NVIDIA GeForce RTX 5070 Mobile 12 GB vs NVIDIA H20 Comparison

Head-to-Head Benchmarks

The recorded data contains no direct head-to-head benchmark results for the NVIDIA GeForce RTX 5070 Mobile 12 GB and the NVIDIA H20. Both entries show zero benchmark entries, zero average benchmark scores, and zero wins in the comparison table. This absence of measured performance data means the comparison must rely entirely on the architectural specifications and theoretical throughput figures present in the database.

The RTX 5070 Mobile delivers 13.13 TFLOPS of FP32 compute, while the H20 reaches 39.54 TFLOPS in the same precision. That is a 3.01x advantage for the H20 in raw single-precision throughput. In FP16, the gap widens dramatically: the H20 outputs 79.07 TFLOPS with a 2:1 ratio, whereas the RTX 5070 Mobile manages 13.13 TFLOPS with a 1:1 ratio. The H20 therefore provides 6.02x the FP16 throughput of the mobile part. Texture rate tells a similar story, with the H20 at 617.8 GTexel/s versus 205.2 GTexel/s for the RTX 5070 Mobile, a 3.01x difference.

However, the RTX 5070 Mobile wins in pixel throughput. Its 68.40 GPixel/s exceeds the H20's 47.52 GPixel/s by 1.44x. This is notable because the H20 has far more shading units (9984 versus 4608) and TMUs (312 versus 144), yet its ROP count is only 24 compared to 48 on the mobile chip. The RTX 5070 Mobile also carries 36 dedicated RT cores, while the H20 lists no RT core count at all, indicating the server part is not designed for real-time ray tracing workloads.

Memory bandwidth is another decisive separation point. The H20's HBM3 memory subsystem provides 4.03 TB/s across a 6144-bit bus, which is 7.0x the 576.0 GB/s available on the RTX 5070 Mobile's GDDR7 memory over a 192-bit interface. The H20 also has 96 GB of memory versus 12 GB, an 8x capacity advantage. Clock speeds favor the server chip as well: the H20 boosts to 1980 MHz, while the RTX 5070 Mobile boosts to 1425 MHz, a 555 MHz difference.

FAQ

Q: Which GPU has higher FP32 compute throughput?

A: The NVIDIA H20 delivers 39.54 TFLOPS of FP32, which is 3.01x the 13.13 TFLOPS of the RTX 5070 Mobile.

Q: How do the memory subsystems compare?

A: The H20 uses 96 GB of HBM3 with a 6144-bit bus and 4.03 TB/s bandwidth. The RTX 5070 Mobile uses 12 GB of GDDR7 with a 192-bit bus and 576.0 GB/s. The H20 has 7.0x the bandwidth and 8x the capacity.

Q: Does the RTX 5070 Mobile support ray tracing?

A: Yes, the RTX 5070 Mobile includes 36 RT cores. The H20 does not list any RT core count in the database, suggesting it is not configured for ray tracing workloads.

Q: Which GPU has higher pixel fill rate?

A: The RTX 5070 Mobile achieves 68.40 GPixel/s, which is 1.44x the H20's 47.52 GPixel/s, despite the H20 having more shading units and TMUs.

Q: What are the thermal design power ratings?

A: The RTX 5070 Mobile is rated at 50 W, while the H20 is rated at 500 W, a 10x difference. The H20 also suggests a 900 W power supply, whereas the mobile part lists no PSU requirement.

Q: Which GPU has higher texture throughput?

A: The H20 delivers 617.8 GTexel/s, which is 3.01x the 205.2 GTexel/s of the RTX 5070 Mobile.

Where Each One Wins

The H20 dominates in compute-heavy workloads. Its FP32 and FP16 figures, 39.54 TFLOPS and 79.07 TFLOPS respectively, place it firmly in the server acceleration category. The FP16 2:1 ratio indicates the H20 is optimized for mixed-precision AI training and inference, where tensor core utilization matters more than pixel pushing. The 312 tensor cores and 4.03 TB/s memory bandwidth reinforce this positioning. The 96 GB HBM3 capacity allows large model residency without constant host-device transfers. The H20's texture rate of 617.8 GTexel/s also suggests it can handle data-intensive operations beyond pure matrix math.

The RTX 5070 Mobile wins in client-side rendering scenarios. The 48 ROPs and 68.40 GPixel/s pixel fill rate exceed the H20's 24 ROPs and 47.52 GPixel/s, making the mobile part better suited for rasterization-heavy graphics. The presence of 36 RT cores gives it real-time ray tracing capability, which the H20 lacks. The 50 W TDP means it can operate in thin-and-light portable devices, whereas the H20 requires a server chassis with substantial cooling and power delivery. The 12 GB GDDR7 memory, while smaller, is sufficient for typical gaming and workstation graphics workloads at standard resolutions.

The PCIe 5.0 x16 interface appears on both parts, so connectivity is not a differentiator. The RTX 5070 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the H20 lists N/A for all three APIs, confirming the server GPU is not intended for graphics API workloads.

Specification Differences

The database records substantial differences across nearly every specification field. The process node is identical at 5 nm from TSMC, but the die sizes diverge sharply: the H20's GH100 chip measures 814 mm², while the RTX 5070 Mobile's GB206 is 181 mm². Transistor counts follow suit, with the H20 at 80,000 million and the RTX 5070 Mobile at 21,900 million. Transistor density favors the mobile chip at 121.0M per mm² versus 98.3M per mm² for the H20.

Base clocks differ by 923 MHz in favor of the H20 (1830 MHz versus 907 MHz). Boost clocks show a 555 MHz gap (1980 MHz versus 1425 MHz). Memory clock rates are recorded differently: the H20 runs at 1313 MHz with 5.3 Gbps effective, while the RTX 5070 Mobile runs at 1500 MHz with 24 Gbps effective. The effective GDDR7 data rate is 4.5x higher than the HBM3 effective rate, though the H20's much wider bus compensates in total bandwidth.

Shading units: 9984 on the H20 versus 4608 on the RTX 5070 Mobile. TMUs: 312 versus 144. ROPs: 24 versus 48. Tensor cores: 312 versus 144. RT cores: none listed on the H20 versus 36 on the RTX 5070 Mobile. Thermal design power: 500 W versus 50 W. The H20 is an SXM Module with a suggested 900 W PSU, while the RTX 5070 Mobile is an IGP (integrated graphics processor) with no power connectors. Display outputs are absent on the H20, while the RTX 5070 Mobile lists them as portable device dependent.

Release dates show the H20 arriving on 2024-01-31, with the RTX 5070 Mobile dated 2026-05-31, a gap of over two years. The H20's predecessor is Server Ada and its successor is Server Blackwell. The RTX 5070 Mobile's predecessor is GeForce 40 Mobile.

Architecture Differences

The two GPUs belong to entirely different architectural families. The RTX 5070 Mobile uses Blackwell 2.0 architecture on the GB206 chip, part of the GeForce 50-series and the GeForce 50 Mobile generation. The H20 uses Hopper architecture on the GH100 chip, part of the Server Hopper (Hxx) generation. Blackwell 2.0 is NVIDIA's consumer-oriented architecture focused on real-time graphics and ray tracing, while Hopper is a data center architecture optimized for AI acceleration and high-throughput compute.

The memory technologies reflect these divergent purposes. GDDR7 on a 192-bit bus gives the RTX 5070 Mobile 576.0 GB/s, sufficient for graphics frame buffers. HBM3 on a 6144-bit bus gives the H20 4.03 TB/s, necessary for feeding 9984 shading units and 312 tensor cores. The H20's 96 GB capacity allows large model weights and massive data sets to reside on-chip.

The FP16 ratio difference is architecturally significant. The H20's 2:1 FP16 to FP32 ratio (79.07 TFLOPS versus 39.54 TFLOPS) indicates dedicated tensor core paths that double throughput in lower precision. The RTX 5070 Mobile's 1:1 ratio (13.13 TFLOPS in both) means its tensor cores do not provide the same precision scaling, reflecting a design where FP32 and FP16 share execution resources without a dedicated acceleration path.

Transistor density also differs: 121.0M per mm² on the RTX 5070 Mobile versus 98.3M per mm² on the H20. This suggests the GB206 die packs transistors more tightly, likely due to its smaller 181 mm² area and simpler memory controller requirements. The GH100's 814 mm² die has more total transistors but lower density, consistent with large HBM3 stacks and a wider memory interface consuming die area.

API support is a clear architectural differentiator. The RTX 5070 Mobile lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H20 lists N/A for all three, confirming that Hopper does not expose graphics APIs. The RT core count of 36 on the mobile part versus none on the H20 further cements the architectural split: Blackwell 2.0 includes dedicated ray tracing hardware, Hopper omits it entirely.

The Verdict

The data indicates two GPUs engineered for opposite ends of the computing spectrum. The NVIDIA H20 is a server accelerator with 3.01x the FP32 throughput, 6.02x the FP16 throughput, 7.0x the memory bandwidth, and 8x the memory capacity of the RTX 5070 Mobile. Its 500 W TDP, SXM Module form factor, and absence of display outputs or graphics APIs position it exclusively for data center compute, particularly AI training and inference workloads that benefit from the 2:1 FP16 ratio and 312 tensor cores.

The NVIDIA GeForce RTX 5070 Mobile 12 GB is a client GPU built for portable systems. Its 50 W TDP allows integration as an IGP with no power connectors. It delivers 68.40 GPixel/s, 1.44x the pixel fill rate of the H20, and includes 36 RT cores for real-time ray tracing. Its API support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, along with display outputs dependent on the portable device, confirm its role in gaming laptops and mobile workstations.

Benchmark results show no measured performance data for either part, so the comparison rests on theoretical specifications. The RTX 5070 Mobile wins in pixel throughput, ROP count, transistor density, and power efficiency (13.13 TFLOPS at 50 W versus 39.54 TFLOPS at 500 W, a 2.13x efficiency advantage in FP32 per watt). The H20 wins in raw compute, memory bandwidth, memory capacity, shading units, TMUs, tensor cores, and clock speeds.

The release timeline also matters: the H20 launched in January 2024, while the RTX 5070 Mobile arrives in May 2026. The H20's successor is already listed as Server Blackwell, indicating the Hopper generation is being superseded. The RTX 5070 Mobile's predecessor is GeForce 40 Mobile, placing it as the latest in the mobile consumer line. Users seeking a server GPU for AI compute should look to the H20's specifications. Users needing a mobile graphics solution with ray tracing and graphics API support should look to the RTX 5070 Mobile. The data does not support any other conclusion.