NVIDIA GeForce RTX 5080 Mobile vs NVIDIA H20 NVL16 Comparison

FAQ

Q: How do the recorded benchmark scores for the NVIDIA GeForce RTX 5080 Mobile compare to its nearest rivals in the database?

A: The RTX 5080 Mobile has an average benchmark score of 38,349. It sits within a very tight cluster of rivals: it is 0.1% ahead of the NVIDIA GeForce MX570 (38,299), 0.6% ahead of the NVIDIA GeForce RTX 4080 Mobile (38,135), and 0.9% behind both the NVIDIA GeForce MX570 A (38,691) and the AMD Radeon Pro 580X (38,706). The performance deltas are minimal, all under 1%.

Q: What is the percentile ranking of the RTX 5080 Mobile versus all GPUs in the database?

A: The RTX 5080 Mobile holds an 81st percentile ranking among all recorded GPUs. In contrast, the NVIDIA H20 NVL16 holds a 50th percentile ranking, though the H20 has no recorded benchmark entries in the database.

Q: What is the memory bandwidth difference between the two GPUs?

A: The RTX 5080 Mobile delivers 896.0 GB/s of bandwidth from 16 GB of GDDR7 memory on a 256-bit bus. The H20 NVL16 delivers 4.03 TB/s of bandwidth from 96 GB of HBM3 memory on a 6144-bit bus, which is substantially higher.

Q: What are the FP32 and FP16 compute figures for each GPU?

A: The RTX 5080 Mobile produces 23.04 TFLOPS of FP32 and 23.04 TFLOPS of FP16 (1:1 ratio). The H20 NVL16 produces 39.54 TFLOPS of FP32 and 79.07 TFLOPS of FP16 (2:1 ratio), meaning the H20 has a much larger FP16 advantage due to its ratio.

Q: What are the power requirements for each GPU?

A: The RTX 5080 Mobile has a TDP of 80 W and uses no external power connectors, fitting an IGP slot width. The H20 NVL16 has a TDP of 400 W, uses an SXM module slot width, and has a suggested PSU of 800 W.

Q: What is the transistor count and die size difference?

A: The RTX 5080 Mobile uses the GB203 chip with 45,600 million transistors on a 378 mm² die. The H20 NVL16 uses the GH100 chip with 80,000 million transistors on an 814 mm² die. The H20 has a lower transistor density at 98.3M / mm² compared to 120.6M / mm² for the RTX 5080 Mobile.

The Verdict

The data presents two fundamentally different products with almost no overlap in intended use. The RTX 5080 Mobile is a mobile graphics solution with a complete API stack (DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4), display outputs that are portable device dependent, and an 80 W power envelope. Its benchmark presence is confirmed with ten recorded tests and an 81st percentile ranking. The H20 NVL16 is a server accelerator with no display outputs, no API support listed (DirectX, OpenGL, Vulkan all N/A), and a 400 W power draw.

For clients seeking a mobile GPU with graphics API compatibility and a compact IGP form factor, the RTX 5080 Mobile is the only viable option between these two. The H20 NVL16 cannot output video or run standard graphics APIs, so it is unsuitable for any client-facing rendering workload. The H20 NVL16 instead targets compute-heavy server environments where its 79.07 TFLOPS FP16 performance and 4.03 TB/s memory bandwidth are decisive. The RTX 5080 Mobile delivers 23.04 TFLOPS FP32, which is 39% lower than the H20's 39.54 TFLOPS, but it does so at one-fifth the TDP (80 W versus 400 W).

The RTX 5080 Mobile's nearest rival comparisons show it is nearly identical in average score to the RTX 4080 Mobile (0.6% ahead), suggesting generational gains are modest in aggregate benchmarks. The H20 NVL16 has no recorded benchmarks, so direct performance comparisons cannot be made from the database. The H20's percentile of 50 is a placeholder without data. The RTX 5080 Mobile is the clear pick for mobile graphics and gaming workloads, while the H20 NVL16 is the pick for large-memory server compute, though its actual benchmark performance remains unverified in the database.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries between the RTX 5080 Mobile and the H20 NVL16. The wins counters for both items are zero. The H20 NVL16 has no benchmark scores recorded at all, so any direct comparison must rely on the specification-derived metrics available.

The RTX 5080 Mobile's recorded scores across its ten tests show specific strengths. Its highest scores include 27,711 in Passmark G3D, 169,754 in Geekbench Vulkan, 166,986 in Geekbench OpenCL, and 12,134 in Passmark GPU Compute. It also scores 4,952 in 3DMark Steel Nomad DX12. These results confirm it performs in the 81st percentile of all GPUs.

The H20 NVL16 offers no comparable benchmark figures. The absence of data means the database cannot confirm any performance relationship between these two accelerators. What the specifications show is a large compute gap in raw throughput. The H20 NVL16's FP32 output of 39.54 TFLOPS is 71% higher than the RTX 5080 Mobile's 23.04 TFLOPS. The FP16 gap is larger: 79.07 TFLOPS versus 23.04 TFLOPS, a 3.4x advantage for the H20. The H20 also has 4.03 TB/s of memory bandwidth versus 896.0 GB/s, a 4.5x difference.

The RTX 5080 Mobile counters with higher pixel fill rate: 144.0 GPixel/s versus 47.52 GPixel/s, a 3x advantage. It also has 96 ROPs versus 24 ROPs on the H20, which explains the pixel throughput difference. The RTX 5080 Mobile's texture rate is 360.0 GTexel/s versus 617.8 GTexel/s for the H20, meaning the H20 has 71% higher texture throughput.

The RTX 5080 Mobile has 60 RT cores and 240 tensor cores, while the H20 NVL16 has no RT cores listed and 312 tensor cores. The H20's tensor core count is 30% higher, but the RTX 5080 Mobile is the only one with ray tracing hardware. The shading unit counts are 7,680 for the RTX 5080 Mobile and 9,984 for the H20, a 30% difference. The TMU counts are 240 versus 312, also a 30% difference.

Clock speeds favor the H20 substantially: base 1830 MHz versus 975 MHz, boost 1980 MHz versus 1500 MHz. Memory clocks are 1313 MHz (5.3 Gbps effective) for the H20 versus 1750 MHz (28 Gbps effective) for the RTX 5080 Mobile, but the H20's 6144-bit bus makes its effective bandwidth far higher.

Specification Differences

The two GPUs differ across nearly every specification field. The process node is identical at 5 nm from TSMC, but the transistor counts diverge sharply: the RTX 5080 Mobile has 45,600 million transistors on a 378 mm² die, while the H20 NVL16 has 80,000 million transistors on an 814 mm² die. Transistor density is 120.6M / mm² for the RTX 5080 Mobile versus 98.3M / mm² for the H20.

Memory configurations are completely different. The RTX 5080 Mobile uses 16 GB of GDDR7 on a 256-bit bus with 896.0 GB/s bandwidth. The H20 NVL16 uses 96 GB of HBM3 on a 6144-bit bus with 4.03 TB/s bandwidth. Memory type, capacity, bus width, and bandwidth all differ.

Compute resources differ in every category. The RTX 5080 Mobile has 7,680 shading units, 240 TMUs, 96 ROPs, 60 RT cores, and 240 tensor cores. The H20 NVL16 has 9,984 shading units, 312 TMUs, 24 ROPs, no RT cores, and 312 tensor cores. The pixel rate is 144.0 GPixel/s for the RTX 5080 Mobile versus 47.52 GPixel/s for the H20. The texture rate is 360.0 GTexel/s versus 617.8 GTexel/s.

Power and physical specifications are polar opposites. The RTX 5080 Mobile has an 80 W TDP, an IGP slot width, and no power connectors. The H20 NVL16 has a 400 W TDP, an SXM module slot width, and a suggested PSU of 800 W. The RTX 5080 Mobile has display outputs described as portable device dependent, while the H20 NVL16 has no outputs.

API support is exclusive to the RTX 5080 Mobile: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H20 NVL16 lists N/A for all three APIs. The bus interface is PCIe 5.0 x16 for both. The release dates differ: the RTX 5080 Mobile launched on 2025-04-01, and the H20 NVL16 on 2025-09-01. The RTX 5080 Mobile's predecessor is the GeForce 40 Mobile, while the H20 NVL16's predecessor is Server Ada and its successor is Server Blackwell.

Architecture Differences

The RTX 5080 Mobile uses the GB203 chip on the Blackwell 2.0 architecture, part of the GeForce 50-series generation. The H20 NVL16 uses the GH100 chip on the Hopper architecture, part of the Server Hopper (Hxx) generation. These are entirely different architectural lineages from NVIDIA.

The process nodes are the same: both are 5 nm from TSMC. The foundry is TSMC for both. The transistor density differs, with the RTX 5080 Mobile at 120.6M / mm² and the H20 at 98.3M / mm², reflecting the different chip designs. The die sizes are 378 mm² versus 814 mm².

The RTX 5080 Mobile includes 60 RT cores, which are absent from the H20 NVL16. This indicates the RTX 5080 Mobile is designed for ray-traced graphics workloads, while the H20 NVL16 omits this hardware entirely. The tensor core counts are 240 for the RTX 5080 Mobile and 312 for the H20, with the H20 having 30% more tensor cores for AI compute.

The FP16 compute ratio is a key architectural distinction. The RTX 5080 Mobile delivers FP16 at a 1:1 ratio with FP32, both at 23.04 TFLOPS. The H20 NVL16 delivers FP16 at a 2:1 ratio, producing 79.07 TFLOPS versus 39.54 TFLOPS FP32. This means the H20 is optimized for FP16 workloads with double-rate throughput, while the RTX 5080 Mobile treats FP16 and FP32 equally.

The memory architecture reflects the different compute priorities. The H20's HBM3 with a 6144-bit bus and 4.03 TB/s bandwidth is designed for large data sets and memory-bandwidth-intensive server workloads. The GDDR7 on a 256-bit bus in the RTX 5080 Mobile is suited for a mobile graphics context where power and physical constraints dominate. The H20's 96 GB capacity is six times the RTX 5080 Mobile's 16 GB.

The display and API stack differences are architectural too. The RTX 5080 Mobile supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, and has display outputs. The H20 NVL16 has no display outputs and no API support, marking it as a pure compute accelerator. The RTX 5080 Mobile's predecessor is the GeForce 40 Mobile, continuing the GeForce mobile graphics line. The H20 NVL16's predecessor is Server Ada and successor is Server Blackwell, placing it in the server accelerator product cycle.