AMD Ryzen 5 7520U vs AMD Ryzen 7 1700 Comparison

Head-to-Head Benchmarks

The benchmark data shows a clear split between these two processors, with each taking two wins in the recorded tests. The AMD Ryzen 7 1700 dominates in multi-threaded workloads, while the AMD Ryzen 5 7520U counters with strong single-core results.

In Cinebench R15 multi-core, the Ryzen 7 1700 posts 1414 points against the Ryzen 5 7520U's 834 points. That is a 41% deficit for the mobile chip, a massive gap driven by the desktop part's 8 cores and 16 threads versus the 4 cores and 8 threads of the laptop processor. The Geekbench multi-core test tells a similar story: the Ryzen 7 1700 scores 5475, while the Ryzen 5 7520U manages 3766, a 31.2% difference. These are not close results; the Ryzen 7 1700 is decisively ahead in any workload that scales across all cores.

The tables turn entirely in single-threaded tests. In Cinebench R15 single-core, the Ryzen 5 7520U scores 168.8 versus 147 for the Ryzen 7 1700, a 14.8% advantage. Geekbench single-core shows the same pattern: 1185 for the Ryzen 5 7520U against 1023 for the Ryzen 7 1700, a 15.8% lead. The newer Zen 2 architecture in the 7520U, despite its lower TDP and mobile positioning, delivers noticeably better per-core performance than the original Zen design in the 1700.

The aggregate average benchmark score sits nearly even: 2046 for the Ryzen 5 7520U and 2015 for the Ryzen 7 1700. Both processors land at the 45th percentile among all CPUs in the database, meaning they occupy a similar overall performance tier. The wins are split evenly at 2 each, but the nature of those wins matters. The Ryzen 7 1700's multi-core leads are large (41% and 31.2%), while the Ryzen 5 7520U's single-core leads are smaller but consistent (14.8% and 15.8%). This suggests that users should choose based on workload type, not on the overall average.

Where Each One Wins

The Ryzen 7 1700 is the clear choice for heavily threaded applications. Video rendering, 3D modeling, software compilation, and other tasks that use all available cores will show a substantial advantage. The 41% lead in Cinebench R15 multi-core and the 31.2% lead in Geekbench multi-core are decisive margins. If your work involves parallel processing, the Ryzen 7 1700's 8 cores and 16 threads will finish tasks noticeably faster.

The Ryzen 5 7520U wins in single-threaded responsiveness. Everyday tasks like web browsing, office applications, and light productivity often rely on single-core performance. The 14.8% to 15.8% advantages in single-core tests mean snappier interactions and faster load times for many common applications. The 7520U also brings a much lower 15W TDP versus the 65W TDP of the 1700, making it suitable for thin-and-light laptops where battery life and heat are priorities. The 1700 is a desktop part, so it has no integrated graphics; the 7520U includes a Radeon 610M iGPU, which means it can run display outputs without a discrete graphics card.

For mixed workloads, the near-even average scores (2046 vs 2015) indicate that neither processor is a universal winner. The Ryzen 7 1700 pulls ahead when all threads are busy; the Ryzen 5 7520U leads when the load is lighter and single-threaded. Users who alternate between heavy multi-core tasks and light single-threaded work will see less dramatic differences, but the direction of the advantage is clear in each scenario.

Architecture Differences

The architecture gap between these two CPUs is significant, as they come from different design generations and target different market segments. The Ryzen 5 7520U uses the Zen 2 architecture on a 6nm process node from TSMC, with the codename Mendocino. The Ryzen 7 1700 uses the original Zen architecture on a 14nm process node from GlobalFoundries, with the codename Summit Ridge. This is a full generation apart, and the process shrink from 14nm to 6nm contributes heavily to the efficiency differences.

The transistor counts reflect this generation gap. The Ryzen 7 1700 packs 4,800 million transistors on a 213 mm² die. The Ryzen 5 7520U does not have a listed transistor count, but its die size is 100 mm², less than half the area of the 1700. The smaller die with a more modern process allows the 7520U to hit 4.30 GHz boost clock despite its 15W TDP, while the 1700 tops out at 3.70 GHz with a 65W TDP.

Cache configurations differ substantially. The Ryzen 7 1700 has 16 MB of shared L3 cache, four times the 4 MB of the 7520U. This larger cache pool helps the 1700 in multi-threaded workloads where repeated data access across cores benefits from more on-die storage. The 7520U compensates with a faster memory interface: LPDDR5 support with 88.0 GB/s bandwidth versus DDR4 with 42.7 GB/s for the 1700. That double bandwidth advantage helps the smaller cache configuration feed data to the cores more quickly.

The 7520U also has a smaller L1 cache per core at 64 KB versus 96 KB for the 1700, but the L2 cache is identical at 512 KB per core. The 1700 supports ECC memory, while the 7520U does not. The 7520U has a Radeon 610M integrated GPU, while the 1700 has no integrated graphics at all, requiring a discrete GPU for display output.

Specification Differences

The most obvious difference is core count: the Ryzen 7 1700 has 8 cores and 16 threads, while the Ryzen 5 7520U has 4 cores and 8 threads. This doubles the parallel processing capability for the desktop part, but at a cost in power and efficiency.

Clock speeds tell the story of a mobile vs desktop design. The 7520U runs at 2.80 GHz base and boosts to 4.30 GHz; the 1700 runs at 3.00 GHz base and boosts to 3.70 GHz. Despite a lower base clock, the 7520U achieves a much higher boost clock, thanks to the efficient 6nm process. The TDP difference is a major factor: 15W for the 7520U versus 65W for the 1700, a 50W gap that affects cooling requirements and usage scenarios.

The sockets are incompatible: the 7520U uses AMD Socket FT6 (a mobile form factor), while the 1700 uses AMD Socket AM4 (a desktop socket). The memory support differs accordingly: the 7520U uses LPDDR5 with 88.0 GB/s bandwidth, the 1700 uses DDR4 with 42.7 GB/s. The 1700 supports ECC memory, the 7520U does not.

PCIe lanes differ, with the 7520U offering Gen 3 with 4 lanes (CPU only) and the 1700 offering Gen 3 with 16 lanes (CPU only). This affects expansion capability, with the 1700 supporting more add-in cards directly. The 7520U has integrated graphics (Radeon 610M), the 1700 has none. The 1700 has an unlocked multiplier for overclocking; the 7520U is locked. The 1700's launch MSRP was $329, though the database does not list a launch price for the 7520U.

FAQ

Q: Which processor is faster in multi-core tasks?

A: The Ryzen 7 1700 is significantly faster. In Cinebench R15 multi-core, it scores 1414 versus 834 for the Ryzen 5 7520U, a 41% advantage. In Geekbench multi-core, it scores 5475 versus 3766, a 31.2% lead.

Q: Which processor is faster in single-core tasks?

A: The Ryzen 5 7520U is faster. It scores 168.8 versus 147 in Cinebench R15 single-core (14.8% higher) and 1185 versus 1023 in Geekbench single-core (15.8% higher).

Q: How do their overall performance averages compare?

A: The average benchmark scores are nearly tied. The Ryzen 5 7520U averages 2046, and the Ryzen 7 1700 averages 2015. Both sit at the 45th percentile among all CPUs in the database.

Q: Do they use the same memory type?

A: No. The Ryzen 5 7520U supports LPDDR5 with 88.0 GB/s bandwidth, while the Ryzen 7 1700 supports DDR4 with 42.7 GB/s bandwidth. Both use dual-channel memory buses.

Q: Can the Ryzen 7 1700 be overclocked?

A: Yes, it has an unlocked multiplier, so overclocking is possible. The Ryzen 5 7520U has a locked multiplier and cannot be overclocked.

Q: Does the Ryzen 5 7520U have integrated graphics?

A: Yes, it includes a Radeon 610M integrated GPU. The Ryzen 7 1700 has no integrated graphics, so it requires a discrete GPU for display output.

The Verdict

Choose the AMD Ryzen 7 1700 if your workloads are heavily multi-threaded. The 41% lead in Cinebench R15 multi-core and the 31.2% lead in Geekbench multi-core make it the right tool for video encoding, 3D rendering, software builds, and any task that can use 8 cores and 16 threads. It also offers 16 MB of L3 cache (four times the 7520U's 4 MB), ECC memory support, and 16 PCIe lanes for expansion. The unlocked multiplier allows overclocking, though the 65W TDP requires adequate cooling.

Choose the AMD Ryzen 5 7520U if single-core performance and efficiency matter more. The 14.8% to 15.8% single-core advantages mean faster everyday responsiveness. Its 15W TDP is 50W lower than the 1700, making it suitable for laptops, and it includes a Radeon 610M iGPU for display output without a discrete card. The LPDDR5 memory support with 88.0 GB/s bandwidth (more than double the 1700's 42.7 GB/s) helps mitigate the smaller 4 MB L3 cache. Its mobile form factor (Socket FT6) means it belongs in laptops, not desktops.

The data shows a balanced matchup: 2 wins each in the recorded head-to-head tests, with near-identical average scores (2046 vs 2015) and the same 45th percentile ranking. The deciding factor is workload type. The Ryzen 7 1700 is a desktop workhorse for parallel processing; the Ryzen 5 7520U is an efficient mobile processor for single-threaded tasks and everyday use. Neither is a universal recommendation, but each is clearly better than the other in its respective domain.