Intel Core i3-7100 vs Intel Core i7-3537U Comparison

Head-to-Head Benchmarks

The recorded data shows a clear and consistent pattern: the Intel Core i3-7100 wins every single benchmark in the comparison, taking all 7 head-to-head tests. The i7-3537U does not secure a single win. This is not a close contest, and the margins are substantial enough to define the relationship between these two processors.

Starting with multi-core workloads, the i3-7100 posts a Cinebench R15 multicore score of 232 against 201 for the i7-3537U, a 15.4% advantage. The gap widens slightly in Cinebench R20 multicore, where the i3-7100 scores 970 versus 839, a 15.6% lead. Cinebench R23 multicore tells the same story: 2310 for the i3-7100 against 1998 for the i7-3537U, again a 15.6% difference. In Geekbench multicore, the i3-7100 reaches 1501 while the i7-3537U manages 1269, its largest multi-core margin at 18.3%.

Single-core results follow the same trend, though the smallest gap appears here. In Geekbench single-core, the i3-7100 scores 722 and the i7-3537U scores 658, a 9.7% edge. Cinebench R20 single-core shows the i3-7100 at 136 versus 118, a 15.3% lead. Cinebench R23 single-core gives the i3-7100 326 points against 282, a 15.6% advantage. Notably, the i3-7100 also holds a single-core win in Cinebench R15 with 52 points, though the i7-3537U has no recorded R15 single-core score in the database for direct comparison.

The average benchmark score reinforces the overall picture. The i3-7100 averages 781 points across its benchmark suite, while the i7-3537U averages 766. Both processors sit at the 21st percentile among all CPUs, meaning they occupy similar positions in the broader performance landscape, but the i3-7100 consistently lands ahead when measured directly against the i7-3537U.

The nearest rivals for each chip help contextualize their standing. The i3-7100 sits within 0.4% of the AMD A10-5800K and the Intel Pentium G4520, and within 0.6% of the AMD Athlon X4 760K. The i7-3537U is 0.3% ahead of the AMD A8-6600K and 0.7% ahead of the Intel Core i3-3240, while trailing the Intel Core i5-680 by 0.8% and the Intel Core i7-3687U by 0.9%. These close margins place both chips in a similar performance tier, but the direct head-to-head data leaves no ambiguity about which one is faster.

Architecture Differences

The two processors come from different Intel generations and manufacturing processes. The i3-7100 is built on Kaby Lake architecture using a 14 nm process node, while the i7-3537U uses Ivy Bridge architecture on a 22 nm node. The newer process gives the i3-7100 a manufacturing advantage that shows up in its performance results.

Both chips feature 2 physical cores and 4 threads, so the threading structure is identical. The cache layouts differ slightly. The i3-7100 has 64 KB of L1 cache per core and 256 KB of L2 cache per core, with 3 MB of shared L3 cache. The i7-3537U matches the L1 and L2 configuration per core but offers a larger 4 MB shared L3 cache. Despite having more L3 cache, the i7-3537U still falls behind in every benchmark, indicating that the i3-7100's architectural and clock advantages outweigh the extra cache.

Clock speeds are a major differentiator. The i3-7100 runs at a base clock of 3.90 GHz with no boost clock listed, so it operates at a fixed high frequency. The i7-3537U has a base clock of 2000.00 MHz (2.00 GHz) and a boost clock of 3.20 GHz. Even at its maximum boost, the i7-3537U cannot match the i3-7100's sustained base clock, which helps explain the consistent performance gap.

Power consumption and platform targets differ sharply. The i3-7100 has a TDP of 51 watts and targets the desktop segment with an Intel Socket 1151. The i7-3537U has a TDP of just 17 watts and is a mobile part on Intel BGA 1023. The database also records a die size of 118 mm² for the i7-3537U while no die size is listed for the i3-7100. These figures reflect very different design goals: the i3-7100 prioritizes raw throughput for a desktop system, while the i7-3537U prioritizes low power for a laptop.

Memory support also diverges. The i3-7100 supports DDR4 memory with dual-channel configuration and a recorded memory bandwidth of 38.4 GB/s. The i7-3537U supports DDR3 with dual-channel configuration, and no memory bandwidth figure is recorded for it. The i3-7100 also lists PCIe Gen 3 with 16 lanes from the CPU, while no PCIe information is available for the i7-3537U. Neither chip supports ECC memory.

Integrated graphics differ as well. The i3-7100 includes Intel HD 630 graphics, while the i7-3537U includes Intel HD 4000. The i3-7100 was released in early 2017, while the i7-3537U came out in early 2013, a difference of about four years that aligns with the architectural and process improvements.

FAQ

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

A: The Intel Core i3-7100 wins every multi-core benchmark in the database. It leads by 15.4% in Cinebench R15, 15.6% in Cinebench R20, 15.6% in Cinebench R23, and 18.3% in Geekbench multicore.

Q: Is the i7-3537U competitive in single-core performance?

A: No. The i3-7100 wins all single-core tests where both have recorded scores, with leads of 9.7% in Geekbench, 15.3% in Cinebench R20, and 15.6% in Cinebench R23.

Q: Why does the i7-3537U have more L3 cache but still lose?

A: The i7-3537U has 4 MB of shared L3 cache versus 3 MB on the i3-7100. However, the i3-7100 runs at a 3.90 GHz base clock versus a 2.00 GHz base and 3.20 GHz boost on the i7-3537U, and it uses a newer 14 nm Kaby Lake architecture versus 22 nm Ivy Bridge, so its performance advantage comes from clock speed and architecture rather than cache size.

Q: What is the power consumption difference?

A: The i3-7100 has a TDP of 51 watts, while the i7-3537U has a TDP of 17 watts. The i7-3537U is designed for mobile systems and draws significantly less power, while the i3-7100 is a desktop part.

Q: Do these chips support the same memory type?

A: No. The i3-7100 supports DDR4 memory with dual-channel configuration and 38.4 GB/s bandwidth. The i7-3537U supports DDR3 memory with dual-channel configuration and no recorded bandwidth figure.

Q: How do these chips compare to their nearest rivals?

A: The i3-7100 is within 0.4% of the AMD A10-5800K and Intel Pentium G4520, and within 0.6% of the AMD Athlon X4 760K. The i7-3537U is within 0.3% of the AMD A8-6600K and 0.7% of the Intel Core i3-3240, while trailing the Intel Core i5-680 by 0.8% and the Intel Core i7-3687U by 0.9%.

The Verdict

The data supports a straightforward conclusion: the Intel Core i3-7100 is the faster processor in every measured workload. It wins all 7 head-to-head benchmarks, with margins ranging from 9.7% to 18.3%. Its higher base clock, newer 14 nm Kaby Lake architecture, and DDR4 support give it a clear performance edge over the older 22 nm Ivy Bridge mobile chip.

The i7-3537U is not without merit, but its strengths lie outside raw performance. Its 17 watt TDP makes it far more power-efficient than the 51 watt i3-7100, and it is built for mobile platforms with an Intel BGA 1023 socket. The i3-7100, by contrast, is a desktop part on Intel Socket 1151 with no boost clock because it does not need one; its 3.90 GHz base clock is already higher than the i7-3537U's 3.20 GHz boost ceiling.

For a desktop builder who needs the best benchmark results, the i3-7100 is the obvious pick. The i7-3537U only makes sense in a mobile context where its low power draw and integrated graphics are the priority, and where the i3-7100 cannot be installed at all due to the different socket. Both chips sit at the 21st percentile among all CPUs, so neither is a high-end part, but within this pairing the i3-7100 is consistently ahead.

Specification Differences

The two processors differ in nearly every major specification category. The i3-7100 has a base clock of 3.90 GHz with no boost clock, while the i7-3537U has a base clock of 2000.00 MHz and a boost clock of 3.20 GHz. The i3-7100 has a TDP of 51 watts, the i7-3537U has a TDP of 17 watts.

The i3-7100 uses an Intel Socket 1151, the i7-3537U uses Intel BGA 1023. The i3-7100 is built on Kaby Lake architecture with a 14 nm process, the i7-3537U uses Ivy Bridge on a 22 nm process. The i3-7100 has 3 MB of shared L3 cache, the i7-3537U has 4 MB of shared L3 cache. The i3-7100 supports DDR4 memory with 38.4 GB/s bandwidth, the i7-3537U supports DDR3 memory with no recorded bandwidth. The i3-7100 lists PCIe Gen 3 with 16 lanes from the CPU, the i7-3537U has no PCIe data recorded. The i3-7100 includes Intel HD 630 graphics, the i7-3537U includes Intel HD 4000. The i3-7100 targets the desktop market, the i7-3537U targets mobile. The i7-3537U has a recorded die size of 118 mm², while no die size is listed for the i3-7100.

The two chips share several traits: both have 2 cores, 4 threads, 64 KB L1 cache per core, 256 KB L2 cache per core, dual-channel memory buses, no ECC support, and locked multipliers. Both processors were made by Intel, and neither has a recorded launch MSRP in the database.

Where Each One Wins

The Intel Core i3-7100 wins in every performance category measured. It takes multi-core tests by margins of 15.4% to 18.3%, and single-core tests by 9.7% to 15.6%. Any workload that relies on CPU throughput, whether single-threaded or multi-threaded, favors the i3-7100. Its 3.90 GHz base clock and 14 nm Kaby Lake architecture deliver higher scores across Cinebench R15, R20, R23, and Geekbench. For desktop users who want the maximum performance from this pairing, the i3-7100 is the only choice.

The Intel Core i7-3537U wins on power efficiency and platform suitability. Its 17 watt TDP is dramatically lower than the i3-7100's 51 watts, making it appropriate for thin-and-light laptops where heat and battery life matter more than raw speed. Its mobile socket, Intel BGA 1023, fits systems that cannot accommodate a desktop part. The i7-3537U also carries a larger 4 MB L3 cache, though that does not translate into benchmark wins. Its strength is not performance; it is the ability to run in a low-power mobile chassis with Intel HD 4000 graphics.

The use case split is clean. Pick the i3-7100 for a desktop build where benchmark scores and sustained clock speed are the priorities. Pick the i7-3537U only if the requirement is a low-power mobile processor that fits a BGA 1023 laptop motherboard and does not need to win performance comparisons. The benchmark data gives the i3-7100 all 7 wins, and the specification sheet confirms that the two chips serve different markets with different design goals.