AMD Ryzen 5 7520C vs Intel Core i5-7640X Comparison

The AMD Ryzen 5 7520C and the Intel Core i5-7640X represent two very different philosophies in processor design, with the former being a modern, efficient mobile part and the latter a desktop-focused enthusiast chip from an older generation. The benchmark data shows a clear, consistent winner across all tested workloads, but the underlying architecture and platform differences tell a more nuanced story about where each processor belongs. This analysis examines the head-to-head results, the architectural implications, and the specific use cases that align with each chip's strengths.

Head-to-Head Benchmarks

The data from the head-to-head benchmark suite is unambiguous: the AMD Ryzen 5 7520C wins every single test, and it does so by a remarkably consistent margin. Across all six Cinebench tests, the AMD part leads by a deltaPct ranging from -17.9% to -18.3% (where the negative sign indicates Intel's deficit relative to AMD). The narrowest gap appears in the Cinebench R20 single-core test, where Intel scores 357 against AMD's 435, a -17.9% difference. The widest margin is in Cinebench R15 single-core, where Intel's 85 is -18.3% behind AMD's 104.

The consistency of these margins is notable. In multi-core workloads, the Intel i5-7640X scores 607 in Cinebench R15, 2533 in R20, and 6031 in R23, while the AMD Ryzen 5 7520C achieves 741, 3089, and 7355 respectively. Each multi-core result shows the AMD chip holding roughly an 18% advantage. The single-core results follow the same pattern: 85 vs 104 in R15, 357 vs 435 in R20, and 851 vs 1038 in R23, all hovering around the same 18% lead.

What makes this particularly interesting is the Intel chip's high clock speeds. The i5-7640X has a base clock of 3.90 GHz and a boost clock of 4.30 GHz, which matches the AMD's boost of 4.30 GHz, yet the AMD still manages to outperform it in single-threaded tests. The Ryzen 5 7520C's base clock is significantly lower at 2.80 GHz, suggesting that its architectural efficiency from the Zen 2 design more than compensates for the lower sustained frequency. The data implies that the newer 6 nm process node and architectural improvements deliver superior instructions-per-clock, a critical factor in both single and multi-threaded performance.

Where Each One Wins

Looking strictly at the benchmark wins, the AMD Ryzen 5 7520C has no competition in this matchup, winning all six head-to-head tests. However, a deeper examination of the benchmark scores and system context reveals distinct domains where each processor may be the more appropriate choice, even if the raw performance numbers favor one side.

For the AMD Ryzen 5 7520C, its wins are not just about raw speed but also about efficiency. With a TDP of 15 watts, it delivers its superior Cinebench scores while consuming a fraction of the power that the Intel chip requires, which is rated at 112 watts. This makes the AMD part the clear winner for any workload where sustained performance is needed without the ability to dissipate significant heat or draw large amounts of power. The presence of integrated Radeon 610M graphics also means it can handle display output without a discrete GPU, a feature entirely absent from the Intel i5-7640X.

The Intel Core i5-7640X, despite losing every benchmark, still occupies a specific niche. Its quad-channel memory support and DDR4 compatibility point to a platform designed for memory bandwidth-heavy tasks, even if the CPU cores themselves are outpaced by the AMD rival. The unlocked multiplier on the Intel chip allows for overclocking, which could potentially close some of the performance gap, though the data provided does not include any overclocked results. The Intel chip also supports PCIe Gen 3, while the AMD's PCIe implementation is limited to 4 lanes from the CPU only, suggesting the Intel platform can support more expansion devices.

The Geekbench scores, where Intel shows 5137 multi-core and 1736 single-core (though no direct AMD comparison is provided in the head-to-head), hint at the Intel's capabilities in different benchmark suites, but these do not change the overall verdict from the Cinebench data. The Intel chip's place in the market is as a desktop processor with a specific socket (Intel Socket 2066) that targets enthusiasts who value platform features over raw core performance.

The Verdict

The data is clear: the AMD Ryzen 5 7520C is the superior processor in terms of measured performance. Its consistent 18% lead across all Cinebench tests, combined with its drastically lower power consumption (15W vs 112W TDP), makes it the logical choice for anyone prioritizing performance per watt. The AMD chip's percentile ranking of 46 vs Intel's 47 is nearly identical, but the AMD part achieves this with a much more efficient design.

However, the verdict is not simply "AMD wins." The Intel Core i5-7640X, with its 2017 release date, is a product from a different era. Its quad-core, quad-thread design is matched by the AMD's quad-core, eight-thread configuration, which explains the multi-core advantage. For a user building a desktop system with an existing Intel Socket 2066 motherboard, the i5-7640X remains a viable, if not leading, option. The unlocked multiplier and quad-channel memory support are features that the AMD mobile chip cannot offer.

For mobile or compact systems, the Ryzen 5 7520C is the only reasonable choice here, given its 15W TDP and integrated graphics. For a desktop enthusiast who requires specific platform features like quad-channel memory and has access to a compatible motherboard, the Intel chip may still serve a purpose. The benchmark data does not make the Intel chip obsolete; it simply shows that in a head-to-head comparison of raw compute performance, the AMD Ryzen 5 7520C is the decisive winner. The choice ultimately depends on the platform and workload priorities, with the performance crown going to AMD.

FAQ

Q: Which processor has a higher single-core Cinebench R23 score?

A: The AMD Ryzen 5 7520C scores 1038 in Cinebench R23 single-core, while the Intel Core i5-7640X scores 851, giving AMD an 18% advantage.

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

A: The AMD Ryzen 5 7520C has a TDP of 15 watts, while the Intel Core i5-7640X has a TDP of 112 watts, representing a significant efficiency gap.

Q: Does the Intel Core i5-7640X have integrated graphics?

A: No, the data shows no integrated graphics for the Intel chip, whereas the AMD Ryzen 5 7520C includes Radeon 610M integrated graphics.

Q: How many threads does each processor support?

A: The Intel Core i5-7640X has 4 threads (from 4 cores), while the AMD Ryzen 5 7520C has 8 threads (from 4 cores with simultaneous multithreading).

Q: What is the memory bandwidth of the AMD Ryzen 5 7520C?

A: The AMD chip has a memory bandwidth of 88.0 GB/s, supporting LPDDR5 memory in a dual-channel configuration. The Intel chip supports quad-channel DDR4 but has no listed bandwidth figure.

Q: Which processor was released more recently?

A: The AMD Ryzen 5 7520C was released on May 22, 2023, while the Intel Core i5-7640X was released on June 25, 2017.

Architecture Differences

The architectural differences between the Intel Core i5-7640X and AMD Ryzen 5 7520C are substantial and explain much of the performance gap. The Intel chip is built on Kaby Lake architecture (specifically Kaby Lake-X) using a 14 nm process node fabricated by Intel. It features 4 cores with 4 threads, a design that lacks simultaneous multithreading. The cache hierarchy includes 64 KB of L1 per core, 256 KB of L2 per core, and a 6 MB shared L3 cache. This is a desktop-class design with a 112W TDP, supporting DDR4 memory via a quad-channel bus and PCIe Gen 3.

In contrast, the AMD Ryzen 5 7520C is based on the newer Zen 2 architecture, codenamed Mendocino, manufactured on a 6 nm process node by TSMC. It has 4 cores but 8 threads, enabling better multi-threaded throughput. The cache layout differs significantly: 64 KB L1 per core (same as Intel), 512 KB L2 per core (double the Intel's), and a smaller 4 MB shared L3 cache. This is a mobile-oriented design with a 15W TDP, supporting LPDDR5 memory in a dual-channel configuration with a listed bandwidth of 88.0 GB/s. The AMD chip also includes integrated Radeon 610M graphics and has a die size of 100 mm², a detail not available for the Intel part.

The process node advantage (6 nm vs 14 nm) is a major factor in the AMD's efficiency and performance. The smaller transistors allow for higher density and lower power consumption, which is reflected in the TDP figures. The AMD's use of simultaneous multithreading doubles the thread count, providing an additional edge in multi-threaded workloads. The Intel chip's larger L3 cache (6 MB vs 4 MB) does not appear to compensate for its architectural deficiencies in this comparison. Furthermore, the Intel chip's socket is Intel Socket 2066, a high-end desktop platform, while the AMD uses AMD Socket FT6, a mobile platform, reflecting their intended market segments.

Specification Differences

The specification differences between the two processors are stark and directly align with their design goals. The Intel Core i5-7640X has a base clock of 3.90 GHz and a boost clock of 4.30 GHz, while the AMD Ryzen 5 7520C has a base clock of 2.80 GHz and an identical boost clock of 4.30 GHz. This means the AMD chip achieves the same maximum clock speed despite a much lower base frequency, highlighting its efficiency.

The core and thread counts differ, with the Intel offering 4 cores and 4 threads versus the AMD's 4 cores and 8 threads. The TDP is perhaps the most significant difference: 112 watts for Intel versus 15 watts for AMD, a 7.5x difference. The socket types are incompatible, with Intel using Socket 2066 and AMD using Socket FT6. Memory support differs, with Intel using DDR4 in a quad-channel configuration and AMD using LPDDR5 in a dual-channel setup, with AMD listing a specific bandwidth of 88.0 GB/s.

The process node and foundry differ: Intel uses 14 nm from its own foundry, while AMD uses 6 nm from TSMC. The cache sizes vary, with Intel having 256 KB L2 per core and 6 MB shared L3, while AMD has 512 KB L2 per core and 4 MB shared L3. The Intel chip has an unlocked multiplier, allowing overclocking, while the AMD chip is locked. The AMD includes integrated Radeon 610M graphics, while the Intel has none. The Intel chip has no listed production status, while the AMD is marked as "Active." Finally, the release dates are far apart, with Intel on June 25, 2017, and AMD on May 22, 2023, and only the AMD chip has a listed part number (100-000000773).