AMD Ryzen 3 4300G vs Intel Core i5-9600K Comparison

Head-to-Head Benchmarks

The head-to-head data paints a clear picture of dominance for the Intel Core i5-9600K, which secures 15 wins against the AMD Ryzen 3 4300G’s two. The most decisive victories for Intel come in compute-heavy workloads. In PassMark’s find prime numbers test, the i5-9600K scores 43 versus 20, a staggering 115% advantage. Similarly, floating point math shows a 41.7% gap (24,913 vs 17,577), and extended instructions land at a 41.2% delta (12,914 vs 9,148). These aren’t marginal edges; they represent fundamental throughput differences in mathematical and SIMD-heavy tasks.

Across the Cinebench suite, the i5-9600K maintains a consistent lead of roughly 8% in every render test. In Cinebench R23 multi-core, it posts 9,055 against 8,387, while single-core shows 1,278 versus 1,184. The pattern repeats in R20 (3,803 vs 3,522 multi; 536 vs 497 single) and R15 (912 vs 845 multi; 128 vs 119 single). The deltas stay remarkably stable between 7.6% and 8.0%, suggesting a uniform clock-for-clock advantage rather than workload-specific quirks. PassMark multi-thread follows the same 8% trend (10,636 vs 9,849), as does data compression (148,639 vs 137,681).

The AMD Ryzen 3 4300G’s two wins are narrower but notable. Data encryption is a blowout in AMD’s favor: 8,176 versus 3,269, a -60% delta from Intel’s perspective. That’s a 2.5x raw score advantage, likely reflecting the Zen 2 core’s hardware acceleration for cryptographic instructions. The other win is slim: integer math at 29,737 versus 29,215, a 1.8% margin. In physics simulation, Intel dominates with a 64.3% delta (746 vs 454), and random string sorting favors Intel by 26.3% (18,313 vs 14,503). Single-thread performance shows Intel ahead by 12.5% (2,727 vs 2,425), reinforcing that the i5-9600K’s higher boost clock translates directly into faster sequential execution.

Architecture Differences

The two processors come from different design philosophies and process generations. The Intel Core i5-9600K is a Coffee Lake part built on Intel’s 14 nm node, while the AMD Ryzen 3 4300G uses the Zen 2 architecture on TSMC’s 7 nm process. The node difference is stark: 14 nm versus 7 nm, which explains why the Ryzen packs 9,800 million transistors into a 156 mm² die despite having fewer cores. The Intel chip’s transistor count and die size are not listed, but the process gap is a key differentiator in efficiency and density.

Core and thread counts diverge significantly. The i5-9600K offers 6 cores and 6 threads, while the Ryzen 3 4300G provides 4 cores and 8 threads via simultaneous multithreading. This means Intel has two additional physical cores, but AMD can process twice as many threads per core. The cache hierarchy reflects this: Intel allocates 64 KB L1 and 256 KB L2 per core, with 9 MB of shared L3. AMD matches the 64 KB L1 but doubles L2 to 512 KB per core, yet only offers 4 MB of shared L3. That 5 MB L3 deficit is substantial for workloads that rely on large shared caches.

Clock speeds tell a familiar story. The i5-9600K has a 3.70 GHz base clock and boosts to 4.60 GHz, while the Ryzen 3 4300G starts at 3.80 GHz but only reaches 4.00 GHz at peak. The 600 MHz boost advantage for Intel is the single largest contributor to its single-thread wins. Both chips are multiplier-unlocked, so overclocking headroom exists for both, though the data does not specify unlocked clock ceiling. Thermal design power favors AMD: 65 W versus 95 W, a 30 W difference that suggests lower operating temperatures and power draw for the Ryzen.

Memory bandwidth is another area where AMD leads. The Ryzen 3 4300G supports DDR4 dual-channel with 51.2 GB/s bandwidth, compared to Intel’s 42.7 GB/s. Both run on dual-channel memory and support DDR4 modules. The i5-9600K uses Intel Socket 1151, while the Ryzen 3 4300G fits AMD Socket AM4. Both provide PCIe Gen 3 with 16 CPU lanes. Integrated graphics differ: Intel has UHD 630, AMD has Radeon Vega 6. The Ryzen’s integrated GPU is generally considered more capable, though no benchmark data for iGPU performance is provided in the pack.

The manufacturing timeline shows Intel’s part released on 2018-10-18 and now end-of-life, while AMD’s launched 2020-07-20 and remains active. The Ryzen 3 4300G is part of the 4000 series (Renoir) generation, whereas the i5-9600K belongs to the Coffee Lake Refresh lineup. Neither chip supports ECC memory. The AMD part’s smaller process node and newer release date suggest architectural maturity, but the benchmark results show Intel’s older design still holds a performance edge in most tests.

The Verdict

The data is unambiguous for most workloads: the Intel Core i5-9600K is the stronger processor. Across every Cinebench iteration and the majority of PassMark tests, Intel wins by margins ranging from 7.6% to 115%. The i5-9600K’s 6 physical cores, despite lacking hyperthreading, outperform the Ryzen 3 4300G’s 4 cores with 8 threads in multi-threaded benchmarks. The 8% lead in Cinebench R23 multi-core (9,055 vs 8,387) and PassMark multi-thread (10,636 vs 9,849) shows that two extra physical cores outweigh AMD’s SMT advantage in these workloads.

Users should pick the Intel Core i5-9600K if their priority is raw compute performance, particularly in rendering, physics simulation, floating-point math, or single-threaded applications. The 12.5% single-thread lead and 64.3% physics advantage make it the clear choice for gaming and lightly threaded productivity. The 115% edge in prime number finding and 41.7% in floating point math also favor scientific and engineering workloads.

However, the AMD Ryzen 3 4300G has a specific niche. Its data encryption performance is exceptional—2.5x better than Intel—making it the superior choice for cryptographic workloads, secure communications, or any application that heavily uses AES-style instructions. The 1.8% integer math win is negligible, but the encryption result is not. Additionally, the Ryzen’s 65 W TDP versus Intel’s 95 W makes it more suitable for compact builds or systems where thermal output matters. The newer 7 nm process and active production status also mean better availability and continued support.

The average benchmark scores are nearly identical—14,605 for Intel versus 14,503 for AMD, a 0.7% difference. Both CPUs sit at the 69th percentile among all processors. The nearest rivals for Intel include the AMD Ryzen 5 5500U (0.1% higher), AMD EPYC 7473X (0.2% higher), and Intel Xeon 6315P (0.2% higher), while AMD’s closest neighbors are the Ryzen 3 4100 (equal), Xeon 6315P (-0.5%), and EPYC 7473X (-0.5%). This places both firmly in the mid-range tier, with Intel marginally ahead on average.

FAQ

Q: Which processor wins in Cinebench R23 multi-core?

A: The Intel Core i5-9600K wins with a score of 9,055 versus 8,387 for the AMD Ryzen 3 4300G, an 8% advantage.

Q: How much faster is the Intel chip in single-thread performance?

A: In PassMark single-thread, Intel scores 2,727 versus 2,425 for AMD, a 12.5% lead. The Cinebench R23 single-core test shows 1,278 versus 1,184, a 7.9% margin.

Q: Is there any benchmark where the AMD Ryzen 3 4300G wins decisively?

A: Yes, in PassMark data encryption, AMD scores 8,176 versus Intel’s 3,269, a 60% delta in AMD’s favor (2.5x raw performance). AMD also wins integer math by 1.8% (29,737 vs 29,215).

Q: What are the core and thread counts for each chip?

A: The Intel Core i5-9600K has 6 cores and 6 threads. The AMD Ryzen 3 4300G has 4 cores and 8 threads due to simultaneous multithreading.

Q: How do their process nodes compare?

A: Intel uses a 14 nm process from its own foundry, while AMD uses TSMC’s 7 nm node. The Ryzen 3 4300G has 9,800 million transistors on a 156 mm² die.

Q: Which CPU has higher memory bandwidth?

A: The AMD Ryzen 3 4300G supports 51.2 GB/s, while the Intel Core i5-9600K provides 42.7 GB/s. Both use dual-channel DDR4 memory.

Where Each One Wins

The Intel Core i5-9600K is the winner in virtually every general-purpose and compute-intensive scenario. Its 8% lead across the entire Cinebench suite makes it the better choice for 3D rendering, video encoding, and any workload that scales with cores. The 41.7% advantage in floating point math and 41.2% in extended instructions positions it well for scientific computing, financial modeling, and audio processing. The 64.3% physics win suggests better performance in simulation and physics engines used by engineering software and games. The 26.3% random string sorting advantage helps with database operations and data processing pipelines. The 8% data compression lead benefits file archiving and backup tasks. The 12.5% single-thread edge means faster application launches, snappier web browsing, and better responsiveness in everyday desktop use. The 115% prime number finding result indicates superior performance in cryptographic key generation and mathematical sieving algorithms.

The AMD Ryzen 3 4300G wins in two specific areas. Data encryption is the standout: 2.5x better throughput makes it the clear pick for VPN gateways, encrypted storage, secure web servers, or any workload relying on AES-NI style instructions. The 1.8% integer math win is marginal but exists, meaning workloads that are purely integer-bound without SIMD extensions might see a slight edge. Beyond benchmarks, the Ryzen’s 65 W TDP versus Intel’s 95 W makes it preferable for small form factor PCs, silent builds, or systems with limited cooling capacity. The 7 nm process and 51.2 GB/s memory bandwidth also suggest better efficiency and memory-bound performance, even if the cache size (4 MB L3) is smaller than Intel’s 9 MB. For users who need integrated graphics, the Radeon Vega 6 is present, though no iGPU benchmark data is available to quantify the difference against UHD 630.