GPU Comparison

The NVIDIA GeForce RTX 5080 is the clear performance winner over the RTX 4080, taking 9 of 10 head-to-head benchmarks. The decisive margin comes in the modern DirectX 12 workload, where the RTX 5080 scores 8,637 versus 6,567, a 31.5% advantage. The overall average benchmark score also favors the newer card: 56,083 versus 54,247. However, the RTX 4080 retains one notable victory in Vulkan compute, and the gap in legacy DirectX tests is far narrower than the flagship 3DMark result suggests.

Head-to-Head Benchmarks

The RTX 5080 dominates in the most demanding test. In 3DMark Steel Nomad DX12, it posts 8,637 points against the RTX 4080’s 6,567, a 31.5% delta. This is the single largest difference between the two cards, and it signals that the RTX 5080 scales significantly better under heavy next-generation geometry and ray-tracing loads. No other benchmark comes close to this margin.

Compute performance also favors the RTX 5080, though less dramatically. In Geekbench OpenCL, the RTX 5080 scores 235,901 versus 214,739, a 9.9% lead. The PassMark GPU Compute test shows a smaller 5.4% advantage (21,789 vs 20,671). These results indicate that the RTX 5080’s added shading units and tensor cores translate into measurable throughput gains, but not the generational leap seen in the DX12 test.

The RTX 5080 also wins in every PassMark DirectX iteration. The DirectX 12 score is 151 versus 132, a 14.4% improvement. DirectX 11 shows 324 vs 314, a 3.2% gain. DirectX 10 is nearly tied at 208 vs 204 (2.0%), and DirectX 9 yields 389 vs 370 (5.1%). The pattern suggests the RTX 5080 gains more ground as the API becomes more modern, which aligns with its architecture’s focus on parallel workload efficiency.

The RTX 4080’s only win comes in Geekbench Vulkan. It scores 263,779 versus the RTX 5080’s 255,450, a 3.2% margin. This is a meaningful result for Vulkan-based workloads, but it is an outlier in an otherwise consistent sweep. The RTX 5080 still wins the 3DMark Steel Nomad test, which is also GPU-bound, so the Vulkan result appears specific to that API’s scheduling on the older architecture rather than a general compute advantage.

In rasterization-oriented tests, the RTX 5080 leads by moderate margins. PassMark G3D shows 36,565 vs 34,457, a 6.1% gain. PassMark G2D is 1,415 vs 1,239, a 14.2% advantage. The G2D result is surprising given that both cards use a 256-bit memory bus, but the RTX 5080’s higher memory clock and bandwidth likely contribute. Across all ten benchmarks, the RTX 5080’s average score of 56,083 sits 3.4% above the RTX 4080’s 54,247, confirming a consistent, if sometimes modest, superiority.

Where Each One Wins

The RTX 5080 wins everywhere except Vulkan compute. Its largest wins are in DX12 (31.5%), DX12 PassMark (14.4%), and G2D (14.2%). These are the tests that benefit most from higher shader counts, faster memory bandwidth, and improved geometry processing. The 31.5% Steel Nomad lead is particularly important because that benchmark is designed to stress modern gaming workloads, making it the most relevant indicator for upcoming titles.

The RTX 4080’s Vulkan win is narrow but real. A 3.2% edge in Geekbench Vulkan suggests that for Vulkan-based applications, the older card can still hold its own. This is likely due to the RTX 4080’s driver maturity and its slightly different compute unit organization. However, this single victory does not offset the RTX 5080’s wins in OpenCL (9.9%) or any of the DirectX tests.

For legacy API performance, the cards are nearly identical. DirectX 10 scores differ by only 2.0%, and DirectX 11 by 3.2%. This means users running older games will not notice a meaningful difference. The RTX 5080’s advantage grows with API complexity: it is 5.1% faster in DirectX 9, 14.4% faster in DirectX 12, and 31.5% faster in the 3DMark DX12 stress test. The data clearly shows the RTX 5080 is built for future workloads, not just current ones.

In compute-heavy tasks, the RTX 5080 leads in OpenCL and PassMark Compute, but the margins are moderate. The 9.9% OpenCL lead is the second-largest win for the RTX 5080, indicating that its extra 1,024 shading units (10,752 vs 9,728) provide a real throughput benefit. The 5.4% PassMark Compute lead is smaller, suggesting that some compute workloads are memory-bound rather than shader-bound, which would explain why the RTX 4080’s lower bandwidth (716.8 GB/s vs 960.0 GB/s) does not hurt it more.

Architecture Differences

The two cards represent different architectural generations. The RTX 5080 uses the GB203 chip on the Blackwell 2.0 architecture, while the RTX 4080 uses the AD103 chip on Ada Lovelace. Both are built on the same 5 nm process at TSMC, and transistor counts are nearly identical: 45,600 million for the RTX 5080 and 45,900 million for the RTX 4080. Die sizes are also close at 378 mm² and 379 mm² respectively. The architectural efficiency gains in Blackwell must therefore come from design changes rather than process improvements.

The RTX 5080 has more execution resources across the board. It features 10,752 shading units versus 9,728, 336 TMUs versus 304, and 84 RT cores versus 76. Tensor core counts are 336 versus 304. The RTX 4080 matches the RTX 5080 in ROPs at 112, so pixel output is similar. The RTX 5080’s boost clock is 2617 MHz versus 2505 MHz, and its base clock is 2295 MHz versus 2205 MHz. These higher clocks, combined with more shaders, produce the 56.28 TFLOPS FP32 rate versus 48.74 TFLOPS.

Memory is a major differentiator. The RTX 5080 uses GDDR7 at 1875 MHz (30 Gbps effective) to achieve 960.0 GB/s bandwidth. The RTX 4080 uses GDDR6X at 1400 MHz (22.4 Gbps effective) for 716.8 GB/s. Both have 16 GB capacity on a 256-bit bus, but the RTX 5080’s bandwidth is 34% higher. This directly explains its superior performance in bandwidth-sensitive tests like 3DMark Steel Nomad and PassMark G2D.

The cards also differ in connectivity and power specifications. The RTX 5080 uses PCIe 5.0 x16, while the RTX 4080 uses PCIe 4.0 x16. Display outputs differ: the RTX 5080 has 1x HDMI 2.1b and 3x DisplayPort 2.1b, while the RTX 4080 has 1x HDMI 2.1 and 3x DisplayPort 1.4a. The RTX 5080 has a 360 W TDP versus 320 W for the RTX 4080, and it recommends a 750 W PSU versus 700 W. The RTX 5080 is also physically slimmer at dual-slot versus triple-slot, though it is shorter (304 mm vs 310 mm) and narrower (137 mm vs 140 mm).

FAQ

Q: Which card is faster in DirectX 12 gaming?

A: The RTX 5080 is significantly faster. In 3DMark Steel Nomad DX12, it scores 8,637 versus 6,567, a 31.5% lead. In PassMark DirectX 12, it scores 151 versus 132, a 14.4% lead.

Q: Does the RTX 4080 win any benchmark?

A: Yes, the RTX 4080 wins Geekbench Vulkan with a score of 263,779 versus 255,450, a 3.2% margin. It loses the other nine head-to-head tests.

Q: How do the memory systems compare?

A: Both cards have 16 GB and a 256-bit bus. The RTX 5080 uses GDDR7 at 960.0 GB/s, while the RTX 4080 uses GDDR6X at 716.8 GB/s. The RTX 5080’s bandwidth is 34% higher.

Q: What is the average benchmark score difference?

A: The RTX 5080 has an average score of 56,083, while the RTX 4080 averages 54,247. The RTX 5080 is 3.4% higher on average.

Q: Are the cards built on the same process node?

A: Yes, both use a 5 nm process at TSMC. Transistor counts are nearly identical: 45,600 million for the RTX 5080 and 45,900 million for the RTX 4080.

Q: Which card has a higher boost clock?

A: The RTX 5080 has a boost clock of 2617 MHz, while the RTX 4080 boosts to 2505 MHz. The RTX 5080 also has a higher base clock at 2295 MHz versus 2205 MHz.

The Verdict

The RTX 5080 is the superior card for nearly all workloads. It wins 9 of 10 benchmarks, with the largest margin in the most demanding test (31.5% in 3DMark Steel Nomad DX12). Its 56.28 TFLOPS FP32 performance, 960.0 GB/s bandwidth, and 10,752 shading units give it a clear edge in modern gaming and compute. The RTX 4080’s only win in Geekbench Vulkan is not enough to recommend it for general use.

For gamers, the RTX 5080 is the obvious choice. The 31.5% lead in DX12 Steel Nomad suggests it will handle future titles with significantly more headroom. The 14.4% lead in PassMark DirectX 12 and 9.9% lead in OpenCL further cement its position. The RTX 4080 remains competitive in legacy DirectX 10 (2.0% difference) and Vulkan, but these are niche scenarios.

For compute users, the RTX 5080 also leads, but less decisively. OpenCL performance is 9.9% higher, and PassMark GPU Compute is 5.4% higher. The RTX 4080’s Vulkan advantage may appeal to developers targeting that API, but the broader compute picture favors the RTX 5080. The RTX 5080’s higher TDP of 360 W versus 320 W is a consideration, but it comes with more performance.

The RTX 4080’s end-of-life status and the RTX 5080’s active status reinforce the recommendation. The RTX 5080 is the newer, faster, and more future-proof option. Its launch MSRP is 999 USD. The RTX 4080 launched at 1,199 USD. The data shows the RTX 5080 delivers more performance at a lower launch price. For anyone choosing between these two, the RTX 5080 is the pick unless Vulkan-specific workloads are the sole priority.

Specification Differences

| Specification | RTX 5080 | RTX 4080 |

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

| Chip | GB203 | AD103 |

| Architecture | Blackwell 2.0 | Ada Lovelace |

| Transistors | 45,600 million | 45,900 million |

| Die Size | 378 mm² | 379 mm² |

| Base Clock | 2295 MHz | 2205 MHz |

| Boost Clock | 2617 MHz | 2505 MHz |

| Memory Type | GDDR7 | GDDR6X |

| Memory Clock | 1875 MHz (30 Gbps) | 1400 MHz (22.4 Gbps) |

| Bandwidth | 960.0 GB/s | 716.8 GB/s |

| Shading Units | 10752 | 9728 |

| TMUs | 336 | 304 |

| RT Cores | 84 | 76 |

| Tensor Cores | 336 | 304 |

| FP32 | 56.28 TFLOPS | 48.74 TFLOPS |

| Pixel Rate | 293.1 GPixel/s | 280.6 GPixel/s |

| Texture Rate | 879.3 GTexel/s | 761.5 GTexel/s |

| TDP | 360 W | 320 W |

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

| Suggested PSU | 750 W | 700 W |

| Bus Interface | PCIe 5.0 x16 | PCIe 4.0 x16 |

| Display Outputs | 1x HDMI 2.1b, 3x DP 2.1b | 1x HDMI 2.1, 3x DP 1.4a |

| Length | 304 mm | 310 mm |

| Height | 137 mm | 140 mm |

| Width | 40 mm | 61 mm |

| Production Status | Active | End-of-life |

| Release Date | 2025-01-29 | 2022-09-19 |

| Launch MSRP | 999 USD | 1,199 USD |

| Avg Benchmark Score | 56083 | 54247 |

| Percentile | 87 | 86 |