AMD Radeon 880M vs NVIDIA GeForce RTX 3080 Comparison

The Verdict

The benchmark data positions the NVIDIA GeForce RTX 3080 and AMD Radeon 880M as near-identical in aggregate performance, with the RTX 3080 holding a razor-thin 0.4% average score advantage (35,787 vs. 35,646). Both sit at the 80th and 79th percentiles of all GPUs respectively, placing them in the same performance tier despite radically different designs. The RTX 3080 is the clear choice for discrete desktop workloads where raw compute throughput and dedicated memory bandwidth matter, while the 880M represents an integrated solution that achieves comparable average scores through a completely different architectural approach at a fraction of the power envelope. The data shows no scenario where the 880M wins a head-to-head benchmark; the RTX 3080 dominates both shared tests, but the 880M's existence as an active-generation IGP with system-shared memory makes it the logical pick for portable devices where the RTX 3080's 320 W TDP and dual-slot footprint are simply not viable.

Where Each One Wins

The RTX 3080 wins decisively in every measured benchmark category. In Geekbench OpenCL, the RTX 3080 scores 167,014 against the 880M's 31,285, a 433.8% advantage. In Geekbench Vulkan, the RTX 3080 scores 145,176 against 40,006, a 262.9% lead. These are not marginal victories; they represent fundamental differences in compute capability. The RTX 3080's 29.77 TFLOPS FP32 throughput versus the 880M's 4.454 TFLOPS explains the scale of these deltas. The 880M's wins are not in raw performance but in efficiency and integration: its 15 W TDP versus 320 W, its 4 nm process versus 8 nm, and its system-shared memory architecture that eliminates dedicated VRAM requirements. The 880M is also an active product with a 2024 release date, while the RTX 3080 is end-of-life with a 2020 launch. For sustained compute workloads, the RTX 3080's 760.3 GB/s memory bandwidth versus the 880M's system-dependent bandwidth gives it an insurmountable edge. The 880M's advantage lies in being the only option for ultra-thin, fanless designs where the RTX 3080's 285 mm length and 1x 12-pin power connector are disqualifying.

Architecture Differences

The architectural chasm between these two GPUs is substantial. The RTX 3080 uses the GA102 chip on an 8 nm Samsung process, packing 28,300 million transistors across a 628 mm² die at a density of 45.1M transistors per mm². The 880M uses the Strix Point chip on a 4 nm TSMC process, with 34,000 million transistors on a 233 mm² die at 145.9M per mm² — a density advantage of roughly 3.2x. The RTX 3080 is built on the Ampere architecture from the GeForce 30 generation, featuring 8,704 shading units, 272 TMUs, 96 ROPs, 68 RT cores, and 272 tensor cores. The 880M uses RDNA 3.5 from the Navi III IGP generation, with just 768 shading units, 48 TMUs, 16 ROPs, 12 RT cores, and no tensor cores. Clock speeds invert the core count disparity: the RTX 3080 runs at 1440 MHz base and 1710 MHz boost, while the 880M runs at 400 MHz base but 2900 MHz boost — a 1.7x higher peak frequency. Memory configurations could not differ more: the RTX 3080 has 10 GB of GDDR6X on a 320-bit bus delivering 760.3 GB/s, while the 880M uses system-shared memory with system-dependent bandwidth. The RTX 3080's FP32 performance of 29.77 TFLOPS is 6.7x the 880M's 4.454 TFLOPS, though the 880M's FP16 of 8.909 TFLOPS (2:1 rate) shows a different compute ratio than the RTX 3080's 1:1 FP16/FP32 at 29.77 TFLOPS. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RTX 3080 uses PCIe 4.0 x16, the 880M uses PCIe 4.0 x8. The RTX 3080 is dual-slot with a 1x 12-pin connector and 700 W suggested PSU; the 880M is an IGP with no power connectors.

FAQ

Q: Which GPU has higher raw compute throughput?

A: The RTX 3080 delivers 29.77 TFLOPS FP32 and 29.77 TFLOPS FP16 (1:1), versus the 880M's 4.454 TFLOPS FP32 and 8.909 TFLOPS FP16 (2:1). The RTX 3080's FP32 output is 6.7x higher.

Q: How do their average benchmark scores compare?

A: The RTX 3080 has an average benchmark score of 35,787, while the 880M scores 35,646. The RTX 3080 is 0.4% ahead, and both GPUs sit at the 80th and 79th percentiles of all GPUs, respectively.

Q: What are the key memory differences?

A: The RTX 3080 has 10 GB of GDDR6X on a 320-bit bus with 760.3 GB/s bandwidth. The 880M uses system-shared memory with system-dependent bandwidth and no dedicated VRAM.

Q: Which GPU is more power-efficient?

A: The 880M has a 15 W TDP versus the RTX 3080's 320 W, and uses a 4 nm TSMC process versus 8 nm Samsung. The 880M requires no power connectors, while the RTX 3080 needs a 1x 12-pin connector and 700 W PSU.

Q: What is the production status of each?

A: The RTX 3080 is end-of-life, released on 2020-08-31 with a 699 USD launch MSRP. The 880M is active, released on 2024-07-14 with no launch MSRP listed.

Q: Do they support the same graphics APIs?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, though the RTX 3080 also has 272 tensor cores while the 880M has none.

Head-to-Head Benchmarks

The head-to-head data contains only two shared benchmarks, and the RTX 3080 wins both by overwhelming margins. In Geekbench OpenCL, the RTX 3080 scores 167,014 against the 880M's 31,285, a delta of 433.8%. This is not a close contest; the RTX 3080's dedicated GDDR6X memory and 8,704 shading units dwarf the 880M's 768 shading units and system-shared memory. The OpenCL test heavily favors discrete GPUs with high bandwidth and parallel execution resources, and the numbers reflect that: the RTX 3080's 760.3 GB/s versus the 880M's system-dependent bandwidth creates a fundamental throughput gap. In Geekbench Vulkan, the RTX 3080 scores 145,176 against 40,006, a 262.9% lead. The narrower delta in Vulkan compared to OpenCL suggests the 880M's RDNA 3.5 architecture handles Vulkan's lower-level API more efficiently relative to its hardware resources, but the absolute scores still place the RTX 3080 far ahead. The RTX 3080's 68 RT cores and 272 tensor cores provide hardware acceleration that the 880M's 12 RT cores and absent tensor cores cannot match. The 880M's 2900 MHz boost clock does help it narrow the gap in Vulkan — its 46.40 GPixel/s pixel rate and 139.2 GTexel/s texture rate, while far below the RTX 3080's 164.2 GPixel/s and 465.1 GTexel/s, still represent a capable integrated solution. The win count is 2-0 in favor of the RTX 3080, and the average score delta of 0.4% masks the true magnitude of these benchmark-specific disparities. The RTX 3080's nearest rivals include the AMD Radeon Pro Duo at 35,860 (-0.2%) and the RTX 5070 Ti Mobile at 35,435 (+1%), while the 880M's nearest rivals include the RTX 5070 Ti Mobile at 35,435 (+0.6%) and the AMD Radeon RX 6750 XT at 35,327 (+0.9%). These rival scores confirm both GPUs occupy a tight performance band, but the head-to-head tests show the RTX 3080's strengths are concentrated in exactly the workloads where the 880M is weakest. The 880M's 4.454 TFLOPS FP32 and 8.909 TFLOPS FP16 show a compute profile designed for efficiency rather than brute force, while the RTX 3080's 29.77 TFLOPS in both FP32 and FP16 indicates balanced, high-throughput execution. For any user requiring maximum compute density, the RTX 3080 is the data-backed choice; for integrated mobile use, the 880M's 15 W power draw and system-shared memory make it the only feasible option in this comparison.