AMD Radeon 820M vs Intel Arc G3 Extreme Comparison

Head-to-Head Benchmarks

The recorded data contains no synthetic benchmark scores for either the AMD Radeon 820M or the Intel Arc G3 Extreme. Both entries show an empty benchmark array, zero recorded wins in head-to-head testing, and an identical percentile rank of 50 against all GPUs in the database. This means the comparison must be built entirely from the architectural and specification data provided, rather than from measured performance deltas.

What the data does reveal is a stark difference in raw compute throughput. The Intel Arc G3 Extreme delivers 7.680 TFLOPS of FP32 performance, while the AMD Radeon 820M produces 716.8 GFLOPS. That is a 10.7x advantage in raw floating-point horsepower for the Intel part, based strictly on the recorded figures. In FP16 compute, the gap widens further: Intel lists 15.36 TFLOPS with a 2:1 ratio, while AMD lists 716.8 GFLOPS with a 1:1 ratio, giving Intel a 21.4x lead in half-precision work.

Pixel and texture throughput follow the same pattern. The Intel Arc G3 Extreme sustains 60.00 GPixel/s and 120.0 GTexel/s, while the AMD Radeon 820M manages 11.20 GPixel/s and 22.40 GTexel/s. Intel holds a 5.4x advantage in pixel rate and a 5.4x advantage in texture rate. These ratios are consistent, indicating that the Intel part is not merely clocked higher but is structurally larger with more processing units across every stage of the pipeline.

Clock speeds tell a different story, however. The AMD Radeon 820M runs at a base clock of 400 MHz and boosts to 2800 MHz, while the Intel Arc G3 Extreme operates at a base of 300 MHz and boosts to 2500 MHz. The AMD part therefore has a 300 MHz higher base clock and a 300 MHz higher boost clock. Despite this clock disadvantage, Intel still achieves dramatically higher throughput because it deploys 1536 shading units versus AMD's 128, 48 texture mapping units versus AMD's 8, and 24 render output units versus AMD's 4. The architectural scaling overwhelms the clock speed deficit.

In ray tracing, Intel again leads with 12 RT cores against AMD's 2 RT cores. That is a 6x difference in dedicated ray tracing hardware. Neither part exposes tensor core counts in the database, so no comparison can be made on that front.

Architecture Differences

The two GPUs come from different foundries and process nodes. The AMD Radeon 820M is built on a 4 nm process at TSMC, while the Intel Arc G3 Extreme uses a 3 nm process at Intel. The smaller process node gives Intel a manufacturing advantage in transistor density, though the database does not record transistor counts or die sizes for either part, so the exact density gains cannot be quantified.

Architecturally, AMD uses RDNA 3.5, which the database classifies as part of the Navi III IGP generation for Strix Point Mobile. Intel uses Xe3-LPG, classified under Arc Graphics-M for Panther Lake. These are fundamentally different GPU architectures with different design goals. AMD's RDNA 3.5 is a mobile-focused integrated graphics design derived from the Radeon line, while Intel's Xe3-LPG is a low-power variant of the Arc graphics architecture aimed at integrated and compact systems.

The shading unit count is the most significant architectural divergence. AMD fields 128 shaders, while Intel fields 1536, a 12x difference. This is not a small incremental change; it represents a completely different class of integrated GPU. The texture mapping units follow suit at 8 versus 48, and render output units at 4 versus 24. These numbers indicate that Intel designed the Arc G3 Extreme for substantially higher fill rates and shader throughput than AMD's 820M.

Ray tracing hardware also differs sharply: 2 RT cores on the AMD part versus 12 on the Intel part. This suggests Intel's architecture devotes more die area to ray traversal and bounding volume hierarchy processing, which could translate into better performance in ray-traced workloads, provided the rest of the pipeline can feed those cores.

Memory and interface specifications are nearly identical in structure. Both use system-shared memory, meaning neither has dedicated VRAM. Both report system-dependent bandwidth. The bus interface differs: AMD connects via PCIe 4.0 x8, while Intel's is listed simply as "IGP," indicating an integrated implementation that does not use an external PCIe link.

Power delivery differs significantly. AMD lists a TDP of 15 W, while Intel lists 80 W. This is a 5.3x difference in thermal design power. Both are classified as IGP slot width with no power connectors, meaning both draw power from the host platform rather than external PCIe power cables. The higher power envelope for Intel is consistent with its larger shader count and higher throughput figures.

API support is identical: both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. This means software compatibility for modern titles should be equivalent at the API level, though actual driver behavior is outside the scope of the recorded data.

Release timing differs by over a year. The AMD Radeon 820M has a release date of 2025-02-28, while the Intel Arc G3 Extreme is dated 2026-05-31. The Intel part is therefore a newer design by about 15 months.

FAQ

Q: Which GPU has more shading units?

A: The Intel Arc G3 Extreme has 1536 shading units, while the AMD Radeon 820M has 128. Intel's count is 12x higher.

Q: How do the two compare in raw FP32 compute?

A: The Intel Arc G3 Extreme delivers 7.680 TFLOPS of FP32 performance, compared to 716.8 GFLOPS for the AMD Radeon 820M. Intel leads by a factor of 10.7x.

Q: Are both GPUs integrated or discrete?

A: Both are integrated graphics processors. Each is classified with an IGP slot width, and both use system-shared memory rather than dedicated VRAM.

Q: What is the power consumption difference?

A: The AMD Radeon 820M has a TDP of 15 W, while the Intel Arc G3 Extreme has a TDP of 80 W. Intel's part consumes 5.3x more power.

Q: Do the two support the same graphics APIs?

A: Yes, both list DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. API compatibility is identical.

Q: Which GPU has a higher boost clock?

A: The AMD Radeon 820M boosts to 2800 MHz, while the Intel Arc G3 Extreme boosts to 2500 MHz. AMD's boost clock is 300 MHz higher.

The Verdict

The data indicates that the Intel Arc G3 Extreme is the substantially more powerful part by every computational metric recorded. It leads in FP32 throughput by 10.7x, FP16 by 21.4x, pixel rate by 5.4x, texture rate by 5.4x, shading units by 12x, TMUs by 6x, ROPs by 6x, and RT cores by 6x. These are not marginal advantages; they represent a different performance tier entirely.

The AMD Radeon 820M counters with a lower TDP of 15 W versus Intel's 80 W, and higher clock speeds of 400 MHz base and 2800 MHz boost versus Intel's 300 MHz base and 2500 MHz boost. For systems where power draw is the primary constraint, the AMD part is the more efficient choice. The database records no benchmark scores, so real-world gaming or compute performance cannot be directly verified from the available figures.

For users who prioritize raw graphics throughput, ray tracing capability, and higher resolutions, the Intel Arc G3 Extreme is the clear choice based on the recorded specifications. For users who need the lowest power footprint and are willing to accept far lower computational output, the AMD Radeon 820M fits that niche. The release timing also favors Intel, as the Arc G3 Extreme is a newer product by roughly 15 months.

Specification Differences

The two GPUs differ on the following recorded fields:

• Manufacturer: AMD versus Intel
• Chip: Krackan Point 2 versus Panther Lake
• Architecture: RDNA 3.5 versus Xe3-LPG
• Generation: Navi III IGP (Strix Point Mobile) versus Arc Graphics-M (Panther Lake)
• Process node: 4 nm versus 3 nm
• Foundry: TSMC versus Intel
• Base clock: 400 MHz versus 300 MHz
• Boost clock: 2800 MHz versus 2500 MHz
• Shading units: 128 versus 1536
• TMUs: 8 versus 48
• ROPs: 4 versus 24
• RT cores: 2 versus 12
• Pixel rate: 11.20 GPixel/s versus 60.00 GPixel/s
• Texture rate: 22.40 GTexel/s versus 120.0 GTexel/s
• FP32: 716.8 GFLOPS versus 7.680 TFLOPS
• FP16: 716.8 GFLOPS (1:1) versus 15.36 TFLOPS (2:1)
• TDP: 15 W versus 80 W
• Bus interface: PCIe 4.0 x8 versus IGP
• Release date: 2025-02-28 versus 2026-05-31
• Predecessor: Navi II IGP versus none recorded

Fields that are identical include system-shared memory size and type, system-dependent bandwidth, IGP slot width, no power connectors, no suggested PSU, portable-device-dependent display outputs, and the full API list (DirectX 12 Ultimate 12_2, OpenGL 4.6, Vulkan 1.4). Neither part records a launch MSRP, transistor count, or die size.

Where Each One Wins

The Intel Arc G3 Extreme wins in every raw throughput category. Its 1536 shading units and 48 TMUs give it a structural advantage in shader-heavy workloads and texture sampling. The 60.00 GPixel/s pixel rate supports higher resolution rendering, and the 12 RT cores provide substantial ray tracing capability. The 7.680 TFLOPS FP32 and 15.36 TFLOPS FP16 figures indicate strong general-purpose compute and half-precision acceleration. This makes it the appropriate choice for graphically demanding tasks where performance is the primary requirement and an 80 W power budget is acceptable.

The AMD Radeon 820M wins in power efficiency and clock speed. Its 15 W TDP is 5.3x lower than Intel's, making it suitable for low-power portable devices where battery life and thermal limits dominate design decisions. Its higher base and boost clocks (400 MHz and 2800 MHz versus 300 MHz and 2500 MHz) suggest better single-threaded shader responsiveness per clock, though the massive shader count disadvantage means this does not translate into overall performance leadership. The AMD part also uses a 4 nm TSMC process, which may offer different thermal characteristics than Intel's 3 nm node, though the database does not include thermal measurements.

For ray tracing specifically, Intel's 12 RT cores versus AMD's 2 RT cores gives it a clear advantage in any workload that uses hardware-accelerated ray traversal. The identical API support means both can run the same DirectX 12 Ultimate and Vulkan 1.4 applications, but the underlying hardware capability heavily favors Intel.

For systems that pair the GPU with a constrained power delivery design, such as thin-and-light laptops or fanless devices, the AMD Radeon 820M's 15 W envelope is the deciding factor. For any system that can accommodate 80 W, the Intel Arc G3 Extreme offers more than 10x the compute throughput and is the stronger choice across all recorded performance metrics.