AMD Instinct MI355X vs Intel Arc 140T Mobile Comparison

AMD Instinct MI355X and Intel Arc 140T Mobile occupy opposite ends of the GPU spectrum, yet the recorded data places both at the 50th percentile among all GPUs in the database. This parity in percentile ranking, however, masks a fundamental divergence in purpose, architecture, and physical design. The MI355X is a 1400 W OAM module built for compute acceleration, while the Arc 140T is a 35 W integrated graphics processor for mobile systems. The data shows no overlap in their intended workloads, and the benchmark results, while empty in the head-to-head table, are informed entirely by their specification sheets and architectural choices.

Where Each One Wins

The AMD Instinct MI355X wins in every category that demands raw compute throughput, memory capacity, and memory bandwidth. Its shading unit count reaches 16,384, compared to 1,024 for the Arc 140T, a 16-fold difference. The texture mapping units number 1,024 versus 64, a 16-fold gap as well. The MI355X delivers 78.64 TFLOPS of FP32 performance, while the Arc 140T manages 4.813 TFLOPS, a difference of roughly 16.3 times. FP16 performance on the MI355X is listed at 78.64 TFLOPS with a 1:1 ratio to FP32, whereas the Arc 140T produces 9.626 TFLOPS at a 2:1 ratio, meaning the MI355X offers about 8.2 times the FP16 throughput. Texture rate for the MI355X is 2,457.6 GTexel/s, and for the Arc 140T it is 150.4 GTexel/s, a 16.3-fold advantage for the AMD part.

Memory capacity is another decisive win for the MI355X. It carries 288 GB of HBM3e memory across an 8,192-bit bus, delivering 8.19 TB/s of bandwidth. The Arc 140T uses System Shared memory, with bus width and bandwidth marked as System Dependent. The MI355X also has a larger process node advantage in terms of feature size, using TSMC's 3 nm process, while the Arc 140T uses TSMC's 5 nm process. The MI355X is built on the CDNA 4.0 architecture with the MI350 256CU chip, whereas the Arc 140T uses the Xe-LPG+ architecture on the Arrow Lake-H chip.

The Intel Arc 140T Mobile wins in categories related to integration, power efficiency, and feature support for consumer graphics APIs. Its TDP is 35 W, compared to 1,400 W for the MI355X, a 40-fold difference. The Arc 140T is an IGP with no separate slot width, while the MI355X requires an OAM Module slot. The Arc 140T supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the MI355X lists N/A for all three APIs. The Arc 140T has 8 ray tracing cores, whereas the MI355X lists no RT cores. Pixel rate for the Arc 140T is 75.20 GPixel/s, while the MI355X records 0 MPixel/s, reflecting the Intel part's ability to drive displays. The Arc 140T also has a production status of Active, while the MI355X does not list a production status.

The Verdict

The data indicates that the AMD Instinct MI355X is designed for server and accelerator environments where massive FP32 and FP16 throughput, enormous memory capacity, and extreme bandwidth are paramount. Its 78.64 TFLOPS FP32 and 8.19 TB/s bandwidth place it in a class of hardware intended for large-scale computation, scientific simulation, or AI training workloads. The MI355X has no display outputs, no graphics API support, and a pixel rate of 0 MPixel/s, which confirms it is not a graphics card in the traditional sense. The 1,400 W TDP and 1,800 W suggested PSU reinforce that this is a data-center component with dedicated power delivery infrastructure.

The Intel Arc 140T Mobile, conversely, is an integrated GPU for laptops and portable devices. Its 35 W TDP, System Shared memory, and Portable Device Dependent display outputs align with mobile computing needs. The support for DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 means it can handle modern gaming and graphics applications, and the 8 ray tracing cores enable hardware-accelerated ray tracing, a feature the MI355X lacks entirely. The Arc 140T's FP32 of 4.813 TFLOPS is modest compared to the MI355X, but it is sufficient for integrated graphics in a mobile context. The pixel rate of 75.20 GPixel/s and texture rate of 150.4 GTexel/s indicate real rasterization capability, which the MI355X does not provide.

For a user selecting a GPU for compute-heavy server workloads, the MI355X is the only choice based on this data. For a mobile device requiring graphics output, energy efficiency, and API compatibility, the Arc 140T is the only option. The recorded data shows no overlap in their feature sets, and each product wins exclusively in its own domain.

Head-to-Head Benchmarks

The head-to-head benchmark table is empty, with zero wins recorded for either product. The average benchmark score for both is 0, and the percentile versus all GPUs is 50 for each. This absence of direct benchmark comparisons means the analysis relies on specification-derived performance indicators.

The largest performance differential appears in FP32 compute. The MI355X delivers 78.64 TFLOPS, and the Arc 140T delivers 4.813 TFLOPS, which places the MI355X ahead by approximately 16.3 times. This is the most significant numeric gap in the dataset. In FP16, the MI355X again leads with 78.64 TFLOPS, while the Arc 140T reaches 9.626 TFLOPS, a 8.2-fold difference. The FP16 ratio also differs: the MI355X lists a 1:1 ratio to FP32, meaning it does not gain extra throughput in half precision, while the Arc 140T lists a 2:1 ratio, indicating it doubles its FP16 rate relative to FP32.

Memory bandwidth presents another major win for the MI355X. Its 8.19 TB/s bandwidth is more than an order of magnitude higher than the Arc 140T's System Dependent bandwidth, which is not quantified in the database. The MI355X's 288 GB capacity and 8,192-bit bus width have no equivalent in the Arc 140T, which uses System Shared memory with no dedicated bus width. Texture rate favors the MI355X at 2,457.6 GTexel/s versus 150.4 GTexel/s, a 16.3-fold lead. The MI355X also has more shading units (16,384 versus 1,024) and more TMUs (1,024 versus 64).

The Arc 140T wins in pixel rate, 75.20 GPixel/s versus 0 MPixel/s for the MI355X. This reflects the Intel part's ability to output to displays, a function the AMD part does not support. The Arc 140T also has ray tracing cores, 8 of them, while the MI355X lists none. Clock speeds show the MI355X has a base of 1000 MHz and a boost of 2400 MHz, while the Arc 140T has a base of 300 MHz and a boost of 2350 MHz. The MI355X's memory clock is 2000 MHz with 8 Gbps effective, whereas the Arc 140T's memory clock is System Shared.

FAQ

Q: Which GPU has higher FP32 performance?

A: The AMD Instinct MI355X delivers 78.64 TFLOPS of FP32 performance, while the Intel Arc 140T Mobile delivers 4.813 TFLOPS. The MI355X is approximately 16.3 times faster in FP32.

Q: Does the Intel Arc 140T Mobile support ray tracing?

A: Yes, the Arc 140T has 8 ray tracing cores. The AMD Instinct MI355X lists no ray tracing cores.

Q: What is the memory configuration of the AMD Instinct MI355X?

A: The MI355X uses 288 GB of HBM3e memory with an 8,192-bit bus width and 8.19 TB/s bandwidth.

Q: What memory does the Intel Arc 140T Mobile use?

A: The Arc 140T uses System Shared memory, with the memory type, bus width, and bandwidth all listed as System Shared or System Dependent.

Q: Which GPU supports DirectX 12 Ultimate?

A: The Intel Arc 140T Mobile supports DirectX 12 Ultimate (12_2), along with OpenGL 4.6 and Vulkan 1.4. The AMD Instinct MI355X lists N/A for DirectX, OpenGL, and Vulkan.

Q: What is the TDP difference between the two GPUs?

A: The AMD Instinct MI355X has a TDP of 1,400 W, while the Intel Arc 140T Mobile has a TDP of 35 W.

Architecture Differences

The AMD Instinct MI355X uses the CDNA 4.0 architecture, built on the MI350 256CU chip. It is part of the Instinct (MIx) generation. The Intel Arc 140T Mobile uses the Xe-LPG+ architecture, built on the Arrow Lake-H chip, and belongs to the Arc Graphics-M (Arrow Lake) generation. The process nodes differ: the MI355X is fabricated on TSMC's 3 nm process, while the Arc 140T uses TSMC's 5 nm process. The MI355X has a transistor count of 185,000 million, with a die size of 2380 mm² and a transistor density of 77.7M per mm². The Arc 140T has unknown transistor count, die size, and transistor density.

The MI355X is designed for compute with 16,384 shading units, 1,024 TMUs, and 0 ROPs. It has no ray tracing cores and no tensor cores listed. The Arc 140T has 1,024 shading units, 64 TMUs, 32 ROPs, and 8 ray tracing cores, with no tensor cores listed. The MI355X has a pixel rate of 0 MPixel/s, while the Arc 140T has a pixel rate of 75.20 GPixel/s. The MI355X has no display outputs, while the Arc 140T has Portable Device Dependent display outputs.

The MI355X's FP16 performance is 78.64 TFLOPS at a 1:1 ratio to FP32, meaning it does not scale FP16 throughput. The Arc 140T's FP16 is 9.626 TFLOPS at a 2:1 ratio, doubling its FP32 rate. The MI355X is a PCIe 5.0 x16 device, while the Arc 140T uses an IGP bus interface. The MI355X is an OAM Module with no power connectors, and it suggests an 1,800 W PSU. The Arc 140T is an IGP with no power connectors listed and no suggested PSU.

Specification Differences

The specification differences between the two products are extensive. The AMD Instinct MI355X uses a 3 nm process node, while the Intel Arc 140T Mobile uses a 5 nm node. The MI355X has 185,000 million transistors, while the Arc 140T's transistor count is unknown. The MI355X has a die size of 2380 mm², while the Arc 140T's die size is unknown. The MI355X has a base clock of 1000 MHz and a boost clock of 2400 MHz, while the Arc 140T has a base clock of 300 MHz and a boost clock of 2350 MHz. The MI355X's memory clock is 2000 MHz with 8 Gbps effective, while the Arc 140T's memory clock is System Shared.

Memory size differs: the MI355X has 288 GB of HBM3e, while the Arc 140T has System Shared memory. The MI355X has an 8,192-bit bus width, while the Arc 140T has a System Shared bus width. The MI355X's bandwidth is 8.19 TB/s, while the Arc 140T's is System Dependent. Shading units number 16,384 for the MI355X and 1,024 for the Arc 140T. TMUs are 1,024 for the MI355X and 64 for the Arc 140T. ROPs are 0 for the MI355X and 32 for the Arc 140T. The MI355X has no ray tracing cores, while the Arc 140T has 8.

Pixel rate is 0 MPixel/s for the MI355X and 75.20 GPixel/s for the Arc 140T. Texture rate is 2,457.6 GTexel/s for the MI355X and 150.4 GTexel/s for the Arc 140T. FP32 is 78.64 TFLOPS for the MI355X and 4.813 TFLOPS for the Arc 140T. FP16 is 78.64 TFLOPS at 1:1 for the MI355X and 9.626 TFLOPS at 2:1 for the Arc 140T. TDP is 1,400 W for the MI355X and 35 W for the Arc 140T. The MI355X uses an OAM Module slot, while the Arc 140T is an IGP. The MI355X has no power connectors, and the Arc 140T also lists no power connectors. The MI355X suggests an 1,800 W PSU, while the Arc 140T has no suggested PSU. The bus interface is PCIe 5.0 x16 for the MI355X and IGP for the Arc 140T. Display outputs are No outputs for the MI355X and Portable Device Dependent for the Arc 140T. The MI355X lists N/A for DirectX, OpenGL, and Vulkan, while the Arc 140T supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. Dimensions for the MI355X are 102 mm length and 165 mm width, while the Arc 140T has no listed dimensions. The MI355X released on 2025-06-11, and the Arc 140T released on 2025-01-12. The predecessor for the MI355X is Radeon Instinct, and for the Arc 140T it is HD Graphics-M. Neither product lists a successor.