AMD Instinct MI325X vs Intel Iris Xe Graphics 80EU Mobile Comparison

FAQ

Q: What are the two GPUs compared in this analysis?

A: The AMD Instinct MI325X, an accelerator built on the CDNA 3.0 architecture with the Aqua Vanjaram chip, and the Intel Iris Xe Graphics 80EU Mobile, an integrated graphics processor based on the Generation 12.2 architecture with the Raptor Lake chip.

Q: How do the shading unit counts compare between the two?

A: The AMD Instinct MI325X has 19,456 shading units, while the Intel Iris Xe Graphics 80EU Mobile has 640 shading units. The AMD part also carries 1,216 texture mapping units versus 40 on the Intel part, and the Intel chip has 20 render output units while the AMD accelerator reports 0.

Q: What memory configurations do these GPUs use?

A: The AMD Instinct MI325X uses 256 GB of HBM3e memory with an 8192-bit bus and 6.14 TB/s bandwidth. The Intel Iris Xe Graphics 80EU Mobile uses System Shared memory, with System Shared bus width and System Dependent bandwidth, meaning its memory performance depends on the host platform.

Q: What are the clock speeds of each GPU?

A: The AMD Instinct MI325X runs at a 1000 MHz base clock and 2100 MHz boost clock, with memory at 1500 MHz (6 Gbps effective). The Intel Iris Xe Graphics 80EU Mobile runs at a 300 MHz base clock and 1450 MHz boost clock.

Q: What is the power consumption of each?

A: The AMD Instinct MI325X has a TDP of 1000 W and a suggested PSU of 1400 W. The Intel Iris Xe Graphics 80EU Mobile has a TDP of 15 W.

Q: Which GPU supports DirectX, OpenGL, and Vulkan?

A: The Intel Iris Xe Graphics 80EU Mobile supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4. The AMD Instinct MI325X lists N/A for DirectX, OpenGL, and Vulkan, indicating it is not oriented toward standard graphics API workloads.

Where Each One Wins

The AMD Instinct MI325X is built for compute density. Its FP32 throughput of 81.72 TFLOPS and FP16 throughput of 81.72 TFLOPS (1:1) place it in an entirely different performance class than the Intel part. The texture rate of 2,553.6 GTexel/s reflects massive parallel processing capacity. The 256 GB HBM3e memory pool with 6.14 TB/s bandwidth is designed for large-scale data residency. The pixel rate of 0 MPixel/s and lack of display outputs confirm this is not a rendering or display device.

The Intel Iris Xe Graphics 80EU Mobile wins in integration practicality. It is an IGP with a 15 W TDP, fits in portable devices, and provides display outputs dependent on the portable device. It supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4, making it suitable for standard graphics API workloads. Its pixel rate of 29.00 GPixel/s and texture rate of 58.00 GTexel/s are modest but functional for integrated graphics. The production status is Active, and the bus interface is Ring Bus, typical for integrated solutions.

The AMD part has no direct display output, no graphics API support, and a 1000 W TDP. The Intel part has a 15 W TDP, active production status, and successor named Arc Graphics-M. The data indicates a clean split: the AMD accelerator dominates compute and memory capacity, while the Intel IGP dominates power efficiency and graphics API compatibility.

Architecture Differences

The AMD Instinct MI325X uses the CDNA 3.0 architecture, manufactured on a 5 nm process at TSMC. The chip is named Aqua Vanjaram, containing 153,000 million transistors on a 1017 mm² die. The transistor density is 150.4M per mm². The Intel Iris Xe Graphics 80EU Mobile uses the Generation 12.2 architecture, manufactured on a 10 nm process at Intel, with the chip named Raptor Lake. The Intel part has no recorded transistor count, die size, or transistor density in the database.

The AMD accelerator reports 0 render output units and 0 MPixel/s pixel rate, indicating it does not perform traditional rasterization. The Intel IGP reports 20 render output units and a 29.00 GPixel/s pixel rate. The AMD part has 19,456 shading units and 1,216 TMUs, while the Intel part has 640 shading units and 40 TMUs.

The memory architecture differs fundamentally. The AMD part uses dedicated HBM3e memory with 256 GB capacity, 8192-bit bus width, and 6.14 TB/s bandwidth. The Intel part uses System Shared memory, meaning it shares system memory with the CPU, with bandwidth listed as System Dependent.

The AMD accelerator has no display outputs, while the Intel part has display outputs described as Portable Device Dependent. The AMD part is an OAM Module with no power connectors and a 1400 W suggested PSU. The Intel part is an IGP with a 15 W TDP and Ring Bus interface.

FP16 performance also differs in ratio. The AMD part achieves FP16 at 81.72 TFLOPS with a 1:1 ratio to FP32. The Intel part achieves FP16 at 3.712 TFLOPS with a 2:1 ratio to FP32, meaning its FP16 rate is double its FP32 rate.

Specification Differences

The AMD Instinct MI325X and Intel Iris Xe Graphics 80EU Mobile differ across nearly every recorded specification.

Process node: AMD uses 5 nm at TSMC; Intel uses 10 nm at Intel.

Transistors: AMD has 153,000 million; Intel has none recorded.

Die size: AMD has 1017 mm²; Intel has none recorded.

Base clock: AMD at 1000 MHz; Intel at 300 MHz.

Boost clock: AMD at 2100 MHz; Intel at 1450 MHz.

Memory clock: AMD at 1500 MHz (6 Gbps effective); Intel at System Shared.

Memory size: AMD at 256 GB; Intel at System Shared.

Memory type: AMD at HBM3e; Intel at System Shared.

Memory bus width: AMD at 8192 bit; Intel at System Shared.

Memory bandwidth: AMD at 6.14 TB/s; Intel at System Dependent.

Shading units: AMD at 19,456; Intel at 640.

TMUs: AMD at 1,216; Intel at 40.

ROPs: AMD at 0; Intel at 20.

Pixel rate: AMD at 0 MPixel/s; Intel at 29.00 GPixel/s.

Texture rate: AMD at 2,553.6 GTexel/s; Intel at 58.00 GTexel/s.

FP32: AMD at 81.72 TFLOPS; Intel at 1.856 TFLOPS.

FP16: AMD at 81.72 TFLOPS (1:1); Intel at 3.712 TFLOPS (2:1).

TDP: AMD at 1000 W; Intel at 15 W.

Slot width: AMD at OAM Module; Intel at IGP.

Power connectors: AMD at None; Intel has none recorded.

Suggested PSU: AMD at 1400 W; Intel has none recorded.

Bus interface: AMD at PCIe 5.0 x16; Intel at Ring Bus.

Display outputs: AMD at No outputs; Intel at Portable Device Dependent.

DirectX: AMD at N/A; Intel at 12 (12_1).

OpenGL: AMD at N/A; Intel at 4.6.

Vulkan: AMD at N/A; Intel at 1.4.

Production status: AMD has none recorded; Intel at Active.

Release date: AMD at 2024-10-09; Intel at 2023-01-03.

Predecessor: AMD at Radeon Instinct; Intel has none recorded.

Successor: AMD has none recorded; Intel at Arc Graphics-M.

Head-to-Head Benchmarks

The database contains no recorded head-to-head benchmark entries for these two GPUs, and neither has an average benchmark score. Both are recorded at the 50th percentile versus all GPUs. The comparison therefore relies on the specification data recorded in the database.

The largest computed gap is in FP32 throughput. The AMD Instinct MI325X delivers 81.72 TFLOPS, which is 44.0 times the 1.856 TFLOPS of the Intel Iris Xe Graphics 80EU Mobile. In FP16, the AMD part delivers 81.72 TFLOPS, which is 22.0 times the 3.712 TFLOPS of the Intel part. The AMD part maintains a 1:1 FP16 to FP32 ratio, while the Intel part uses a 2:1 ratio.

Texture rate shows a similar scale of difference. The AMD part records 2,553.6 GTexel/s, which is 44.0 times the 58.00 GTexel/s of the Intel part. The pixel rate reverses in favor of the Intel part: 29.00 GPixel/s versus 0 MPixel/s, since the AMD accelerator performs no rasterization.

Memory capacity differs by a factor of 256 GB versus System Shared. Memory bandwidth differs by 6.14 TB/s versus System Dependent. The AMD part has 19,456 shading units versus 640, a 30.4 times difference. The AMD part has 1,216 TMUs versus 40, a 30.4 times difference. The Intel part has 20 ROPs versus 0.

Clock speeds favor the AMD part at boost: 2100 MHz versus 1450 MHz, a 1.45 times difference. At base clock, the AMD part runs at 1000 MHz versus 300 MHz, a 3.33 times difference.

Power draw is recorded at 1000 W for the AMD part versus 15 W for the Intel part, a 66.7 times difference. This places the AMD accelerator firmly in the data center accelerator category and the Intel part in the mobile integrated graphics category.

The release dates are separated by roughly nine months, with the AMD part released on 2024-10-09 and the Intel part on 2023-01-03.

The Verdict

The recorded data shows two products with no overlap in intended use. The AMD Instinct MI325X is a 1000 W OAM module with no display outputs and no graphics API support. It provides 81.72 TFLOPS of FP32, 256 GB of HBM3e memory, 6.14 TB/s bandwidth, and a PCIe 5.0 x16 interface. The Intel Iris Xe Graphics 80EU Mobile is a 15 W IGP with display outputs, DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4 support, and a Ring Bus interface.

The AMD part wins every compute and memory specification by wide margins. The Intel part wins power efficiency, graphics API compatibility, and pixel rate. The Intel part also has an active production status and a named successor, Arc Graphics-M, while the AMD part has no recorded production status and no successor.

The data indicates the AMD Instinct MI325X is for workloads requiring maximum FP32 or FP16 throughput and large memory residency, such as data center compute tasks. The Intel Iris Xe Graphics 80EU Mobile is for portable devices needing integrated graphics with standard API support and low power draw. Neither product substitutes for the other, and the specification sheet makes the boundary clear.