AMD Radeon Instinct MI308X vs Intel Arc G3 Extreme Comparison

The Verdict

The recorded data presents two fundamentally different products that share almost no common ground beyond their GPU classification. The AMD Radeon Instinct MI308X is a data center compute accelerator built on CDNA 3.0 architecture, while the Intel Arc G3 Extreme is an integrated graphics processor within Intel's Panther Lake mobile platform. The database shows both products at the 50th percentile against all GPUs, with average benchmark scores of zero for each, meaning there are no recorded performance measurements to differentiate them empirically. The AMD part delivers 81.72 TFLOPS of FP32 compute and 653.7 TFLOPS of FP16 performance, while the Intel part delivers 7.680 TFLOPS FP32 and 15.36 TFLOPS FP16. The MI308X clearly targets compute-intensive workloads with its 192 GB HBM3 memory and 10.3 TB/s bandwidth, whereas the Arc G3 Extreme uses system shared memory with system dependent bandwidth, indicating a completely different use case. The data suggests the MI308X is for professional compute environments, while the Arc G3 Extreme serves as an integrated solution for mobile devices.

Where Each One Wins

The AMD Radeon Instinct MI308X wins in raw compute throughput by a substantial margin. Its FP32 performance of 81.72 TFLOPS exceeds the Intel Arc G3 Extreme's 7.680 TFLOPS by a factor of roughly ten. In FP16 compute, the MI308X delivers 653.7 TFLOPS, which is over forty times the Arc G3 Extreme's 15.36 TFLOPS. The MI308X also dominates in memory capacity with 192 GB of HBM3 compared to the Arc G3 Extreme's system shared memory. Memory bandwidth tells a similar story: 10.3 TB/s for the AMD part versus system dependent bandwidth for the Intel part. The AMD accelerator uses a 8192 bit memory bus, while the Intel IGP relies on shared system resources.

The Intel Arc G3 Extreme wins in areas relevant to mobile integration. Its thermal design power of 80 W compared to 750 W for the AMD part indicates dramatically lower power consumption. The Intel part includes 12 ray tracing cores, while the AMD part lists no ray tracing cores in the database. The Arc G3 Extreme supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, whereas the MI308X has no API support listed. The Intel IGP also provides display outputs that are portable device dependent, while the AMD accelerator has no outputs at all. The Arc G3 Extreme produces 60.00 GPixel/s pixel fill rate, while the MI308X records 0 MPixel/s, confirming the AMD part is not designed for rasterization tasks.

Architecture Differences

The AMD Radeon Instinct MI308X uses the Aqua Vanjaram chip built on a 5 nm TSMC process with 153,000 million transistors on a 1017 mm² die, resulting in a transistor density of 150.4M per mm². The architecture is CDNA 3.0, which is AMD's compute-oriented design lineage. The Intel Arc G3 Extreme uses the Panther Lake chip on Intel's 3 nm process, though transistor count and die size are listed as unknown in the database. The architecture is Xe3-LPG, which represents Intel's low-power graphics architecture for integrated solutions. The AMD chip has 19,456 shading units and 1,216 texture mapping units, while the Intel chip has 1,536 shading units and 48 TMUs. The AMD part lists zero ROPs, while the Intel part has 24 ROPs. The MI308X has no ray tracing cores listed, but the Arc G3 Extreme includes 12. Neither part lists tensor cores in the database.

Clock behavior differs substantially between the two. The AMD accelerator has a base clock of 1000 MHz and a boost clock of 2100 MHz, with memory clocked at 2525 MHz or 10.1 Gbps effective. The Intel IGP has a base clock of 300 MHz and a boost clock of 2500 MHz. The AMD part's memory operates at 10.3 TB/s bandwidth across an 8192 bit bus. The Intel part uses system shared memory with system dependent bandwidth, meaning its performance scales with the host system's memory configuration. The MI308X has a texture rate of 2,553.6 GTexel/s, while the Arc G3 Extreme manages 120.0 GTexel/s. The pixel rate for the AMD part is 0 MPixel/s, while the Intel part achieves 60.00 GPixel/s.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The AMD Radeon Instinct MI308X delivers 81.72 TFLOPS FP32, which is more than ten times the Intel Arc G3 Extreme's 7.680 TFLOPS.

Q: What memory configurations do these GPUs use?

A: The AMD MI308X uses 192 GB of HBM3 with an 8192 bit bus and 10.3 TB/s bandwidth. The Intel Arc G3 Extreme uses system shared memory with system dependent bandwidth.

Q: Do both GPUs support ray tracing?

A: The Intel Arc G3 Extreme includes 12 ray tracing cores, while the AMD MI308X lists no ray tracing cores in the database.

Q: What are the power requirements for each GPU?

A: The AMD MI308X has a TDP of 750 W and suggests a 1150 W power supply. The Intel Arc G3 Extreme has a TDP of 80 W and lists no suggested PSU.

Q: Which GPU has a faster boost clock?

A: The Intel Arc G3 Extreme boosts to 2500 MHz, which is higher than the AMD MI308X's boost clock of 2100 MHz.

Q: What form factors do these GPUs use?

A: The AMD MI308X uses an OAM Module slot width with no power connectors and a PCIe 5.0 x16 bus interface. The Intel Arc G3 Extreme is an IGP with no power connectors and an IGP bus interface.

Head-to-Head Benchmarks

The database contains no recorded head-to-head benchmark results between these two GPUs. The wins count for each side is zero, and the head-to-head benchmark array is empty. Both products sit at the 50th percentile against all GPUs, and both have average benchmark scores of zero. The absence of measured performance data means any comparison must rely on the specification differences recorded in the database.

The most significant numerical gap appears in FP16 compute. The AMD MI308X delivers 653.7 TFLOPS with an 8:1 ratio, while the Intel Arc G3 Extreme provides 15.36 TFLOPS with a 2:1 ratio. This represents a difference of roughly 42 times in favor of the AMD part. In FP32, the gap is about 10.6 times. Texture rate shows the AMD part at 2,553.6 GTexel/s versus 120.0 GTexel/s for the Intel part, a difference of over 21 times. The pixel rate comparison is reversed: the Intel part achieves 60.00 GPixel/s while the AMD part records 0 MPixel/s.

Memory capacity separates the two by an enormous margin. The AMD MI308X has 192 GB of dedicated HBM3 memory, while the Intel Arc G3 Extreme shares system memory with no dedicated allocation. The memory bus width of 8192 bits for the AMD part enables its 10.3 TB/s bandwidth, a figure the Intel part cannot match since its bandwidth is system dependent. The shading unit count also differs greatly: 19,456 for AMD versus 1,536 for Intel.

Clock speeds tell a nuanced story. The Intel Arc G3 Extreme has a higher boost clock at 2500 MHz compared to 2100 MHz for the AMD MI308X. However, the AMD part has a much higher base clock at 1000 MHz versus 300 MHz for the Intel part. The AMD memory clock of 2525 MHz translates to 10.1 Gbps effective, while the Intel part's memory clock is listed as system shared.

Specification Differences

The two GPUs differ across nearly every recorded specification field. The AMD Radeon Instinct MI308X uses the Aqua Vanjaram chip with CDNA 3.0 architecture, while the Intel Arc G3 Extreme uses Panther Lake with Xe3-LPG architecture. Manufacturing processes differ: TSMC 5 nm for AMD versus Intel 3 nm for Intel. The AMD chip contains 153,000 million transistors on a 1017 mm² die with 150.4M transistors per mm² density. The Intel chip's transistor count and die size are unknown.

Shading units number 19,456 for AMD versus 1,536 for Intel. Texture mapping units are 1,216 for AMD versus 48 for Intel. The AMD part has 0 ROPs, while the Intel part has 24. Ray tracing cores are absent from the AMD listing but present at 12 for Intel. Neither part lists tensor cores. The AMD part records a pixel rate of 0 MPixel/s, while the Intel part achieves 60.00 GPixel/s. Texture rates are 2,553.6 GTexel/s for AMD and 120.0 GTexel/s for Intel.

Memory configurations diverge completely. The AMD part has 192 GB of HBM3 with an 8192 bit bus and 10.3 TB/s bandwidth. The Intel part uses system shared memory with system dependent bandwidth. Memory clocks are 2525 MHz or 10.1 Gbps effective for AMD, while Intel's is system shared. Power consumption differs by nearly an order of magnitude: 750 W TDP for AMD with a suggested 1150 W PSU, versus 80 W TDP for Intel with no suggested PSU listed.

Form factors are incompatible. The AMD part uses an OAM Module slot width with a PCIe 5.0 x16 bus interface and no power connectors. The Intel part is an IGP with an IGP bus interface and no power connectors. Display outputs are absent for AMD, while Intel lists portable device dependent outputs. API support is null for AMD, while Intel supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Release dates place these products in different eras. The AMD MI308X was released on December 5, 2023, while the Intel Arc G3 Extreme has a release date of May 31, 2026. Production status is not listed for AMD, while Intel is marked as active. The AMD part has a predecessor listed as FirePro Data Center, while the Intel part has no predecessor. Neither part has a successor listed.