CPU Comparison

The Intel Core i9-11900KB is the decisive performance winner in this comparison, dominating the Intel Atom x7433RE across every shared benchmark. The data shows the i9-11900KB leads by a consistent 81.7% in all five head-to-head tests, making the Atom x7433RE suitable only for power-constrained, low-intensity workloads. The Atom’s only statistical advantage is its average benchmark score of 5601, which is 0.3% higher than the i9’s 5587, but this is a negligible difference driven by a broader benchmark suite. For any task requiring multi-threaded rendering, single-core responsiveness, or heavy compute, the i9-11900KB is the only rational choice.

The Verdict

The benchmark data is unambiguous: the Intel Core i9-11900KB is the superior processor for virtually all performance-sensitive use cases. It wins all five shared head-to-head benchmarks with a deltaPct of -81.7% relative to the Atom x7433RE, meaning the i9 scores roughly 4.5 times higher in each test. The i9’s Cinebench R23 multicore score of 19316 dwarfs the Atom’s 3535, and its single-core score of 2727 is over five times the Atom’s 499. This makes the i9 ideal for content creation, software compilation, and any workload that scales with cores and threads.

The Intel Atom x7433RE, by contrast, is a low-power embedded processor with a TDP of 9 watts versus the i9’s 65 watts. Its benchmark scores are modest, but its 61st percentile ranking among all CPUs matches the i9’s percentile, suggesting that for its target segment, low-power mobile and industrial applications, it performs adequately. The Atom’s PassMark single-thread score of 1568 is respectable for a 4-core design, but its Cinebench R23 multicore score of 3535 is only 18% of the i9’s output. Choose the Atom only if power consumption and thermal footprint are the absolute priorities; otherwise, the i9-11900KB is the verdict-driven pick.

Architecture Differences

The two processors represent fundamentally different Intel architectures. The Atom x7433RE is built on the Amston Lake architecture with Gracemont cores, while the i9-11900KB uses the Tiger Lake-H architecture with Core i9 (Tiger Lake-H) cores. Both use a 10 nm process node and are fabricated by Intel, but their design goals diverge sharply.

Core counts differ significantly: the Atom has 4 cores and 4 threads, while the i9 has 8 cores and 16 threads. The i9 also features a much larger cache hierarchy, with 1.25 MB of L2 per core (totaling 10 MB across 8 cores) and 24 MB of shared L3, compared to the Atom’s 2 MB shared L2 and 6 MB shared L3. The i9’s L1 cache is 80 KB per core versus the Atom’s 96 KB per core, but the i9’s total cache capacity is vastly superior.

Clock speeds tell the same story: the Atom runs at a 1.50 GHz base and 3.40 GHz boost, while the i9 operates at 3.30 GHz base and 5.30 GHz boost. The i9 also has an unlocked multiplier, enabling overclocking, whereas the Atom is locked. The i9 supports DDR4 memory only, but with a dual-channel bus delivering 51.2 GB/s bandwidth, versus the Atom’s single-channel DDR4/DDR5 support at 38.4 GB/s. PCIe capabilities differ as well: the i9 offers Gen 4 with 20 lanes, while the Atom provides Gen 3 with 9 lanes. Integrated graphics differ, with the i9 featuring UHD Graphics 750 and the Atom using UHD Graphics 32EU. The i9’s die size is 190 mm², while the Atom’s is not specified.

FAQ

Q: Which processor has a higher average benchmark score?

A: The Intel Atom x7433RE has an average benchmark score of 5601, which is 0.3% higher than the Intel Core i9-11900KB’s 5587. However, this difference is within the margin of error and does not reflect real-world performance superiority.

Q: How much faster is the i9-11900KB in multi-core rendering?

A: In Cinebench R23 multicore, the i9 scores 19316 versus the Atom’s 3535, representing an 81.7% lead. The same deltaPct applies to Cinebench R20 multicore (8112 vs 1484) and Cinebench R15 multicore (1946 vs 356).

Q: Does the Atom x7433RE have any benchmark where it wins?

A: No. Among the five shared head-to-head benchmarks, the i9-11900KB wins all five. The Atom does not record a single victory (winsA: 0, winsB: 5).

Q: What is the power consumption difference?

A: The Atom x7433RE has a TDP of 9 watts, while the i9-11900KB has a TDP of 65 watts. This makes the Atom drastically more power-efficient, at the cost of performance.

Q: Can the i9-11900KB be overclocked?

A: Yes, the i9-11900KB has an unlocked multiplier (multiplierUnlocked: true), allowing user overclocking. The Atom x7433RE has a locked multiplier and cannot be overclocked.

Q: What are the memory bandwidth capabilities of each?

A: The i9-11900KB supports dual-channel DDR4 with a memory bandwidth of 51.2 GB/s. The Atom x7433RE supports single-channel DDR4 and DDR5 with a memory bandwidth of 38.4 GB/s.

Specification Differences

| Specification | Intel Atom x7433RE | Intel Core i9-11900KB |

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

| Cores | 4 | 8 |

| Threads | 4 | 16 |

| Base Clock | 1.50 GHz | 3.30 GHz |

| Boost Clock | 3.40 GHz | 5.30 GHz |

| TDP | 9 W | 65 W |

| Socket | Intel BGA 1264 | Intel BGA 1787 |

| Architecture | Amston Lake | Tiger Lake |

| Codename | Amston Lake | Tiger Lake-H |

| Generation | Atom (Gracemont) | Core i9 (Tiger Lake-H) |

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

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

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

| Memory Support | DDR4, DDR5 | DDR4 |

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

| Memory Bandwidth | 38.4 GB/s | 51.2 GB/s |

| PCIe | Gen 3, 9 Lanes (CPU only) | Gen 4, 20 Lanes (CPU only) |

| Integrated Graphics | UHD Graphics 32EU | UHD Graphics 750 |

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

| Launch MSRP | $63 | $539 |

| Multiplier Unlocked | No | Yes |

| Die Size | Not specified | 190 mm² |

Head-to-Head Benchmarks

The head-to-head benchmark data shows a total rout, with the i9-11900KB winning all five tests by an identical deltaPct of -81.7%. In Cinebench R15 multicore, the i9 scores 1946 against the Atom’s 356. The R20 multicore test shows 8112 versus 1484, and R23 multicore shows 19316 versus 3535. The single-core tests follow the same pattern: R20 single-core is 1145 versus 209, and R23 single-core is 2727 versus 499.

The consistency of the -81.7% deltaPct across all tests indicates that the performance gap is proportional, not workload-dependent. The i9’s 8-core/16-thread configuration with a 5.30 GHz boost clock simply overwhelms the Atom’s 4-core/4-thread design with a 3.40 GHz boost. The i9’s larger L3 cache (24 MB vs 6 MB) and dual-channel memory bandwidth (51.2 GB/s vs 38.4 GB/s) further compound its advantage in memory-intensive workloads.

Notably, the Atom’s PassMark scores, while not in the head-to-head set, show respectable absolute numbers: a single-thread score of 1568 and an integer math score of 13054. However, these are dwarfed by the i9’s Cinebench results, and the lack of PassMark data for the i9 prevents a direct comparison in those specific tests.

Where Each One Wins

The Intel Core i9-11900KB wins decisively in every performance category measured. Its 81.7% lead in multi-core Cinebench tests makes it the clear choice for rendering, video encoding, scientific computing, and any parallel workload. The single-core advantage (81.7% in R20 and R23) means it also excels in everyday tasks like web browsing, office applications, and light gaming, where single-thread performance matters. The 16 threads and 24 MB of L3 cache are ideal for virtualization and heavy multitasking. Its unlocked multiplier adds overclocking headroom for enthusiasts.

The Intel Atom x7433RE, despite losing all benchmarks, has a distinct use case. Its 9-watt TDP is a fraction of the i9’s 65 watts, making it suitable for fanless, battery-powered, or thermally constrained embedded systems. Its single-channel memory support and Gen 3 PCIe lanes are adequate for industrial controllers, network appliances, or lightweight edge computing. The Atom’s active production status and lower launch MSRP of $63 (versus the i9’s $539) position it as a low-cost, low-power solution, though the i9’s end-of-life status should be noted for long-term availability. For any workload where performance is a priority, the i9-11900KB is the unequivocal winner; the Atom only makes sense when power draw is the dominant constraint.