CPU Comparison

The Intel Atom x7405C and Intel Core i9-7960X represent two extremes of Intel’s product stack: a low-power 4-core embedded mobile chip versus a 16-core high-end desktop processor. Despite their differences, benchmark data places them within 1% of each other in average score, making their comparison a study in contrasting strengths. The Atom x7405C, released in 2024, is an active, low-power part, while the Core i9-7960X, released in 2017, is an end-of-life desktop flagship. The data shows a clear split: the i9-7960X dominates in raw compute, while the Atom x7405C counters with efficiency and system-level throughput in specific workloads.

FAQ

Q: How do the two processors compare in average benchmark score?

A: The Intel Atom x7405C has an average benchmark score of 6568, while the Intel Core i9-7960X scores 6533. The delta is 0.5% in favor of the Atom, a statistically negligible difference that places them as direct rivals.

Q: Which processor has more cores and threads?

A: The Intel Core i9-7960X has 16 cores and 32 threads, four times the core count and eight times the thread count of the Intel Atom x7405C, which has 4 cores and 4 threads.

Q: What is the performance difference in multi-core Cinebench R23?

A: The Core i9-7960X scores 23413 in Cinebench R23 multi-core, which is 81.1% higher than the Atom x7405C’s score of 4435. The i9-7960X is the clear winner in this multi-threaded workload.

Q: Does the Atom x7405C have any benchmark wins over the i9-7960X?

A: In the head-to-head benchmark suite provided, the Atom x7405C has 0 wins out of 6 tests. The i9-7960X wins all six Cinebench tests (R15, R20, and R23, both single and multi-core).

Q: What is the power consumption difference?

A: The Intel Atom x7405C has a TDP of 12 watts, while the Intel Core i9-7960X has a TDP of 165 watts. The Atom’s power draw is 13.75 times lower than the i9’s.

Q: Which processor supports more memory channels?

A: The Intel Core i9-7960X supports quad-channel DDR4 memory, while the Intel Atom x7405C supports single-channel DDR4 and DDR5 memory. The i9-7960X’s memory bandwidth is 85.3 GB/s, compared to 38.4 GB/s for the Atom.

Architecture Differences

The two processors come from entirely different architectural lineages. The Intel Atom x7405C is built on the Amston Lake architecture, using the Gracemont core microarchitecture, and is fabricated on a 10 nm process node. It is a mobile-market part with a 12-watt TDP, designed for efficiency. In contrast, the Intel Core i9-7960X uses the Skylake-X architecture (codename Skylake), fabricated on a 14 nm process node, and is a desktop-market part with a 165-watt TDP. The i9-7960X also has a significantly larger die size at 484 mm², while the Atom’s die size is not listed.

Core complexity differs dramatically. The Atom x7405C has 4 cores and 4 threads, with 96 KB of L1 cache per core and 2 MB of shared L2 cache. The i9-7960X has 16 cores and 32 threads, with 64 KB of L1 cache per core and 1 MB of L2 cache per core. The L3 cache also differs: the Atom has 6 MB shared, while the i9-7960X has 22 MB shared. The i9-7960X’s per-core L2 is larger, but the Atom’s L1 per core is larger, suggesting different cache hierarchy priorities.

Memory and I/O features are similarly divergent. The Atom x7405C supports both DDR4 and DDR5 memory over a single-channel bus, with a bandwidth of 38.4 GB/s. The i9-7960X supports only DDR4 over a quad-channel bus, with a bandwidth of 85.3 GB/s. PCIe support also differs: the Atom offers Gen 3 with 9 lanes, while the i9-7960X offers Gen 3 with 44 lanes. The i9-7960X has an unlocked multiplier, whereas the Atom does not. The Atom lacks integrated graphics, as does the i9-7960X, according to its listed integrated graphics field. The Atom is actively produced, while the i9-7960X is end-of-life.

Head-to-Head Benchmarks

The head-to-head benchmark data is decisive. The Intel Core i9-7960X wins all six tested workloads, with a consistent delta of approximately -81.1% for the Atom across the board. In Cinebench R15 multi-core, the i9-7960X scores 2359 against the Atom’s 446, a margin of 81.1%. The single-core R15 test shows a similar pattern: 333 for the i9-7960X versus 62 for the Atom, also an 81.4% deficit for the Atom. These deltas indicate that the i9-7960X is not just faster but uniformly faster across both single-threaded and multi-threaded Cinebench workloads.

Moving to Cinebench R20, the gap persists. The i9-7960X scores 9833 in multi-core versus 1862 for the Atom, an 81.1% difference. In single-core R20, the i9-7960X scores 1388 versus 262 for the Atom, again 81.1% behind. The most recent Cinebench R23 results show the i9-7960X at 23413 multi-core and 3305 single-core, while the Atom scores 4435 and 626 respectively. The delta remains pinned at 81.1% for both tests. This consistency across three generations of Cinebench suggests that the performance advantage is structural, not workload-specific.

The Atom x7405C does have other benchmark data not in the head-to-head set, including PassMark tests. It scores 56317 in data compression, 4004 in data encryption, 9063 in floating point math, and 14669 in integer math. These scores are not directly compared to the i9-7960X, which lacks corresponding PassMark entries in the provided data. However, the i9-7960X has Geekbench scores of 10307 multi-core and 1324 single-core, which are also not part of the head-to-head comparison. The head-to-head suite is exclusively Cinebench, and the i9-7960X dominates it entirely.

Specification Differences

The specification sheets for the two processors show few shared fields. The core counts are 4 for the Atom versus 16 for the i9-7960X. Thread counts are 4 versus 32. Base clocks are 1.70 GHz for the Atom and 2.80 GHz for the i9-7960X. Boost clocks are 3.40 GHz versus 4.40 GHz. TDP is 12 watts versus 165 watts. The sockets are entirely different: Intel BGA 1264 for the Atom, Intel Socket 2066 for the i9-7960X.

Cache configurations are not comparable due to different per-core allocations. The Atom has 96 KB L1 per core, 2 MB shared L2, and 6 MB shared L3. The i9-7960X has 64 KB L1 per core, 1 MB L2 per core, and 22 MB shared L3. Memory support differs: the Atom supports DDR4 and DDR5 over a single-channel bus (38.4 GB/s), while the i9-7960X supports only DDR4 over a quad-channel bus (85.3 GB/s). PCIe lanes are 9 for the Atom versus 44 for the i9-7960X, both Gen 3.

The process nodes differ (10 nm for the Atom, 14 nm for the i9-7960X), as do the production statuses (Active versus End-of-life) and release dates (2024-04-07 versus 2017-08-31). The Atom’s launch MSRP is $57, while the i9-7960X’s launch MSRP is $1699. The i9-7960X has an unlocked multiplier; the Atom does not. The i9-7960X has a die size of 484 mm², while the Atom’s is not listed. Neither supports ECC memory.

The Verdict

The data presents an unambiguous performance hierarchy. The Intel Core i9-7960X wins every head-to-head benchmark by a margin of roughly 81%, regardless of single-core or multi-core testing. If raw compute throughput is the sole criterion, the i9-7960X is the only choice. Its 16 cores and 32 threads, combined with a 4.40 GHz boost clock, deliver 23413 in Cinebench R23 multi-core, a score the Atom cannot approach. The Atom’s 4 cores and 4 threads cap its multi-threaded potential at 4435 in the same test.

However, the average benchmark scores tell a different story. The Atom x7405C’s average score of 6568 is 0.5% higher than the i9-7960X’s 6533, placing them in the same percentile (62nd) among all CPUs. This suggests that the Atom’s strength lies in workloads not covered by the head-to-head suite, such as data compression (56317) and integer math (14669). The i9-7960X lacks comparable PassMark data, so these wins cannot be directly verified, but the average scores indicate the Atom is competitive in aggregate.

The verdict depends on the use case. For compute-heavy applications like rendering or simulation, the i9-7960X is the clear winner. For efficiency-driven tasks or workloads that favor the Atom’s PassMark profile, the Atom x7405C is viable. The i9-7960X offers an unlocked multiplier, which the Atom lacks, making it better for overclocking. The Atom’s 12-watt TDP versus the i9-7960X’s 165-watt TDP is a critical differentiator for power-constrained environments. The data does not support a universal winner; it supports a workload-dependent choice.

Where Each One Wins

The Intel Core i9-7960X wins decisively in all rendering and single-threaded compute benchmarks from the Cinebench suite. Its scores in R15 single-core (333), R20 single-core (1388), and R23 single-core (3305) are each roughly 81% higher than the Atom’s corresponding scores (62, 262, and 626). For multi-threaded workloads, the i9-7960X’s 16-core/32-thread configuration delivers 2359 in R15, 9833 in R20, and 23413 in R23, all 81.1% ahead of the Atom. This makes the i9-7960X the preferred part for video rendering, 3D modeling, and any application that scales with core count.

The Intel Atom x7405C, despite losing all head-to-head tests, shows competitive average scores and specific PassMark strengths. Its data compression score of 56317 is notable, as is its floating point math score of 9063 and integer math score of 14669. These are not compared to the i9-7960X, but the Atom’s average benchmark score of 6568 slightly exceeds the i9-7960X’s 6533, indicating that the Atom excels in system-level tasks beyond pure CPU math. The Atom’s 12-watt TDP makes it suitable for fanless or battery-powered designs, while the i9-7960X’s 165-watt TDP requires substantial cooling. The Atom also supports DDR5 memory, which the i9-7960X does not, and its single-channel memory bus is sufficient for its lower bandwidth needs.

In practical terms, the i9-7960X is the choice for a desktop workstation where performance is paramount. The Atom x7405C is the choice for an embedded or mobile system where power efficiency and modern memory support are more important than raw compute. The data shows the i9-7960X wins 6 out of 6 head-to-head tests, but the Atom’s average score advantage of 0.5% and its active production status suggest it is the more future-proof part for its niche. Neither processor is a substitute for the other; they serve different markets with different priorities.