AMD Instinct MI455X vs AMD Radeon 8060S Comparison

FAQ

Q: What is the primary architectural difference between the AMD Instinct MI455X and the AMD Radeon 8060S?

A: The Instinct MI455X uses the CDNA 5.0 architecture built on a 2 nm process at TSMC, while the Radeon 8060S uses the RDNA 3.5 architecture on a 4 nm process at TSMC. The MI455X is a compute-focused accelerator with 32,768 shading units, whereas the 8060S is a mobile graphics solution with 2,560 shading units.

Q: How do their memory configurations compare?

A: The Instinct MI455X has 432 GB of HBM4 memory with a 24,576-bit bus and 23.3 TB/s bandwidth. The Radeon 8060S uses System Shared memory, meaning its memory size, type, bus width, and bandwidth are all dependent on the host system.

Q: Which part has higher clock speeds?

A: The Radeon 8060S has a higher boost clock at 2900 MHz and a base clock of 1295 MHz. The Instinct MI455X has a base clock of 1000 MHz and a boost clock of 2400 MHz.

Q: What is the performance percentile ranking for each GPU?

A: The Instinct MI455X sits at the 50th percentile among all GPUs with an average benchmark score of 0. The Radeon 8060S ranks at the 87th percentile with an average benchmark score of 55,757 across three recorded tests.

Q: Does the Radeon 8060S support modern graphics APIs?

A: Yes, the 8060S supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Instinct MI455X has no API support listed, with DirectX, OpenGL, and Vulkan all marked as N/A.

Q: What are the thermal design power ratings?

A: The Instinct MI455X has a TDP of 2300 W with a suggested power supply of 2700 W. The Radeon 8060S has a TDP of just 55 W and no suggested PSU rating.

Architecture Differences

The Instinct MI455X is built on the CDNA 5.0 architecture, AMD's compute-optimized design for data center acceleration. It uses a 2 nm process at TSMC with 320,000 million transistors on a 2990 mm² die, yielding a transistor density of 107.0 million transistors per square millimeter. The chip is designated MI450 256CU and belongs to the Instinct (MIx) generation.

The Radeon 8060S uses the RDNA 3.5 architecture, designed for graphics rendering in mobile devices. It is built on a 4 nm process at TSMC with a 308 mm² die size and transistor count listed as unknown. The chip is named Strix Halo and belongs to the Navi Mobile (RX 8000M) generation.

The MI455X has 32,768 shading units, 1,024 texture mapping units, and zero ROPs, reflecting its compute-first design. The 8060S has 2,560 shading units, 160 TMUs, 64 ROPs, and 40 ray tracing cores, indicating a full graphics pipeline. The MI455X has no ray tracing cores listed.

The MI455X uses HBM4 memory with 432 GB capacity, a 24,576-bit bus, and 23.3 TB/s bandwidth. The 8060S relies on System Shared memory, with all memory parameters dependent on the host platform. The MI455X has no display outputs, while the 8060S has outputs dependent on the portable device it is integrated into.

Power delivery differs substantially. The MI455X has a 2300 W TDP and requires a 2700 W suggested power supply, with no power connectors listed. The 8060S draws only 55 W and has no power connectors either. The MI455X uses an EAM Module slot width, while the 8060S is an IGP.

Bus interfaces also differ: the MI455X uses PCIe 6.0 x16, and the 8060S uses PCIe 5.0 x16. The MI455X has a release date of 2026-07-22, while the 8060S was released on 2025-01-05. The MI455X predecessor is Radeon Instinct, and the 8060S predecessor is Polaris Mobile.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark comparisons between the Instinct MI455X and the Radeon 8060S. The MI455X has an empty benchmark array, so no recorded scores exist for it. The 8060S has three individual benchmark results.

The Radeon 8060S scores 2,162 in 3DMark Steel Nomad DX12, 84,626 in Geekbench OpenCL, and 80,483 in Geekbench Vulkan. Its average benchmark score is 55,757, placing it at the 87th percentile among all GPUs.

Since the MI455X has no benchmark data, its percentile stands at 50 with an average score of 0. This means the database has no measurable performance data for the MI455X, while the 8060S has a substantial set of recorded results.

The nearest rivals for the 8060S provide context for interpreting its scores. The AMD Radeon RX 6750 GRE 12 GB has an average score of 55,698, which is 0.1% lower than the 8060S. The NVIDIA GeForce RTX 5080 scores 56,083, which is 0.6% higher. The AMD Radeon Pro W5700X scores 54,828, which is 1.7% lower. The NVIDIA GeForce RTX 4080 scores 54,247, which is 2.8% lower.

This indicates the 8060S performs nearly identically to the RX 6750 GRE 12 GB, slightly below the RTX 5080, and modestly ahead of the Pro W5700X and RTX 4080. The data shows the 8060S is competitive with desktop discrete graphics cards from the previous generation despite its mobile IGP form factor.

The MI455X has no nearest rivals listed, so no comparative performance statements can be made from the database.

Specification Differences

The two GPUs differ across nearly every recorded specification field.

The process node differs: 2 nm for the MI455X versus 4 nm for the 8060S. Both use TSMC as the foundry, but transistor counts diverge sharply: 320,000 million for the MI455X versus unknown for the 8060S. Die size is 2990 mm² versus 308 mm².

Clock speeds differ: the MI455X has a 1000 MHz base and 2400 MHz boost, while the 8060S has a 1295 MHz base and 2900 MHz boost. Memory clock for the MI455X is 1900 MHz at 7.6 Gbps effective, while the 8060S uses System Shared memory with no dedicated memory clock.

Memory capacity: 432 GB of HBM4 versus System Shared. Bus width: 24,576 bit versus System Shared. Bandwidth: 23.3 TB/s versus System Dependent.

Compute resources: 32,768 shading units versus 2,560; 1,024 TMUs versus 160; 0 ROPs versus 64. The 8060S has 40 ray tracing cores, while none are listed for the MI455X.

Pixel rate: 0 MPixel/s versus 185.6 GPixel/s. Texture rate: 2,457.6 GTexel/s versus 464.0 GTexel/s. FP32 performance: 157.3 TFLOPS versus 14.85 TFLOPS. FP16 performance: 157.3 TFLOPS (1:1) versus 14.85 TFLOPS (1:1).

TDP: 2300 W versus 55 W. Slot width: EAM Module versus IGP. Power connectors: None for both. Suggested PSU: 2700 W for the MI455X, none for the 8060S.

Bus interface: PCIe 6.0 x16 versus PCIe 5.0 x16. Display outputs: No outputs versus Portable Device Dependent.

API support: the MI455X has N/A for DirectX, OpenGL, and Vulkan, while the 8060S supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Production status: null for the MI455X versus Active for the 8060S. Release date: 2026-07-22 versus 2025-01-05.

Where Each One Wins

The Radeon 8060S wins in graphics rendering capability. It has 64 ROPs, 40 ray tracing cores, and a pixel rate of 185.6 GPixel/s, all of which are essential for rasterization and ray-traced workloads. The MI455X has zero ROPs and no ray tracing cores, making it unsuitable for traditional graphics output.

The 8060S also wins in clock speed, with a 2900 MHz boost versus 2400 MHz for the MI455X. Its base clock is 1295 MHz versus 1000 MHz.

The MI455X wins decisively in raw compute throughput. Its FP32 performance of 157.3 TFLOPS is more than ten times the 14.85 TFLOPS of the 8060S. FP16 performance follows the same ratio at 157.3 TFLOPS versus 14.85 TFLOPS.

The MI455X wins in texture processing with a 2,457.6 GTexel/s rate versus 464.0 GTexel/s for the 8060S.

Memory capacity and bandwidth favor the MI455X overwhelmingly. Its 432 GB of HBM4 with 23.3 TB/s bandwidth vastly exceeds the System Shared memory of the 8060S, which has no dedicated bandwidth figure.

The MI455X wins on process technology with a 2 nm node versus 4 nm, and on transistor count with 320,000 million versus unknown.

The 8060S wins on power efficiency. Its 55 W TDP is dramatically lower than the 2300 W TDP of the MI455X, making it suitable for battery-powered devices.

The 8060S wins on API compatibility, supporting DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the MI455X has no API support recorded.

The 8060S wins on production status, listed as Active, while the MI455X has no production status.

The Verdict

The data presents two fundamentally different products from AMD. The Instinct MI455X is a compute accelerator with massive FP32 throughput, enormous memory capacity, and no graphics output capability. The Radeon 8060S is a mobile integrated GPU with full graphics features, ray tracing support, and modest power draw.

Benchmark results exist only for the 8060S, which demonstrates competitive performance at the 87th percentile with an average score of 55,757. Its nearest rival, the RX 6750 GRE 12 GB, is within 0.1% in average score, confirming the 8060S is a capable performer for its class. The MI455X has no recorded benchmarks, so no performance validation exists in the database.

Users needing a graphics solution for a portable device should consider the 8060S. It delivers ray tracing, modern API support, and a 55 W TDP, all packaged as an IGP. Its benchmark scores place it alongside desktop discrete GPUs like the RTX 4080 and RX 6750 GRE.

Users needing high-throughput compute for data center workloads should consider the MI455X. Its 157.3 TFLOPS FP32 performance, 432 GB HBM4 memory, and 23.3 TB/s bandwidth are designed for compute-intensive tasks. However, the absence of benchmark data means its practical performance cannot be verified from the database.

The MI455X has a later release date and no production status, while the 8060S is active and already released. The 8060S also supports standard graphics APIs, which the MI455X lacks entirely.

The choice depends on workload type. For graphics rendering and API-driven applications, the 8060S is the only option with recorded support. For raw compute density and memory bandwidth, the MI455X presents the stronger specification sheet, though without benchmarks to confirm real-world results.