CPU Comparison

The Intel Core i5-13500E and Intel Atom x7405C occupy vastly different corners of the Intel lineup, yet they land within 0.3% of each other in average benchmark score (6586 vs 6568). This is a statistical tie that masks a chasm in workload behavior. The i5-13500E is a 14-core Raptor Lake desktop part with a 65W TDP, while the Atom x7405C is a 4-core Amston Lake mobile chip sipping just 12W. The data shows the i5-13500E wins all six head-to-head Cinebench tests by margins between 413.4% and 421%, but the Atom counters with wins in Passmark integer, floating-point, and encryption workloads where the i5-13500E has no recorded scores. The story here is not who is faster overall, it is what each chip is designed to do.

Where Each One Wins

The workload split is stark. The Intel Core i5-13500E wins every single Cinebench test in the head-to-head comparison, covering both single-core and multi-core rendering scenarios. Its multi-core advantage is enormous: in Cinebench R23 multi-core, it scores 22772 against the Atom’s 4435, a 413.5% lead. This makes the i5-13500E the clear choice for CPU-bound rendering, video encoding, and any multi-threaded production task where raw throughput matters. The single-core results reinforce this, the i5-13500E leads by 413.4% in Cinebench R23 single-core (3214 vs 626), meaning even lightly-threaded applications like legacy software or spreadsheet macros run substantially faster on the desktop part.

The Intel Atom x7405C, conversely, wins nowhere in the direct head-to-head Cinebench suite, but its Passmark results tell a different story. It scores 14669 in integer math, 9063 in floating-point math, and 56317 in data compression, all workloads where the i5-13500E has no benchmark entries in the fact pack. This is not a case of the Atom being faster; it is a case of the Atom having a measured profile in these specific embedded-oriented tasks. The Atom’s 4004 in data encryption and 8089 in random string sorting suggest it can handle data-centric chores that do not appear in the i5-13500E’s benchmark list. The pragmatic interpretation: the i5-13500E dominates compute-heavy rendering, while the Atom’s Passmark results indicate competence in I/O and data manipulation tasks, though without a direct comparison, no relative claim can be made.

Architecture Differences

The two CPUs are built on fundamentally different microarchitectures. The i5-13500E uses Raptor Lake (codename Raptor Lake-S) on Intel’s 10nm process, featuring 14 cores and 20 threads with a base clock of 2.40 GHz and boost clock of 4.60 GHz. It has a hybrid design implied by the core/thread count (14 cores, 20 threads means 6 performance cores with hyperthreading and 8 efficiency cores without). The cache hierarchy is substantial: 80 KB L1 per core, 1.25 MB L2 per core, and 24 MB shared L3. This is a desktop-class part on Socket 1700 with support for dual-channel DDR4 and DDR5 memory, ECC support, and PCIe Gen 5 with 16 CPU lanes. Integrated UHD Graphics 770 is included.

The Atom x7405C uses Amston Lake (codename Amston Lake) with Gracemont cores, also on Intel’s 10nm process. It has 4 cores and 4 threads, no hyperthreading, with a base clock of 1.70 GHz and boost clock of 3.40 GHz. Its cache layout is simpler: 96 KB L1 per core, 2 MB shared L2, and 6 MB shared L3. The Atom is a mobile segment chip on BGA 1264 with a 12W TDP, single-channel memory support for DDR4 and DDR5, no ECC, and PCIe Gen 3 with 9 lanes. It has no integrated graphics. The process node is identical (10nm), but the architectural intent differs: the i5-13500E is built for peak performance with a large cache and high core count, while the Atom x7405C is optimized for low power and compact footprint, sacrificing threads, cache, and memory bandwidth.

Head-to-Head Benchmarks

The Cinebench results are uniformly lopsided. In Cinebench R15 multi-core, the i5-13500E scores 2295 versus the Atom’s 446, a 414.6% advantage. Single-core R15 shows 323 versus 62, a 421% lead. The pattern holds in R20: multi-core 9564 vs 1862 (413.6% lead) and single-core 1349 vs 262 (414.9% lead). R23 repeats the story with multi-core 22772 vs 4435 (413.5% lead) and single-core 3214 vs 626 (413.4% lead). These deltas are remarkably consistent, hovering around 413-421% across all tests, suggesting the performance gap is structural rather than workload-specific. The i5-13500E’s higher boost clock (4.60 vs 3.40 GHz) and 5x core count (14 vs 4) explain the multi-core gap; the single-core gap is more surprising given the Atom’s Gracemont efficiency cores, but the data is unambiguous.

The Atom’s Passmark scores provide context for its role but cannot be compared directly. Its multithread score is 5218, single-thread 1675, physics 460, and find prime numbers 22. The i5-13500E has no Passmark entries in the fact pack, so these numbers stand alone. The Atom’s average benchmark score of 6568 is nearly identical to the i5-13500E’s 6586, a 0.3% difference, but this average is heavily weighted by the Passmark suite, which the i5-13500E does not participate in. The Cinebench data, where both have scores, shows the i5-13500E is over 400% faster in every test. The averages are misleading without noting this asymmetry.

FAQ

Q: Which CPU has a higher boost clock?

A: The Intel Core i5-13500E boosts to 4.60 GHz, while the Intel Atom x7405C boosts to 3.40 GHz.

Q: How much faster is the i5-13500E in multi-core Cinebench R23?

A: The i5-13500E scores 22772 versus the Atom’s 4435, a 413.5% lead.

Q: Does the Atom x7405C support ECC memory?

A: No, the Atom x7405C does not support ECC memory, while the i5-13500E does.

Q: What is the TDP difference between these two CPUs?

A: The i5-13500E has a 65W TDP, while the Atom x7405C has a 12W TDP.

Q: Which CPU has more cache?

A: The i5-13500E has 24 MB shared L3 cache, compared to the Atom’s 6 MB shared L3. The i5-13500E also has 1.25 MB L2 per core, while the Atom has 2 MB L2 shared across all cores.

Q: Are these CPUs in the same performance percentile?

A: Yes, both the i5-13500E and Atom x7405C are in the 62nd percentile of all CPUs, with average benchmark scores of 6586 and 6568 respectively.

The Verdict

The data points to a clear segmentation. The Intel Core i5-13500E is the pick for any workload where Cinebench scores matter, rendering, 3D modeling, video encoding, or heavy multitasking. Its 413-421% lead across all six Cinebench tests is decisive, and its 14 cores, 20 threads, and 24 MB L3 cache provide the structural foundation for that dominance. The 65W TDP and desktop socket (LGA 1700) indicate it belongs in a full-size system with active cooling.

The Intel Atom x7405C is a different tool entirely. Its 12W TDP and BGA 1264 socket point to embedded or fanless designs where power efficiency trumps raw speed. The Passmark results, integer math 14669, floating-point 9063, data compression 56317, show it can handle data processing tasks, but its 4 cores and 4 threads limit it to lightweight, single-purpose applications. The 62nd percentile ranking for both chips is a statistical artifact of different benchmark suites; the Cinebench head-to-head is the only fair comparison, and it is not close. Choose the i5-13500E for performance, the Atom x7405C for power-constrained embedded roles where its benchmark profile is sufficient.

Specification Differences

| Specification | Intel Core i5-13500E | Intel Atom x7405C |

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

| Cores | 14 | 4 |

| Threads | 20 | 4 |

| Base Clock | 2.40 GHz | 1.70 GHz |

| Boost Clock | 4.60 GHz | 3.40 GHz |

| TDP | 65W | 12W |

| Socket | Intel Socket 1700 | Intel BGA 1264 |

| Architecture | Raptor Lake | Amston Lake |

| Codename | Raptor Lake-S | Amston Lake |

| Generation | Core i5 (Raptor Lake) | Atom (Gracemont) |

| Die Size | 215 mm² | Not specified |

| L1 Cache | 80 KB (per core) | 96 KB (per core) |

| L2 Cache | 1.25 MB (per core) | 2 MB (shared) |

| L3 Cache | 24 MB (shared) | 6 MB (shared) |

| Memory Bus | Dual-channel | Single-channel |

| Memory Bandwidth | Not specified | 38.4 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 5, 16 Lanes (CPU only) | Gen 3, 9 Lanes (CPU only) |

| Integrated Graphics | UHD Graphics 770 | N/A |

| Market Segment | Desktop | Mobile |

| Release Date | 2023-01-03 | 2024-04-07 |

| Launch MSRP | Not specified | $57 |

| Part Number | SRMFW | SRNEM |