Intel Core i3-9300

Intel Core i3-9300 is a 4-core, 4-thread desktop processor built on Intel's 14 nm Coffee Lake architecture, running at a 3.70 GHz base clock with a 4.30 GHz boost. Its average benchmark score of 1768 places it at the 43rd percentile of all CPUs, indicating a mid-pack performer that trades blows with older quad-core parts. The chip carries a 62 W TDP, supports DDR4 memory in dual-channel mode with 38.4 GB/s bandwidth, and includes UHD 630 integrated graphics. The data shows a processor that is competitive with a narrow set of rivals from both Intel and AMD, though its end-of-life status and locked multiplier limit its long-term appeal.

How It Compares

The Intel Core i3-9300 sits in a tightly contested cluster, with its nearest rival being the Intel Core i7-4870HQ, which shares an identical average score of 1768, resulting in a deltaPct of 0. This is a dead heat in aggregate performance, meaning the two chips are statistically indistinguishable in mixed workloads. The i7-4870HQ is a mobile-oriented part, so the i3-9300's desktop positioning gives it a different thermal and upgrade context, but raw benchmark output shows no separation.

Against the AMD Ryzen 5 2400GE, the i3-9300 holds a razor-thin 0.1% advantage, with the AMD part scoring 1766. This delta is negligible in real-world terms, effectively a tie. The Ryzen 5 2400GE includes a more capable integrated GPU on paper, but the benchmark data here reflects CPU-centric tasks only, where the two processors land within rounding error of each other. Users choosing between them would see no meaningful performance difference in the metrics captured.

The Intel Xeon E5-4610 v3 posts a score of 1777, giving it a 0.5% lead over the i3-9300. That margin is small but consistent, suggesting the Xeon's higher core count and server-oriented design edge out the i3 in multi-threaded aggregate scenarios, even if the i3's higher clock speeds narrow the gap. The Xeon is a much older part, though, and the i3-9300's newer architecture closes most of the distance.

The Intel Xeon E3-1241 v3 scores 1758, putting the i3-9300 ahead by 0.6%. This is the largest delta among the nearest rivals, yet still a modest margin. The E3-1241 v3 is a Haswell-era chip, so the Coffee Lake i3's architectural improvements in IPC and clock speed deliver a slight edge, but the gap is far from decisive. In daily use, both would feel comparable for most desktop workloads.

Single-Thread vs Multi-Thread Behavior

The i3-9300's benchmark split reveals a clear strength in single-threaded performance relative to its multi-threaded showing. In Cinebench R23, it scores 863 in single-core and 6114 in multi-core, a ratio of roughly 7.1:1, which is typical for a 4-core/4-thread part without hyper-threading. The single-core score of 863 positions it well above many older quad-cores, benefiting from the 4.30 GHz boost clock and Coffee Lake's IPC improvements.

Multi-threaded performance is constrained by the lack of SMT, meaning the chip handles exactly four threads simultaneously. This shows in Cinebench R20, where the multi-core score of 2567 is respectable for its class but falls behind hyper-threaded rivals that can process eight threads. Real workloads that scale beyond four cores, such as video encoding or 3D rendering, will see the i3-9300 lag behind chips with more threads, even if those chips have lower single-core scores.

For everyday tasks like web browsing, office productivity, and light gaming, the single-thread strength dominates, and the data indicates the i3-9300 handles these with ease. The Cinebench R15 single-core score of 86 reinforces this, showing strong per-core throughput. However, users who regularly compile code, render scenes, or run virtual machines will hit the four-thread ceiling quickly, making the multi-core scores the limiting factor.

The split between the R23 single-core 863 and multi-core 6114 also highlights that the chip's boost clock is sustained effectively under light loads but the absence of additional threads caps scaling. In mixed workloads that alternate between lightly and heavily threaded tasks, the i3-9300 will feel responsive in the former and merely adequate in the latter. Benchmark results indicate a processor optimized for latency-sensitive, single-threaded applications rather than parallel throughput.

Power and Thermals

The i3-9300 carries a 62 W TDP, which places it in the mainstream desktop power class. This is a modest thermal envelope, implying that a stock cooler is sufficient for standard operation, though the lack of a bundled cooler in some retail configurations may require an aftermarket solution. The 14 nm process node from Intel contributes to this efficiency, keeping heat density manageable at the 3.70 GHz base and 4.30 GHz boost clocks.

Given the 62 W TDP, the data suggests the chip pairs well with compact air coolers or low-profile solutions in small form factor builds. The integrated UHD 630 GPU adds a minor thermal load but remains within the same envelope for typical desktop usage. Users pushing sustained all-core loads will see temperatures rise, but the power draw is low enough that high-end liquid cooling is unnecessary.

The locked multiplier (unlocked: false) means overclocking is not an option, so thermal headroom beyond stock settings is irrelevant for performance tuning. The 126 mm² die size is small, which aids in heat dissipation, but the end-of-life production status means no future firmware optimizations are expected. For a 62 W part, the cooling tier implied is entry-level tower coolers or the stock Intel cooler, both of which are adequate for the chip's power delivery.

In multi-threaded benchmarks like Cinebench R23, the 6114 score is achieved without excessive power draw, indicating the processor stays within its TDP under sustained load. This makes it a viable choice for office PCs or budget workstations where noise and heat are secondary concerns. The 38.4 GB/s memory bandwidth also aligns with this power class, ensuring the memory controller does not become a bottleneck at these clock speeds.

FAQ

Q: Does the Intel Core i3-9300 support ECC memory?

A: Yes, the FACT PACK lists ECC memory support as true, making it suitable for entry-level workstation builds where data integrity is prioritized.

Q: What is the launch MSRP of the i3-9300?

A: The launch MSRP is $143, though the chip is now end-of-life, so current street pricing may vary.

Q: How many PCIe lanes does the CPU provide?

A: The processor offers 16 PCIe Gen 3 lanes from the CPU, which is standard for a desktop part of this class.

Q: Is the i3-9300 overclockable?

A: No, the multiplier is locked (unlocked: false), so the chip runs at its stock 3.70 GHz base and 4.30 GHz boost clocks only.

Q: What socket does the i3-9300 use?

A: It uses Intel Socket 1151, which is compatible with Coffee Lake motherboards from that generation.

Q: What is the L3 cache size on the i3-9300?

A: The chip has 8 MB of shared L3 cache, with 64 KB of L1 and 256 KB of L2 per core.

Benchmark Performance

The i3-9300's aggregate benchmark score of 1768 places it in a dead heat with the Intel Core i7-4870HQ, which scores exactly the same (deltaPct 0). This parity is notable because the i7-4870HQ is a quad-core/eight-thread part, meaning the i3-9300 compensates for its lack of hyper-threading with higher clock speeds and newer architecture. In Cinebench R23, the i3-9300's multi-core score of 6114 is competitive for a 4-thread chip, but it would trail a hyper-threaded rival under sustained multi-threaded loads.

Against the AMD Ryzen 5 2400GE, the i3-9300 leads by 0.1%, with scores of 1768 versus 1766. This margin is within noise, and the benchmark data suggests neither chip has a definitive advantage in aggregate. The Ryzen 5 2400GE has a lower TDP and integrated graphics, but the i3-9300's single-core performance, as shown by its R23 single-core score of 863, likely gives it an edge in lightly threaded applications.

The Intel Xeon E5-4610 v3 outperforms the i3-9300 by 0.5%, scoring 1777 versus 1768. The Xeon's advantage likely stems from its higher core count, which boosts multi-threaded aggregate scores, but the i3-9300's newer architecture narrows the gap. In Cinebench R20, the i3-9300's multi-core score of 2567 reflects its four-thread limit, while the Xeon's additional cores would push it higher in heavily threaded tests.

The i3-9300 leads the Intel Xeon E3-1241 v3 by 0.6%, with the latter scoring 1758. This is the largest delta among rivals, yet still a modest 10-point difference. The E3-1241 v3 is an older Haswell part, and the i3-9300's Coffee Lake architecture delivers better IPC and clock-for-clock performance. In Cinebench R15, the i3-9300's single-core score of 86 and multi-core score of 616 demonstrate a balanced profile, but the multi-core score is where the lack of SMT becomes evident compared to the Xeon's hyper-threading.

Across all rivals, the i3-9300's performance deltas range from -0.5% to +0.6%, meaning it sits firmly in a performance cluster where no single chip dominates. The 43rd percentile ranking confirms this middling position, and the data shows that the i3-9300 is best suited for tasks that favor single-thread speed, such as gaming or office work, rather than heavily parallel workloads. Its 4.30 GHz boost clock is the key differentiator, allowing it to match or slightly exceed older hyper-threaded parts in mixed benchmarks despite having half the threads.

The Cinebench R23 scores of 863 single-core and 6114 multi-core highlight the chip's ceiling: single-thread performance is strong, but multi-thread scaling stops at four cores. For users running modern applications that leverage more threads, the i3-9300 will fall behind. However, for its TDP class and socket, the benchmark results indicate a reliable performer that holds its own against a narrow set of rivals, all within a 1% performance band.