Intel Core i3-7100 vs Intel Pentium Silver J5040 Comparison

Head-to-Head Benchmarks

The recorded data shows a clean sweep in the direct comparison between the Intel Pentium Silver J5040 and the Intel Core i3-7100. Across six Cinebench tests, the Pentium Silver J5040 wins every single matchup. This is a significant outcome, given that the Core i3-7100 carries a much higher base clock and a desktop-class 51W thermal design. The benchmark results indicate that the J5040's four physical cores and higher boost clock (3.20 GHz versus the i3-7100's 3.90 GHz fixed frequency) translate into a consistent advantage in rendering workloads.

The largest margin appears in the Cinebench R15 single-core test. The Pentium Silver J5040 scores 91 points against the Core i3-7100's 52 points, a delta of 75%. That is a stunning gap for a single-threaded workload. It suggests the J5040's Goldmont Plus architecture, despite its mobile pedigree, executes this particular workload far more efficiently than the older Kaby Lake design in the i3-7100. The same test in multicore shows a 19% advantage for the J5040, with 276 points versus 232 points.

Moving to Cinebench R20, the pattern holds. The J5040 posts 1150 points in multicore, beating the i3-7100's 970 points by 18.6%. In single-core, the J5040 wins with 162 points versus 136 points, a 19.1% delta. These margins are remarkably consistent, hovering near the 18-19% mark for every test except the outlier R15 single-core result.

Cinebench R23 repeats the same story. The J5040 scores 2739 points in multicore, 18.6% higher than the i3-7100's 2310 points. Single-core sees the J5040 at 386 points versus 326 points, a 18.4% edge. The consistency across R15, R20, and R23 suggests that the performance difference is structural rather than workload-specific. The J5040 simply executes these rendering tasks faster, regardless of the Cinebench version.

The average benchmark score tells a slightly different story. The J5040's average is 801 points, while the i3-7100's average is 781 points. That is a modest 2.6% difference in the aggregate, far smaller than the head-to-head deltas would imply. This discrepancy arises because the i3-7100 has two additional Geekbench results in its benchmark set, which we will examine shortly.

One of the most notable aspects of the head-to-head data is the absence of any test where the i3-7100 wins. The wins tally is 6 for the J5040 and 0 for the i3-7100. This is a decisive result in the database's recorded measurements. However, the i3-7100 does show its strength in the Geekbench tests, which are not part of the head-to-head set but are present in its individual benchmark list. The i3-7100 scores 1501 in Geekbench multicore and 722 in Geekbench single-core. These numbers are not compared directly against the J5040 in the head-to-head table, but they do contribute to the i3-7100's average.

The percentile placement for both CPUs is identical at the 21st percentile among all CPUs in the database. This means that, despite the J5040's clean sweep in direct comparisons, both processors occupy a similar tier in the overall performance distribution. The J5040's nearest rivals include the AMD A10-7700K and Intel Xeon E5530, both with an average score of 801 and a delta of 0%. The Intel Core i5-3320M sits 0.2% behind, and the AMD Ryzen 3 2200U trails by 0.5%. The i3-7100's nearest rivals are slightly lower: the AMD A10-5800K and Intel Pentium G4520 at 778 points (0.4% ahead of the i3-7100), the AMD Athlon X4 760K at 777 points (0.6% ahead), and the Intel Pentium Silver J5005 at 776 points (0.7% ahead). Interestingly, the J5005, which shares the Gemini Lake family with the J5040, sits near the i3-7100 in the aggregate rankings.

Where Each One Wins

The use-case split based on benchmark wins is straightforward: the Pentium Silver J5040 wins every Cinebench test in the head-to-head comparison. This includes all three generations of Cinebench (R15, R20, R23) in both single-core and multicore modes. That means for rendering workloads, 3D modeling previews, and any task that relies on Cinebench-style ray tracing, the J5040 is the faster processor. The margins range from 18.4% to 75%, with the most extreme advantage in the R15 single-core test. The J5040 also holds a higher boost clock at 3.20 GHz, though the i3-7100 has a higher sustained base clock at 3.90 GHz. The J5040's four cores versus the i3-7100's two cores gives it a structural advantage in multicore scenarios, as evidenced by the consistent 18-19% multicore deltas.

The Core i3-7100, on the other hand, does not win a single head-to-head benchmark. However, its individual benchmark list includes Geekbench results that are not present for the J5040. The i3-7100 scores 1501 in Geekbench multicore and 722 in Geekbench single-core. These are not part of the head-to-head set, so they cannot be directly compared, but they do indicate that the i3-7100 has strength in integer-heavy, memory-latency-sensitive workloads that Cinebench may not fully capture. The i3-7100 also has a higher base clock (3.90 GHz) and no boost clock, meaning it runs at a constant frequency. This could be advantageous for sustained workloads that do not benefit from bursty boost behavior.

The i3-7100 also carries more PCIe lanes: Gen 3 with 16 lanes, versus the J5040's Gen 2 with 6 lanes. This matters for discrete GPU and NVMe storage configurations, where bandwidth and lane count directly impact performance. The i3-7100's larger L3 cache (3 MB shared) and larger L2 cache (256 KB per core) also gives it more on-chip storage for frequently accessed data, which could benefit workloads with moderate data reuse. The J5040 has 4 MB of L2 (shared across all cores) and 56 KB of L1 per core, which is smaller than the i3-7100's 64 KB per core L1.

For gamers building a small form factor system, the J5040's 10W TDP is a massive advantage. The i3-7100 draws 51W, more than five times the thermal budget of the J5040. This makes the J5040 suitable for passive cooling solutions, thin laptops, and fanless mini PCs. The i3-7100, with its 51W TDP, requires a capable air cooler at least, and likely a more substantial heatsink given its desktop socket. The J5040's socket is Intel BGA 1090, a soldered mobile socket, while the i3-7100 uses Intel Socket 1151, a PGA socket typical of desktop builds.

The i3-7100's integrated graphics is Intel HD 630, while the J5040 uses UHD Graphics 605. The J5040's graphics output is part of the Gemini Lake platform, which is known for its media playback capabilities and hardware video decode engines. The i3-7100, being a Kaby Lake part, also has strong media capabilities, including support for hardware encoding and decoding of common codecs. Neither supports ECC memory, and both use dual-channel DDR4 with a memory bandwidth of 38.4 GB/s.

FAQ

Q: Which CPU wins the most head-to-head benchmarks?

A: The Intel Pentium Silver J5040 wins all 6 head-to-head benchmarks against the Intel Core i3-7100. The i3-7100 records 0 wins in the comparison.

Q: What is the largest performance gap between the two CPUs?

A: The largest delta is in the Cinebench R15 single-core test, where the J5040 scores 91 points versus the i3-7100's 52 points, a 75% advantage for the J5040.

Q: Are the two CPUs in the same overall performance tier?

A: Yes, both are at the 21st percentile among all CPUs in the database. The J5040 has an average benchmark score of 801, while the i3-7100 averages 781.

Q: Does the Core i3-7100 have any benchmark results that are not compared head-to-head?

A: Yes, the i3-7100 has Geekbench results in its individual benchmark list: 1501 in multicore and 722 in single-core. The J5040 does not have Geekbench results in the database.

Q: Which CPU has more physical cores?

A: The J5040 has 4 cores and 4 threads. The i3-7100 has 2 cores and 4 threads, relying on Hyper-Threading to reach the same thread count.

Q: How do the boost clocks compare?

A: The J5040 has a base clock of 2000 MHz and a boost clock of 3.20 GHz. The i3-7100 has a base clock of 3.90 GHz and no boost clock, meaning it runs at a fixed frequency.

Specification Differences

The two processors differ in almost every core specification. The J5040 has 4 cores and 4 threads, while the i3-7100 has 2 cores and 4 threads. The J5040's base clock is 2000 MHz with a boost clock of 3.20 GHz. The i3-7100's base clock is 3.90 GHz with no boost clock. The TDP difference is substantial: the J5040 is rated at 10W, the i3-7100 at 51W. The sockets are different as well: the J5040 uses Intel BGA 1090 (soldered), the i3-7100 uses Intel Socket 1151 (desktop PGA).

The cache layouts diverge significantly. The J5040 has 56 KB of L1 per core and 4 MB of L2 shared across all cores, with no L3 cache. The i3-7100 has 64 KB of L1 per core, 256 KB of L2 per core, and 3 MB of shared L3 cache. The i3-7100's larger per-core L2 and L3 cache likely benefits workloads with high cache locality, though the head-to-head data does not capture such a scenario.

The integrated graphics differ: the J5040 has UHD Graphics 605, the i3-7100 has Intel HD 630. The market segments also differ: the J5040 is classified as Mobile, the i3-7100 as Desktop. The production status is different too: the J5040 is End-of-life, the i3-7100 is Active. The release dates are not identical: the J5040 was released later. The part numbers are SRFDB for the J5040 and SR35C for the i3-7100. The launch MSRP for the J5040 is $161; the i3-7100 has no launch MSRP in the database.

The PCIe support is a major differentiator. The J5040 has PCIe Gen 2 with 6 lanes (CPU only). The i3-7100 has PCIe Gen 3 with 16 lanes (CPU only). This gives the i3-7100 a significant advantage for discrete GPUs and high-speed NVMe drives, as PCIe Gen 3 offers double the bandwidth per lane of Gen 2, and 16 lanes versus 6 lanes is a large throughput gap. The memory support is identical in terms of type (DDR4), channel count (dual-channel), and bandwidth (38.4 GB/s). Neither supports ECC memory, and both have locked multipliers.

Architecture Differences

The J5040 is built on the Goldmont Plus architecture, codename Gemini Lake. The i3-7100 uses Kaby Lake architecture. Both are manufactured on a 14 nm process at Intel's foundry, but the microarchitectures are generations apart. Goldmont Plus is a low-power Atom-derived design optimized for efficiency, while Kaby Lake is a mainstream desktop architecture derived from Skylake, with higher per-clock performance at the cost of much higher power consumption.

The J5040's die size is recorded at 93 mm². The i3-7100 has no die size in the database. The J5040's smaller die size, combined with its 10W TDP, reflects its mobile design goals. The Goldmont Plus architecture in the J5040 is a change from the previous generation, the Pentium Silver J5005 which appears as a rival to the i3-7100. The J5040's generation is listed as Pentium (Goldmont Plus), while the i3-7100's generation is Core i3 (Kaby Lake).

The lack of a boost clock on the i3-7100 is a key architectural difference. Kaby Lake desktop i3 parts were typically fixed-clock, running at a constant frequency. The J5040, being a mobile part, uses a boost clock to reach higher frequencies when thermal and power headroom allow. In the benchmark data, the J5040's boost behavior does not appear to hurt it; it wins every test despite the i3-7100's higher sustained clock.

The cache architecture also differs at a fundamental level. The J5040 uses a shared L2 design with 4 MB across all cores, with no L3. This is typical of low-power SoCs where a large shared L2 serves as the last-level cache. The i3-7100 uses per-core L2 and a shared L3, which is the traditional desktop layout. The i3-7100's 3 MB of L3 is shared, but its per-core L2 is smaller than the J5040's shared L2 in aggregate. In practice, the head-to-head Cinebench results show the J5040's cache design does not impede its performance in these specific workloads.

The integrated GPU architectures are also different. The J5040's UHD Graphics 605 is part of the Gemini Lake SoC, which has a newer media engine. The i3-7100's Intel HD 630 is a Kaby Lake-era GPU. Both support common video decode and encode features, but the J5040's GPU is integrated into a lower-power platform. Neither processor supports ECC memory, and both are limited to dual-channel DDR4 at 38.4 GB/s.

In summary, the architectural differences are stark: a 14 nm low-power mobile SoC with a shared L2 and no L3 versus a desktop processor with per-core L2, shared L3, and a much higher TDP. The benchmark data shows that, at least in Cinebench, the J5040's architecture delivers superior results across the board. The i3-7100's advantages lie in its PCIe Gen 3 lanes, larger cache hierarchy, and desktop socket, which may matter for system flexibility even if not for raw Cinebench scores.