AMD Instinct MI350X vs Intel Arc G3 Comparison

# FAQ

Q: What are the core architectural identities of the AMD Instinct MI350X and Intel Arc G3?

A: The AMD Instinct MI350X is built on the CDNA 4.0 architecture with the MI350 256CU chip, while the Intel Arc G3 uses the Xe3-LPG architecture with the Panther Lake chip. Both are fabricated on a 3 nm process, but AMD uses TSMC as the foundry, and Intel uses its own foundry.

Q: How do the memory subsystems differ between the two?

A: The MI350X features 288 GB of HBM3e memory on an 8192-bit bus, delivering 8.19 TB/s of bandwidth. The Arc G3 uses System Shared memory with System Dependent bandwidth, meaning its memory performance is tied to the host system.

Q: Which device has higher raw compute throughput?

A: The MI350X delivers 72.09 TFLOPS for both FP32 and FP16 (1:1), while the Arc G3 provides 6.144 TFLOPS FP32 and 12.29 TFLOPS FP16 (2:1). The MI350X is roughly 11.7 times higher in FP32 throughput.

Q: What is the power envelope difference?

A: The MI350X has a TDP of 1000 W with a suggested PSU of 1400 W, while the Arc G3 has a TDP of 25 W. The MI350X is an OAM Module with no power connectors, and the Arc G3 is an IGP.

Q: Do both devices support standard graphics APIs?

A: No. The MI350X has no display outputs and lists DirectX, OpenGL, and Vulkan as N/A. The Arc G3 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What are the release timelines?

A: The MI350X has a release date of June 11, 2025, and the Arc G3 has a release date of May 31, 2026. The Arc G3 is listed as Active in production status.

Architecture Differences

The AMD Instinct MI350X and Intel Arc G3 represent opposite ends of the hardware spectrum. The MI350X uses the CDNA 4.0 architecture, a compute-optimized design with the MI350 256CU chip. The Arc G3 uses Xe3-LPG, a graphics-oriented architecture in the Arc Graphics-M (Panther Lake) generation. Both share a 3 nm process node, but the foundry differs: TSMC for AMD, Intel for Intel.

The transistor counts reveal a massive difference in complexity. The MI350X packs 185,000 million transistors on a 2380 mm² die, yielding a transistor density of 77.7M per mm². The Arc G3's transistor count and die size are listed as unknown. This scale difference is reflected in the shading units: the MI350X has 16,384 shading units, 1,024 TMUs, and 0 ROPs. The Arc G3 has 1,280 shading units, 40 TMUs, 20 ROPs, and 10 ray tracing cores. The MI350X has no RT cores listed.

Clock behavior diverges sharply. The MI350X runs at a base clock of 1000 MHz and boosts to 2200 MHz. The Arc G3 starts at 300 MHz base and boosts to 2400 MHz. The Arc G3 reaches a higher boost frequency, but the MI350X operates from a much higher base. The MI350X memory clock is 2000 MHz with 8 Gbps effective, while the Arc G3 uses System Shared memory.

The API support is a fundamental architectural split. The MI350X has no graphics APIs and no display outputs. The Arc G3 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI350X is a pure compute accelerator, while the Arc G3 is an integrated graphics processor.

Power delivery and form factor reinforce this divide. The MI350X is an OAM Module, 1000 W TDP, with a 1400 W suggested PSU and no power connectors. The Arc G3 is an IGP, 25 W TDP, with no power connectors and no suggested PSU listed. The MI350X dimensions are 102 mm by 165 mm, while the Arc G3 has no listed dimensions.

Where Each One Wins

The recorded data places these devices in different application domains. The MI350X wins in raw compute throughput, memory capacity, and memory bandwidth. Its 72.09 TFLOPS FP32 and FP16 (1:1) performance, 288 GB HBM3e, and 8.19 TB/s bandwidth position it for large-scale data processing. The texture rate of 2,252.8 GTexel/s and pixel rate of 0 MPixel/s confirm its non-rendering focus.

The Arc G3 wins in graphics features and power efficiency. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, enabling standard graphics workloads. Its pixel rate is 48.00 GPixel/s and texture rate is 96.00 GTexel/s. The 25 W TDP versus 1000 W means the Arc G3 consumes 975 W less at maximum. The Arc G3 also has 10 ray tracing cores, which the MI350X lacks.

The Arc G3's 2:1 FP16 ratio (12.29 TFLOPS) versus the MI350X's 1:1 ratio (72.09 TFLOPS) shows different compute strategies. The MI350X dedicates equal throughput to FP32 and FP16, while the Arc G3 doubles FP16 performance relative to FP32. This suggests the MI350X targets FP32-heavy workloads, and the Arc G3 accelerates FP16 operations.

The MI350X's 8192-bit memory bus is an extreme design for bandwidth-intensive tasks. The Arc G3's System Shared memory means it relies on the host's memory, with System Dependent bandwidth. For applications requiring massive data movement, the MI350X wins decisively. For portable or integrated systems, the Arc G3's IGP form factor and display outputs win.

Specification Differences

The two devices differ in nearly every measurable specification. The process node is identical at 3 nm, but the foundry differs: TSMC for the MI350X, Intel for the Arc G3. The MI350X has 185,000 million transistors on a 2380 mm² die; the Arc G3 has unknown figures for both.

Clock speeds: MI350X base 1000 MHz, boost 2200 MHz. Arc G3 base 300 MHz, boost 2400 MHz. Memory clocks: MI350X 2000 MHz with 8 Gbps effective; Arc G3 System Shared.

Memory: MI350X 288 GB HBM3e, 8192-bit bus, 8.19 TB/s bandwidth. Arc G3 System Shared size, type, bus width, and System Dependent bandwidth.

Compute units: MI350X 16,384 shading units, 1,024 TMUs, 0 ROPs, no RT cores. Arc G3 1,280 shading units, 40 TMUs, 20 ROPs, 10 RT cores.

Pixel and texture rates: MI350X 0 MPixel/s, 2,252.8 GTexel/s. Arc G3 48.00 GPixel/s, 96.00 GTexel/s.

FP performance: MI350X 72.09 TFLOPS FP32, 72.09 TFLOPS FP16 (1:1). Arc G3 6.144 TFLOPS FP32, 12.29 TFLOPS FP16 (2:1).

Power: MI350X 1000 W TDP, 1400 W suggested PSU. Arc G3 25 W TDP, no suggested PSU.

Form factor: MI350X OAM Module, PCIe 5.0 x16 bus, no display outputs, dimensions 102 mm by 165 mm. Arc G3 IGP, IGP bus, Portable Device Dependent display outputs, no dimensions listed.

APIs: MI350X N/A for DirectX, OpenGL, Vulkan. Arc G3 DirectX 12 Ultimate (12_2), OpenGL 4.6, Vulkan 1.4.

Production status: MI350X not listed, Arc G3 Active. Release dates: MI350X June 11, 2025; Arc G3 May 31, 2026. Predecessor: MI350X has Radeon Instinct, Arc G3 has none.

Head-to-Head Benchmarks

The head-to-head benchmark data is empty, so direct measured comparisons are not available. The analysis must rely on the specification-level figures recorded in the database.

The largest single-spec win for the MI350X is FP32 throughput. At 72.09 TFLOPS versus 6.144 TFLOPS, the MI350X delivers 65.946 TFLOPS more, which is approximately 11.7 times the Arc G3's FP32 output. This is the dominant compute gap between the two.

Memory bandwidth shows another massive margin. The MI350X provides 8.19 TB/s, while the Arc G3's bandwidth is System Dependent, meaning it cannot be fixed as a number. The 288 GB capacity versus System Shared size reinforces this advantage. The 8192-bit bus width versus System Shared bus width cannot be expressed as a delta, but the MI350X's dedicated HBM3e is a structural advantage.

The Arc G3 counters in pixel rate. Its 48.00 GPixel/s versus the MI350X's 0 MPixel/s is a complete win, as the MI350X has no pixel output capability. The texture rate tells a different story: MI350X at 2,252.8 GTexel/s versus 96.00 GTexel/s is a 2,156.8 GTexel/s advantage for AMD, approximately 23.5 times higher.

FP16 is notable: MI350X 72.09 TFLOPS (1:1) versus Arc G3 12.29 TFLOPS (2:1). The MI350X is 59.8 TFLOPS higher, roughly 5.9 times the Arc G3's FP16 throughput. The ratio difference (1:1 versus 2:1) indicates the MI350X maintains full FP16 rate relative to FP32, while the Arc G3 doubles FP16 from its FP32 base.

Clock boost favors the Arc G3 by 200 MHz: 2400 MHz versus 2200 MHz. Base clock favors the MI350X by 700 MHz: 1000 MHz versus 300 MHz. The power difference is stark: 1000 W versus 25 W, a 975 W gap. The suggested PSU of 1400 W for the MI350X versus none for the Arc G3 underscores the system-level requirements.

The MI350X has 16,384 shading units versus 1,280, a difference of 15,104. TMUs: 1,024 versus 40, a difference of 984. ROPs: 0 versus 20, favoring Intel by 20. RT cores: 0 versus 10, favoring Intel by 10.

The Verdict

The data points to two distinct use cases. The AMD Instinct MI350X is a compute accelerator with no graphics outputs. Its 72.09 TFLOPS FP32, 288 GB HBM3e, and 8.19 TB/s bandwidth target memory-intensive and compute-heavy workloads. The 1000 W TDP and OAM Module form factor require a server-class platform. The absence of DirectX, OpenGL, and Vulkan support means it cannot render graphics.

The Intel Arc G3 is an integrated graphics processor. Its 25 W TDP and IGP form factor fit portable devices. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and has display outputs. The 48.00 GPixel/s pixel rate and 10 RT cores enable standard graphics and ray tracing workloads. The System Shared memory keeps the design simple but ties performance to the host.

The MI350X wins every compute and memory specification. The Arc G3 wins every graphics and efficiency specification. The percentileVsAllGpus field is 50 for both, and avgBenchmarkScore is 0 for both, so the database shows no measured performance ranking. The release dates differ by nearly a year: June 11, 2025 for the MI350X, May 31, 2026 for the Arc G3.

The MI350X is the choice for FP32 or FP16 compute at scale, with 11.7 times the FP32 throughput and 5.9 times the FP16 throughput. The Arc G3 is the choice for graphics, ray tracing, and low-power integration, with 20 ROPs and 10 RT cores where the MI350X has zero. The 975 W power gap makes the Arc G3 viable in battery-powered systems, while the MI350X demands a 1400 W suggested PSU.

The two devices do not compete. The database shows no head-to-head benchmarks, and the specification differences are so fundamental that a direct comparison only highlights their separate purposes. The MI350X is an accelerator without display outputs; the Arc G3 is a graphics processor without dedicated memory. The recorded data supports no other conclusion.