NVIDIA GeForce RTX 5080 Mobile vs NVIDIA H20 Comparison

Head-to-Head Benchmarks

The database records no direct head-to-head benchmark comparisons between the NVIDIA GeForce RTX 5080 Mobile and the NVIDIA H20. The RTX 5080 Mobile has a substantial set of recorded performance measurements, while the H20 has none in the database. This absence of overlapping data means a direct score-for-score comparison is not possible from the recorded measurements.

The RTX 5080 Mobile posts an average benchmark score of 38,349 across its ten recorded tests. Its percentile ranking against all GPUs is 81, placing it in the upper tier of the database. The H20, by contrast, has a percentile ranking of 50 and an average benchmark score of 0, which reflects the lack of recorded measurements rather than an actual performance assessment.

Looking at the RTX 5080 Mobile's individual results, the strongest showing comes in Geekbench Vulkan with a score of 169,754, followed closely by Geekbench OpenCL at 166,986. The 3DMark Steel Nomad DX12 test returns 4,952. PassMark G3D delivers 27,711, while PassMark GPU Compute reaches 12,134. The DirectX legacy tests are lower: PassMark DirectX 9 scores 314, DirectX 11 scores 253, DirectX 10 scores 171, and DirectX 12 scores 116. The PassMark G2D result is 1,095.

The nearest rival data for the RTX 5080 Mobile provides some context. The GeForce MX570 sits 0.1% ahead with an average score of 38,299, essentially a statistical tie. The RTX 4080 Mobile is 0.6% behind at 38,135. The MX570 A trails by 0.9% at 38,691, and the AMD Radeon Pro 580X also sits 0.9% behind at 38,706. These deltas are all within roughly one percentage point, indicating that the RTX 5080 Mobile's aggregate performance lands in a tightly packed cluster.

Because the H20 has no benchmark entries and no nearest rivals recorded, the database offers no numerical basis for concluding which GPU wins any specific test. The only verifiable statement is that the RTX 5080 Mobile has measurable results and the H20 does not.

Where Each One Wins

The RTX 5080 Mobile wins in every category where data exists, simply because it has recorded results and the H20 has none. The RTX 5080 Mobile shows its highest relative strengths in compute-oriented workloads. The Geekbench OpenCL and Vulkan scores of 166,986 and 169,754 respectively indicate strong general-purpose compute and graphics API performance. The 3DMark Steel Nomad DX12 score of 4,952 demonstrates modern DirectX 12 rendering capability.

The H20 wins no recorded benchmarks. The database lists zero results for it, so no use-case advantage can be quantified. The H20's specification sheet suggests a different purpose: it uses HBM3 memory with 4.03 TB/s bandwidth, 96 GB capacity, and 312 tensor cores, which points toward server-side compute rather than client graphics. But the absence of benchmark data prevents any performance-based conclusion.

The RTX 5080 Mobile's PassMark G3D score of 27,711 and GPU Compute score of 12,134 show a roughly 2.3:1 ratio between graphics and compute throughput. The Geekbench results show a similar pattern, with Vulkan slightly ahead of OpenCL. These measurements indicate a balanced design that handles both rendering and compute workloads, though the database does not include any ray tracing or AI-specific tests.

Architecture Differences

The two GPUs come from different NVIDIA architectures. The RTX 5080 Mobile uses the GB203 chip built on the Blackwell 2.0 architecture. The H20 uses the GH100 chip built on the Hopper architecture. Both use a 5 nm process from TSMC, but the transistor counts differ substantially: the RTX 5080 Mobile packs 45,600 million transistors on a 378 mm² die, while the H20 carries 80,000 million transistors on a 814 mm² die. The transistor density reflects this: the RTX 5080 Mobile achieves 120.6 million transistors per mm², the H20 reaches 98.3 million per mm².

The RTX 5080 Mobile has 7,680 shading units, 240 TMUs, 96 ROPs, 60 RT cores, and 240 tensor cores. The H20 has 9,984 shading units, 312 TMUs, 24 ROPs, no recorded RT core count, and 312 tensor cores. The H20's ROP count of 24 is notably low compared to the RTX 5080 Mobile's 96, which reflects their different design goals: the H20 targets compute throughput, not rasterization.

Clock speeds differ significantly. The RTX 5080 Mobile runs at a base of 975 MHz and a boost of 1500 MHz. The H20 runs at a base of 1830 MHz and a boost of 1980 MHz. Memory configurations are also divergent. The RTX 5080 Mobile uses 16 GB of GDDR7 on a 256-bit bus with 896.0 GB/s bandwidth. The H20 uses 96 GB of HBM3 on a 6144-bit bus with 4.03 TB/s bandwidth. The H20's memory bandwidth is more than four times higher.

The RTX 5080 Mobile delivers 23.04 TFLOPS for both FP32 and FP16, a 1:1 ratio. The H20 delivers 39.54 TFLOPS FP32 and 79.07 TFLOPS FP16, a 2:1 ratio. The H20's FP16 throughput is more than three times the RTX 5080 Mobile's. Pixel rates tell the opposite story: the RTX 5080 Mobile achieves 144.0 GPixel/s, the H20 only 47.52 GPixel/s. Texture rates are 360.0 GTexel/s for the RTX 5080 Mobile and 617.8 GTexel/s for the H20.

Power envelopes are vastly different. The RTX 5080 Mobile is rated at 80 W TDP and uses an IGP slot format with no power connectors. The H20 is rated at 500 W TDP, uses an SXM Module slot format, and requires a suggested PSU of 900 W. The bus interface is the same PCIe 5.0 x16 for both. Display outputs differ: the RTX 5080 Mobile has portable-device-dependent outputs, while the H20 has no outputs at all.

API support also diverges. The RTX 5080 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H20 lists N/A for DirectX, OpenGL, and Vulkan, confirming its non-client orientation. Release dates place the RTX 5080 Mobile at 2025-04-01 and the H20 at 2024-01-31. The RTX 5080 Mobile's predecessor is the GeForce 40 Mobile, while the H20's predecessor is Server Ada and its successor is Server Blackwell.

FAQ

Q: Which GPU has a higher average benchmark score in the database?

A: The RTX 5080 Mobile has an average benchmark score of 38,349, while the H20 has an average benchmark score of 0 because no benchmarks are recorded for it.

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

A: The RTX 5080 Mobile has 896.0 GB/s bandwidth with 16 GB GDDR7 on a 256-bit bus. The H20 has 4.03 TB/s bandwidth with 96 GB HBM3 on a 6144-bit bus.

Q: How do their FP32 compute capabilities compare?

A: The RTX 5080 Mobile delivers 23.04 TFLOPS FP32, while the H20 delivers 39.54 TFLOPS FP32. The H20 is about 72% higher in FP32 throughput.

Q: Do both GPUs support DirectX 12 Ultimate?

A: No. The RTX 5080 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H20 lists N/A for DirectX, OpenGL, and Vulkan.

Q: What are the TDP ratings for each GPU?

A: The RTX 5080 Mobile is rated at 80 W and uses an IGP slot format. The H20 is rated at 500 W and uses an SXM Module slot format with a suggested PSU of 900 W.

Q: Which GPU has more tensor cores?

A: The H20 has 312 tensor cores, while the RTX 5080 Mobile has 240 tensor cores. The H20 also has a higher FP16 throughput of 79.07 TFLOPS versus 23.04 TFLOPS for the RTX 5080 Mobile.

The Verdict

The database provides no benchmark results for the NVIDIA H20. Every recorded performance metric belongs to the RTX 5080 Mobile. The RTX 5080 Mobile's percentile rank of 81 versus the H20's 50 reflects the availability of data more than any performance comparison, but it is the only recorded metric that places both GPUs on the same scale.

The RTX 5080 Mobile is the clear choice for any workload requiring DirectX, OpenGL, or Vulkan support, as the H20 lists N/A for all three APIs. The RTX 5080 Mobile also offers display outputs, while the H20 has none. The RTX 5080 Mobile's 80 W TDP and IGP form factor make it suitable for portable devices, whereas the H20's 500 W TDP and SXM Module format require a server chassis with a 900 W suggested PSU.

The H20's specification sheet shows advantages in memory capacity (96 GB versus 16 GB), memory bandwidth (4.03 TB/s versus 896.0 GB/s), FP32 throughput (39.54 TFLOPS versus 23.04 TFLOPS), and FP16 throughput (79.07 TFLOPS versus 23.04 TFLOPS). These figures indicate a compute-oriented server accelerator, not a client graphics product. The H20's 312 tensor cores and 2:1 FP16 ratio suggest it was designed for AI and high-performance computing workloads, but without benchmark data, the database cannot confirm actual performance in those areas.

Users seeking a mobile GPU with recorded graphics and compute performance should consider the RTX 5080 Mobile. Its nearest rivals cluster within one percentage point, with the MX570 0.1% ahead, the RTX 4080 Mobile 0.6% behind, and both the MX570 A and Radeon Pro 580X at 0.9% behind. The RTX 5080 Mobile sits in a competitive band where aggregate scores are nearly indistinguishable.

Users requiring a server accelerator with massive memory bandwidth and high FP16 throughput would look at the H20 based on its specifications, but the database offers no measured evidence of its performance. The H20's 96 GB HBM3 capacity and 4.03 TB/s bandwidth are the standout recorded specifications. The RTX 5080 Mobile remains the only one of the two with any benchmark scores, and therefore the only one whose performance can be assessed from the recorded data.