Intel Atom x7835RE vs Intel Core i7-8565U Comparison

Head-to-Head Benchmarks

The recorded data presents a clear pattern: the Intel Atom x7835RE wins 13 of the 17 head-to-head comparisons, while the Intel Core i7-8565U takes 4. The most decisive victories belong to the Atom, particularly in data encryption, where it scores 5579 against the Core i7's 1993, a 179.9% advantage. Floating-point math also favors the Atom heavily: 16236 versus 12934, a 25.5% margin. Integer math follows with 26623 against 21581, a 23.4% lead.

The Cinebench suite shows consistent dominance for the Atom across every render test. In Cinebench R23 multicore, the Atom scores 6051 versus 5258, a 15.1% gap. The same delta appears in R23 singlecore (854 vs. 742), R20 multicore (2541 vs. 2208), R20 singlecore (358 vs. 311), R15 multicore (609 vs. 529), and R15 singlecore (85 vs. 74). Every Cinebench result reports exactly 15.1% difference, indicating a uniform scaling advantage rather than workload-specific behavior.

The Atom also wins PassMark multithread (7119 vs. 5988, 18.9% ahead), physics (500 vs. 458, 9.2% ahead), and data compression (76736 vs. 75995, a narrow 1% edge). Find prime numbers is close: 23 vs. 22, a 4.5% win for the Atom.

The Core i7-8565U's victories are narrower in total count but significant in specific workloads. Its largest win is single-thread performance: 2118 versus 1599, a 24.5% advantage. Extended instructions show a 24.2% lead for the Core i7 (4770 vs. 3617). Random string sorting goes to the Core i7 by a hair: 10200 vs. 10180, just 0.2% ahead.

Looking at average benchmark scores, the Atom's 9430 sits 8.8% above the Core i7's 8665. Both CPUs share the same 65th percentile versus all CPUs in the database, meaning they land in the same overall performance tier despite the Atom's higher raw average.

Architecture Differences

The two processors come from different architectural families. The Intel Atom x7835RE uses the Amston Lake architecture, part of the Atom (Gracemont) generation, built on a 10 nm process node. The Intel Core i7-8565U uses Whiskey Lake, specifically Whiskey Lake-U, on a 14 nm node. Both are manufactured by Intel, and both are mobile-market parts, but the design philosophies diverge sharply.

Core counts differ: the Atom has 8 cores and 8 threads, while the Core i7 has 4 cores and 8 threads. The Atom relies on physical cores without hyper-threading, whereas the Core i7 uses hyper-threading to reach 8 threads from 4 cores. Cache layouts reflect the different architectures. The Atom's L1 cache is 96 KB per core, L2 is 2 MB per module, and L3 is 6 MB shared. The Core i7's L1 is 64 KB per core, L2 is 256 KB per core, and L3 is 8 MB shared. The Core i7 has more total L3, but the Atom's per-module L2 design suits its Gracemont efficiency focus.

Clock speeds tell a contrasting story. The Atom's base clock is 1.30 GHz with a boost of 3.60 GHz. The Core i7's base clock is 1800.00 MHz (1.80 GHz) with a boost of 4.60 GHz. The Core i7 has higher clocks in both directions, yet the Atom wins most multi-threaded and even single-threaded Cinebench tests, indicating that architectural efficiency and core count outweigh raw clock speed in these workloads.

Memory support differs as well. The Atom supports DDR4 and DDR5 with a single-channel memory bus, while the Core i7 supports DDR3 and DDR4 with a dual-channel bus. Both have identical memory bandwidth in the database: 38.4 GB/s. Neither supports ECC memory. PCIe lanes differ: the Atom provides Gen 3 with 9 lanes (CPU only), while the Core i7 provides Gen 3 with 16 lanes (CPU only).

Integrated graphics also differ: the Atom has UHD Graphics 32EU, while the Core i7 has UHD Graphics 620. The Atom's production status is Active, released in 2024, while the Core i7 is End-of-life, released in 2018.

Where Each One Wins

The Atom x7835RE wins in every Cinebench render test, regardless of core count or single-thread versus multi-thread. This suggests its Gracemont cores deliver better sustained performance under rendering workloads, likely due to the 8 physical cores distributing the load evenly. The Atom also leads in PassMark multithread, physics, floating-point math, integer math, data compression, data encryption, and find prime numbers. These are compute-heavy tasks that benefit from more cores and efficient instruction throughput.

The Core i7-8565U wins in single-thread PassMark tests, extended instructions, and random string sorting. Its higher boost clock (4.60 GHz vs. 3.60 GHz) gives it an edge in latency-sensitive, low-thread-count operations. Extended instructions measure vector and SIMD-style workloads, where the Core i7's larger L3 and dual-channel memory bus may help. Random string sorting is nearly a tie, but the Core i7 edges ahead by 0.2%.

For typical office work, web browsing, or light productivity, the Core i7's single-thread advantage would show in snappier response times. For rendering, encryption, math-heavy calculations, or data compression, the Atom's core count and architectural efficiency make it the stronger choice. The data encryption result is particularly stark: 5579 vs. 1993, meaning the Atom processes encryption workloads nearly three times as fast.

Specification Differences

| Specification | Intel Atom x7835RE | Intel Core i7-8565U |

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

| Cores | 8 | 4 |

| Threads | 8 | 8 |

| Base clock | 1.30 GHz | 1800.00 MHz |

| Boost clock | 3.60 GHz | 4.60 GHz |

| TDP | 12 W | 15 W |

| Socket | Intel BGA 1264 | Intel BGA 1528 |

| Architecture | Amston Lake | Whiskey Lake |

| Codename | Amston Lake | Whiskey Lake-U |

| Generation | Atom (Gracemont) | Core i7 (Whiskey Lake) |

| Process node | 10 nm | 14 nm |

| L1 cache | 96 KB (per core) | 64 KB (per core) |

| L2 cache | 2 MB (per module) | 256 KB (per core) |

| L3 cache | 6 MB (shared) | 8 MB (shared) |

| Memory support | DDR4, DDR5 | DDR3, DDR4 |

| Memory bus | Single-channel | Dual-channel |

| Memory bandwidth | 38.4 GB/s | 38.4 GB/s |

| ECC memory | False | False |

| PCIe | Gen 3, 9 lanes (CPU only) | Gen 3, 16 lanes (CPU only) |

| Integrated graphics | UHD Graphics 32EU | UHD Graphics 620 |

| Market segment | Mobile | Mobile |

| Production status | Active | End-of-life |

| Release date | 2024-04-07 | 2018-09-30 |

| Launch MSRP | $127 | $409 |

| Multiplier unlocked | False | False |

| Part number | SRNER | SREJPSRFFW |

The table shows that the Atom is newer, smaller (10 nm vs. 14 nm), lower-power (12 W vs. 15 W), and cheaper at launch ($127 vs. $409). The Core i7 has more PCIe lanes, dual-channel memory, and a larger L3 cache. Both have identical memory bandwidth and no ECC support.

FAQ

Q: Which CPU has more cores?

A: The Intel Atom x7835RE has 8 cores and 8 threads. The Intel Core i7-8565U has 4 cores and 8 threads, using hyper-threading to match the thread count.

Q: How does the Atom perform in Cinebench R23 multicore?

A: The Atom scores 6051, while the Core i7 scores 5258. The Atom leads by 15.1%.

Q: Is the Core i7 ever faster than the Atom?

A: Yes, in single-thread PassMark tests (2118 vs. 1599, a 24.5% lead), extended instructions (4770 vs. 3617, a 24.2% lead), and random string sorting (10200 vs. 10180, a 0.2% lead).

Q: What is the memory bandwidth of each CPU?

A: Both have a memory bandwidth of 38.4 GB/s. The Atom uses a single-channel bus, while the Core i7 uses dual-channel.

Q: Which CPU was released later?

A: The Intel Atom x7835RE was released on 2024-04-07. The Intel Core i7-8565U was released on 2018-09-30.

Q: Do both CPUs support ECC memory?

A: No. Both have ECC memory set to false in the database.

The Verdict

The data points to the Intel Atom x7835RE as the stronger performer for the majority of workloads. It wins 13 of 17 benchmarks, including every Cinebench test and all compute-heavy PassMark tests except extended instructions. Its 8 physical cores, 10 nm process, and lower TDP (12 W vs. 15 W) make it more efficient per watt while delivering higher scores. The encryption result alone (5579 vs. 1993) justifies choosing the Atom for security-sensitive or data-intensive tasks.

The Intel Core i7-8565U remains relevant for single-threaded applications and workloads that rely on high boost clocks. Its 4.60 GHz boost and 24.5% single-thread lead in PassMark make it the better pick for legacy software, low-thread-count interactive tools, or tasks that cannot parallelize. The extended instructions lead (24.2%) also matters for developers using SIMD-heavy code.

Given the Atom's active production status, newer release date, and identical 65th percentile ranking, the database suggests it is the more future-proof choice. The Core i7's end-of-life status and older 14 nm node indicate it is a legacy option. For buyers choosing between these two, the Atom x7835RE wins on raw score, efficiency, and longevity. The Core i7-8565U wins only in narrow, single-thread scenarios. The verdict from the recorded data: choose the Atom unless the workload is explicitly single-threaded or SIMD-heavy.