NVIDIA GeForce RTX 4080 Mobile vs NVIDIA H20 Comparison

Head-to-Head Benchmarks

The recorded data shows no direct head-to-head benchmark results between the NVIDIA GeForce RTX 4080 Mobile and the NVIDIA H20. The database contains no shared test scores, no comparative workloads, and no average score for the H20. The RTX 4080 Mobile holds an average benchmark score of 38,135 across its nine recorded tests, while the H20 has an average benchmark score of 0, indicating that no benchmark data has been captured for the server GPU.

The RTX 4080 Mobile's percentile ranking against all GPUs stands at 81, placing it in the upper tier of recorded graphics processors. The H20's percentile ranking is 50, but this figure derives from an absence of measured performance, not from a median result. Without shared tests, a direct performance comparison cannot be established from the available measurements.

The RTX 4080 Mobile does have a set of nearest rivals in the database, which provides context for its standing. The NVIDIA GeForce MX570 scores 38,299, which is 0.4% higher than the RTX 4080 Mobile. The NVIDIA GeForce RTX 5080 Mobile scores 38,349, 0.6% higher. The NVIDIA GeForce RTX 4070 scores 37,648, which is 1.3% lower. The NVIDIA Tesla P4 scores 37,628, also 1.3% lower. These deltas are narrow, indicating that the RTX 4080 Mobile sits within a tight performance cluster in the database's aggregate scoring.

The H20 has no nearest rivals listed and no benchmark entries. Its role in the database is defined entirely by its specifications, not by measured results. The absence of data means any statement about its real-world performance relative to the RTX 4080 Mobile would be speculative. The database records no wins for either GPU in a head-to-head context, as no such tests exist.

The Verdict

The data indicates that the RTX 4080 Mobile is a measured, active mobile graphics processor with a full set of benchmark results, while the H20 is a server accelerator with no recorded performance metrics. For users comparing these two, the RTX 4080 Mobile offers documented performance across OpenCL, Vulkan, and multiple Passmark tests. The H20 offers no such documentation in the database.

From the recorded specifications alone, the H20 targets a different segment entirely. It uses 500 W of power, requires a 900 W suggested PSU, and comes as an SXM Module with no display outputs. The RTX 4080 Mobile uses 110 W, has no power connectors, and is an integrated graphics package (IGP) with portable device dependent outputs. The H20 is not designed for client workloads that require rendering to a screen; the RTX 4080 Mobile is.

The RTX 4080 Mobile should be selected for scenarios that need a mobile GPU with confirmed compute and graphics performance, as evidenced by its 81st percentile ranking and its 159,575 Geekbench OpenCL score. The H20 should be selected for server deployments where massive memory capacity and high FP16 throughput matter, based on its 96 GB HBM3 memory and 79.07 TFLOPS FP16 rating. Neither device substitutes for the other in the database's recorded data.

FAQ

Q: Does the NVIDIA H20 have any benchmark scores in the database?

A: No. The H20 has an empty benchmarks array, an average benchmark score of 0, and no nearest rivals. The RTX 4080 Mobile has nine recorded scores, including 159,575 in Geekbench OpenCL and 145,807 in Geekbench Vulkan.

Q: Which GPU has a higher FP32 throughput?

A: The H20 has a higher FP32 rating at 39.54 TFLOPS, compared to the RTX 4080 Mobile's 24.72 TFLOPS. The H20 also reaches 79.07 TFLOPS in FP16 (2:1 ratio), while the RTX 4080 Mobile delivers 24.72 TFLOPS in FP16 (1:1 ratio).

Q: How much memory does each GPU carry, and what type?

A: The RTX 4080 Mobile has 12 GB of GDDR6 memory on a 192-bit bus with 432.0 GB/s bandwidth. The H20 has 96 GB of HBM3 memory on a 6144-bit bus with 4.03 TB/s bandwidth.

Q: What are the power requirements for each?

A: The RTX 4080 Mobile has a 110 W TDP, no power connectors, and an IGP slot width. The H20 has a 500 W TDP, a 900 W suggested PSU, and an SXM Module slot width.

Q: Which GPU has more shading units and tensor cores?

A: The H20 has 9,984 shading units and 312 tensor cores. The RTX 4080 Mobile has 7,424 shading units and 232 tensor cores. The H20 also has 312 TMUs, while the RTX 4080 Mobile has 232 TMUs.

Q: What is the RTX 4080 Mobile's standing among all GPUs?

A: It ranks in the 81st percentile among all GPUs, with an average benchmark score of 38,135. Its nearest rival, the RTX 5080 Mobile, scores 38,349, which is 0.6% higher.

Specification Differences

The two GPUs differ in nearly every recorded specification. The RTX 4080 Mobile uses the AD104 chip, while the H20 uses the GH100 chip. The RTX 4080 Mobile has a die size of 294 mm², versus 814 mm² for the H20. Transistor counts diverge sharply: 35,800 million for the RTX 4080 Mobile, 80,000 million for the H20. Transistor density is 121.8M per mm² for the RTX 4080 Mobile, and 98.3M per mm² for the H20.

Clock speeds vary. The RTX 4080 Mobile runs at a base of 1290 MHz and a boost of 1665 MHz. The H20 runs at a base of 1830 MHz and a boost of 1980 MHz. Memory clocks also differ: the RTX 4080 Mobile uses 2250 MHz with 18 Gbps effective, while the H20 uses 1313 MHz with 5.3 Gbps effective.

Memory configurations are distinct. The RTX 4080 Mobile has 12 GB GDDR6, a 192-bit bus, and 432.0 GB/s bandwidth. The H20 has 96 GB HBM3, a 6144-bit bus, and 4.03 TB/s bandwidth.

Rasterization rates differ. The RTX 4080 Mobile achieves 133.2 GPixel/s pixel rate and 386.3 GTexel/s texture rate. The H20 achieves 47.52 GPixel/s and 617.8 GTexel/s. The RTX 4080 Mobile has 80 ROPs, while the H20 has 24 ROPs. The RTX 4080 Mobile has 58 ray tracing cores; the H20 has no recorded ray tracing cores.

Power and physical specifications diverge. The RTX 4080 Mobile uses 110 W, has no power connectors, and is an IGP. The H20 uses 500 W, has a 900 W suggested PSU, and is an SXM Module. The RTX 4080 Mobile uses PCIe 4.0 x16; the H20 uses PCIe 5.0 x16. The RTX 4080 Mobile has portable device dependent display outputs; the H20 has no outputs.

Bus interface and API support differ. The H20 lists DirectX, OpenGL, and Vulkan as N/A. The RTX 4080 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Architecture Differences

The RTX 4080 Mobile belongs to the Ada Lovelace architecture, part of the GeForce 40 Mobile generation. The H20 belongs to the Hopper architecture, part of the Server Hopper (Hxx) generation. Both use a 5 nm process node from TSMC, but the underlying design goals differ fundamentally.

The RTX 4080 Mobile's Ada Lovelace architecture emphasizes client graphics with 58 ray tracing cores, 232 tensor cores, and a 1:1 FP16 to FP32 ratio. Its 24.72 TFLOPS FP16 equals its FP32 output, indicating that tensor and compute work scales equally with traditional shading. The presence of ray tracing cores and a full DirectX 12 Ultimate feature set positions it for gaming and graphics workloads.

The H20's Hopper architecture prioritizes server compute, particularly FP16 throughput. It delivers 79.07 TFLOPS FP16 with a 2:1 ratio, meaning its FP16 output is double its FP32 output. This design favors AI inference and training workloads that rely on reduced-precision arithmetic. The H20 has no ray tracing cores, no display outputs, and no graphics API support, confirming its compute-only role.

The transistor counts reflect the architectural scale. The H20 packs 80,000 million transistors into 814 mm², yielding a density of 98.3M per mm². The RTX 4080 Mobile packs 35,800 million transistors into 294 mm², yielding a higher density of 121.8M per mm². The higher density suggests a more compact design for mobile integration, while the H20's larger die accommodates its massive HBM3 memory interface.

The memory architecture also reflects divergent goals. The RTX 4080 Mobile uses GDDR6 with a 192-bit bus, prioritizing lower power and mobile compatibility. The H20 uses HBM3 with a 6144-bit bus, achieving 4.03 TB/s bandwidth, roughly 9.3 times the RTX 4080 Mobile's 432.0 GB/s. This bandwidth advantage aligns with server workloads that move large data sets.

The release timeline shows the RTX 4080 Mobile launched first, with a release date of 2023-01-02, while the H20 launched on 2024-01-31. The RTX 4080 Mobile's predecessor is GeForce 30 Mobile and its successor is GeForce 50 Mobile. The H20's predecessor is Server Ada and its successor is Server Blackwell. Both are marked as Active in production status.