AMD Radeon 8065S vs NVIDIA H800 SXM5 Comparison

FAQ

Q: What are the core architectural differences between the AMD Radeon 8065S and the NVIDIA H800 SXM5?

A: The Radeon 8065S uses AMD's RDNA 3.5 architecture on a 4 nm TSMC process, built around the Gorgon Halo chip. The H800 SXM5 uses NVIDIA's Hopper architecture on a 5 nm TSMC process, built around the GH100 chip. The Radeon is a mobile integrated graphics processor (IGP) with no dedicated memory, while the H800 is a server module with 80 GB of HBM3 memory.

Q: How do their compute capabilities compare?

A: The H800 SXM5 delivers 59.30 TFLOPS of FP32 performance, which is approximately 3.9 times the 15.36 TFLOPS of the Radeon 8065S. In FP16, the H800 reaches 237.2 TFLOPS (4:1 ratio), versus 15.36 TFLOPS (1:1) for the Radeon.

Q: What is the memory configuration for each?

A: The Radeon 8065S uses System Shared memory with bandwidth described as System Dependent. The H800 SXM5 uses 80 GB of HBM3 on a 5120-bit bus, delivering 3.36 TB/s of bandwidth.

Q: What are the power requirements?

A: The Radeon 8065S has a TDP of 55 W and uses no power connectors. The H800 SXM5 has a TDP of 700 W, uses an 8-pin EPS connector, and requires a suggested PSU of 1100 W.

Q: Which APIs does each support?

A: The Radeon 8065S supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H800 SXM5 lists no API support in the database for DirectX, OpenGL, or Vulkan.

Q: What are the physical form factors?

A: The Radeon 8065S is an integrated graphics processor (IGP) with a slot width of IGP and display outputs described as Portable Device Dependent. The H800 SXM5 is an SXM Module with no display outputs.

Architecture Differences

The AMD Radeon 8065S and NVIDIA H800 SXM5 represent two fundamentally different design philosophies. The Radeon 8065S is built on the RDNA 3.5 architecture, fabricated on a 4 nm TSMC process with a die size of 308 mm². It belongs to the Navi Mobile (RX 8000M) generation and is designed as an integrated graphics processor. The H800 SXM5 uses the Hopper architecture, fabricated on a 5 nm TSMC process with a substantially larger die of 814 mm². The H800 packs 80,000 million transistors, resulting in a transistor density of 98.3M per mm², whereas the Radeon's transistor count is listed as unknown.

The Radeon 8065S uses the Gorgon Halo chip and features 2560 shading units, 160 texture mapping units, 64 ROPs, and 40 ray tracing cores. The H800 SXM5 uses the GH100 chip with 16,896 shading units, 528 TMUs, 24 ROPs, and 528 tensor cores. The H800 does not list dedicated ray tracing cores, while the Radeon does not list tensor cores. This reflects their intended workloads: the Radeon targets graphics and ray tracing, while the H800 emphasizes tensor operations for compute-heavy server tasks.

Memory architecture differs completely. The Radeon 8065S shares system memory with no dedicated VRAM, no fixed bus width, and bandwidth that depends on the host system. The H800 SXM5 uses 80 GB of HBM3 on a 5120-bit bus with 3.36 TB/s of bandwidth. This gives the H800 a massive memory advantage in both capacity and throughput.

Clock behavior also differs. The Radeon 8065S has a base clock of 1295 MHz and a boost clock of 3000 MHz. The H800 SXM5 has a base clock of 1095 MHz and a boost clock of 1755 MHz. Despite lower clocks, the H800 achieves higher throughput due to its much larger execution resource pool. The Radeon's memory clock is listed as System Shared, while the H800 runs at 1313 MHz with 5.3 Gbps effective.

The Radeon 8065S supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, indicating a full graphics feature set. The H800 SXM5 lists no API support in the database, consistent with its server positioning where graphics APIs are not a primary concern. The Radeon has a production status of Active and a release date of 2025-12-31, while the H800 has a release date of 2023-03-20 and its successor is listed as Server Blackwell.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between the AMD Radeon 8065S and the NVIDIA H800 SXM5. Both items have zero recorded benchmark scores, an average benchmark score of 0, and no nearest rivals listed. The winsA and winsB fields are both 0, indicating no comparative benchmark victories for either side.

Without recorded measurements, the comparison must rely on specification-derived performance indicators. The H800 SXM5 shows a clear advantage in raw compute throughput. Its FP32 performance of 59.30 TFLOPS is roughly 3.9 times the Radeon's 15.36 TFLOPS. In FP16 workloads, the H800's 237.2 TFLOPS is about 15.4 times the Radeon's 15.36 TFLOPS, though this comparison requires caution because the Radeon's FP16 runs at a 1:1 ratio while the H800 uses a 4:1 ratio.

Texture and pixel rates follow a mixed pattern. The H800 SXM5 delivers 926.6 GTexel/s, which is approximately 1.9 times the Radeon's 480.0 GTexel/s. However, the Radeon 8065S achieves 192.0 GPixel/s, which is about 4.6 times the H800's 42.12 GPixel/s. This indicates that the Radeon is more efficient at pixel output per compute unit, likely due to its higher ROP count relative to its shading units and its much higher boost clock of 3000 MHz versus 1755 MHz.

The memory bandwidth comparison is stark. The H800 SXM5's 3.36 TB/s of HBM3 bandwidth is not directly comparable to the Radeon's System Dependent bandwidth, but the H800's dedicated 80 GB pool with a 5120-bit bus provides a level of memory performance that an integrated GPU sharing system memory cannot match. This bandwidth advantage is critical for the H800's compute workloads.

Both GPUs sit at the 50th percentile versus all GPUs in the database, and both have an average benchmark score of 0. This means the database does not currently rank one above the other based on measured performance.

Specification Differences

The two GPUs differ across nearly every specification field.

Process and die: The Radeon 8065S uses a 4 nm process with a 308 mm² die and unknown transistor count. The H800 SXM5 uses a 5 nm process with an 814 mm² die and 80,000 million transistors.

Clocks: The Radeon has a base clock of 1295 MHz and a boost of 3000 MHz. The H800 has a base of 1095 MHz and a boost of 1755 MHz. The Radeon's memory clock is System Shared; the H800 runs at 1313 MHz with 5.3 Gbps effective.

Memory: The Radeon uses System Shared memory with System Dependent bandwidth. The H800 uses 80 GB of HBM3 on a 5120-bit bus with 3.36 TB/s bandwidth.

Compute units: The Radeon has 2560 shading units, 160 TMUs, 64 ROPs, and 40 ray tracing cores. The H800 has 16,896 shading units, 528 TMUs, 24 ROPs, and 528 tensor cores. The Radeon lists no tensor cores; the H800 lists no ray tracing cores.

Rates: The Radeon's pixel rate is 192.0 GPixel/s and texture rate is 480.0 GTexel/s. The H800's pixel rate is 42.12 GPixel/s and texture rate is 926.6 GTexel/s.

Compute throughput: The Radeon delivers 15.36 TFLOPS FP32 and 15.36 TFLOPS FP16 (1:1). The H800 delivers 59.30 TFLOPS FP32 and 237.2 TFLOPS FP16 (4:1).

Power and form factor: The Radeon has a TDP of 55 W, uses no power connectors, and is an IGP with Portable Device Dependent display outputs. The H800 has a TDP of 700 W, uses an 8-pin EPS connector, requires a suggested PSU of 1100 W, is an SXM Module, and has no display outputs.

API support: The Radeon supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H800 lists no API support.

Bus interface: Both use PCIe 5.0 x16.

Release dates: The Radeon 8065S has a release date of 2025-12-31. The H800 SXM5 has a release date of 2023-03-20.

Where Each One Wins

The AMD Radeon 8065S wins in scenarios that prioritize pixel throughput and power efficiency. Its pixel rate of 192.0 GPixel/s is more than 4.5 times that of the H800 SXM5, which makes it better suited for rasterization-heavy graphics work where high fill rates matter. Its 55 W TDP is drastically lower than the H800's 700 W, meaning it can operate in power-constrained mobile or portable devices without dedicated power connectors. The Radeon's boost clock of 3000 MHz also indicates strong single-threaded graphics execution for its class. Its support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 makes it a fully featured graphics solution for gaming or client-side rendering.

The NVIDIA H800 SXM5 wins in compute-heavy server workloads. Its FP32 throughput of 59.30 TFLOPS and FP16 throughput of 237.2 TFLOPS dwarf the Radeon's 15.36 TFLOPS in both precisions. The 528 tensor cores give it a dedicated path for matrix operations, which are central to AI inference and training. Its 80 GB of HBM3 memory with 3.36 TB/s bandwidth provides the capacity and speed needed for large datasets that cannot fit in system memory. The texture rate of 926.6 GTexel/s is nearly double the Radeon's, which helps in texture-heavy compute pipelines. The H800 is designed for a 700 W power envelope with an 8-pin EPS connector and an 1100 W suggested PSU, indicating it belongs in a server chassis with substantial power delivery.

The Radeon's ray tracing cores (40) give it an advantage in applications that use hardware-accelerated ray tracing, a feature the H800 does not list. The H800's tensor cores give it the advantage in deep learning workloads, a feature the Radeon does not list. The Radeon's integrated design means it requires no separate memory purchase and consumes minimal power, while the H800's dedicated memory and massive compute resources come at a high power cost.

The Verdict

The data shows two purpose-built processors with minimal overlap in intended use. The AMD Radeon 8065S is a mobile integrated GPU with a 55 W TDP, no power connectors, and system-shared memory. Its strengths are pixel throughput (192.0 GPixel/s), a high boost clock (3000 MHz), and modern graphics API support. It is appropriate for portable devices where power draw and physical size are constraints, and where the host system provides shared memory.

The NVIDIA H800 SXM5 is a server accelerator with a 700 W TDP, an 8-pin EPS connector, and a suggested PSU of 1100 W. Its strengths are FP32 compute (59.30 TFLOPS), FP16 compute (237.2 TFLOPS), tensor cores (528), and dedicated HBM3 memory (80 GB at 3.36 TB/s). It is appropriate for compute-heavy server workloads where massive memory bandwidth and tensor performance are required.

Neither GPU demonstrates a benchmark-derived advantage in the database, as both have zero recorded benchmark scores and no nearest rivals. The specification comparison, however, clearly separates them: the Radeon 8065S for graphics-centric mobile use, the H800 SXM5 for compute-centric server deployment. A buyer choosing between them would select based on workload, not on measured performance, since no head-to-head data exists. The Radeon's pixel rate advantage and low power draw make it the choice for display-oriented tasks; the H800's compute throughput and memory bandwidth make it the choice for data center acceleration.