AMD Instinct MI355X vs Intel Arc G3 Extreme Comparison

FAQ

Q: What are the core architectural families of the AMD Instinct MI355X and Intel Arc G3 Extreme?

A: The AMD Instinct MI355X is built on the CDNA 4.0 architecture with the MI350 256CU chip, while the Intel Arc G3 Extreme uses the Xe3-LPG architecture with the Panther Lake chip.

Q: How do the process nodes and foundries compare?

A: Both GPUs are fabricated on a 3 nm process node, but the AMD Instinct MI355X is produced by TSMC, whereas the Intel Arc G3 Extreme is produced by Intel's own foundry.

Q: What is the difference in memory configuration?

A: The AMD Instinct MI355X has 288 GB of HBM3e memory on an 8192 bit bus with 8.19 TB/s bandwidth. The Intel Arc G3 Extreme uses System Shared memory, with bandwidth described as System Dependent.

Q: Which GPU has a higher boost clock?

A: The Intel Arc G3 Extreme boosts to 2500 MHz, which is 100 MHz higher than the AMD Instinct MI355X's 2400 MHz boost clock.

Q: What are the API support differences?

A: The Intel Arc G3 Extreme supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The AMD Instinct MI355X lists N/A for DirectX, OpenGL, and Vulkan.

Q: What is the difference in power consumption?

A: The AMD Instinct MI355X has a TDP of 1400 W with a suggested PSU of 1800 W, while the Intel Arc G3 Extreme has a TDP of 80 W and no suggested PSU listed.

Where Each One Wins

The AMD Instinct MI355X is designed for compute-dense workloads. It delivers 78.64 TFLOPS of FP32 performance, which is more than ten times the 7.680 TFLOPS of the Intel Arc G3 Extreme. Its texture rate of 2,457.6 GTexel/s far exceeds the 120.0 GTexel/s of the Intel part. The MI355X also has 16,384 shading units versus 1,536 on the Intel chip, and 1,024 TMUs against 48. The 288 GB HBM3e memory pool with 8.19 TB/s bandwidth makes it suited for large data sets that would exceed the capacity of shared system memory.

The Intel Arc G3 Extreme wins in areas tied to its integrated nature and modern graphics API support. It has a higher boost clock at 2500 MHz versus 2400 MHz. It is the only one of the two with a pixel rate, 60.00 GPixel/s, while the MI355X is recorded at 0 MPixel/s. The Arc G3 Extreme also supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the MI355X has no graphics API entries. Its 80 W TDP makes it suitable for compact systems, as it is an IGP with no power connectors required. The MI355X, by contrast, is an OAM Module with a 1400 W TDP and an 1800 W suggested PSU. The Intel part also has 12 ray tracing cores, a feature absent from the MI355X data. The MI355X has 0 ROPs, while the Arc G3 Extreme has 24.

Architecture Differences

The AMD Instinct MI355X uses the CDNA 4.0 architecture, which is a compute-oriented design. It has 256 compute units in the MI350 chip, and the transistor count is 185,000 million across a die size of 2380 mm². The transistor density is 77.7M per mm². The Intel Arc G3 Extreme uses the Xe3-LPG architecture on the Panther Lake chip, with transistor count and die size listed as unknown. The MI355X has 16,384 shading units, 1,024 TMUs, and 0 ROPs, indicating a design that omits the traditional raster output stage. The Arc G3 Extreme has 1,536 shading units, 48 TMUs, and 24 ROPs, plus 12 ray tracing cores.

Memory architecture differs fundamentally. The MI355X uses 288 GB of HBM3e across an 8192 bit bus with 8.19 TB/s bandwidth. The Arc G3 Extreme uses System Shared memory, with the bus width and memory type also listed as System Shared. This means the Intel GPU depends on the host system's memory controller and RAM configuration, while the AMD GPU has dedicated high-bandwidth memory onboard.

Clock behavior also differs. The MI355X has a base clock of 1000 MHz and a boost of 2400 MHz. The Arc G3 Extreme has a much lower base clock of 300 MHz but a boost of 2500 MHz. This suggests the Intel part is designed to idle very low and ramp up, which is typical for integrated graphics. The MI355X has a memory clock of 2000 MHz with 8 Gbps effective data rate, while the Arc G3 Extreme's memory clock is tied to the system.

The MI355X has no display outputs, while the Arc G3 Extreme's display outputs are described as Portable Device Dependent. The MI355X uses a PCIe 5.0 x16 bus interface, whereas the Arc G3 Extreme uses an IGP bus interface. The MI355X is an OAM Module with dimensions of 102 mm length and 165 mm width, while the Arc G3 Extreme has no listed dimensions. The MI355X has no production status listed, and the Arc G3 Extreme is marked as Active.

Specification Differences

The two GPUs differ across nearly every specification field. The MI355X has 16,384 shading units against the Arc G3 Extreme's 1,536. TMU counts are 1,024 versus 48. ROP counts are 0 versus 24. The Arc G3 Extreme has 12 ray tracing cores, while the MI355X has none listed. FP32 compute is 78.64 TFLOPS versus 7.680 TFLOPS. FP16 is 78.64 TFLOPS at a 1:1 ratio for the MI355X, while the Arc G3 Extreme delivers 15.36 TFLOPS at a 2:1 ratio.

Texture rate is 2,457.6 GTexel/s for the MI355X versus 120.0 GTexel/s for the Arc G3 Extreme. Pixel rate is 0 MPixel/s for the MI355X versus 60.00 GPixel/s for the Intel part. Memory size, type, bus width, and bandwidth all differ: 288 GB HBM3e with 8192 bit bus and 8.19 TB/s versus System Shared in all fields. Base clocks are 1000 MHz versus 300 MHz, and boost clocks are 2400 MHz versus 2500 MHz.

Power specifications are dramatically different. The MI355X has a TDP of 1400 W, a suggested PSU of 1800 W, and no power connectors, since it uses an OAM Module slot. The Arc G3 Extreme has a TDP of 80 W, no power connectors, and no suggested PSU listed. The MI355X uses PCIe 5.0 x16, while the Arc G3 Extreme uses IGP. The MI355X has no display outputs, while the Arc G3 Extreme's outputs are Portable Device Dependent. API support is N/A for the MI355X, while the Arc G3 Extreme supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. Release dates are 2025-06-11 for the MI355X and 2026-05-31 for the Arc G3 Extreme. The MI355X's predecessor is Radeon Instinct, while the Arc G3 Extreme has no predecessor listed.

Head-to-Head Benchmarks

The recorded data shows no benchmark scores for either GPU, with both having an average benchmark score of 0 and a percentile rank of 50 against all GPUs. The head-to-head benchmark list is empty, and neither GPU records any wins. This means the comparison relies entirely on the specification-level data in the database.

The largest win for the AMD Instinct MI355X is in FP32 compute, where it delivers 78.64 TFLOPS, which is 10.24 times the 7.680 TFLOPS of the Intel Arc G3 Extreme. In texture rate, the MI355X achieves 2,457.6 GTexel/s, which is 20.48 times the 120.0 GTexel/s of the Intel part. Shading unit count favors AMD by a factor of 10.67, with 16,384 against 1,536. TMU count favors AMD by a factor of 21.33, with 1,024 against 48. The MI355X provides 288 GB of dedicated HBM3e memory with 8.19 TB/s bandwidth, whereas the Arc G3 Extreme relies on System Shared memory with System Dependent bandwidth.

The Intel Arc G3 Extreme wins in boost clock, reaching 2500 MHz versus 2400 MHz, a lead of 100 MHz. It also has a functional pixel pipeline with 60.00 GPixel/s and 24 ROPs, while the MI355X has 0 ROPs and a pixel rate of 0 MPixel/s. The Arc G3 Extreme's FP16 throughput of 15.36 TFLOPS is double its FP32 figure, reflecting a 2:1 ratio, while the MI355X runs FP16 at a 1:1 ratio. The Intel part has 12 ray tracing cores, which the MI355X does not list. The Arc G3 Extreme also has a much lower TDP of 80 W versus 1400 W, and it supports modern graphics APIs, while the MI355X lists N/A for all three.

In terms of transistor scale, the MI355X packs 185,000 million transistors into 2380 mm², while the Arc G3 Extreme's transistor count and die size are unknown. This makes a direct density comparison impossible from the recorded data. The MI355X's release date of 2025-06-11 precedes the Arc G3 Extreme's 2026-05-31 by roughly a year. The Arc G3 Extreme is marked as Active in production status, while the MI355X has no production status recorded.

The Verdict

The AMD Instinct MI355X is a dedicated accelerator with no display outputs and no graphics API entries. It targets compute workloads that need massive FP32 throughput, high texture rates, and a very large memory pool. The data shows 78.64 TFLOPS FP32, 2,457.6 GTexel/s, and 288 GB HBM3e with 8.19 TB/s bandwidth. Its 1400 W TDP and OAM Module form factor indicate a server or data center installation, not a desktop part. The absence of ROPs and pixel rate reinforces that this is not designed for rasterized graphics output.

The Intel Arc G3 Extreme is an integrated GPU on the Panther Lake chip with a 80 W TDP. It has a higher boost clock at 2500 MHz, 12 ray tracing cores, 24 ROPs, and a pixel rate of 60.00 GPixel/s. It supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, making it suitable for graphics rendering in a portable device. Its System Shared memory configuration means performance depends on the host system's memory bandwidth.

The recorded data does not include any benchmark scores or nearest rivals for either GPU. Both sit at the 50th percentile against all GPUs in the database. The comparison must therefore be read as a specification-level analysis. For compute-heavy tasks with large memory requirements, the MI355X is the clear choice based on its tenfold FP32 advantage, 20-fold texture rate advantage, and dedicated 288 GB HBM3e. For graphics rendering, ray tracing, and low-power integrated use, the Arc G3 Extreme has the relevant features, including API support, ROPs, and ray tracing cores. The MI355X has no graphics APIs, so it cannot be used for standard DirectX or Vulkan workloads. The Arc G3 Extreme has no dedicated VRAM, so it cannot match the MI355X's memory bandwidth or capacity for data-intensive compute. Each GPU addresses a different segment, and the specification differences align with those distinct purposes.