AMD Radeon RX 6600 LE vs Intel Arc A770 Comparison

AMD Radeon RX 6600 LE and Intel Arc A770 occupy similar performance tiers but achieve their positions through completely different design philosophies. The RX 6600 LE is a compact, efficient RDNA 2 part that punches above its weight, while the Arc A770 is a large, feature-rich Alchemist flagship with a massive memory pool. Benchmark data shows the Intel card leads in raw compute scores, but the AMD card holds its own in specific workloads, making the choice highly dependent on what you prioritize. The Arc A770 wins both head-to-head compute tests, yet the RX 6600 LE posts a higher average benchmark score, indicating a nuanced performance landscape where synthetic tests do not tell the whole story.

Where Each One Wins

The Intel Arc A770 dominates in raw compute throughput. In the two available head-to-head benchmarks, it wins decisively in both OpenCL and Vulkan workloads. The Geekbench OpenCL score of 109,175 for the Arc A770 versus 69,229 for the RX 6600 LE represents a massive 36.6% lead, while the Vulkan test shows a 23.2% advantage with scores of 94,284 versus 72,428. This makes the Arc A770 the clear choice for compute-heavy tasks like rendering, scientific simulations, or any workload that leverages parallel processing power.

The AMD Radeon RX 6600 LE wins in the aggregate performance metric. Despite losing both head-to-head tests, it achieves an average benchmark score of 70,829 compared to the Arc A770's 68,809. This suggests the RX 6600 LE is more consistent across a wider range of applications not captured in the limited head-to-head set. The AMD card also holds a higher percentile ranking at 91 versus the Arc A770's 90, meaning it outperforms a slightly larger fraction of all GPUs in the database. For gamers or users running mixed workloads, this consistency may translate to fewer performance dips in less optimized software.

The Arc A770's 16 GB memory configuration gives it a clear advantage in memory-intensive scenarios like high-resolution texture loading or large dataset processing. Its 512.0 GB/s bandwidth is more than double the RX 6600 LE's 224.0 GB/s, which directly impacts how quickly data moves to and from the GPU. The RX 6600 LE counters with efficiency, drawing 132 W versus 225 W and requiring only a 300 W PSU versus 550 W, making it the better fit for small form factor builds or systems with older power supplies.

Architecture Differences

The two GPUs come from different architectural generations and design philosophies. AMD's RX 6600 LE uses the Navi 23 chip built on RDNA 2.0 architecture, manufactured on TSMC's 7 nm process. Intel's Arc A770 uses the DG2-512 chip with Xe-HPG architecture, fabricated on a more advanced 6 nm process from the same foundry. The process advantage is evident in transistor density: Intel packs 53.4M transistors per square millimeter versus AMD's 46.7M, though AMD's smaller 237 mm² die versus Intel's 406 mm² means the total transistor count heavily favors Intel at 21,700 million versus 11,060 million.

Execution resources differ dramatically. The Arc A770 features 4,096 shading units, 256 texture mapping units, and 128 ROPs, while the RX 6600 LE has 1,792 shading units, 112 TMUs, and 64 ROPs. Ray tracing hardware also favors Intel with 32 RT cores versus AMD's 28. These differences translate directly to theoretical performance: the Arc A770 delivers 19.66 TFLOPS FP32 and 614.4 GTexel/s texture rate, while the RX 6600 LE manages 8.942 TFLOPS and 279.4 GTexel/s. The Intel card also doubles pixel throughput at 307.2 GPixel/s versus 159.7 GPixel/s.

Memory architecture is another major divergence. The RX 6600 LE uses an 8 GB GDDR6 configuration on a 128-bit bus, while the Arc A770 offers 16 GB GDDR6 on a 256-bit bus. Effective memory speed is higher on Intel at 16 Gbps versus 14 Gbps for AMD, compounding the bandwidth advantage. Both support PCIe 4.0, but the Arc A770 uses a full x16 interface while the RX 6600 LE operates at x8, which can matter for bandwidth-sensitive workloads. Display outputs differ too: AMD provides 3x DisplayPort 1.4a, while Intel offers 3x DisplayPort 2.0, with both having a single HDMI 2.1 port.

Head-to-Head Benchmarks

The Geekbench OpenCL test is the Arc A770's strongest showing. Scoring 109,175 against the RX 6600 LE's 69,229, the Intel card leads by 36.6%. This result aligns perfectly with the architectural disparity — the Arc A770 has 2.3 times the shading units and 2.2 times the FP32 throughput. The OpenCL workload scales well with raw compute resources, and Intel's massive execution array simply overwhelms AMD's smaller configuration.

The Vulkan test narrows the gap but still favors Intel. The Arc A770 scores 94,284 versus 72,428 for the RX 6600 LE, a 23.2% difference. This smaller margin suggests the RX 6600 LE's RDNA 2 architecture is relatively more efficient in Vulkan workloads, possibly due to better driver optimization or more effective use of its 28 RT cores. The RX 6600 LE's Vulkan score (72,428) is actually higher than its OpenCL score (69,229), while the Arc A770 shows the opposite trend, scoring lower in Vulkan than OpenCL.

An interesting anomaly emerges when comparing average scores to head-to-head results. The RX 6600 LE averages 70,829 across all benchmarks, which is actually higher than its best head-to-head score. The Arc A770 averages 68,809, significantly below its OpenCL score of 109,175. This indicates the Arc A770 has wider performance variability across different test scenarios, while the RX 6600 LE maintains more consistent performance. The Arc A770's nearest rival, the NVIDIA CMP 90HX, scores 69,000 with a -0.3% delta, while the RX 6600 LE's closest competitor is the AMD Radeon RX 6650M at 71,768 with a -1.3% delta.

FAQ

Q: Which GPU has better raw compute performance?

A: The Intel Arc A770 wins decisively in compute benchmarks. It scores 109,175 in Geekbench OpenCL, which is 36.6% higher than the RX 6600 LE's 69,229. In Vulkan, the Arc A770 leads with 94,284 versus 72,428, a 23.2% advantage.

Q: Why does the RX 6600 LE have a higher average benchmark score if it loses head-to-head tests?

A: The RX 6600 LE averages 70,829 across all GPU benchmarks, while the Arc A770 averages 68,809. This discrepancy occurs because the head-to-head tests only cover two workloads, while the average includes many more benchmarks where the AMD card's efficiency and consistency help it perform relatively better.

Q: How do the memory configurations compare?

A: The Arc A770 has 16 GB of GDDR6 on a 256-bit bus with 512.0 GB/s bandwidth, while the RX 6600 LE has 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth. The Intel card offers double the capacity and more than double the bandwidth.

Q: What are the power requirements for each card?

A: The RX 6600 LE has a TDP of 132 W and requires a 300 W PSU with a single 8-pin connector. The Arc A770 has a TDP of 225 W, needs a 550 W PSU, and uses both a 6-pin and 8-pin connector.

Q: Which card is better for ray tracing?

A: The Arc A770 has 32 RT cores compared to 28 on the RX 6600 LE, giving it a hardware advantage in ray tracing workloads. However, benchmark data in the head-to-head tests does not isolate ray tracing performance specifically.

Q: What is the production status of each GPU?

A: The RX 6600 LE is listed as Active production, while the Arc A770 is marked as End-of-life. The Intel card was released on 2022-10-11, whereas the AMD card came later on 2023-12-07.

Specification Differences

| Specification | AMD Radeon RX 6600 LE | Intel Arc A770 |

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

| Architecture | RDNA 2.0 | Xe-HPG |

| Process Node | 7 nm | 6 nm |

| Transistors | 11,060 million | 21,700 million |

| Die Size | 237 mm² | 406 mm² |

| Transistor Density | 46.7M / mm² | 53.4M / mm² |

| Base Clock | 1626 MHz | 2100 MHz |

| Boost Clock | 2495 MHz | 2400 MHz |

| Memory Size | 8 GB | 16 GB |

| Memory Bus | 128 bit | 256 bit |

| Memory Bandwidth | 224.0 GB/s | 512.0 GB/s |

| Shading Units | 1792 | 4096 |

| TMUs | 112 | 256 |

| ROPs | 64 | 128 |

| RT Cores | 28 | 32 |

| FP32 Performance | 8.942 TFLOPS | 19.66 TFLOPS |

| FP16 Performance | 17.88 TFLOPS (2:1) | 39.32 TFLOPS (2:1) |

| Pixel Rate | 159.7 GPixel/s | 307.2 GPixel/s |

| Texture Rate | 279.4 GTexel/s | 614.4 GTexel/s |

| TDP | 132 W | 225 W |

| Power Connectors | 1x 8-pin | 1x 6-pin + 1x 8-pin |

| Suggested PSU | 300 W | 550 W |

| Bus Interface | PCIe 4.0 x8 | PCIe 4.0 x16 |

| Display Outputs | 1x HDMI 2.1, 3x DisplayPort 1.4a | 1x HDMI 2.1, 3x DisplayPort 2.0 |

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

| Release Date | 2023-12-07 | 2022-10-11 |

| Launch MSRP | Not available | 329 USD |

The Verdict

The data presents a clear split decision. For users prioritizing raw compute performance, the Intel Arc A770 is the obvious choice. Its OpenCL score of 109,175 is 36.6% higher than the RX 6600 LE, and its Vulkan advantage stands at 23.2%. The 16 GB memory pool and 512.0 GB/s bandwidth make it substantially better equipped for large datasets and high-resolution textures. The Arc A770 also offers more than double the FP32 throughput at 19.66 TFLOPS versus 8.942 TFLOPS, making it the stronger candidate for rendering, machine learning inference, or any compute-heavy application.

However, the RX 6600 LE wins on consistency and efficiency. Its average benchmark score of 70,829 exceeds the Arc A770's 68,809, and its higher percentile ranking (91 versus 90) suggests it performs better relative to the broader GPU landscape. The 132 W TDP and 300 W PSU requirement make it dramatically easier to integrate into existing systems, especially small form factor builds. The Active production status also means easier availability compared to the Arc A770's End-of-life status.

Gamers face a tougher call. The Arc A770's superior bandwidth and ray tracing hardware suggest better future-proofing for next-generation titles, but the RX 6600 LE's more consistent benchmark profile may translate to fewer stutters in less optimized games. The Arc A770's launch MSRP of 329 USD is noteworthy given its performance class. Ultimately, the choice hinges on workload: compute-heavy users should pick the Arc A770, while efficiency-focused buyers or those with power supply constraints should choose the RX 6600 LE.