AMD Athlon Silver 7120U vs Intel Core i7-860 Comparison

# Intel Core i7-860 vs AMD Athlon Silver 7120U

The Intel Core i7-860 and AMD Athlon Silver 7120U occupy nearly the same overall position in the benchmark database, with the i7-860 at the 24th percentile of all CPUs and the Athlon Silver at the 23rd percentile. The Intel chip averages 886 points across all benchmarks, while the AMD chip averages 881 points — a margin of just 0.6%. This is not a contest between a clear winner and loser; it is a split decision between two very different designs that happen to land at similar overall performance levels. The i7-860 wins the multi-core tests, the Athlon Silver wins the single-core test, and the choice between them depends entirely on workload priorities and platform constraints.

The Verdict

The Intel Core i7-860 is the pick for multi-threaded workloads. It wins two of the three head-to-head benchmarks, including a decisive 53.9% lead in Cinebench R23 multi-core (2574 vs 1673). Its four cores and eight threads give it a structural advantage in any workload that scales across cores, and the data confirms this: in Cinebench R15 multi-core, it beats the Athlon Silver by 3.6% (259 vs 250), and in Cinebench R23 multi-core, the gap widens dramatically. If your work involves rendering, encoding, or any parallel processing, the i7-860 is the data-backed choice.

The AMD Athlon Silver 7120U is the pick for single-threaded performance and efficiency. It crushes the i7-860 in Cinebench R23 single-core, scoring 886 vs 363 — a 59% advantage for AMD. The Athlon Silver also has a 15W TDP versus the i7-860's 95W TDP, a 6.3x difference in thermal design power. It is an active product with modern architecture, whereas the i7-860 is end-of-life. If your workloads are lightly threaded, if power consumption matters, or if you need a current platform, the Athlon Silver is the sensible choice.

Do not buy either one expecting a general-purpose upgrade. They are comparable in overall percentile ranking (24th vs 23rd), and their nearest rivals cluster around the 881-888 average score range. The i7-860 sits alongside the AMD PRO A8-8650B (887, -0.1%), Intel Pentium G4560T (887, -0.1%), and Intel Xeon X5550 (888, -0.2%). The Athlon Silver sits alongside the Intel Core i3-1000NG4 (881, 0%), AMD Phenom II X6 1035T (881, 0%), and AMD PRO A12-8870E (880, 0.1%). Both chips are firmly in the mid-low tier of the database, and neither will surprise you in demanding applications.

Architecture Differences

The two CPUs come from completely different eras and design philosophies. The Intel Core i7-860 is built on the Nehalem architecture (Lynnfield codename), fabricated on a 45 nm process at Intel's own foundry. It packs 774 million transistors into a 296 mm² die. The AMD Athlon Silver 7120U uses the Zen 2 architecture (Mendocino codename), built on a 6 nm process at TSMC, with a 100 mm² die size. The process node difference — 45 nm vs 6 nm — is a 7.5x reduction in manufacturing feature size, which explains the massive difference in power consumption and thermal output.

Core counts differ substantially. The i7-860 has four cores and eight threads, enabled by Hyper-Threading. The Athlon Silver has two cores and two threads, with no simultaneous multithreading. Cache configurations also diverge: the i7-860 offers 8 MB of shared L3 cache plus 256 KB of L2 per core, while the Athlon Silver offers only 2 MB of shared L3 but doubles the per-core L2 to 512 KB. Both have 64 KB of L1 per core. The i7-860's larger L3 cache is a direct consequence of its four-core design and older architecture; the Athlon Silver's smaller L3 is typical of AMD's low-power mobile parts.

Memory support reflects their respective eras. The i7-860 uses dual-channel DDR3, while the Athlon Silver uses dual-channel LPDDR5 with a rated memory bandwidth of 88.0 GB/s. PCIe connectivity also differs: the i7-860 provides Gen 2 with 16 lanes (CPU only), while the Athlon Silver provides Gen 3 with 4 lanes (CPU only). The Athlon Silver includes integrated Radeon 610M graphics; the i7-860 has no integrated graphics listed. The i7-860 uses Intel Socket 1156, the Athlon Silver uses AMD Socket FT6. Neither chip has an unlocked multiplier, and neither supports ECC memory.

Head-to-Head Benchmarks

Three head-to-head benchmark results separate these two CPUs. The Intel Core i7-860 wins two of them, and the AMD Athlon Silver 7120U wins one. But the margins tell the real story.

In Cinebench R15 multi-core, the i7-860 scores 259 against the Athlon Silver's 250, a 3.6% lead for Intel. This is a modest margin, reflecting the fact that the Athlon Silver's two Zen 2 cores are individually much faster than the i7-860's Nehalem cores, but the i7-860's four-core, eight-thread configuration still wins the aggregate. The gap is close because the Athlon Silver's clock speed (3.50 GHz boost) nearly matches the i7-860's boost clock (3.47 GHz), and the newer architecture compensates for the core deficit in this older test.

In Cinebench R23 multi-core, the i7-860 extends its lead to 53.9%, scoring 2574 vs 1673. This is the single largest performance gap in the dataset. The R23 workload is more demanding and scales better with thread count, which plays directly into the i7-860's four-core, eight-thread advantage. The Athlon Silver's two cores simply cannot keep pace in this heavy multi-threaded workload, despite the architectural efficiency of Zen 2.

In Cinebench R23 single-core, the AMD Athlon Silver 7120U wins decisively, scoring 886 vs 363 — a 59% margin in favor of AMD. This is the inverse of the multi-core result. The Zen 2 architecture's instructions-per-clock advantage, combined with a boost clock of 3.50 GHz, delivers more than double the single-thread performance of the Nehalem-based i7-860, which boosts to 3.47 GHz but with far lower IPC. For any single-threaded task — web browsing, office work, or older games — the Athlon Silver is clearly superior.

Specification Differences

The specification sheet for these two CPUs reads like a generational comparison. The i7-860 has 4 cores and 8 threads; the Athlon Silver has 2 cores and 2 threads. Base clocks are 2.80 GHz for the i7-860 and 2.40 GHz for the Athlon Silver, but boost clocks are nearly identical: 3.47 GHz for Intel, 3.50 GHz for AMD. The i7-860 has a 95W TDP versus the Athlon Silver's 15W TDP.

Process technology differs markedly: the i7-860 uses a 45 nm node from Intel, while the Athlon Silver uses a 6 nm node from TSMC. Transistor count is 774 million for the i7-860; the Athlon Silver's transistor count is not listed. Die size is 296 mm² for Intel and 100 mm² for AMD. L2 cache is 256 KB per core on the i7-860 and 512 KB per core on the Athlon Silver. L3 cache is 8 MB shared on the i7-860 and 2 MB shared on the Athlon Silver.

Memory support: the i7-860 uses DDR3, the Athlon Silver uses LPDDR5. Memory bus is dual-channel on both. Memory bandwidth is listed only for the Athlon Silver at 88.0 GB/s. PCIe: the i7-860 offers Gen 2 with 16 lanes; the Athlon Silver offers Gen 3 with 4 lanes. Integrated graphics: the Athlon Silver has Radeon 610M; the i7-860 has none. Socket: Intel Socket 1156 for the i7-860, AMD Socket FT6 for the Athlon Silver. Production status: the i7-860 is end-of-life, the Athlon Silver is active. Release dates: September 2009 for Intel, September 2022 for AMD. The i7-860's part number is SLBJJ; the Athlon Silver's is 100-000000772.

FAQ

Q: Which CPU is faster in single-core performance?

A: The AMD Athlon Silver 7120U is significantly faster in single-core work. In Cinebench R23 single-core, it scores 886 compared to the i7-860's 363, a 59% advantage for AMD.

Q: Which CPU is better for multi-threaded rendering?

A: The Intel Core i7-860 is better for multi-threaded rendering. It wins Cinebench R23 multi-core with 2574 vs 1673 (a 53.9% lead) and Cinebench R15 multi-core with 259 vs 250 (a 3.6% lead).

Q: How do their power requirements compare?

A: The AMD Athlon Silver 7120U has a 15W TDP, while the Intel Core i7-860 has a 95W TDP. The Athlon Silver draws substantially less power, which is consistent with its mobile market segment and 6 nm process node.

Q: Are these CPUs from the same era?

A: No. The i7-860 was released in September 2009 and is end-of-life, while the Athlon Silver 7120U was released in September 2022 and remains an active product. The i7-860 uses 45 nm Nehalem architecture; the Athlon Silver uses 6 nm Zen 2 architecture.

Q: Do they support the same memory type?

A: No. The i7-860 supports DDR3 memory, while the Athlon Silver 7120U supports LPDDR5 memory. Both use a dual-channel memory bus, but the Athlon Silver's LPDDR5 support gives it a rated bandwidth of 88.0 GB/s.

Q: Which CPU has integrated graphics?

A: Only the AMD Athlon Silver 7120U has integrated graphics, specifically the Radeon 610M. The Intel Core i7-860 has no integrated graphics listed in its specifications.

Where Each One Wins

The Intel Core i7-860 wins in multi-core rendering and parallel workloads. Its two head-to-head victories — Cinebench R15 multi-core by 3.6% and Cinebench R23 multi-core by 53.9% — demonstrate that its four cores and eight threads remain effective in heavily threaded applications. The data shows this chip is better suited for CPU-bound productivity tasks like video encoding, 3D rendering, and batch processing. It also offers more PCIe lanes (16 vs 4) and a larger L3 cache (8 MB vs 2 MB), which may matter in specific workstation scenarios.

The AMD Athlon Silver 7120U wins in single-threaded performance and power efficiency. Its 59% lead in Cinebench R23 single-core (886 vs 363) makes it the better choice for everyday responsiveness, office applications, and any software that relies on a few fast cores. The 15W TDP versus 95W makes it suitable for thin-and-light laptops or low-power builds where thermal headroom is limited. The integrated Radeon 610M graphics provide a display output and basic GPU acceleration without a separate card, which the i7-860 cannot offer. The Athlon Silver also supports faster LPDDR5 memory with 88.0 GB/s bandwidth and PCIe Gen 3 connectivity.

For a desktop user with an existing Socket 1156 motherboard and a heavy multi-threaded workload, the i7-860 is the data-supported pick. For a mobile user or anyone building a low-power system where single-thread performance matters, the Athlon Silver 7120U is the clear winner. The overall scores are within 0.6% of each other, but the workloads that matter to you will determine which chip feels faster.