AMD Instinct MI308X vs Intel Arc G3 Comparison

FAQ

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

A: The comparison is between the AMD Instinct MI308X, an OAM module accelerator built for compute workloads, and the Intel Arc G3, an integrated graphics processor (IGP) designed for mobile devices within the Arc Graphics-M (Panther Lake) generation.

Q: Which processor has the higher boost clock speed?

A: The Intel Arc G3 has a boost clock of 2400 MHz, which is higher than the AMD Instinct MI308X's boost clock of 2100 MHz.

Q: What is the difference in FP32 floating-point performance between the two?

A: The AMD Instinct MI308X delivers 81.72 TFLOPS of FP32 performance, while the Intel Arc G3 delivers 6.144 TFLOPS. The AMD part is over 13 times faster in this metric.

Q: Which processor has more shading units?

A: The AMD Instinct MI308X has 19,456 shading units, whereas the Intel Arc G3 has 1,280 shading units. The AMD accelerator has more than 15 times the shading units of the Intel IGP.

Q: How do the memory configurations differ?

A: The AMD Instinct MI308X uses 192 GB of HBM3 memory with an 8192-bit bus and 5.32 TB/s of bandwidth. The Intel Arc G3 uses system shared memory with a system-dependent bandwidth.

Q: What is the thermal design power (TDP) of each chip?

A: The AMD Instinct MI308X has a TDP of 750 W, while the Intel Arc G3 has a TDP of 25 W. The AMD accelerator consumes 30 times the power of the Intel integrated part.

Architecture Differences

The AMD Instinct MI308X is built on the CDNA 3.0 architecture, which is specifically optimized for compute acceleration rather than graphics output. This is reflected in the chip's 5 nm process node at TSMC, a transistor count of 153,000 million, and a die size of 1017 mm². The chip, codenamed Aqua Vanjaram, is part of the Instinct (MIx) generation. The architecture is designed for high-throughput parallel computation, evidenced by its 19,456 shading units, 1,216 TMUs, and zero ROPs. The absence of ROPs and display outputs confirms that this is not a graphics-oriented product. The memory subsystem uses HBM3 with 192 GB capacity, an 8192-bit bus, and a bandwidth of 5.32 TB/s, which supports its FP32 and FP16 performance of 81.72 TFLOPS each, running at a 1:1 ratio.

The Intel Arc G3, in contrast, is an integrated graphics processor built on the Xe3-LPG architecture within the Arc Graphics-M (Panther Lake) generation. It is manufactured on Intel's 3 nm process. The chip has 1,280 shading units, 40 TMUs, and 20 ROPs, and it includes 10 ray tracing cores. The memory interface is system shared, meaning the GPU relies on the host system's memory rather than dedicated VRAM. The Arc G3 has a base clock of 300 MHz and a boost clock of 2400 MHz. Its FP32 performance is 6.144 TFLOPS, and its FP16 performance is 12.29 TFLOPS at a 2:1 ratio, which indicates that it processes two FP16 operations per FP32 operation, a design more typical of graphics and consumer workloads. The Arc G3 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, while the AMD part lists N/A for all graphics APIs.

The AMD part uses a PCIe 5.0 x16 bus interface and is an OAM Module with no power connectors, requiring a suggested PSU of 1150 W. The Intel part uses an IGP bus interface, has no power connectors, and is described as a portable device dependent display output. The Intel part is marked as Active in production status, with a release date of 2026-05-31, whereas the AMD part has a release date of 2023-12-05 and no production status listed.

Head-to-Head Benchmarks

The recorded data contains no direct head-to-head benchmark entries, and both parts have an average benchmark score of zero with a percentile rank of 50 among all GPUs. However, the specification data allows for a direct comparison of theoretical compute capabilities, which is the primary basis for evaluating these two very different products.

The AMD Instinct MI308X leads in raw compute throughput. Its FP32 rating of 81.72 TFLOPS is more than 13 times the 6.144 TFLOPS of the Intel Arc G3. In FP16, the AMD part again leads with 81.72 TFLOPS compared to the Intel Arc G3's 12.29 TFLOPS, a margin of roughly 6.6 times. The AMD part's texture rate is 2,553.6 GTexel/s versus 96.00 GTexel/s for the Intel part, a difference of more than 26 times. This is consistent with the AMD part's 1,216 TMUs versus the Intel part's 40 TMUs.

The Intel Arc G3 wins in pixel throughput. Its pixel rate is 48.00 GPixel/s, while the AMD Instinct MI308X is rated at 0 MPixel/s. This is because the AMD accelerator has no ROPs and no display outputs; it is not designed to rasterize graphics. The Intel part's 20 ROPs enable it to handle graphics output, and its display outputs are described as portable device dependent, meaning it is meant for integrated use in laptops or similar devices.

In terms of clock speeds, the Intel Arc G3 has a higher boost clock of 2400 MHz compared to the AMD part's 2100 MHz. However, the AMD part's base clock of 1000 MHz is higher than the Intel part's 300 MHz base clock. The AMD part also has a dedicated memory clock of 1300 MHz with 5.2 Gbps effective data rate, while the Intel part's memory clock is system shared and its bandwidth is system dependent.

The transistor density of the AMD part is 150.4M per mm², derived from its 153,000 million transistors on a 1017 mm² die. The Intel part's transistor count and die size are unknown, so no density comparison is possible. The AMD part uses a 5 nm TSMC process, while the Intel part uses a 3 nm Intel process, which indicates a more advanced manufacturing node for the Intel part, but the AMD part's larger die and higher transistor count give it a substantial compute advantage.

Specification Differences

The two processors differ in nearly every major specification category. The AMD Instinct MI308X uses the CDNA 3.0 architecture, while the Intel Arc G3 uses Xe3-LPG. The process nodes are 5 nm (TSMC) for AMD and 3 nm (Intel) for Intel. The AMD part has 153,000 million transistors on a 1017 mm² die, while the Intel part's transistor count and die size are unknown.

Memory is a major differentiator. The AMD part has 192 GB of HBM3 memory with an 8192-bit bus and 5.32 TB/s bandwidth. The Intel part has system shared memory, with system shared type, bus width, and system dependent bandwidth. The AMD part's memory clock is 1300 MHz with 5.2 Gbps effective, while the Intel part's memory clock is system shared.

Shading units differ dramatically: 19,456 on the AMD part versus 1,280 on the Intel part. TMUs are 1,216 versus 40. ROPs are 0 versus 20. The Intel part has 10 ray tracing cores, while the AMD part has none listed. Pixel rate is 0 MPixel/s on the AMD part versus 48.00 GPixel/s on the Intel part. Texture rate is 2,553.6 GTexel/s versus 96.00 GTexel/s. FP32 is 81.72 TFLOPS versus 6.144 TFLOPS. FP16 is 81.72 TFLOPS (1:1) versus 12.29 TFLOPS (2:1).

TDP is 750 W for the AMD part versus 25 W for the Intel part. The AMD part is an OAM Module, while the Intel part is an IGP. Both have no power connectors, but the AMD part has a suggested PSU of 1150 W, which the Intel part does not list. Bus interface is PCIe 5.0 x16 for AMD versus IGP for Intel. Display outputs are none for AMD versus portable device dependent for Intel. API support differs: the AMD part lists N/A for DirectX, OpenGL, and Vulkan, while the Intel part supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Release dates are 2023-12-05 for AMD and 2026-05-31 for Intel. The Intel part has a production status of Active, while the AMD part has none listed. Neither part has a listed launch MSRP.

Where Each One Wins

The AMD Instinct MI308X is the clear winner in compute-heavy workloads that rely on raw floating-point throughput. Its FP32 performance of 81.72 TFLOPS and FP16 performance of 81.72 TFLOPS at a 1:1 ratio make it suitable for scientific simulation, AI training, and other high-performance compute tasks. The 192 GB HBM3 memory with 5.32 TB/s of bandwidth provides a large, fast memory pool for large datasets. The texture rate of 2,553.6 GTexel/s and the high TMU count further support compute-heavy operations. This is a dedicated accelerator with no display outputs and no graphics API support, so its role is exclusively as a compute engine. The data shows it is designed for server or datacenter environments, as indicated by its OAM Module form factor, PCIe 5.0 x16 interface, and high TDP of 750 W.

The Intel Arc G3 wins in graphics and integrated usage scenarios. Its pixel rate of 48.00 GPixel/s and 20 ROPs enable it to rasterize graphics, which the AMD part cannot do at all. The inclusion of 10 ray tracing cores and support for DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4 means it can handle modern graphics APIs and real-time rendering. Its system shared memory model is typical of integrated GPUs, where the GPU does not have dedicated VRAM but uses the host's memory. The low TDP of 25 W and IGP form factor make it suitable for portable devices, with display outputs described as portable device dependent. The higher boost clock of 2400 MHz also indicates a design focused on bursty graphics workloads rather than sustained compute throughput.

In terms of clock behavior, the Intel part's base clock of 300 MHz is much lower than the AMD part's 1000 MHz, but the Intel part boosts to 2400 MHz, which is higher than the AMD part's 2100 MHz boost. The AMD part's higher base clock suggests a design that maintains high throughput consistently, while the Intel part's wide clock range is common for power-saving integrated graphics.

The AMD part has no ray tracing cores, no ROPs, and no graphics API support, so it is not useful for gaming or graphics output. Conversely, the Intel part has a fraction of the compute resources, with 1,280 shading units versus 19,456, and its FP32 throughput is only 6.144 TFLOPS, so it is not designed for heavy compute tasks. The data indicates a clear split: the AMD Instinct MI308X is for compute acceleration with no graphics capabilities, and the Intel Arc G3 is for integrated graphics with modest compute capabilities and a focus on power efficiency and portability. The release dates also place the AMD part in late 2023 and the Intel part in mid-2026, reflecting different product lifecycles and market positions.