AMD Ryzen 3 PRO 5355GE vs Intel Core i7-1255U Comparison

# Head-to-Head Benchmarks

The benchmark data splits these two processors into distinct performance profiles, with the Intel Core i7-1255U taking 12 of the 17 head-to-head comparisons while the AMD Ryzen 3 PRO 5355GE claims five. The margins, however, tell a more nuanced story than the win count alone.

The Intel part's most decisive victories come in single-threaded and lightly threaded workloads. In Cinebench R15 single-core, the i7-1255U scores 237.5 against the Ryzen's 154, a 54.2% advantage. That gap narrows considerably in Cinebench R20 single-core, where Intel leads 654 to 643, just 1.7% ahead. The R23 single-core test shows Intel ahead by 7.6%, scoring 1647 versus 1531. PassMark single-thread results align with the R23 margin: Intel leads 3192 to 3089, a 3.3% edge.

Multi-threaded results are inconsistent across test versions. The i7-1255U wins Cinebench R15 multi-core by 26.9% (1387 vs 1093) and R20 multi-core by a slim 1.8% (4635 vs 4555). Yet in Cinebench R23 multi-core, the Ryzen 3 PRO 5355GE reverses the trend decisively, scoring 10846 against Intel's 8285 — a 23.6% swing in AMD's favor. This R23 result is the single largest multi-core delta in either direction.

PassMark workloads further illustrate the split. Intel dominates floating-point math, winning 32618 to 24115, a 35.3% margin. Physics processing favors Intel even more strongly at 42.9% (789 vs 552). Prime number finding goes to Intel by 29% (40 vs 31), and integer math by 8.6% (48498 vs 44665). The Ryzen counters with extended instructions, winning 10368 to 8231 (20.6% ahead), and takes narrower wins in data compression (152885 vs 147320, 3.6% ahead), data encryption (9564 vs 9262, 3.2% ahead), and random string sorting (17255 vs 16934, 1.9% ahead). PassMark multithread gives Intel a modest 3.7% win (13234 vs 12761).

Overall average scores are nearly identical: the i7-1255U averages 17656 against the Ryzen's 17482, a difference of about 1%. Both sit at the 71st percentile among all CPUs, and each lands near comparable rivals in their respective nearestRivals lists. The Intel chip's closest competitor is the Intel Core i3-13100F at 17653 (0% delta), while the AMD part's nearest rival is the AMD Ryzen 5 4600G at 17507 (-0.1% delta).

# Architecture Differences

The two processors come from fundamentally different design philosophies. The Intel Core i7-1255U uses Alder Lake architecture on a 10 nm process built by Intel, featuring a hybrid configuration of 10 cores and 12 threads. The AMD Ryzen 3 PRO 5355GE employs Zen 3 architecture on a 7 nm TSMC process, with a conventional 4-core, 8-thread layout.

Cache structures diverge sharply. The Intel part allocates 80 KB of L1 per core, 1.25 MB of L2 per core, and 12 MB of shared L3. AMD's design uses 64 KB L1 per core, 512 KB L2 per core, and 8 MB of L3. The Intel chip's larger per-core L2 could benefit workloads that repeatedly access a working set, while AMD's smaller cache may increase reliance on system memory.

Memory support differs as well. The i7-1255U supports both DDR4 and DDR5 in dual-channel configuration. The Ryzen 3 PRO 5355GE supports only DDR4, dual-channel, with a rated bandwidth of 51.2 GB/s. The AMD part includes ECC memory support, which the Intel chip lacks — a meaningful distinction for error-sensitive computing environments.

PCIe connectivity also separates them. Intel provides Gen 4 with 20 CPU-attached lanes, while AMD offers Gen 3 with 16 CPU-attached lanes. The Intel platform's newer PCIe generation can deliver higher bandwidth to compatible devices.

Process node and foundry differences are notable. Intel fabricates the i7-1255U on its own 10 nm process. AMD uses TSMC's 7 nm node, and the Ryzen 3 PRO 5355GE's die contains 10,700 million transistors on a 180 mm² die. These fabrication differences contribute to the thermal and power characteristics: the Intel part carries a 15 W TDP, while the AMD part is rated at 35 W.

Socket and market positioning also diverge. The i7-1255U uses Intel BGA 1744 and targets mobile systems. The Ryzen 3 PRO 5355GE uses AMD Socket AM4 and is classified as a desktop processor. Integrated graphics differ: Intel pairs with Iris Xe 96EU, while AMD includes Radeon Vega 6.

Release timing places the Intel part first, with a release date of 2022-02-22. The AMD part arrived later, on 2024-09-04, despite being part of the 5000 series based on older Zen 3 architecture.

# FAQ

Q: Which processor has the higher single-core performance?

A: The Intel Core i7-1255U wins every single-core benchmark in the comparison. Its margins range from 1.7% in Cinebench R20 single-core (654 vs 643) to 54.2% in Cinebench R15 single-core (237.5 vs 154). In Cinebench R23 single-core, Intel leads 1647 to 1531, a 7.6% advantage.

Q: Why does the AMD Ryzen 3 PRO 5355GE win Cinebench R23 multi-core by such a large margin?

A: The Ryzen scores 10846 in Cinebench R23 multi-core compared to the Intel's 8285, a 23.6% delta. This is despite losing the R15 and R20 multi-core tests. The R23 result suggests that under sustained multi-threaded load, the AMD part's 35 W TDP allows it to maintain performance more effectively than the 15 W Intel chip, though the benchmark data alone does not specify the cause.

Q: How do the two processors compare in encryption and compression workloads?

A: The AMD Ryzen 3 PRO 5355GE leads in both. Data compression scores 152885 for AMD versus 147320 for Intel, a 3.6% edge. Data encryption favors AMD 9564 to 9262, a 3.2% margin. These are relatively narrow wins compared to the larger Intel advantages in other PassMark tests.

Q: Which processor has better floating-point performance?

A: The Intel Core i7-1255U dominates in this area. PassMark floating-point math scores 32618 for Intel versus 24115 for AMD, a 35.3% advantage. The physics test also heavily favors Intel, with a 42.9% lead (789 vs 552).

Q: Do both processors occupy the same performance tier overall?

A: Yes, the average benchmark scores are nearly identical. The Intel Core i7-1255U averages 17656, while the AMD Ryzen 3 PRO 5355GE averages 17482. Both sit at the 71st percentile of all CPUs. Their nearest rivals also cluster around the same average score range, from 17333 to 17693.

Q: What memory features distinguish the two processors?

A: The Intel i7-1255U supports both DDR4 and DDR5 memory, while the AMD Ryzen 3 PRO 5355GE supports DDR4 only. Critically, the AMD part includes ECC memory support, which the Intel chip does not offer. Both use dual-channel memory buses.

# The Verdict

The data supports a clear but conditional recommendation. For workloads dominated by single-threaded performance, floating-point math, physics simulation, or prime number calculations, the Intel Core i7-1255U is the stronger choice. Its single-core wins across all Cinebench versions and PassMark tests, plus floating-point and physics advantages exceeding 35%, make it suitable for interactive applications and scientific computing tasks that favor high per-core throughput.

The AMD Ryzen 3 PRO 5355GE earns its recommendation for sustained multi-threaded rendering workloads, as evidenced by its 23.6% victory in Cinebench R23 multi-core. It also leads in extended instruction workloads, data compression, encryption, and random string sorting — tasks that may benefit from its higher 35 W power envelope and Zen 3 efficiency on the 7 nm process.

System integration considerations favor specific use cases. The Intel part's mobile BGA 1744 socket and 15 W TDP suit thin-and-light laptops where power efficiency is paramount. The AMD part's desktop AM4 socket, 35 W TDP, and ECC memory support position it for compact desktop builds where data integrity and sustained throughput matter more than mobility.

The near-identical average scores (17656 vs 17482) and matching 71st percentile ranking mean neither processor offers a universal performance advantage. Instead, the choice hinges on workload profile and platform requirements. Users prioritizing portability, single-thread responsiveness, and newer PCIe Gen 4 connectivity should choose the Intel chip. Those needing ECC memory, sustained multi-core rendering, or an upgradeable desktop platform should select the AMD processor.

# Specification Differences

| Specification | Intel Core i7-1255U | AMD Ryzen 3 PRO 5355GE |

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

| Cores | 10 | 4 |

| Threads | 12 | 8 |

| Base Clock | 1700.00 MHz | 3.60 GHz |

| Boost Clock | 4.70 GHz | 4.20 GHz |

| TDP | 15 W | 35 W |

| Socket | Intel BGA 1744 | AMD Socket AM4 |

| Architecture | Alder Lake | Zen 3 |

| Codename | Alder Lake-U | Cezanne |

| Process Node | 10 nm | 7 nm |

| Foundry | Intel | TSMC |

| Transistors | Not specified | 10,700 million |

| Die Size | Not specified | 180 mm² |

| L1 Cache | 80 KB (per core) | 64 KB (per core) |

| L2 Cache | 1.25 MB (per core) | 512 KB (per core) |

| L3 Cache | 12 MB (shared) | 8 MB |

| Memory Support | DDR4, DDR5 | DDR4 |

| Memory Bandwidth | Not specified | 51.2 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 4, 20 Lanes (CPU only) | Gen 3, 16 Lanes (CPU only) |

| Integrated Graphics | Iris Xe 96EU | Radeon Vega 6 |

| Market Segment | Mobile | Desktop |

| Release Date | 2022-02-22 | 2024-09-04 |

| Part Number | SRLFP | 100-000001751 |