Intel Core i5-10210U vs Intel Core i7-10510U Comparison

Both the Intel Core i7-10510U and the Intel Core i5-10210U are 4-core, 8-thread Comet Lake-U mobile processors aimed at thin-and-light laptops. They share the same 25W TDP, the same BGA 1440 socket, and the same integrated UHD Graphics. The data shows a clear separation, however, with the i7 winning 16 of 19 head-to-head benchmarks, while the i5 takes a decisive lead in Geekbench tests. This makes the choice between them more nuanced than a simple "faster vs. slower" verdict.

Where Each One Wins

The Intel Core i7-10510U is the dominant performer in the vast majority of workloads. Its wins are spread across rendering, physics simulation, and general productivity. It takes the lead in all three Cinebench versions (R15, R20, R23) for both multi-core and single-core tests. In PassMark, it secures victories in integer math, floating-point math, data compression, data encryption, prime number finding, random string sorting, multithreaded tasks, and physics. The i7 also wins the PassMark single-thread test.

The Intel Core i5-10210U’s wins are concentrated in a single benchmark family: Geekbench. It beats the i7 by 13.3% in Geekbench multi-core (3054 vs 2648) and by 14.9% in single-core (1213 vs 1032). It also edges out the i7 in PassMark extended instructions, though only by a marginal 0.9% (5269 vs 5224).

What does this mean in practice? If your workload involves running Geekbench as a primary metric, the i5-10210U is the better part. For almost everything else—from video encoding to spreadsheet crunching to general application responsiveness—the i7-10510U is the safer bet.

Architecture Differences

Both processors are built on Intel’s 14nm process and share the Comet Lake architecture and Comet Lake-U codename. The core configuration is identical: 4 cores and 8 threads. They also share the same L1 cache (64 KB per core) and L2 cache (256 KB per core). The key architectural difference lies in the L3 cache. The i7-10510U has 8 MB of shared L3 cache, while the i5-10210U has 6 MB. This larger cache pool is a likely contributor to the i7’s consistent lead in memory-sensitive tasks like data compression and integer math.

Clock speeds also differ. The i7-10510U has a base clock of 1800 MHz and a boost clock of 4.90 GHz. The i5-10210U runs lower, with a base clock of 1600 MHz and a boost clock of 4.20 GHz. This 0.70 GHz boost advantage for the i7 is substantial for bursty, single-threaded workloads. Both chips support DDR3 and DDR4 memory, neither supports ECC, and both are end-of-life products released on the same date. Neither has an unlocked multiplier.

Head-to-Head Benchmarks

The benchmark data reveals a pattern of small but consistent wins for the i7, punctuated by a few larger gaps.

In multi-core Cinebench tests, the i7-10510U leads by roughly 5%. It scores 542 vs 516 in Cinebench R15 multi-core (a 5% lead), 2262 vs 2151 in R20 multi-core (5.2%), and 5388 vs 5122 in R23 multi-core (5.2%). The single-core Cinebench results tell a similar story: 76 vs 72 in R15 (5.6%), 319 vs 303 in R20 (5.3%), and 760 vs 723 in R23 (5.1%). These are not massive margins, but they are consistent.

The largest single win for the i7 comes in PassMark physics, where it scores 472 against the i5’s 410—a 15.1% advantage. This is a significant gap for a workload that relies on both core scheduling and cache behavior. Another notable win is in PassMark find prime numbers, where the i7 scores 22 vs 18, a 22.2% delta. While the absolute scores here are small, the relative difference is the largest in the entire comparison.

The PassMark multi-thread test shows the i7 ahead by 5.7% (6450 vs 6104), and the single-thread test shows a 5% lead (2237 vs 2131). Data compression goes to the i7 by 3.1% (82606 vs 80157), as do floating-point math (14080 vs 13657) and integer math (23441 vs 22732), both by 3.1%. Data encryption is another i7 win, 2151 vs 2051 (4.9%).

The i5-10210U’s counterattack in Geekbench is dramatic. It wins Geekbench multi-core by 13.3% (3054 vs 2648) and single-core by 14.9% (1213 vs 1032). These are the only benchmarks where the i5 leads by double digits. Its other win, PassMark extended instructions (5269 vs 5224), is a narrow 0.9% margin that is within typical run-to-run variance.

FAQ

Q: Which CPU is faster in Cinebench R23 multi-core?

A: The Intel Core i7-10510U scores 5388 versus the i5-10210U’s 5122, a 5.2% advantage.

Q: Does the i5-10210U ever beat the i7-10510U?

A: Yes, in Geekbench tests. The i5 wins multi-core by 13.3% (3054 vs 2648) and single-core by 14.9% (1213 vs 1032). It also edges out the i7 in PassMark extended instructions by 0.9%.

Q: What is the biggest performance gap between the two?

A: The largest relative gap is in PassMark find prime numbers, where the i7-10510U scores 22 versus the i5’s 18, a 22.2% difference.

Q: Do both CPUs have the same L3 cache size?

A: No. The i7-10510U has 8 MB of shared L3 cache, while the i5-10210U has 6 MB.

Q: Are their clock speeds identical?

A: No. The i7-10510U has a base clock of 1800 MHz and a boost clock of 4.90 GHz. The i5-10210U has a base clock of 1600 MHz and a boost clock of 4.20 GHz.

Q: Which CPU has a better overall benchmark average?

A: The i7-10510U has an average benchmark score of 8580, placing it in the 65th percentile of all CPUs. The i5-10210U has an average score of 8344, placing it in the 64th percentile.

Specification Differences

The table below highlights only the fields where the two processors differ.

| Specification | Intel Core i7-10510U | Intel Core i5-10210U |

| :--- | :--- | :--- |

| Base Clock | 1800 MHz | 1600 MHz |

| Boost Clock | 4.90 GHz | 4.20 GHz |

| L3 Cache | 8 MB (shared) | 6 MB (shared) |

| Generation | Core i7 (Comet Lake-U) | Core i5 (Comet Lake-U) |

| Avg Benchmark Score | 8580 | 8344 |

| Percentile vs All CPUs | 65th | 64th |

All other key specifications—cores (4), threads (8), TDP (25W), socket (BGA 1440), process node (14nm), integrated graphics (UHD Graphics), memory support (DDR3, DDR4), and release date—are identical.

The Verdict

The data is unambiguous: the Intel Core i7-10510U is the superior processor for nearly all compute tasks. It wins 16 of 19 benchmarks, with a consistent 3-5% lead in most multi-threaded and single-threaded tests, and a larger 15.1% margin in physics. The extra 2 MB of L3 cache and the 0.70 GHz higher boost clock give it a real, measurable edge in productivity and content creation workloads. For a builder optimizing for all-around performance, the i7-10510U is the clear pick.

The Intel Core i5-10210U is only the right choice if your application stack is heavily weighted toward Geekbench-style workloads, where it leads by 13-15%. Outside of that specific scenario, its lower clock speeds and smaller cache put it at a consistent disadvantage. The i5 does match the i7 in core count, thread count, and TDP, so it will fit in the same thermal envelope, but it will deliver less performance in exchange.

In short, choose the i7-10510U for better rendering, physics, encryption, and general math performance. Choose the i5-10210U only if you have a specific need for Geekbench scores, as its wins there are not reflected in any other benchmark in this comparison. The i7’s broader win profile makes it the more versatile and dependable choice for a mobile system.