Intel Atom x7405C vs Intel Xeon Gold 6154 Comparison

The Intel Atom x7405C and Intel Xeon Gold 6154 occupy opposite ends of the performance spectrum, and the benchmark data reflects this stark divide. The Atom x7405C is a low-power, mobile-oriented processor built on a modern 10 nm process, while the Xeon Gold 6154 is a high-core-count server/workstation part built on the older 14 nm node. Across all six head-to-head benchmark tests recorded in the database, the Xeon Gold 6154 emerges victorious, though the two processors serve fundamentally different deployment scenarios. The data shows a complete sweep for the Xeon, but a closer examination of the metrics reveals that each chip has a distinct purpose in the broader hardware landscape.

Where Each One Wins

The head-to-head benchmark results are unambiguous: the Intel Xeon Gold 6154 wins every single recorded test. There is no category in the comparison where the Atom x7405C takes a lead. The Cinebench suite, which includes R15, R20, and R23 in both single-core and multi-core variants, all favor the Xeon Gold 6154 by a margin of at least 81.1%. This is a complete domination in raw compute performance.

However, the Atom x7405C wins in the context of its intended market segment. Its 12 W TDP is a fraction of the Xeon's 200 W TDP, and its mobile market segment designation along with a compact BGA 1264 socket make it suitable for low-power embedded or portable applications where sustained multi-threaded throughput is not the primary goal. The Xeon Gold 6154, with its 18 cores and 36 threads, is clearly built for server and workstation workloads that scale with core count. The data indicates that the Xeon's 200 W power budget buys massive parallel performance, while the Atom's 12 W budget buys efficiency and mobility. In short, the Xeon wins all compute benchmarks, but the Atom wins on power efficiency and form factor suitability.

Architecture Differences

The architectural gap between these two processors is substantial. The Atom x7405C is based on the Amston Lake architecture with a 10 nm process node, utilizing Gracemont cores. It features 4 cores and 4 threads, with a base clock of 1.70 GHz and a boost clock of 3.40 GHz. Its cache hierarchy includes 96 KB of L1 cache per core, 2 MB of shared L2 cache, and 6 MB of shared L3 cache. Memory support includes both DDR4 and DDR5, operating on a single-channel memory bus with a bandwidth of 38.4 GB/s. Notably, it does not support ECC memory, and it provides PCIe Gen 3 with 9 lanes (CPU only). The integrated graphics are listed as N/A, and it is a mobile market segment part with an active production status.

The Xeon Gold 6154, in contrast, is built on the Skylake-SP architecture using a 14 nm process node. It has 18 cores and 36 threads, with a base clock of 3.00 GHz and a boost clock of 3.70 GHz. The cache layout differs significantly: 64 KB of L1 cache per core, 1 MB of L2 cache per core, and a large 24.75 MB of shared L3 cache. The transistor count is listed at 8,000 million. It supports DDR4 memory and includes ECC memory support, a critical feature for server reliability. The market segment is Server/Workstation, and the socket is Intel Socket 3647. The Xeon's 200 W TDP is over 16 times higher than the Atom's 12 W TDP, reflecting the immense power draw required to feed its additional cores and higher clock speeds.

The process node difference is noteworthy: the Atom uses a more modern 10 nm process compared to the Xeon's 14 nm. This explains why the Atom can achieve a much lower TDP despite having a boost clock of 3.40 GHz, which is not far off the Xeon's 3.70 GHz boost. The Atom's single-channel memory bus and lack of ECC support position it firmly in the mobile and entry-level space, while the Xeon's larger cache, ECC support, and server socket position it for enterprise workloads.

Head-to-Head Benchmarks

The Cinebench results paint a clear picture of the performance differential. In Cinebench R15 multi-core, the Xeon Gold 6154 scores 2370 against the Atom's 446, a delta of -81.2% for the Atom. The single-core R15 test shows a similar pattern: the Xeon scores 334, the Atom scores 62, a delta of -81.4%. These margins are nearly identical, indicating that the Xeon's advantage is not just about core count but also about per-core performance.

Moving to Cinebench R20, the Xeon Gold 6154 scores 9878 in multi-core, while the Atom manages 1862, a delta of -81.2%. In single-core R20, the Xeon scores 1394 versus the Atom's 262, again a delta of -81.2%. The consistency of these deltas across different Cinebench versions suggests a stable performance ratio between the two chips.

Cinebench R23 continues the trend. The Xeon Gold 6154 achieves a multi-core score of 23521, compared to the Atom's 4435, a delta of -81.1%. In single-core R23, the Xeon scores 3320, the Atom scores 626, a delta of -81.1%. The Xeon is roughly 5.3 times faster in multi-core R23 (23521 vs 4435) and approximately 5.3 times faster in single-core R23 (3320 vs 626). The single-core dominance is particularly telling: even with just one thread active, the Xeon's higher base clock of 3.00 GHz and boost of 3.70 GHz, combined with its Skylake core design, deliver a significant edge over the Atom's Gracemont cores.

The Atom's average benchmark score is 6568, with a percentile rank of 62 among all CPUs. Its nearest rivals include the Intel Core i5-13500E (avg score 6586, delta -0.3%), the Intel Core i9-7960X (avg score 6533, delta 0.5%), and the Intel Core i9-10940X (avg score 6605, delta -0.6%). This places the Atom in a surprisingly competitive position relative to older high-end desktop parts, despite its modest 4-core configuration.

The Xeon Gold 6154 has an average benchmark score of 6803, with a percentile rank of 63. Its nearest rivals include the Intel Core i7-12700E (avg score 6776, delta 0.4%), the AMD Ryzen Threadripper 2970WX (avg score 6760, delta 0.6%), the AMD Athlon Silver 10 (avg score 6849, delta -0.7%), and the AMD Athlon X4 970 (avg score 6850, delta -0.7%). The Xeon's percentile rank of 63 is only one point higher than the Atom's 62, which means that despite the Xeon's massive lead in Cinebench, the overall average benchmark score difference is relatively small (6803 vs 6568, about 3.6% higher).

This apparent contradiction is explained by the fact that the Atom's benchmark suite includes additional PassMark tests, such as data compression (score 56317), data encryption (4004), extended instructions (2771), find prime numbers (22), floating point math (9063), integer math (14669), multithread (5218), physics (460), random string sorting (8089), and single-thread (1675). These tests contribute to the Atom's average score, and in some of these, the Atom's performance is respectable relative to its class. The Xeon's benchmark suite in the database, however, only includes the six Cinebench tests, which are all heavily multi-threaded and favor the 18-core part.

The Verdict

Based strictly on the recorded data, the Intel Xeon Gold 6154 is the superior processor in every measured compute benchmark. It wins all six Cinebench tests with deltas of at least -81.1% against the Atom. For any workload that relies on multi-threaded rendering, simulation, or server-side processing, the Xeon Gold 6154 is the clear choice, provided the 200 W TDP and Socket 3647 platform are acceptable.

The Intel Atom x7405C, however, has its own domain. Its 12 W TDP is dramatically lower, making it suitable for fanless or battery-powered designs. Its mobile market segment and BGA 1264 socket indicate a focus on compact, low-power systems. It does not support ECC memory, so it is not aimed at reliability-critical server roles. The Atom's percentile rank of 62 and average score of 6568 show that it is not a weak processor in absolute terms; it just falls far behind the Xeon in heavy compute tasks. Users who need a low-power, always-on processor for edge computing or embedded applications should consider the Atom. Users who need raw throughput for server workloads should choose the Xeon.

The launch MSRP of the Atom x7405C is $57, which reflects its entry-level positioning, though pricing comparisons are not part of this analysis.

FAQ

Q: Which processor wins in multi-core Cinebench tests?

A: The Intel Xeon Gold 6154 wins all multi-core tests. In Cinebench R23 multi-core, it scores 23521 versus the Atom's 4435, a delta of -81.1% for the Atom.

Q: Does the Atom x7405C win any benchmark against the Xeon Gold 6154?

A: No. In the six head-to-head benchmarks recorded, the Xeon Gold 6154 wins every test, with deltas ranging from -81.1% to -81.4% for the Atom.

Q: What is the difference in power consumption between the two?

A: The Atom x7405C has a TDP of 12 W, while the Xeon Gold 6154 has a TDP of 200 W. The Xeon consumes over 16 times more power.

Q: Does the Atom x7405C support ECC memory?

A: No, the Atom x7405C does not support ECC memory. The Xeon Gold 6154 does support ECC memory.

Q: What are the core counts for each processor?

A: The Atom x7405C has 4 cores and 4 threads. The Xeon Gold 6154 has 18 cores and 36 threads.

Q: How do their average benchmark scores compare?

A: The Atom x7405C has an average benchmark score of 6568, while the Xeon Gold 6154 has an average score of 6803. The Xeon is about 3.6% higher in this metric, despite its much larger lead in Cinebench tests.