AMD Radeon Instinct MI25 vs Intel Arc A730M Comparison

AMD Radeon Instinct MI25 and Intel Arc A730M occupy different corners of the hardware spectrum, yet their raw compute numbers place them in a surprisingly close contest. The MI25 is a datacenter-oriented accelerator from 2017, built for sustained throughput, while the A730M is a mobile GPU designed for laptops with a modern feature set. The benchmark data shows a single direct comparison, with the Intel part taking the win, but the architectural philosophies behind each card tell a more nuanced story.

Where Each One Wins

The AMD Radeon Instinct MI25 is engineered for raw compute density in a server context. Its 4096 shading units and 256 texture mapping units deliver a texture rate of 384.0 GTexel/s, which is virtually identical to the A730M's 393.6 GTexel/s. However, the MI25's advantage lies in its memory subsystem: 16 GB of HBM2 on a 2048-bit bus provides 436.2 GB/s of bandwidth. This is a 30% wider pipe than the A730M's 336.0 GB/s, making the MI25 better suited for workloads that stream large datasets, such as scientific simulations or large matrix operations where memory capacity and bandwidth are the primary constraints.

The Intel Arc A730M wins on architectural modernity and efficiency. Its 6 nm TSMC process node packs 21,700 million transistors into a 406 mm² die, achieving a transistor density of 53.4M per mm², more than double the MI25's 25.3M per mm². This allows the A730M to deliver comparable compute with a 300 W lower power envelope (80 W TDP versus 300 W). The A730M also supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, whereas the MI25 is limited to DirectX 12 (12_1) and Vulkan 1.3. For gaming or client-side rendering, the A730M's 24 ray tracing cores and higher pixel rate of 196.8 GPixel/s (more than double the MI25's 96.0 GPixel/s) give it a decisive edge in modern graphics workloads. The MI25 has no display outputs, confirming its role as a compute-only accelerator, while the A730M is designed to drive portable device displays.

Architecture Differences

The MI25 is built on AMD's GCN 5.0 architecture, using the Vega 10 chip fabricated on a 14 nm GlobalFoundries process. The die measures 495 mm² and houses 12,500 million transistors. Its memory is HBM2, running at 852 MHz with an effective 1704 Mbps rate, across a 2048-bit bus. The GPU operates at a base clock of 1400 MHz and boosts to 1500 MHz. It has 64 ROPs, a pixel rate of 96.00 GPixel/s, and a texture rate of 384.0 GTexel/s. Floating-point performance is rated at 12.29 TFLOPS for FP32 and 24.58 TFLOPS for FP16 with a 2:1 ratio. The card is dual-slot, requires two 8-pin power connectors, and has a suggested PSU of 700 W. It uses a PCIe 3.0 x16 interface.

The A730M uses Intel's Xe-HPG architecture, specifically the DG2-512 chip, fabricated on a 6 nm TSMC process. The die is 406 mm² with 21,700 million transistors. Memory is 12 GB of GDDR6 on a 192-bit bus, running at 1750 MHz (14 Gbps effective), yielding 336.0 GB/s. The GPU has 3072 shading units, 192 TMUs, 96 ROPs, and 24 ray tracing cores. Base clock is 1100 MHz with a boost of 2050 MHz. Pixel rate is 196.8 GPixel/s, texture rate is 393.6 GTexel/s, and FP32 performance is 12.60 TFLOPS, with FP16 at 25.19 TFLOPS (2:1). It is an integrated graphics package (IGP) with no dedicated slot width, no power connectors, and no suggested PSU, drawing just 80 W. It interfaces via PCIe 4.0 x16 and its display outputs are portable-device dependent.

The fundamental difference is purpose. The MI25 is a high-power, high-bandwidth compute card from an era before ray tracing was standard. The A730M is a power-efficient, feature-rich mobile GPU that trades memory bandwidth for modern API support, higher clocks, and a much smaller thermal footprint.

Head-to-Head Benchmarks

The only direct benchmark comparison in the database is Geekbench OpenCL. Here, the Intel Arc A730M scores 70352, while the AMD Radeon Instinct MI25 scores 68562. The delta is 2.5% in favor of the A730M. This is a narrow margin, but it is consistent with the A730M's higher FP32 throughput (12.60 TFLOPS versus 12.29 TFLOPS) and its significantly higher boost clock of 2050 MHz versus the MI25's 1500 MHz.

Looking at the nearest rivals for context, the MI25 sits at the 90th percentile of all GPUs, with an average score of 68562. Its closest competitor is the Intel Arc A770, which averages 68809, a 0.4% difference. The NVIDIA CMP 90HX is 0.6% ahead, and the AMD Radeon Pro WX 8200 is 1.9% ahead. The data shows the MI25 is within a hair's breadth of these cards, making it a solid mid-pack compute performer for its generation.

The A730M, however, has a more complex profile. Its Geekbench OpenCL score of 70352 is strong, but its average benchmark score across all tests is only 45592, dragged down by its 3DMark Steel Nomad DX12 result of 1732 and a Geekbench Vulkan score of 64693. The A730M's nearest rivals include the AMD Radeon Pro 5500 XT (0.5% ahead), the NVIDIA RTX 5880 Ada Generation (0.8% behind), the NVIDIA GeForce RTX 5090 Mobile (1% ahead), and the NVIDIA RTX A2000 (1% behind). This places the A730M in the 84th percentile, showing that while its OpenCL compute is excellent, its overall gaming and workstation performance is more variable.

FAQ

Q: Which GPU has higher raw compute performance?

A: The Intel Arc A730M has a slight edge in FP32 with 12.60 TFLOPS versus the MI25's 12.29 TFLOPS. In the Geekbench OpenCL test, the A730M scores 70352, which is 2.5% higher than the MI25's 68562.

Q: Which GPU has more memory bandwidth?

A: The AMD Radeon Instinct MI25 has significantly higher memory bandwidth at 436.2 GB/s, thanks to its 2048-bit HBM2 interface. The Intel Arc A730M offers 336.0 GB/s over a 192-bit GDDR6 bus.

Q: Can either GPU support ray tracing?

A: Only the Intel Arc A730M supports ray tracing, with 24 dedicated RT cores. The AMD Radeon Instinct MI25 has no RT cores and is limited to DirectX 12 (12_1), while the A730M supports DirectX 12 Ultimate (12_2).

Q: What is the power consumption difference?

A: The AMD Radeon Instinct MI25 has a TDP of 300 W and requires a 700 W power supply, while the Intel Arc A730M has a TDP of just 80 W and no separate power connectors, as it is an integrated graphics package.

Q: Which GPU is better for modern gaming APIs?

A: The Intel Arc A730M is better suited for modern APIs, supporting DirectX 12 Ultimate and Vulkan 1.4. The AMD Radeon Instinct MI25 only supports DirectX 12 (12_1) and Vulkan 1.3, making it less compatible with the latest titles.

Q: How do these GPUs compare in transistor density?

A: The Intel Arc A730M is far denser, with 53.4 million transistors per mm² on its 6 nm process. The AMD Radeon Instinct MI25 has 25.3 million transistors per mm² on its 14 nm process.

The Verdict

The database points to a clear split by workload. If the task is compute-heavy with large memory footprints, the AMD Radeon Instinct MI25 is the logical choice. Its 16 GB of HBM2 and 436.2 GB/s bandwidth are unmatched by the A730M, and its compute density (4096 shaders) is higher. The MI25's 90th percentile ranking against all GPUs confirms it remains a viable compute accelerator despite its age.

If the task involves modern graphics, ray tracing, or power-sensitive mobile use, the Intel Arc A730M is the better pick. It wins the only head-to-head benchmark by 2.5%, offers 24 RT cores, supports DirectX 12 Ultimate, and does so at 80 W versus 300 W. Its 84th percentile overall is lower, but that is due to gaming-oriented tests where its 12 GB memory and 192-bit bus are less competitive. The A730M's 6 nm process and 53.4M transistors per mm² density demonstrate a more advanced design.

The verdict from the data is straightforward: the MI25 for bandwidth-bound compute, the A730M for feature-rich, efficient graphics. Neither is a clear winner across the board, but each dominates its intended domain.