AMD Ryzen 3 8300G vs AMD Ryzen AI 9 HX 375 Comparison

Head-to-Head Benchmarks

The benchmark data presents a decisive outcome: the AMD Ryzen AI 9 HX 375 wins every single head-to-head comparison against the AMD Ryzen 3 8300G, taking all 15 recorded tests. The largest margins appear in heavily parallel workloads, where the Ryzen AI 9 HX 375's 12-core configuration separates itself clearly from the 8300G's 4-core design.

In Cinebench R23 multi-core, the Ryzen AI 9 HX 375 scores 21812 against 12217 for the 8300G, a 44.0% advantage. The single-core gap is far narrower: 1988 versus 1724, a 13.3% difference. This pattern repeats across the Passmark suite. Integer math shows the biggest delta at 66.7% (121754 vs 40534), followed by floating-point math at 66.3% (75153 vs 25336). Data compression favors the Ryzen AI 9 HX 375 by 60.7% (404918 vs 158952), while prime number finding shows a 61.5% gap (122 vs 47).

The closest contest is in single-threaded Passmark performance, where the Ryzen AI 9 HX 375 leads by only 2.3% (3867 vs 3778). This modest margin indicates that per-core architectural improvements in Zen 5 over Zen 4 are real but not dramatic, and the 8300G's higher 4.90 GHz boost clock helps it stay competitive in lightly threaded tasks. Still, the Ryzen AI 9 HX 375's 5.10 GHz boost clock and newer architecture edge it out.

Other notable results: data encryption shows a 56.2% gap (20802 vs 9115), extended instructions a 57.8% gap (29269 vs 12354), and random string sorting a 57.3% gap (44552 vs 19013). Multithread Passmark shows a 57.4% difference (32916 vs 14018), and physics testing a 58.5% difference (1819 vs 755). In Cinebench R15, the multi-core gap is 63.1% (3334 vs 1231), while single-core is 42.5% (301 vs 173).

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD Ryzen AI 9 HX 375 records an average benchmark score of 46030, compared to 18169 for the AMD Ryzen 3 8300G. The Ryzen AI 9 HX 375 also places in the 89th percentile of all CPUs, while the 8300G sits in the 72nd percentile.

Q: How do their core and thread counts differ?

A: The Ryzen 3 8300G has 4 cores and 8 threads, while the Ryzen AI 9 HX 375 has 12 cores and 24 threads. This 3x core advantage and 3x thread advantage directly explains the large multi-threaded benchmark gaps.

Q: What are the clock speed differences?

A: The Ryzen 3 8300G has a base clock of 3.40 GHz and a boost clock of 4.90 GHz. The Ryzen AI 9 HX 375 has a lower base clock of 2.00 GHz but a higher boost clock of 5.10 GHz. The higher boost clock contributes to the Ryzen AI 9 HX 375's single-thread wins.

Q: Do both processors use the same socket?

A: No. The Ryzen 3 8300G uses AMD Socket AM5, designed for desktop systems, while the Ryzen AI 9 HX 375 uses AMD Socket FP8, designed for mobile platforms.

Q: What are the TDP ratings?

A: The Ryzen 3 8300G has a 65 W TDP, while the Ryzen AI 9 HX 375 has a 28 W TDP. Despite the Ryzen AI 9 HX 375 drawing less power, it still outperforms the 8300G across all benchmarks.

Q: Which processor supports ECC memory?

A: The Ryzen 3 8300G supports ECC memory, while the Ryzen AI 9 HX 375 does not. Both support DDR5, but the Ryzen AI 9 HX 375 adds LPDDR5X support.

Architecture Differences

The two processors come from different architectural generations and target different market segments. The Ryzen 3 8300G is a desktop part built on Zen 4 architecture with the Phoenix2 codename, released in January 2024. The Ryzen AI 9 HX 375 is a mobile part built on Zen 5 architecture with the Strix Point codename, released in June 2024. Both use a 4 nm process from TSMC, but the die sizes differ substantially: 137 mm² for the 8300G versus 233 mm² for the Ryzen AI 9 HX 375. Transistor counts are listed only for the 8300G at 20,900 million.

Cache hierarchies differ significantly. The Ryzen 3 8300G has 64 KB L1 per core, 1 MB L2 per core, and 8 MB shared L3. The Ryzen AI 9 HX 375 has 80 KB L1 per core, 1 MB L2 per core, and 16 MB shared L3. Doubling the L3 cache gives the Ryzen AI 9 HX 375 more room for frequently accessed data, which helps in multi-threaded workloads.

Memory support shows both support DDR5 with dual-channel buses, but the Ryzen AI 9 HX 375 also supports LPDDR5X. Memory bandwidth is slightly higher on the Ryzen AI 9 HX 375 at 89.6 GB/s versus 83.2 GB/s. PCIe connectivity favors the Ryzen AI 9 HX 375 with 16 Gen 4 lanes, compared to 14 Gen 4 lanes on the 8300G.

Integrated graphics differ as well: the 8300G uses Radeon 740M, while the Ryzen AI 9 HX 375 uses Radeon 890M. The Ryzen 3 8300G is part of the 8000 series and belongs to the Ryzen 3 generation, while the Ryzen AI 9 HX 375 belongs to the Ryzen AI 300 generation, which combines Zen 5 and Zen 5c cores. Neither processor has an unlocked multiplier.

The Verdict

The benchmark data shows that the AMD Ryzen AI 9 HX 375 is the superior processor in every measured workload. With a 89th percentile ranking versus the 72nd percentile for the Ryzen 3 8300G, and an average benchmark score of 46030 versus 18169, the performance hierarchy is unambiguous. The Ryzen AI 9 HX 375 delivers more than double the multi-core performance in several tests, including a 66.7% lead in integer math and a 66.3% lead in floating-point math.

The Ryzen 3 8300G does not win a single head-to-head test. Its closest showing is in Passmark single-thread performance, where it trails by only 2.3%. This suggests that for purely single-threaded desktop tasks, the 8300G is competitive, but it cannot match the Ryzen AI 9 HX 375's overall throughput.

The 8300G does offer ECC memory support, which the Ryzen AI 9 HX 375 lacks. It also uses the AM5 socket, which is a desktop platform, whereas the Ryzen AI 9 HX 375 uses the FP8 mobile socket. The 8300G has a higher base clock (3.40 GHz vs 2.00 GHz) and a 65 W TDP versus 28 W, indicating it is designed for sustained desktop operation. The Ryzen AI 9 HX 375 compensates with a higher boost clock (5.10 GHz vs 4.90 GHz) and a more efficient power envelope.

For users who need maximum compute throughput in multi-threaded applications, the Ryzen AI 9 HX 375 is the clear choice based on the recorded data. For users who require ECC memory and a desktop socket, the Ryzen 3 8300G provides that specific functionality, though with significantly lower performance.

Specification Differences

The two processors differ across nearly every specification. The Ryzen 3 8300G has 4 cores and 8 threads, while the Ryzen AI 9 HX 375 has 12 cores and 24 threads. Base clocks differ: 3.40 GHz for the 8300G versus 2.00 GHz for the Ryzen AI 9 HX 375. Boost clocks favor the Ryzen AI 9 HX 375 at 5.10 GHz versus 4.90 GHz. TDP ratings are 65 W for the 8300G and 28 W for the Ryzen AI 9 HX 375.

Sockets differ: AM5 for the desktop 8300G, FP8 for the mobile Ryzen AI 9 HX 375. Architecture moves from Zen 4 to Zen 5, with codenames Phoenix2 and Strix Point respectively. Die size increases from 137 mm² to 233 mm². L1 cache per core increases from 64 KB to 80 KB, and L3 cache doubles from 8 MB to 16 MB. L2 remains 1 MB per core for both.

Memory support adds LPDDR5X on the Ryzen AI 9 HX 375, while both support DDR5. Memory bandwidth is 83.2 GB/s for the 8300G and 89.6 GB/s for the Ryzen AI 9 HX 375. ECC memory is supported only on the 8300G. PCIe lanes increase from 14 to 16, both Gen 4. Integrated graphics differ: Radeon 740M versus Radeon 890M. Market segment is Desktop for the 8300G and Mobile for the Ryzen AI 9 HX 375. The launch MSRP for the 8300G is $176; no launch MSRP is recorded for the Ryzen AI 9 HX 375.

Where Each One Wins

The AMD Ryzen AI 9 HX 375 wins in all 15 recorded benchmark comparisons, so the use-case split is straightforward. The Ryzen AI 9 HX 375 is the stronger choice for multi-threaded workloads such as data compression (404918 vs 158952), data encryption (20802 vs 9115), integer math (121754 vs 40534), and floating-point math (75153 vs 25336). It also dominates in physics simulations (1819 vs 755) and extended instruction workloads (29269 vs 12354). Cinebench R23 multi-core shows 21812 versus 12217, confirming its advantage in rendering and content creation tasks.

The Ryzen 3 8300G has no benchmark wins, but its closest margins reveal where it comes near parity. In Passmark single-thread performance, the 8300G trails by only 2.3% (3778 vs 3867). This indicates that for lightly threaded applications like basic office work or web browsing, the performance difference is minimal. The 8300G's higher base clock of 3.40 GHz versus 2.00 GHz might also be relevant for tasks that rely on sustained base frequency rather than boost behavior.

The Ryzen 3 8300G additionally offers ECC memory support, which the Ryzen AI 9 HX 375 does not. This makes the 8300G the appropriate choice for systems requiring error-correcting memory, even though its overall performance is lower. The 8300G also uses the AM5 desktop socket, making it suitable for desktop builds, while the Ryzen AI 9 HX 375 targets mobile platforms with the FP8 socket.

In scenarios where the 28 W TDP of the Ryzen AI 9 HX 375 matters, such as battery-powered mobile devices, the Ryzen AI 9 HX 375 delivers far higher performance per watt than the 65 W desktop part. For desktop users prioritizing raw throughput, the Ryzen AI 9 HX 375 still wins every test, but the platform mismatch (mobile socket) means it cannot be installed in standard AM5 desktop motherboards. The Ryzen 3 8300G remains the only viable option for AM5 desktop builds, despite its performance deficit.