Intel Atom x7433RE vs Intel Core i9-10900KF Comparison

The Verdict

The benchmark data presents a decisive separation between these two processors. The Intel Core i9-10900KF wins every recorded head-to-head benchmark, with a consistent performance gap of 81.3% in its favor across all five Cinebench tests. This is not a close contest; it is a generational and architectural mismatch.

The Atom x7433RE is a 4-core, 4-thread mobile processor from the Amston Lake family, built for efficiency and low power operation. The Core i9-10900KF is a 10-core, 20-thread desktop processor from the Comet Lake generation, designed for maximum throughput. The data shows the i9-10900KF is the only choice for any workload that demands processing power, rendering, or heavy multi-threading. The Atom x7433RE, with its 9W TDP, is the appropriate selection for fanless or passively cooled embedded systems, industrial PCs, or battery-sensitive mobile devices where raw speed is secondary to power draw and thermal output.

The average benchmark scores place the Atom at 5601 and the i9-10900KF at 5316. This is a notable inversion: the Atom has a higher average score than the i9, yet loses every direct comparison. This occurs because the Atom's benchmark suite is weighted toward its own workload profile, and the i9's suite includes tests like Geekbench and 3DMark that are not present in the Atom's record. The percentile rankings are close (61st for the Atom, 60th for the i9), indicating that the i9's high multi-core scores are offset by a broader field of competitors. However, in any direct comparison, the i9 wins outright.

For a buyer, the decision is straightforward. If the requirement is a low-power, compact, always-on processor for edge computing or IoT gateways, the Atom x7433RE is the only rational pick. If the requirement is a desktop or workstation CPU for software compilation, video encoding, or scientific computing, the Core i9-10900KF dominates. The i9 is unlocked for overclocking, while the Atom is locked. The i9 supports dual-channel memory and has more PCIe lanes, but the Atom supports both DDR4 and DDR5.

Architecture Differences

The two processors share a manufacturer but diverge in nearly every other architectural detail.

Process Node and Generation: The Atom x7433RE is built on a 10 nm process, using the Amston Lake architecture with Gracemont cores. The Core i9-10900KF is built on a 14 nm process, using the Comet Lake architecture. The Atom is a newer design, released in April 2024, while the i9 was released in April 2020. The i9 is marked as end-of-life, while the Atom is active in production.

Cores and Threads: The Atom has 4 cores and 4 threads, meaning no simultaneous multi-threading. The i9 has 10 cores and 20 threads, offering substantial parallelism. This explains the multi-core benchmark gaps.

Clock Speeds: The Atom has a base clock of 1.50 GHz and a boost clock of 3.40 GHz. The i9 has a base clock of 3.70 GHz and a boost clock of 5.30 GHz. The i9's higher clocks contribute to its single-thread advantage.

Cache Hierarchy: The Atom has 96 KB of L1 cache per core, 2 MB of shared L2 cache, and 6 MB of shared L3 cache. The i9 has 64 KB of L1 per core, 256 KB of L2 per core, and 20 MB of shared L3 cache. The i9's larger L3 cache is beneficial for workloads with large working sets.

Memory and I/O: The Atom supports DDR4 and DDR5, but with a single-channel memory bus and 38.4 GB/s bandwidth. The i9 supports DDR4 only, with a dual-channel bus and 46.9 GB/s bandwidth. The i9 also has more PCIe lanes: 16 CPU-only lanes versus the Atom's 9. The Atom includes integrated UHD Graphics with 32 execution units; the i9 has no integrated graphics (the "KF" suffix). Neither supports ECC memory. The i9 has an unlocked multiplier; the Atom does not.

Power and Socket: The Atom has a 9W TDP and uses Intel BGA 1264, a soldered mobile socket. The i9 has a 125W TDP and uses Intel Socket 1200, a desktop LGA socket.

Where Each One Wins

Based on the recorded data, the Core i9-10900KF wins in every measurable scenario. It is faster in both single-core and multi-core Cinebench tests. The i9's 3DMark scores show strong scaling: 850 single-thread, 1685 for 2 threads, 3308 for 4 threads, 6214 for 8 threads, 8225 for 16 threads, and 8919 at max threads. This scaling indicates the i9 can utilize its 20 threads effectively. The Atom has no 3DMark scores in the database, so no comparison is possible there.

The Atom's wins are not in performance but in efficiency and platform features. Its 9W TDP is a fraction of the i9's 125W. It supports DDR5 memory, which the i9 does not. Its BGA socket allows for smaller, lower-profile designs. The Atom's Passmark scores show it can handle specific tasks: 43671 in data compression, 3029 in data encryption, 8582 in floating point math, and 13054 in integer math. These are not high scores, but they indicate the Atom is not idle; it can process data, just slowly compared to the i9.

The i9's Geekbench scores (10733 multi-core, 1744 single-core) further establish its lead in general-purpose computing. The Atom has no Geekbench scores in the database, so the i9 is unopposed there.

FAQ

Q: Which processor is faster in multi-core workloads?

A: The Intel Core i9-10900KF is significantly faster. In Cinebench R23 multi-core, the i9 scores 18867, while the Atom scores 3535. The delta is 81.3% in favor of the i9. The same 81.3% gap appears in Cinebench R15 and R20 multi-core tests.

Q: Which processor is faster in single-core workloads?

A: The Intel Core i9-10900KF. In Cinebench R23 single-core, the i9 scores 2663 versus the Atom's 499. In Cinebench R20 single-core, the i9 scores 1118 versus the Atom's 209. Both show an 81.3% gap.

Q: Does the Atom x7433RE have any performance advantage?

A: No. The Atom wins zero head-to-head benchmarks. However, it has a much lower TDP (9W versus 125W) and supports DDR5 memory, which the i9 does not. It also includes integrated graphics, while the i9 has none.

Q: Can the Core i9-10900KF be overclocked?

A: Yes. The i9 has an unlocked multiplier. The Atom x7433RE does not have an unlocked multiplier.

Q: Which processor is more suitable for a compact, low-power system?

A: The Atom x7433RE. Its 9W TDP, BGA socket, and support for DDR4 and DDR5 make it suitable for embedded or mobile designs. The i9's 125W TDP and LGA socket require a larger cooling solution and motherboard.

Q: How do these processors compare to their nearest rivals?

A: The Atom's average score of 5601 is nearly identical to the Intel Core i7-12700T (5606, 0.1% lower), the AMD Ryzen 7 PRO 3700 (5610, 0.2% lower), and the Intel Core i9-11900KB (5587, 0.3% higher). The i9's average score of 5316 matches the AMD EPYC 7281 (5315, 0% difference) and the AMD Ryzen Threadripper 1920X (5306, 0.2% higher).

Head-to-Head Benchmarks

The head-to-head results are remarkably consistent. Across five Cinebench tests, the Intel Core i9-10900KF wins all of them, and the performance margin is exactly 81.3% in every case. This uniformity suggests the i9's advantage is not workload-specific but fundamental to its architecture.

Cinebench R15 Multi-Core: The i9 scores 1901, the Atom scores 356. The i9 is 81.3% ahead. This is a classic rendering and 3D modeling test. The i9's 10 cores and 20 threads allow it to process far more geometry and physics calculations per second.

Cinebench R20 Multi-Core: The i9 scores 7924, the Atom scores 1484. The gap holds at 81.3%. R20 is more demanding than R15, and the i9 scales well with increased complexity.

Cinebench R20 Single-Core: The i9 scores 1118, the Atom scores 209. The 81.3% gap persists even in a single-threaded test. This is due to the i9's much higher clock speeds (5.30 GHz boost versus 3.40 GHz) and its more powerful core architecture.

Cinebench R23 Multi-Core: The i9 scores 18867, the Atom scores 3535. The i9's score is 5.3 times higher than the Atom's. R23 is the current standard for CPU rendering benchmarks, and the i9 clearly handles it with ease.

Cinebench R23 Single-Core: The i9 scores 2663, the Atom scores 499. The i9 is 5.3 times faster here as well. This is a substantial lead for any task that relies on a single thread, such as light spreadsheet work or basic scripting.

The 3DMark tests for the i9 show a clear scaling pattern: 850 single-thread, 1685 for 2 threads, 3308 for 4 threads, 6214 for 8 threads, 8225 for 16 threads, and 8919 at max threads. The increase from 16 to max threads is modest (8.4%), indicating that the i9's 20 threads are mostly saturated by 16 threads. The Atom has no 3DMark data, so no direct comparison exists, but the i9's lowest 3DMark score (850) is higher than the Atom's highest Cinebench multi-core score (3535) in a different test suite, illustrating the i9's overall dominance.

The Atom's Passmark scores provide context for its intended role. A data compression score of 43671 is respectable, but it falls far short of what a desktop processor could achieve. The Atom's physics score of 323 and its prime number finding score of 19 are low, indicating limited computational intensity. The i9 has no Passmark scores in the database, so a direct comparison is not possible, but the Cinebench results are sufficient to establish the hierarchy.