GPU Comparison

Head-to-Head Benchmarks

The benchmark data records only two shared tests between the NVIDIA RTX A4500 Mobile and the NVIDIA GeForce RTX 4080, and the RTX 4080 wins both outright. In Geekbench OpenCL, the RTX 4080 scores 214739 against the RTX A4500 Mobile's 105307, a lead of 51%. The gap widens dramatically in Geekbench Vulkan, where the RTX A4500 Mobile posts 76960 and the RTX 4080 reaches 263779, a difference of 70.8%. The RTX A4500 Mobile holds no head-to-head wins in the recorded data.

For context, the RTX A4500 Mobile's average benchmark score across its full suite is 91134, placing it in the 93rd percentile among all GPUs in the database. The RTX 4080 counters with an average of 54247 across a far larger benchmark set, yet sits in the 86th percentile. The RTX 4080's nearest rival, the RTX 4080 SUPER, averages 54209, a delta of 0.1% apart, confirming the RTX 4080's position among the top of its own tier.

The RTX 4080's closest rivals cluster within a narrow band: the AMD Radeon Pro W5700X is 1.1% behind at 54828, the AMD Radeon RX 54247 sits 2.6% behind at 54209, and the AMD Radeon 8060S is 2.7% behind at 55757. The RTX A4500 Mobile's rivals, by contrast, show a tighter relative spread around its average: the desktop RTX A4500 averages 91671, only 0.6% behind, while the AMD Radeon Instinct MI60 leads it by 1.4% at 92466. The Quadro GP100 trails by 4.2% at 87445, and the AMD Radeon PRO W7600 trails by 2.4% at 87108.

In raw performance metrics, the RTX 4080's Geekbench Vulkan 70.8% head-to-head margin over the RTX A4500 Mobile far exceeds the 51% spread in Geekbench OpenCL. This pattern suggests Vulkan workloads scale more strongly with the RTX 4080's architecture, delivering over 2.4 times the mobile part's score, while OpenCL favors the RTX 4080 by just over 2 times. The RTX A4500 Mobile's Vulkan score of 76960 is less than a third of the RTX 4080's 263779, a massive absolute difference.

From the recorded data, the RTX 4080's 214739 OpenCL score is 109432 points above the RTX A4500 Mobile's 105307. In Vulkan, the 186819-point gap is even more pronounced. The database shows the RTX A4500 Mobile at 93rd percentile versus the RTX 4080 at 86th, which reflects the mobile part's narrower benchmark set rather than any performance advantage in direct comparison.

The Verdict

The RTX 4080 is the clear winner in every recorded head-to-head test. Its 51% OpenCL advantage and 70.8% Vulkan advantage over the RTX A4500 Mobile leave no ambiguity. The RTX 4080's higher raw scores, including 214739 in OpenCL and 263779 in Vulkan, position it as the stronger GPU for compute-oriented workloads in the database's measurements. The RTX A4500 Mobile's own average benchmark score of 91134 is higher than the RTX 4080's 54247, but this is misleading: the RTX 4080's average includes a far wider range of tests, including lower DirectX and Passmark scores, which drags its overall average down.

Pick the RTX 4080 for peak performance in OpenCL and Vulkan compute, as every direct comparison in the database favors it. Pick the RTX A4500 Mobile only if the 93rd percentile placement and its desktop-class average score across its own suite matter more than direct head-to-head wins. The data shows no test where the RTX A4500 Mobile beats the RTX 4080.

The RTX 4080's nearest rival, the RTX 4080 SUPER, is essentially tied at 0.1% apart, so the RTX 4080 sits at the top of its immediate competition. The RTX A4500 Mobile's nearest rival, the desktop RTX A4500, is only 0.6% ahead, meaning the mobile part competes closely with its desktop counterpart in the database's average scores. That said, the mobile part's 93rd percentile reflects its strong standing among all GPUs, while the RTX 4080's 86th percentile is dragged down by its broader test coverage.

Architecture Differences

The two GPUs come from different architectures and foundries. The RTX A4500 Mobile uses the GA104 chip on the Ampere architecture, built on Samsung's 8 nm process, with 17,400 million transistors on a 392 mm² die. The RTX 4080 uses the AD103 chip on the Ada Lovelace architecture, built on TSMC's 5 nm process, with 45,900 million transistors on a 379 mm² die. Despite the smaller die size, the RTX 4080 packs over 2.6 times the transistors, giving it a transistor density of 121.1 million per mm² versus 44.4 million per mm² for the RTX A4500 Mobile.

The RTX A4500 Mobile belongs to the Ampere-MW generation, with a predecessor of Quadro Turing-M and a successor of Ada-MW. The RTX 4080 belongs to the GeForce 40 generation, with a predecessor of GeForce 30 and a successor of GeForce 50. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

The RTX 4080 uses GDDR6X memory while the RTX A4500 Mobile uses GDDR6, a key architectural differentiator that contributes to its higher memory bandwidth. The RTX 4080 also has more RT cores, 76 versus 46, and more tensor cores, 304 versus 184. These architectural gaps align with the RTX 4080's large compute advantages in the recorded benchmarks.

Specification Differences

The RTX 4080 leads in nearly every specification category. Its base clock is 2205 MHz versus 930 MHz for the RTX A4500 Mobile, and its boost clock is 2505 MHz versus 1500 MHz. The RTX 4080 has 9728 shading units versus 5888, 304 texture mapping units versus 184, and 112 ROPs versus 96. Its FP32 compute is 48.74 TFLOPS, nearly three times the RTX A4500 Mobile's 17.66 TFLOPS, with both offering a 1:1 FP16 ratio at the same figures.

Memory bandwidth favors the RTX 4080 at 716.8 GB/s against 512.0 GB/s, despite both having 16 GB capacity and a 256-bit bus. The RTX 4080's memory runs at 22.4 Gbps effective versus 16 Gbps effective. Pixel rate is 280.6 GPixel/s versus 144.0 GPixel/s, and texture rate is 761.5 GTexel/s versus 276.0 GTexel/s.

Power draw differs substantially: the RTX 4080 has a TDP of 320 W with a suggested PSU of 700 W, while the RTX A4500 Mobile has a TDP of 140 W and no power connectors listed. The RTX 4080 is a triple-slot card with dimensions of 310 mm length, 140 mm height, and 61 mm width, while the RTX A4500 Mobile's dimensions are not recorded. The RTX 4080 has a 16-pin power connector and displays via 1x HDMI 2.1 and 3x DisplayPort 1.4a, while the RTX A4500 Mobile's display outputs are portable device dependent.

Launch dates differ: the RTX A4500 Mobile released on 2022-03-21, six months before the RTX 4080's 2022-09-19. Both are end-of-life. The RTX 4080 has a launch MSRP of 1,199 USD; the RTX A4500 Mobile has no launch MSRP recorded. Both use PCIe 4.0 x16 interfaces.

FAQ

Q: Which GPU wins in Geekbench OpenCL?

A: The RTX 4080 wins with 214739 against 105307 for the RTX A4500 Mobile, a 51% lead.

Q: How large is the Vulkan performance gap between the two?

Q: The RTX 4080 scores 263779 versus 76960 for the RTX A4500 Mobile, a difference of 70.8% in favor of the RTX 4080.

Q: Do both GPUs have the same memory capacity and bus width?

A: Both have 16 GB memory, but the RTX 4080 uses GDDR6X with 716.8 GB/s bandwidth, while the RTX A4500 Mobile uses GDDR6 with 512.0 GB/s bandwidth.

Q: What are the FP32 compute figures for each GPU?

A: The RTX 4080 reaches 48.74 TFLOPS FP32 compute, while the RTX A4500 Mobile achieves 17.66 TFLOPS.

Q: Which GPU has a higher percentile ranking in the database?

A: The RTX A4500 Mobile sits in the 93rd percentile versus the RTX 4080's 86th percentile.

Q: Which GPU has a higher average benchmark score?

A: The RTX A4500 Mobile averages 91134, while the RTX 4080 averages 54247, though the RTX 4080's broader test set lowers its average.

Where Each One Wins

The RTX 4080 wins in every recorded benchmark category shared with the RTX A4500 Mobile. Its 51% OpenCL lead in Geekbench OpenCL and 70.8% in Geekbench Vulkan show dominance across two different GPU compute APIs. The RTX 4080's 716.8 GB/s memory bandwidth, 48.74 TFLOPS FP32 compute, 76 RT cores, and 304 tensor cores give it decisive raw performance advantages over the RTX A4500 Mobile's 512.0 GB/s, 17.66 TFLOPS, 46 RT cores, and 184 tensor cores.

The RTX A4500 Mobile wins in no head-to-head tests in the database, but it does hold a 93rd percentile placement and a 91134 average benchmark score. Its 140 W TDP and lack of dedicated power connectors position it as a lower-power mobile solution, while the RTX 4080's 320 W TDP and 700 W suggested PSU target desktop performance. The RTX A4500 Mobile's 44.4 million transistors per mm² density contrasts with the RTX 4080's 121.1 million per mm², but the mobile part's 392 mm² die is slightly larger than the RTX 4080's 379 mm² die.

For users prioritizing peak compute performance in OpenCL and Vulkan, the RTX 4080 is the unambiguous choice. For users constrained to mobile form factors with lower power draw, the RTX A4500 Mobile offers the 93rd percentile standing and a strong average score relative to its peers, with its nearest rival, the desktop RTX A4500, only 0.6% ahead in average score. The RTX 4080's nearest rival, the RTX 4080 SUPER, is 0.1% apart, underscoring its position at the top of the RTX 4080's immediate performance tier. The data, however, consistently favors the RTX 4080 in every direct comparison recorded in the database.