different NVIDIA architectures and process nodes, though both are fabricated on TSMC’s 5 nm node. The RTX 6000D uses the GB202 chip under the Blackwell 2.0 architecture, belonging to the Blackwell PRO W (x000) generation. The L4 uses the AD104 chip under the older Ada Lovelace architecture, part of the Server Ada (Lxx) generation.

The chip scales differ dramatically. The RTX 6000D’s GB202 die measures 750 mm² and contains 92,200 million transistors, yielding a density of 122.9 million per mm². The L4’s AD104 die is 294 mm² with 35,800 million transistors, at a density of 121.8 million per mm². The transistor density is nearly identical, but the RTX 6000D has 2.6 times the die area and 2.6 times the transistor count.

Both architectures share the same API feature sets—DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4—but the internal resources differ. The RTX 6000D has 156 RT cores and 624 tensor cores, while the L4 has 60 RT cores and 240 tensor cores. The RTX 6000D’s shading unit count of 19,968 is 2.7 times the L4’s 7,424, and its 624 TMUs compare to 240. The ROP count is 192 versus 80.

The memory subsystems are entirely different generations. The RTX 6000D uses GDDR7 at 25 Gbps effective, while the L4 uses GDDR6 at 12.5 Gbps effective. This, combined with the wider 448-bit bus versus 192-bit, accounts for the massive bandwidth gap. The RTX 6000D is a newer, larger, and more powerful implementation of NVIDIA’s compute and rendering technology.

Specification Differences

The two cards differ across nearly every major specification field except the 5 nm process node, TSMC foundry, and the three graphics APIs.

• Architecture: Blackwell 2.0 (GB202) vs Ada Lovelace (AD104)
• Transistors: 92,200 million vs 35,800 million
• Die Size: 750 mm² vs 294 mm²
• Base Clock: 1992 MHz vs 795 MHz
• Boost Clock: 2430 MHz vs 2040 MHz
• Memory: 84 GB GDDR7 vs 24 GB GDDR6
• Memory Bus: 448 bit vs 192 bit
• Memory Bandwidth: 1.40 TB/s vs 300.1 GB/s
• Shading Units: 19,968 vs 7,424
• TMUs: 624 vs 240
• ROPs: 192 vs 80
• RT Cores: 156 vs 60
• Tensor Cores: 624 vs 240
• Pixel Rate: 466.6 GPixel/s vs 163.2 GPixel/s
• Texture Rate: 1,516.3 GTexel/s vs 489.6 GTexel/s
• FP32 / FP16: 97.04 TFLOPS vs 30.29 TFLOPS
• TDP: 600 W vs 72 W
• Slot Width: Dual-slot vs Single-slot
• Power Connectors: 1x 16-pin vs None
• Suggested PSU: 1000 W vs 250 W
• Bus Interface: PCIe 5.0 x16 vs PCIe 4.0 x16
• Display Outputs: 4x DisplayPort 2.1b vs No outputs
• Dimensions: 304 x 137 x 40 mm vs 169 x 56 mm
• Release Date: 2025-07-13 vs 2023-03-20
• Predecessor: Workstation Ada vs Server Ampere
• Successor: None vs Server Hopper
• Launch MSRP: 8,565 USD vs None

The L4 has no display outputs, making it a pure compute or server card. The RTX 6000D includes 4x DisplayPort 2.1b, so it can drive displays directly.

Head-to-Head Benchmarks

The only shared benchmark in the data is Geekbench OpenCL, and the result is decisive. The RTX 6000D scores 388,405, which is 175.8% higher than the L4’s 140,838. This means for every 1 point the L4 scores, the RTX 6000D scores 2.758 points. It is a blowout.

The L4’s other benchmark, Geekbench Vulkan, scores 121,306, but there is no corresponding Vulkan result for the RTX 6000D in the data for a direct comparison. However, the OpenCL result alone tells the story. The RTX 6000D’s average benchmark score of 195,964 is 49.5% above the L4’s 131,072, confirming that the single head-to-head test is representative of the overall gap.

Looking at nearest rivals for context: the RTX 6000D’s avgScore of 195,964 puts it 0.8% ahead of the Tesla V100S PCIe 32 GB (194,415), 4.7% ahead of the A100 SXM4 40 GB (187,147), and 6.1% ahead of the RTX 5000 Ada Generation (184,664). It trails the A100 PCIe 80 GB (207,124) by 5.4%. The L4’s avgScore of 131,072 sits just 0.7% below the GeForce RTX 3090 Ti (131,938) and 3.1% below the RTX 4000 Ada Generation (135,218) and A10M (135,230). The RTX 6000D competes with the previous generation’s top accelerators, while the L4 competes with mid-range cards from two generations ago.

In terms of raw FP32 compute, the RTX 6000D’s 97.04 TFLOPS is 3.2 times the L4’s 30.29 TFLOPS. The pixel rate is 466.6 GPixel/s versus 163.2 GPixel/s, and the texture rate is 1,516.3 GTexel/s versus 489.6 GTexel/s. Every measurable compute metric favors the RTX 6000D by a factor of roughly 3.

Where Each One Wins

The RTX 6000D wins in every performance category measured. It wins the sole head-to-head benchmark by 175.8%. It has 3.2 times the FP32 throughput, 3.5 times the memory capacity, and 4.7 times the memory bandwidth. It is the superior choice for any workload that stresses the GPU: large-scale 3D rendering, physics simulation, training or inference on large AI models, and high-resolution video processing. The 84 GB memory pool allows datasets to reside entirely on the GPU, avoiding PCIe transfers that would bottleneck the L4’s 24 GB capacity. Its 4x DisplayPort 2.1b outputs also make it suitable for interactive visualization workstations.

The L4 wins in the physical and power domains. Its 72 W TDP means it can be deployed in servers without additional power cabling, and its single-slot, 169 mm length fits in dense chassis where the RTX 6000D’s dual-slot, 304 mm length will not. The L4’s 250 W suggested PSU versus 1000 W for the RTX 6000D means an entire system can run on a fraction of the power budget of a single RTX 6000D. For inference workloads that fit within 24 GB and do not require maximum throughput, the L4 allows far more GPUs per server, increasing aggregate throughput in a fixed power envelope. Its PCIe 4.0 x16 interface, though a generation older, is sufficient for its bandwidth.

The verdict is binary: choose the RTX 6000D if you need maximum performance and memory, and accept its 600 W power draw and dual-slot footprint. Choose the L4 if you need to maximize GPU density per watt and per rack unit, and your workloads fit within 24 GB of memory. The data does not support any other conclusion.