Intel Atom x7835RE vs Intel Core i9-13900E Comparison

Head-to-Head Benchmarks

The benchmark data paints an unambiguous picture: the Intel Core i9-13900E dominates the Intel Atom x7835RE across every single recorded test. In the six Cinebench comparisons available, the Core i9 wins all of them, with deltas consistently hovering around -82%. That means the Atom x7835RE scores roughly 82% lower than the Core i9 in each workload, a massive gap that reflects the fundamental difference in design intent between these two processors.

Starting with multi-core performance, the Core i9-13900E posts a Cinebench R23 multi-core score of 34244, while the Atom x7835RE manages 6051. That is a delta of -82.3%, meaning the Atom delivers barely 18% of the Core i9's output. The pattern repeats in Cinebench R20 multi-core: 14382 for the Core i9 versus 2541 for the Atom, again a -82.3% delta. In Cinebench R15 multi-core, the Core i9 scores 3451 against the Atom's 609, a -82.4% gap. The data is consistent: no matter which version of Cinebench is used, the Core i9 is roughly five to six times faster in multi-threaded rendering.

Single-core results tell the same story, just with slightly different margins. In Cinebench R23 single-core, the Core i9 scores 4834 and the Atom scores 854, a -82.3% delta. Cinebench R20 single-core shows 2030 versus 358, a -82.4% delta. Cinebench R15 single-core shows 487 versus 85, a -82.5% delta. The Core i9's single-thread advantage is almost exactly proportional to its multi-thread advantage, which suggests the per-core performance gap is the dominant factor, not just core count.

The wins are entirely one-sided. The database records 0 wins for the Atom x7835RE and 6 wins for the Core i9-13900E. There is no benchmark in this comparison where the Atom comes out ahead, even by a small margin. The closest the Atom gets is still a -82.3% delta, which is not remotely competitive.

One thing to note: the average benchmark scores in the database tell a slightly different story than the head-to-head Cinebench results. The Atom x7835RE has an average benchmark score of 9430, while the Core i9-13900E has an average of 8676. That seems contradictory, but it is because the average score includes a wider set of tests, many of which are not shared between the two chips. The head-to-head tests are the only valid direct comparisons, and those all favor the Core i9 overwhelmingly. The percentile rankings are identical at 65 for both, but that is a measure against all CPUs, not against each other.

The Verdict

The data is clear: the Intel Core i9-13900E is the superior processor in every measured benchmark. If you are choosing between these two for raw performance, the Core i9 is the only option that makes sense. It wins all six head-to-head tests by margins of over 80%, which is not a small edge but a generational chasm.

Who should pick the Atom x7835RE? Only someone who prioritizes extreme power efficiency and a mobile form factor. The Atom has a TDP of 12 watts, compared to the Core i9's 65 watts. That is a five-fold difference in power draw, which matters in fanless or battery-powered designs. The Atom also uses a single-channel memory bus and a smaller L3 cache (6 MB shared versus 36 MB shared). But for any compute-heavy task, the Core i9 wins so decisively that the Atom's efficiency advantage cannot compensate.

Who should pick the Core i9-13900E? Anyone who needs serious multi-threaded throughput, high single-core speed, or ECC memory support. The Core i9 supports ECC memory, the Atom does not. The Core i9 also has 24 cores and 32 threads versus the Atom's 8 cores and 8 threads. The Core i9 is a desktop part on Socket 1700, while the Atom is a mobile part on BGA 1264. If the workload fits on a desktop platform, the Core i9 is the obvious choice.

The verdict is not nuanced. The Core i9-13900E is faster in every way that the benchmark suite measures. The Atom x7835RE is a low-power embedded or mobile chip, and the Core i9 is a high-end desktop processor. They are not in the same performance class.

Architecture Differences

The two processors come from completely different architectural lineages. The Atom x7835RE is built on Amston Lake, a codename that belongs to Intel's Atom family, specifically the Gracemont microarchitecture. The Core i9-13900E is built on Raptor Lake, specifically Raptor Lake-S, and belongs to Intel's Core 13th Gen family. Both are manufactured on a 10 nm process node, so the transistor geometry is the same, but the design philosophy diverges sharply.

The Atom uses a modular cache layout: 96 KB of L1 per core, 2 MB of L2 per module, and 6 MB of L3 shared. The Core i9 uses 80 KB of L1 per core, 2 MB of L2 per core, and 36 MB of L3 shared. The L2 cache organization is particularly telling: the Atom groups cores into modules, while the Core i9 gives each core its own 2 MB L2. That per-core L2 allocation is one reason the Core i9's single-thread performance is so much higher.

The Core i9 also has a significantly larger die at 257 mm², while the Atom's die size is not recorded in the database. The Atom is a small, low-power design optimized for efficiency; the Core i9 is a large, high-power design optimized for throughput.

The integrated graphics differ as well. The Atom has UHD Graphics 32EU, while the Core i9 has UHD Graphics 770. The Core i9's graphics solution is more capable, though the exact performance difference is not quantified in the recorded data.

Memory support is another architectural split. Both support DDR4 and DDR5, but the Atom uses a single-channel memory bus with a recorded bandwidth of 38.4 GB/s, while the Core i9 uses a dual-channel memory bus with no bandwidth figure recorded. The Core i9 also supports ECC memory, which the Atom does not. That makes the Core i9 suitable for workstation or server tasks where memory integrity is critical.

PCIe connectivity is a major divergence. The Atom supports PCIe Gen 3 with 9 lanes (CPU only), while the Core i9 supports PCIe Gen 5 with 16 lanes (CPU only). The Core i9 offers both a newer standard and more lanes, which matters for high-bandwidth peripherals like GPUs and NVMe storage.

Specification Differences

The two processors differ in nearly every major specification category. The Atom x7835RE has 8 cores and 8 threads, while the Core i9-13900E has 24 cores and 32 threads. The base clock is 1.30 GHz for the Atom and 1800.00 MHz for the Core i9. The boost clock is 3.60 GHz for the Atom and 5.20 GHz for the Core i9. The Core i9 boosts significantly higher, which contributes to its single-thread dominance.

Power consumption is a stark contrast. The Atom has a TDP of 12 watts, while the Core i9 has a TDP of 65 watts. That is a 53-watt difference, which is substantial for thermal design and cooling requirements.

The socket is different: the Atom uses Intel BGA 1264, a soldered mobile socket, while the Core i9 uses Intel Socket 1700, a desktop LGA socket. The Atom is a mobile segment part, the Core i9 is a desktop segment part.

The release dates differ by about fifteen months. The Core i9-13900E was released on 2023-01-03, while the Atom x7835RE was released on 2024-04-07. Both are listed as Active in production status.

The launch MSRP for the Atom x7835RE is $127. The Core i9-13900E has no launch MSRP recorded in the database. Neither processor has an unlocked multiplier.

The part numbers are distinct: SRNER for the Atom, SRMG2 for the Core i9.

The memory bus width differs (single-channel for the Atom, dual-channel for the Core i9), and the L3 cache differs (6 MB shared for the Atom, 36 MB shared for the Core i9). The Atom's L1 cache is larger per core at 96 KB versus 80 KB, but that does not translate into performance advantage in any recorded benchmark.

FAQ

Q: Which processor has more cores?

A: The Intel Core i9-13900E has 24 cores and 32 threads, while the Intel Atom x7835RE has 8 cores and 8 threads.

Q: Does the Atom x7835RE support ECC memory?

A: No, ECC memory is not supported on the Atom x7835RE. The Core i9-13900E does support ECC memory.

Q: What is the TDP difference between the two?

A: The Atom x7835RE has a TDP of 12 watts, while the Core i9-13900E has a TDP of 65 watts. The Atom consumes significantly less power.

Q: Which processor has the higher boost clock?

A: The Core i9-13900E boosts to 5.20 GHz, while the Atom x7835RE boosts to 3.60 GHz.

Q: Are both processors still in production?

A: Yes, both the Atom x7835RE and the Core i9-13900E are listed as Active in production status.

Q: Which processor has a larger L3 cache?

A: The Core i9-13900E has 36 MB of shared L3 cache, while the Atom x7835RE has 6 MB of shared L3 cache.

Where Each One Wins

The Core i9-13900E wins in every single benchmark category recorded. It is faster in multi-core Cinebench R15, R20, and R23, and faster in single-core versions of all three tests. The deltas are all around -82%, meaning the Atom scores only about 18% of the Core i9's result. For any workload that involves rendering, encoding, compiling, or heavy number crunching, the Core i9 is the clear pick.

The Atom x7835RE has no benchmark wins in the head-to-head comparison. However, it does have qualitative advantages that the data supports indirectly. Its TDP of 12 watts means it can run in passively cooled or battery-powered devices where the Core i9's 65 watt TDP would be impractical. Its BGA 1264 socket means it is soldered directly to a board, which is typical for embedded or mobile applications. Its single-channel memory bus is a limitation, but it also reduces complexity and power draw.

If the use case is a small, low-power appliance, a fanless industrial PC, or a mobile device that needs x86 compatibility with minimal heat output, the Atom x7835RE is the better fit despite losing every benchmark. If the use case is a desktop workstation, a content creation machine, or any system where performance is the priority, the Core i9-13900E is the only rational choice.

The database also shows that the Core i9's average benchmark score (8676) is lower than the Atom's (9430), but that is due to different test sets being included in the averages. The head-to-head tests are the only valid comparisons, and those all favor the Core i9. The Core i9 also has a higher percentile ranking context: its nearest rivals include the Intel Core i7-8565U (delta 0.1%), the Intel Core i5-8365U (delta -0.4%), and the AMD EPYC 7601 (delta 0.7%). The Atom's nearest rivals are much higher-end parts, like the Intel Xeon Platinum 8180 (delta 0.3%) and the AMD Ryzen Threadripper PRO 5945WX (delta 0.9%), which reflects the different test suites used for each chip.

In practical terms, choose the Core i9 for performance, the Atom for power efficiency and compactness. The benchmark data does not support any other conclusion.