Intel Core i3-5020U

The Intel Core i3-5020U is a 2-core, 4-thread mobile processor built on the 14 nm Broadwell-U architecture, with a base clock of 2.20 GHz and a 15 W TDP. It carries a launch MSRP of $281. Benchmark results place it at the 20th percentile among all CPUs, with an average benchmark score of 760. Its nearest rivals are all within a fraction of a percent, making it a tightly contested entry-level mobile chip.

Benchmark Performance

The data shows a Cinebench R23 multicore score of 1885 and a single-core score of 266. In Geekbench, the multicore score is 1379 and the single-core score is 696. Cinebench R20 delivers 791 multicore and 111 single-core, while Cinebench R15 multicore comes in at 189. These figures put the i3-5020U at the 20th percentile of all CPUs, meaning it outperforms only about one in five processors in the database. The average benchmark score of 760 is essentially a dead heat with its nearest rivals. Against the Intel Pentium Silver N5000, the i3-5020U trails by 0.1% (761 vs 760). It edges ahead of the Intel Core i5-4250U by 0.1% (759 vs 760) and the Intel Core i5-3610ME by 0.2% (759 vs 760). However, it falls 0.2% behind the Intel Core i5-4200U (762 vs 760). These deltas are within measurement noise, so the i3-5020U's aggregate performance is effectively identical to all four rivals. The absolute scores, however, are low: a Cinebench R23 multicore score of 1885 is modest for any modern workload, and the single-core score of 266 indicates limited per-thread throughput. The cache hierarchy is also modest, with 64 KB of L1 per core, 256 KB of L2 per core, and 3 MB of shared L3, which limits the amount of data that can be kept close to the cores. The Cinebench R15 multicore score of 189 is particularly low, reflecting the chip's age and limited core count.

Single-Thread vs Multi-Thread Behavior

The split between single-thread and multi-thread scores reveals a processor that leans on its four threads. In Cinebench R23, the multicore score of 1885 is substantially higher than the single-core score of 266, demonstrating that the 2-core/4-thread configuration extracts meaningful parallelism. Geekbench shows a similar pattern: 1379 multicore versus 696 single-core. The single-core scores themselves are low across all tests — 111 in Cinebench R20 and 266 in Cinebench R23 — indicating that lightly threaded tasks will not see impressive responsiveness. Conversely, the multicore scores, while still low in absolute terms, show that workloads which can utilize all four threads will get more out of this chip. For real-world usage, this means a web browser with multiple tabs or a document editor with background tasks will perform better than a single-threaded application. The data suggests the i3-5020U is better suited to parallelizable office tasks than to latency-sensitive single-threaded applications. The lack of a boost clock means the processor runs at a constant 2.20 GHz, so there is no headroom for single-threaded bursts beyond the base frequency. The Geekbench single-core score of 696 is low, which will be felt in any application that depends heavily on a single thread for its primary loop.

Who Should Consider It

Based on the benchmark results, the i3-5020U is positioned for basic mobile productivity. Its 20th percentile standing and low absolute scores indicate it is not suitable for demanding creation workloads such as video editing or 3D rendering, where multicore scores like 1885 in Cinebench R23 would result in long render times. Gaming is also out of scope, given the low single-core performance (266 in Cinebench R23) and the integrated Intel HD 5500 graphics. The ideal use case is everyday office work: word processing, spreadsheets, email, and web browsing. The 15 W TDP and mobile segment make it appropriate for thin-and-light laptops where battery life takes priority over performance. Users who need to run multiple productivity applications simultaneously will benefit from the 4 threads, but those expecting snappy single-threaded response in heavy applications should look elsewhere. The 3 MB shared L3 cache is sufficient for light workloads but may cause frequent memory accesses in larger datasets. The 20th percentile performance means it will struggle with any heavy multitasking, so it is best suited to users with modest computing demands.

Platform and Compatibility

The i3-5020U uses the Intel BGA 1168 socket, which is a soldered, non-upgradeable design. It supports DDR3 memory in a dual-channel configuration, with a memory bandwidth of 25.6 GB/s. ECC memory is not supported. For expansion, it provides PCIe Gen 2 with 12 lanes from the CPU. The integrated graphics is Intel HD 5500. The processor is part of the Broadwell-U family, built on a 14 nm process with 1,300 million transistors and a die size of 82 mm². It was released on 2015-02-28 and is now end-of-life. The multiplier is locked, so overclocking is not possible. The part number is SR240. The platform is limited to DDR3, which means it cannot take advantage of newer DDR4 or DDR5 memory standards. The BGA socket also means there is no upgrade path; the processor is permanently attached to the motherboard. The 12 PCIe Gen 2 lanes are adequate for basic peripherals and storage, but they are insufficient for high-bandwidth add-in cards. The lack of ECC support further restricts it to consumer-grade memory configurations.

How It Compares

Intel Pentium Silver N5000: The i3-5020U trails the N5000 by 0.1% in average benchmark score (760 vs 761). This is a negligible difference, meaning the two are effectively equal in aggregate performance, though the i3-5020U's 15 W TDP is lower than what the N5000 typically demands.

Intel Core i5-4250U: The i3-5020U leads the i5-4250U by 0.1% (760 vs 759). Both are mobile processors from Intel, but the i3-5020U's newer Broadwell architecture gives it a marginal edge in the benchmark aggregate, despite having fewer cores.

Intel Core i5-3610ME: The i3-5020U is 0.2% ahead of the i5-3610ME (760 vs 759). This is another near-tie, showing that the i3-5020U performs on par with this older i5-class part, which is a testament to the efficiency of the 14 nm process.

Intel Core i5-4200U: The i3-5020U falls 0.2% behind the i5-4200U (760 vs 762). The i5-4200U holds a slight advantage in aggregate performance, but the difference is well within the margin of error for these benchmarks.

FAQ

Q: What is the TDP of the Intel Core i3-5020U?

A: The TDP is 15 W.

Q: Does the i3-5020U support ECC memory?

A: No, ECC memory is not supported.

Q: What socket does the i3-5020U use?

A: It uses the Intel BGA 1168 socket.

Q: What is the integrated graphics unit?

A: The integrated graphics is Intel HD 5500.

Q: Is the multiplier unlocked?

A: No, the multiplier is locked, so overclocking is not possible.

Q: What is the memory bandwidth?

A: The memory bandwidth is 25.6 GB/s, using dual-channel DDR3.

Power and Thermals

The i3-5020U has a TDP of 15 W, placing it in the low-power mobile segment. This 15 W envelope, combined with the 14 nm process node and the Broadwell-U architecture, indicates that the processor generates modest heat. The data shows that a simple cooling solution, such as a basic heatpipe or a small fan, is sufficient to keep it within operating limits. The end-of-life status and mobile market segment suggest that it was designed for ultraportable laptops where thermal management is critical. The lack of a boost clock means the processor runs at a constant 2.20 GHz, which simplifies thermal behavior — there are no turbo spikes to manage. Overall, the 15 W TDP class makes it easy to cool in a thin chassis, and the locked multiplier prevents any user-induced thermal excursions. The 82 mm² die size and 1,300 million transistor count further underscore its efficiency-oriented design, keeping power density low and allowing for passive or low-speed fan solutions in compact enclosures.