CPU Comparison

The Intel Core i3-1210U and Intel Atom x7809C are two mobile processors with nearly identical overall average scores, yet they achieve that parity through radically different performance profiles. The Core i3-1210U wins the majority of head-to-head tests, leveraging superior single-thread speed and higher peak clocks, while the Atom x7809C counters with decisive victories in specialized workloads like data compression and encryption. Benchmark results indicate the Core i3-1210U is the more versatile performer, but the Atom x7809C holds specific advantages that may matter for targeted use cases.

Head-to-Head Benchmarks

The Core i3-1210U dominates the synthetic rendering and general compute tests. In Cinebench R23 multi-core, it scores 8413 against the Atom’s 7997, a 5.2% advantage. The single-core gap in the same test is nearly identical at 5.1% (1187 vs 1129). This pattern repeats across the entire Cinebench suite: R15 multi-core shows 847 vs 805 (5.2% lead), R20 multi-core shows 3533 vs 3358 (5.2% lead), and R15 single-core shows 119 vs 113 (5.3% lead). The consistency of these margins suggests architectural efficiency rather than clock speed alone drives the Core i3’s edge.

The largest single-thread victory for the Core i3 comes in PassMark single-thread testing, where it scores 3354 versus the Atom’s 1462, a staggering 129.4% advantage. This is the widest delta in the entire comparison and highlights the fundamental difference in per-core capability. The Core i3 also excels in math-heavy tasks: PassMark floating-point math shows a 33.4% lead (23815 vs 17856), integer math shows 34445 vs 28946 (19% ahead), and find prime numbers shows a 75.9% blowout (51 vs 29). Extended instructions favor the Core i3 by 6.2% (5852 vs 5509), and the multi-thread test shows an 8.7% lead (10228 vs 9409).

The Atom x7809C, however, wins three tests convincingly. PassMark data compression shows the Atom at 111525 versus 102965, a 7.7% advantage. Data encryption is more pronounced: 7832 vs 6348, an 18.9% win for the Atom. Random string sorting delivers the Atom’s largest victory at 15728 vs 11727, a 25.4% margin. These wins are not marginal; they indicate the Atom’s Gracemont cores have dedicated strengths in specific data-processing routines that outpace the Core i3’s hybrid architecture.

Overall, the Core i3-1210U wins 14 of the 17 head-to-head benchmarks, while the Atom takes 3. The average benchmark scores reflect this split: the Core i3 averages 12795 against the Atom’s 12607, a difference of roughly 1.5%. Both processors sit within the same percentile tier, 68th for the Core i3 versus 67th for the Atom, meaning they occupy nearly identical positions in the global CPU landscape.

Architecture Differences

The two processors come from different architectural families despite sharing a 10 nm process node from Intel. The Core i3-1210U is built on Alder Lake (codename Alder Lake-U) and belongs to the Core i3 generation, while the Atom x7809C uses Amston Lake architecture with the Atom (Gracemont) generation. This distinction matters: Alder Lake is a hybrid design, whereas Amston Lake is a homogeneous Atom lineup.

Core counts differ meaningfully. The Core i3-1210U packs 6 cores and 8 threads, implying a hybrid layout with performance and efficiency cores. The Atom x7809C offers 8 cores and 8 threads, with no hyper-threading. Despite having fewer cores, the Core i3 achieves higher multi-thread scores in most tests, indicating its performance cores are substantially more capable than the Atom’s Gracemont cores per-thread.

Cache hierarchies diverge significantly. The Core i3-1210U has 80 KB of L1 per core, 1.25 MB of L2 per core, and 10 MB of shared L3. The Atom x7809C provides 96 KB of L1 per core, 2 MB of L2 per module, but only 6 MB of shared L3. The Core i3’s larger L3 pool (10 MB vs 6 MB) likely contributes to its stronger performance in latency-sensitive workloads, while the Atom’s larger per-core L1 and per-module L2 may explain its compression and sorting advantages.

Clock speeds favor the Core i3 in the upper range but the Atom at the base. The Core i3-1210U runs at a 1000 MHz base clock with a 4.40 GHz boost, while the Atom x7809C starts at 2.00 GHz base but boosts to only 3.60 GHz. The massive boost difference (800 MHz) directly explains the Core i3’s 129.4% single-thread advantage. Thermal design power differs sharply: the Core i3 is rated at 9W TDP versus the Atom’s 25W, meaning the Core i3 delivers more performance per watt despite its lower power envelope.

Memory and I/O also diverge. Both support DDR4 and DDR5, but the Core i3 uses dual-channel memory while the Atom is single-channel with a fixed 38.4 GB/s bandwidth. The Core i3 offers PCIe Gen 4, whereas the Atom is limited to PCIe Gen 3 with 9 lanes (CPU only). Integrated graphics are present only on the Core i3 (UHD Graphics 64EU); the Atom has no iGPU. The Core i3 uses socket Intel BGA 1781, while the Atom uses Intel BGA 1264.

Where Each One Wins

The Core i3-1210U is the clear winner for general-purpose computing and any workload that benefits from high single-thread performance. Its 129.4% lead in PassMark single-thread and 75.9% lead in prime-number finding make it the obvious choice for everyday responsiveness, office applications, and light creative work. The 33.4% advantage in floating-point math and 19% in integer math suggest it handles scientific calculations, financial modeling, and code compilation more effectively. Physics simulation (13.8% ahead at 781 vs 686) and multi-threaded tasks (8.7% ahead) further cement its versatility.

The Atom x7809C wins specifically in data compression (7.7% ahead), data encryption (18.9% ahead), and random string sorting (25.4% ahead). These workloads are common in server-side data processing, database operations, and security-related tasks. The Atom’s 8 physical cores with larger per-core L1 cache appear optimized for throughput in these narrow routines. For embedded or edge deployments where these specific operations dominate, the Atom would deliver measurable gains.

The Core i3-1210U also wins in extended instructions (6.2% ahead), indicating better support for modern SIMD and vectorized code. Its dual-channel memory bus and PCIe Gen 4 connectivity provide a more capable platform for peripherals and memory-intensive applications. The presence of integrated graphics on the Core i3 means it can drive displays without a discrete GPU, whereas the Atom requires external graphics hardware.

Specification Differences

• Cores: 6 (Core i3-1210U) vs 8 (Atom x7809C)
• Threads: 8 (Core i3) vs 8 (Atom)
• Base Clock: 1000 MHz (Core i3) vs 2000 MHz (Atom)
• Boost Clock: 4.40 GHz (Core i3) vs 3.60 GHz (Atom)
• TDP: 9W (Core i3) vs 25W (Atom)
• Socket: Intel BGA 1781 (Core i3) vs Intel BGA 1264 (Atom)
• Architecture: Alder Lake (Core i3) vs Amston Lake (Atom)
• Codename: Alder Lake-U (Core i3) vs Amston Lake (Atom)
• L1 Cache: 80 KB per core (Core i3) vs 96 KB per core (Atom)
• L2 Cache: 1.25 MB per core (Core i3) vs 2 MB per module (Atom)
• L3 Cache: 10 MB shared (Core i3) vs 6 MB shared (Atom)
• Memory Bus: Dual-channel (Core i3) vs Single-channel (Atom)
• Memory Bandwidth: Not specified (Core i3) vs 38.4 GB/s (Atom)
• PCIe: Gen 4 (Core i3) vs Gen 3, 9 Lanes CPU only (Atom)
• Integrated Graphics: UHD Graphics 64EU (Core i3) vs N/A (Atom)
• Release Date: 2022-02-22 (Core i3) vs 2024-04-07 (Atom)
• Part Number: Not specified (Core i3) vs SRNEN (Atom)
• Launch MSRP: Not specified (Core i3) vs $117 (Atom)

FAQ

Q: Which processor has better single-core performance?

A: The Core i3-1210U dominates single-core tests. In PassMark single-thread, it scores 3354 versus the Atom’s 1462, a 129.4% advantage. Cinebench R23 single-core shows 1187 vs 1129, a 5.1% lead for the Core i3.

Q: Does the Atom x7809C win any benchmarks?

A: Yes, it wins 3 of 17 head-to-head tests. It outperforms the Core i3 in data compression (111525 vs 102965, 7.7% ahead), data encryption (7832 vs 6348, 18.9% ahead), and random string sorting (15728 vs 11727, 25.4% ahead).

Q: How do their overall average scores compare?

A: The Core i3-1210U has an average benchmark score of 12795, while the Atom x7809C scores 12607. The Core i3 sits in the 68th percentile of all CPUs, and the Atom is in the 67th percentile.

Q: What are the core and thread counts?

A: The Core i3-1210U has 6 cores and 8 threads. The Atom x7809C has 8 cores and 8 threads. Despite fewer cores, the Core i3 wins 14 of 17 benchmarks.

Q: Do both processors support the same memory?

A: Both support DDR4 and DDR5. However, the Core i3 uses dual-channel memory, while the Atom uses single-channel with a specified 38.4 GB/s bandwidth.

Q: Does the Atom x7809C have integrated graphics?

A: No. The Atom has no integrated graphics (N/A). The Core i3-1210U includes UHD Graphics 64EU.

The Verdict

The data clearly favors the Intel Core i3-1210U for the vast majority of workloads. It wins 14 of 17 head-to-head benchmarks, including every Cinebench test and all math-oriented PassMark tests. Its 129.4% lead in single-thread performance and 33.4% advantage in floating-point math make it the superior choice for interactive use, content creation, and general productivity. The 9W TDP combined with integrated graphics and PCIe Gen 4 support further strengthens its position as a more complete mobile processor.

The Intel Atom x7809C is a specialist, not a generalist. Its wins in data compression, encryption, and string sorting point to a clear niche: server-side or embedded workloads that process large volumes of data through these specific routines. The 25W TDP and single-channel memory are drawbacks, but the 8 physical cores and larger per-core L1 cache deliver measurable gains where it matters. Its launch MSRP of $117 provides a price point for consideration, though its lack of integrated graphics and PCIe Gen 3 limitation narrow its platform appeal.

For most users, the Core i3-1210U is the rational pick. Its benchmark advantage spans more categories, its power efficiency is superior (9W vs 25W), and its dual-channel memory and newer PCIe standard offer a more future-proof foundation. Choose the Atom x7809C only if your workload is dominated by the three specific tests it wins, otherwise, the Core i3’s broader competence makes it the safer and more capable processor.