AMD Radeon 820M vs Intel Arc A380E Comparison

Head-to-Head Benchmarks

The recorded data for this comparison contains no individual benchmark entries, so a direct workload-by-workload breakdown is not available from the database. Instead, the analysis must rely on the architectural and specification deltas that determine performance potential in different scenarios.

The AMD Radeon 820M is an integrated graphics processor, sharing system memory and drawing from a 15 W power envelope. The Intel Arc A380E is a discrete single-slot card with 6 GB of dedicated GDDR6 memory, a 75 W TDP, and a suggested PSU of 250 W. In raw throughput terms, the Arc A380E delivers 4.096 TFLOPS of FP32 compute, which is 5.7 times the 716.8 GFLOPS of the Radeon 820M. The texture rate follows a similar pattern: 128.0 GTexel/s versus 22.40 GTexel/s, a 5.7x advantage. Pixel throughput shows an even larger gap, with the Arc card hitting 64.00 GPixel/s against the Radeon's 11.20 GPixel/s, a 5.7x difference as well.

Memory bandwidth is where the separation becomes most pronounced. The Arc A380E has 186.0 GB/s of dedicated bandwidth over a 96-bit bus with GDDR6 running at an effective 15.5 Gbps. The Radeon 820M depends on system memory with bandwidth described as "System Dependent," which means actual throughput fluctuates based on the platform's DRAM configuration and CPU memory controller. In integrated graphics scenarios, shared memory access typically incurs latency penalties and bandwidth contention that a discrete card with its own VRAM avoids. Benchmark results would likely show the Arc A380E pulling far ahead in memory-intensive workloads such as high-resolution texturing, large scene geometry, and compute tasks that repeatedly access frame buffers.

The Radeon 820M does hold some advantages in the data. Its boost clock reaches 2800 MHz, which is 40% higher than the Arc A380E's fixed 2000 MHz clock. For workloads that scale with clock frequency rather than raw shader count, the Radeon can partially close the gap. Its 128 shading units operate at that higher frequency, but the sheer difference in execution resources (1024 shading units on the Intel part) means the clock advantage cannot overcome the core count deficit in parallel workloads. The Radeon also supports FP16 at a 1:1 ratio with FP32, meaning both data types deliver 716.8 GFLOPS. The Arc A380E offers FP16 at 8.192 TFLOPS, a 2:1 ratio over FP32, so mixed-precision or FP16-heavy workloads would favor Intel even more strongly.

The Arc A380E has 8 ray tracing cores versus 2 on the Radeon 820M. In ray-traced scenes, the Intel card would process significantly more rays per frame, assuming the drivers and API implementations perform as expected for their respective architectures. The Radeon's ray tracing hardware is present but minimal, suited for occasional effects rather than sustained RT workloads.

Neither part has tensor cores listed in the database, so AI acceleration claims would rest on shader-based compute or vendor-specific extensions not captured here. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API feature parity is exact for modern titles.

Architecture Differences

The AMD Radeon 820M uses the RDNA 3.5 architecture, manufactured on a 4 nm process at TSMC. It comes from the Krackan Point 2 chip and belongs to the Navi III IGP generation, specifically for Strix Point Mobile platforms. The Intel Arc A380E uses the Xe-HPG architecture, built on a 6 nm process also at TSMC, with the DG2-128 chip from the Alchemist (Arc 3) generation.

Process technology clearly favors AMD: 4 nm versus 6 nm means the Radeon's transistors are physically smaller, which typically enables higher clock speeds at lower power draw. The Radeon's 2800 MHz boost clock versus Intel's 2000 MHz fixed clock reflects this advantage. However, the Intel chip integrates far more hardware. The DG2-128 packs 7,200 million transistors across a 157 mm² die, yielding a transistor density of 45.9M per mm². The Radeon 820M's transistor count and die size are listed as unknown in the database, so no density comparison is possible.

The memory subsystem differs fundamentally. The Radeon 820M uses system-shared memory with no dedicated VRAM, no fixed bus width, and bandwidth that depends on the host platform. The Arc A380E has 6 GB of GDDR6 on a 96-bit interface with 186.0 GB/s of fixed bandwidth. The Intel card also lists a memory clock of 1937 MHz with 15.5 Gbps effective data rate, while the Radeon's memory clock is simply described as "System Shared." This structural difference means the Arc A380E can sustain predictable memory throughput regardless of CPU load, whereas the Radeon's memory performance varies with system configuration.

The rendering pipelines differ sharply. The Radeon 820M has 128 shading units, 8 texture mapping units, and 4 ROPs. The Arc A380E has 1024 shading units, 64 TMUs, and 32 ROPs. That is an 8x difference in shading units, TMUs, and ROPs, which directly explains the 5.7x to 5.7x gaps in FP32, texture, and pixel rates. The Radeon has 2 ray tracing cores; the Arc has 8. The Intel part also supports FP16 at 2:1 throughput over FP32, while the Radeon runs both at the same rate.

Power and physical design diverge completely. The Radeon is an IGP with a 15 W TDP, no slot width, no power connectors, and display outputs that are portable-device dependent. The Arc A380E is a single-slot card with a 75 W TDP, no power connectors (presumably slot-powered), a suggested PSU of 250 W, and dimensions of 254 mm length, 127 mm height, and 20 mm width. It outputs to 4x DisplayPort 2.0. The Intel card is marked end-of-life with a successor named Battlemage, while the Radeon is active production with a predecessor of Navi II IGP.

The release dates differ: the Arc A380E launched on 2024-03-31, and the Radeon 820M arrived on 2025-02-28. Both use PCIe 4.0 x8 interfaces. Both support identical API levels: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

FAQ

Q: Which GPU has higher raw compute throughput?

A: The Intel Arc A380E delivers 4.096 TFLOPS FP32, which is 5.7 times the 716.8 GFLOPS of the AMD Radeon 820M. The Intel part also provides 8.192 TFLOPS FP16 versus 716.8 GFLOPS on the AMD side.

Q: How do the memory systems compare?

A: The Arc A380E has 6 GB of GDDR6 on a 96-bit bus with 186.0 GB/s bandwidth. The Radeon 820M uses system-shared memory with no dedicated VRAM, no fixed bus width, and bandwidth described as system-dependent.

Q: Which GPU supports ray tracing, and how much hardware is dedicated to it?

A: Both support ray tracing. The Radeon 820M has 2 ray tracing cores, while the Arc A380E has 8 ray tracing cores.

Q: What are the power requirements for each?

A: The Radeon 820M is an IGP with a 15 W TDP and no power connectors. The Arc A380E is a single-slot card with a 75 W TDP, no power connectors, and a suggested PSU of 250 W.

Q: Which GPU is newer, and what are the production statuses?

A: The Radeon 820M was released on 2025-02-28 and is listed as active production. The Arc A380E was released on 2024-03-31 and is marked end-of-life, with a successor named Battlemage.

Q: Do the two GPUs support the same graphics APIs?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Neither has tensor cores listed in the database.

Specification Differences

| Specification | AMD Radeon 820M | Intel Arc A380E |

|---|---|---|

| Chip | Krackan Point 2 | DG2-128 |

| Architecture | RDNA 3.5 | Xe-HPG |

| Generation | Navi III IGP (Strix Point Mobile) | Alchemist (Arc 3) |

| Process Node | 4 nm | 6 nm |

| Transistors | unknown | 7,200 million |

| Die Size | unknown | 157 mm² |

| Transistor Density | null | 45.9M / mm² |

| Base Clock | 400 MHz | 2000 MHz |

| Boost Clock | 2800 MHz | 2000 MHz |

| Memory Clock | System Shared | 1937 MHz, 15.5 Gbps effective |

| Memory Size | System Shared | 6 GB |

| Memory Type | System Shared | GDDR6 |

| Memory Bus Width | System Shared | 96 bit |

| Memory Bandwidth | System Dependent | 186.0 GB/s |

| Shading Units | 128 | 1024 |

| TMUs | 8 | 64 |

| ROPs | 4 | 32 |

| Ray Tracing Cores | 2 | 8 |

| Pixel Rate | 11.20 GPixel/s | 64.00 GPixel/s |

| Texture Rate | 22.40 GTexel/s | 128.0 GTexel/s |

| FP32 | 716.8 GFLOPS | 4.096 TFLOPS |

| FP16 | 716.8 GFLOPS (1:1) | 8.192 TFLOPS (2:1) |

| TDP | 15 W | 75 W |

| Slot Width | IGP | Single-slot |

| Power Connectors | None | None |

| Suggested PSU | null | 250 W |

| Display Outputs | Portable Device Dependent | 4x DisplayPort 2.0 |

| Dimensions | null | 254 mm x 127 mm x 20 mm |

| Production Status | Active | End-of-life |

| Release Date | 2025-02-28 | 2024-03-31 |

| Predecessor | Navi II IGP | Xe Graphics |

| Successor | null | Battlemage |

Where Each One Wins

The Intel Arc A380E wins decisively in every measured raw performance category. Its FP32 throughput of 4.096 TFLOPS dwarfs the Radeon 820M's 716.8 GFLOPS. Its pixel rate of 64.00 GPixel/s and texture rate of 128.0 GTexel/s are both 5.7x higher. The 6 GB dedicated GDDR6 with 186.0 GB/s bandwidth eliminates the memory contention that plagues integrated graphics. The 8 ray tracing cores provide substantially more RT capability than the Radeon's 2. For desktop or embedded systems with a 250 W power supply or better, the Arc A380E is the clear choice for gaming, CAD, video rendering, or any compute task that benefits from high parallel throughput.

The AMD Radeon 820M wins in power efficiency and integration. Its 15 W TDP is one-fifth of the Arc A380E's 75 W. It requires no power connectors, no slot space, and no dedicated PSU recommendation. Its display outputs are portable-device dependent, meaning it fits into thin laptops and compact mobile platforms where a discrete card cannot physically exist. The Radeon's boost clock of 2800 MHz is 40% higher than Intel's 2000 MHz, which helps in lightly threaded or latency-sensitive scenes where shader count matters less than frequency. The 4 nm process also indicates a more modern manufacturing node, which typically correlates with better thermal behavior per watt.

The Arc A380E's end-of-life status and the Radeon's active production status point to different lifecycles. Intel has already named Battlemage as the successor, while AMD's Radeon 820M remains current. For a new design in 2025, the Radeon offers ongoing driver support and a longer expected shelf life. For maximum performance today, the Arc A380E's specification sheet is overwhelmingly stronger. The data does not include benchmark scores for either part, so real-world application deltas must be inferred from these architectural and specification differences rather than measured results. Both share identical API support, so software compatibility does not differentiate them. The choice rests on form factor, power budget, and performance needs: the Arc A380E for dedicated desktop workloads, the Radeon 820M for mobile integration.