NVIDIA GeForce RTX 4080 vs NVIDIA RTX A6000 Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive sweep: the GeForce RTX 4080 wins all nine head-to-head comparisons against the RTX A6000. The largest margin comes in the Vulkan test, where the 4080 scores 263,779 versus 164,462, a 60.4% advantage. That is not a small gap; it is a generational leap in API efficiency. DirectX 11 shows a similar story with a 64.4% lead (314 versus 191), and DirectX 12 follows at 51.7% (132 versus 87). Even legacy DirectX 9 workloads favor the 4080 by 51% (370 versus 245).

The 3D rendering-focused Passmark G3D score reinforces the pattern: 34,457 for the 4080 against 22,577 for the A6000, a 52.6% difference. Compute workloads also favor the consumer card, with Passmark GPU Compute showing 20,671 versus 14,110, a 46.5% edge. OpenCL performance is closer but still clearly in the 4080’s favor at 10.7% (214,739 versus 193,937). Even the 2D test, Passmark G2D, shows a 35.7% lead (1,239 versus 913). The smallest relative win is OpenCL, yet it is still a double-digit margin. The RTX A6000 never takes a single benchmark, making the comparison one-sided in raw performance terms.

Architecture Differences

These two cards come from different generations and foundries. The RTX 4080 uses the AD103 chip on TSMC’s 5 nm process, packing 45,900 million transistors into a 379 mm² die. That works out to a transistor density of 121.1 million per square millimeter. The RTX A6000 is built on the older GA102 chip, manufactured by Samsung on an 8 nm node, with 28,300 million transistors spread across a much larger 628 mm² die. Its density is 45.1 million per square millimeter. The process advantage is stark: the 4080 crams nearly three times the transistors into roughly 60% of the silicon area.

The clocks reflect that architectural gap. The 4080 runs at a 2205 MHz base and 2505 MHz boost, while the A6000 sits at 1410 MHz base and 1800 MHz boost. Higher clocks plus a newer architecture explain why the 4080 achieves 48.74 TFLOPS FP32 against the A6000’s 38.71 TFLOPS, despite having fewer shading units (9,728 versus 10,752). The A6000 does have more texture mapping units (336 versus 304) and more RT cores (84 versus 76), but the 4080’s clock advantage overcomes that. The 4080 also has 304 tensor cores versus 336 on the A6000, yet the newer tensor core design in Ada Lovelace delivers higher throughput per core.

Memory is where the A6000 pushes back. The RTX A6000 carries 48 GB of GDDR6 on a 384-bit bus, giving it 768.0 GB/s of bandwidth. The 4080 has 16 GB of GDDR6X on a 256-bit bus, with 716.8 GB/s of bandwidth. The memory amounts are completely different classes: 48 GB versus 16 GB is a 3x capacity difference. The A6000’s memory clock is 2000 MHz (16 Gbps effective), while the 4080 runs at 1400 MHz but with 22.4 Gbps effective throughput, which is why bandwidth stays close despite the narrower bus. Pixel rate favors the 4080 at 280.6 GPixel/s versus 201.6 GPixel/s, and texture rate does the same at 761.5 GTexel/s versus 604.8 GTexel/s.

Physical design differs too. The RTX 4080 is a triple-slot card, 310 mm long, 140 mm tall, and 61 mm wide, using a single 16-pin power connector. The A6000 is a dual-slot card at 267 mm long and 112 mm tall, using an 8-pin EPS connector. Both have a 700 W suggested PSU and both draw similar power in the database: 320 W for the 4080, 300 W for the A6000. Display outputs are also different: the 4080 offers one HDMI 2.1 and three DisplayPort 1.4a, while the A6000 provides four DisplayPort 1.4a with no HDMI. Both support PCIe 4.0 x16 and the same API set: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Where Each One Wins

The benchmark data is unambiguous: the RTX 4080 wins every workload category recorded. For gaming and real-time rendering, the 4080 is the clear pick. DirectX 11 and DirectX 12 leads of 64.4% and 51.7% respectively show that modern game engines will run substantially faster on the consumer card. Vulkan performance, critical for many cross-platform titles and emulators, is 60.4% ahead. Even if you do not care about ray tracing, the raw rasterization advantage in Passmark G3D (52.6%) means frame rates will be much higher in most titles.

Compute workloads also favor the 4080. Passmark GPU Compute shows a 46.5% lead, and OpenCL is 10.7% ahead. That covers general-purpose tasks like video encoding, physics simulations, and some machine learning inference. The 4080’s higher FP32 throughput (48.74 TFLOPS versus 38.71 TFLOPS) supports this result.

The RTX A6000, despite losing every benchmark, has one clear advantage: memory capacity. With 48 GB versus 16 GB, it can hold far larger datasets in VRAM. This matters for workloads that exceed 16 GB, such as training large neural networks, rendering massive 3D scenes, or processing high-resolution medical and scientific imagery. The A6000 also wins on physical footprint: dual-slot versus triple-slot, and shorter at 267 mm versus 310 mm. For dense workstation builds with multiple GPUs, that form factor is valuable. The A6000’s four DisplayPort outputs also support multi-monitor setups without needing adapters, while the 4080 gives you one HDMI and three DisplayPorts.

FAQ

Q: Which card is faster in DirectX 12?

A: The RTX 4080. Its Passmark DirectX 12 score is 132 versus 87 for the A6000, a 51.7% advantage.

Q: Does the RTX A6000 win any benchmarks?

A: No. In all nine head-to-head tests, the RTX 4080 scores higher. The closest result is OpenCL, where the 4080 leads by 10.7%.

Q: How much more memory does the RTX A6000 have?

A: The A6000 has 48 GB of GDDR6, which is three times the 16 GB found on the RTX 4080. The A6000 also has a wider 384-bit bus versus 256-bit, though the 4080’s GDDR6X memory runs at a higher effective speed.

Q: What is the power draw difference?

A: The RTX 4080 is rated at 320 W, and the RTX A6000 is rated at 300 W. Both cards recommend a 700 W power supply.

Q: Which card has better compute performance?

A: The RTX 4080. It scores 20,671 in Passmark GPU Compute versus 14,110 for the A6000, a 46.5% lead. Its FP32 throughput is 48.74 TFLOPS compared to 38.71 TFLOPS.

Q: Can the A6000 fit in smaller cases?

A: Yes. The A6000 is a dual-slot card at 267 mm long and 112 mm tall. The RTX 4080 is triple-slot, 310 mm long, and 140 mm tall.

The Verdict

The data supports a simple conclusion for most users: the RTX 4080 is the faster card in every measured metric. If your work or play relies on frame rates, rendering speed, or general compute, the 4080 delivers 46% to 64% better performance in most tests. It is also built on a newer 5 nm process with much higher transistor density, which explains its efficiency at similar power draw. The 4080 sits at the 86th percentile among all GPUs in the database, while the A6000 is at the 84th percentile, so both are top-tier, but the 4080 is clearly ahead.

The RTX A6000 is the right choice only when 16 GB of VRAM is not enough. The 48 GB capacity is a hard requirement for certain professional workloads, and no amount of extra speed can substitute for memory that is simply not there. The A6000 also earns its place in multi-GPU workstations because of its dual-slot design and shorter length, making it easier to pack several cards into a chassis. Its 8-pin EPS power connector is also more common in server and workstation power supplies than the 16-pin connector on the 4080.

For a single-GPU build focused on gaming or general 3D work, the RTX 4080 is the obvious pick. For a workstation where VRAM capacity is the bottleneck, the A6000 is the only one of these two that can handle the workload. The launch MSRP for the RTX 4080 is 1,199 USD, and for the RTX A6000 it is 4,649 USD. That price gap is substantial, but the database does not track value, only performance and capacity. The benchmarks say the 4080 is faster; the specs say the A6000 can hold more data. Choose based on which constraint matters more.

Specification Differences

| Specification | NVIDIA GeForce RTX 4080 | NVIDIA RTX A6000 |

|---|---|---|

| Architecture | Ada Lovelace | Ampere |

| Process Node | 5 nm (TSMC) | 8 nm (Samsung) |

| Transistors | 45,900 million | 28,300 million |

| Die Size | 379 mm² | 628 mm² |

| Transistor Density | 121.1M / mm² | 45.1M / mm² |

| Base Clock | 2205 MHz | 1410 MHz |

| Boost Clock | 2505 MHz | 1800 MHz |

| Memory Size | 16 GB | 48 GB |

| Memory Type | GDDR6X | GDDR6 |

| Memory Bus Width | 256 bit | 384 bit |

| Memory Bandwidth | 716.8 GB/s | 768.0 GB/s |

| Effective Memory Speed | 22.4 Gbps | 16 Gbps |

| Shading Units | 9728 | 10752 |

| TMUs | 304 | 336 |

| ROPs | 112 | 112 |

| RT Cores | 76 | 84 |

| Tensor Cores | 304 | 336 |

| FP32 Performance | 48.74 TFLOPS | 38.71 TFLOPS |

| Pixel Rate | 280.6 GPixel/s | 201.6 GPixel/s |

| Texture Rate | 761.5 GTexel/s | 604.8 GTexel/s |

| TDP | 320 W | 300 W |

| Slot Width | Triple-slot | Dual-slot |

| Power Connectors | 1x 16-pin | 8-pin EPS |

| Length | 310 mm | 267 mm |

| Height | 140 mm | 112 mm |

| Display Outputs | 1x HDMI 2.1, 3x DisplayPort 1.4a | 4x DisplayPort 1.4a |

| Release Date | 2022-09-19 | 2020-10-04 |