Intel Core i3-12300 vs Intel Core i5-10600K Comparison

The Intel Core i5-10600K and the Intel Core i3-12300 land in the same performance neighborhood, but the data reveals a clear generational shift. The i3-12300, a 12th Gen Alder Lake part, holds a slight but consistent edge across every benchmark in the head-to-head comparison, despite having fewer cores and threads. The numbers tell a story of architectural efficiency overcoming raw core count.

Head-to-Head Benchmarks

The benchmark results are remarkably consistent, with the Intel Core i3-12300 winning all six head-to-head comparisons. In Cinebench R15 multicore, the i3-12300 scores 1230 against the i5-10600K's 1220, a delta of -0.8%. That gap widens slightly in Cinebench R20 multicore, where the i3-12300 posts 5128 versus 5084, a -0.9% difference. The pattern holds in Cinebench R23 multicore: 12211 for the i3-12300, 12106 for the i5-10600K, again a -0.9% delta.

Single-core performance tells the same story. In Cinebench R15 single-core, the i3-12300 leads 173 to 172, a -0.6% difference. The margin grows to -1% in Cinebench R20 single-core, with scores of 724 and 717. Cinebench R23 single-core shows 1724 for the i3-12300 against 1709 for the i5-10600K, a -0.9% gap.

What makes these results striking is the core-count disparity. The i5-10600K has 6 cores and 12 threads, while the i3-12300 has only 4 cores and 8 threads. Yet the smaller chip wins every single test. The average benchmark scores reflect this parity: the i5-10600K averages 3533, while the i3-12300 averages 3532. Both CPUs sit at the 55th percentile among all CPUs, and each lists the other as a nearest rival with a deltaPct of 0. The i3-12300's wins are narrow, but they are universal.

Architecture Differences

The fundamental difference lies in the process node and microarchitecture. The i5-10600K uses Comet Lake, built on Intel's 14 nm process, while the i3-12300 uses Alder Lake-S on a 10 nm process. This node advantage explains how the i3-12300 compensates for its lower core count. The i3-12300 also has a smaller die size at 163 mm², though the i5-10600K's die size is not listed for comparison.

Cache configurations differ significantly. The i5-10600K has 64 KB of L1 cache per core, 256 KB of L2 per core, and 12 MB of shared L3 cache. The i3-12300 has 80 KB of L1 per core, a much larger 1.25 MB of L2 per core, and the same 12 MB of shared L3. The larger L2 cache on the i3-12300 likely contributes to its per-core efficiency, allowing it to maintain competitive throughput with fewer physical cores.

Clock speeds tell a nuanced story. The i5-10600K has a higher base clock at 4.10 GHz and a higher boost clock at 4.80 GHz, compared to 3.50 GHz base and 4.40 GHz boost on the i3-12300. Despite the lower clocks, the i3-12300 wins. This implies the Alder Lake architecture extracts more instructions per clock, and the 10 nm node allows for better power efficiency. The i5-10600K has a TDP of 125 watts, while the i3-12300 draws only 60 watts, a substantial efficiency advantage. The i3-12300 also offers broader memory support, handling both DDR4 and DDR5, whereas the i5-10600K is limited to DDR4. The i3-12300 provides PCIe Gen 5 with 20 lanes, compared to Gen 3 with 16 lanes on the i5-10600K. The i5-10600K does have an unlocked multiplier, while the i3-12300 is locked.

The i5-10600K includes UHD Graphics 630, while the i3-12300 has UHD Graphics 730. The i3-12300 was released later, though its exact release date is not listed, and it carries a launch MSRP of $143. The i5-10600K has no listed launch MSRP.

The Verdict

The data points to a clear verdict: the Intel Core i3-12300 is the superior processor in terms of pure performance. It wins every head-to-head benchmark, from Cinebench R15 through R23, in both single-core and multicore tests. The margins are small, ranging from -0.6% to -1%, but they are consistent across all six tests. The i3-12300 achieves this with 4 cores and 8 threads, half the thread count of the i5-10600K, and with significantly lower power consumption at 60 watts versus 125 watts.

For users building a new system, the i3-12300 offers a more modern platform with DDR5 support, PCIe Gen 5, and a 10 nm process. The i5-10600K, while still competitive in raw scores, relies on an older 14 nm architecture and a platform that maxes out at DDR4 and PCIe Gen 3. The i3-12300 also has a locked multiplier, but its architectural advantages make overclocking less necessary. The i5-10600K's unlocked multiplier could appeal to enthusiasts, but the benchmark data shows it cannot match the i3-12300 even with its higher clocks. The i3-12300 is the pick for anyone prioritizing performance and efficiency.

FAQ

Q: Which CPU has more cores and threads?

A: The Intel Core i5-10600K has 6 cores and 12 threads, while the Intel Core i3-12300 has 4 cores and 8 threads.

Q: Does the Intel Core i3-12300 win any benchmarks against the i5-10600K?

A: Yes, the i3-12300 wins all six head-to-head tests, including Cinebench R15, R20, and R23 in both single-core and multicore modes.

Q: What is the performance difference in the largest winning margin?

A: The largest margin is -1% in Cinebench R20 single-core, where the i3-12300 scores 724 and the i5-10600K scores 717.

Q: How do the average benchmark scores compare?

A: The i5-10600K has an average benchmark score of 3533, while the i3-12300 averages 3532, placing them within 0.1% of each other.

Q: What are the process node differences?

A: The i5-10600K uses a 14 nm process, while the i3-12300 uses a 10 nm process.

Q: Does either CPU support DDR5 memory?

A: The i3-12300 supports both DDR4 and DDR5, while the i5-10600K supports only DDR4.

Where Each One Wins

The i3-12300 wins across the board in benchmarking, but the use cases differ based on platform features. The i3-12300 is the better choice for new builds that want modern memory and I/O standards. Its support for DDR5 and PCIe Gen 5 with 20 lanes makes it forward-looking. The 60-watt TDP also makes it suitable for compact or power-conscious systems where thermal headroom is limited. Its locked multiplier is a minor drawback, but the performance data shows it does not need overclocking to beat the i5-10600K.

The i5-10600K retains some advantages. Its unlocked multiplier appeals to users who plan to overclock, and its higher base and boost clocks (4.10 GHz and 4.80 GHz) provide headroom for manual tuning. With 6 cores and 12 threads, it offers more parallel processing resources, which could benefit workloads that scale with thread count, though the benchmark data shows the i3-12300 still wins in multicore Cinebench tests. The i5-10600K also works on the Intel Socket 1200 platform, which may be relevant for users upgrading an existing system. Its 125-watt TDP requires a more robust cooling solution, but it supports the older DDR4 memory standard, which can be a cost advantage for users with existing DDR4 modules.

Specification Differences

The two CPUs differ in nearly every core specification. The i5-10600K has 6 cores and 12 threads, while the i3-12300 has 4 cores and 8 threads. Base clocks are 4.10 GHz for the i5-10600K and 3.50 GHz for the i3-12300. Boost clocks are 4.80 GHz and 4.40 GHz, respectively. The i5-10600K has a TDP of 125 watts, while the i3-12300 has a TDP of 60 watts.

The sockets differ: the i5-10600K uses Intel Socket 1200, and the i3-12300 uses Intel Socket 1700. The process nodes are 14 nm for Comet Lake and 10 nm for Alder Lake. Cache hierarchies are different, with the i5-10600K featuring 64 KB L1 per core and 256 KB L2 per core, while the i3-12300 has 80 KB L1 per core and 1.25 MB L2 per core. Both share 12 MB of L3 cache. The i3-12300 has a die size of 163 mm², while the i5-10600K's die size is not listed.

Memory support differs significantly: the i5-10600K supports DDR4 only, while the i3-12300 supports DDR4 and DDR5. The i5-10600K has a memory bandwidth of 42.7 GB/s, while the i3-12300's bandwidth is not listed. PCIe support differs, with the i5-10600K offering Gen 3 with 16 lanes and the i3-12300 offering Gen 5 with 20 lanes. Integrated graphics differ: UHD Graphics 630 on the i5-10600K versus UHD Graphics 730 on the i3-12300. The i5-10600K has an unlocked multiplier, while the i3-12300 is locked. The part numbers are SRH6R for the i5-10600K and SRL61 for the i3-12300. The i3-12300 has a launch MSRP of $143, while the i5-10600K has none listed.