AMD Ryzen 3 PRO 8300G vs Intel Core Ultra 5 115U Comparison

Head-to-Head Benchmarks

The benchmark data presents a clear split between the Intel Core Ultra 5 115U and the AMD Ryzen 3 PRO 8300G. The AMD processor wins 13 of the 17 recorded head-to-head tests, while the Intel chip takes 4 victories. The most decisive AMD wins come in the Cinebench suite, where the Ryzen 3 PRO 8300G leads by roughly 12% across all six tests. In Cinebench R23 multi-core, the AMD scores 12359 against Intel's 10855, a delta of -12.2%. The single-core R23 test shows the same pattern: AMD at 1744 versus Intel at 1532, again a 12.2% gap. The consistency of this margin across R15, R20, and R23 suggests a fundamental architectural advantage rather than a workload-specific quirk.

The AMD processor also dominates in PassMark's extended instructions test, scoring 11451 against Intel's 8620, a 24.7% advantage. This is the largest percentage delta in either direction. Random string sorting also favors AMD heavily, with scores of 19703 versus 15124, a 23.2% gap. Single-thread PassMark results show AMD ahead at 3550 versus 3057, a 13.9% difference. Data compression goes to AMD as well, 150567 versus 141945, a 5.7% margin.

The Intel Core Ultra 5 115U, however, posts some notable wins of its own. The largest is in floating-point math, where Intel scores 30538 against AMD's 23374, a commanding 30.6% lead. Integer math also goes to Intel, 41043 versus 37292, a 10.1% advantage. The physics test favors Intel at 898 versus 772, a 16.3% margin. Prime number finding is the closest Intel win, 53 versus 47, a 12.8% delta. The data encryption test is effectively a tie, with scores of 8606 and 8607, a 0% difference.

Where Each One Wins

The use-case split becomes clearer when examining the nature of the benchmark tests. The AMD Ryzen 3 PRO 8300G excels in compression workloads, string sorting, and extended instruction sets, which points toward productivity and data-processing tasks. Its consistent Cinebench leads, both multi-core and single-core, indicate strong rendering performance and general computational throughput. The PassMark multithread score of 13368 versus 13024, a 2.6% edge, reinforces that AMD holds a slight overall multi-threaded advantage despite having fewer cores.

The Intel Core Ultra 5 115U, meanwhile, shows a distinct affinity for math-heavy workloads. The 30.6% lead in floating-point math is striking, and the 10.1% edge in integer math suggests Intel's execution units handle arithmetic operations more efficiently. The physics test, which often relies on floating-point calculations, follows the same trend with Intel ahead by 16.3%. For workloads involving scientific computation, simulation, or financial modeling, the Intel chip appears better suited. Prime number finding, a pure integer operation, also favors Intel, though by a smaller margin.

Architecture Differences

The two processors come from fundamentally different design philosophies. The Intel Core Ultra 5 115U uses the Meteor Lake architecture, built on a 7 nm process at Intel's own foundry. It packs 8 cores and 10 threads, indicating a hybrid arrangement with efficiency cores alongside performance cores. The L1 cache is listed at 112 KB per core, L2 at 2 MB per core, and L3 at 10 MB shared. The integrated graphics are Arc Xe-LPG with 48 execution units. This chip targets the mobile market segment, with a 15 W TDP and an Intel BGA 2049 socket.

The AMD Ryzen 3 PRO 8300G uses the Zen 4 architecture, codenamed Phoenix2, fabricated on a 4 nm process at TSMC. It has 4 cores and 8 threads, all presumably full performance cores given the lack of hybrid design. The cache structure is smaller per core: 64 KB L1, 1 MB L2, and 8 MB shared L3. The integrated graphics are Radeon 740M. This is a desktop part, fitting an AMD Socket AM5 with a 65 W TDP. AMD lists 20,900 million transistors on a 137 mm² die, figures not available for Intel.

The process node difference is notable: 4 nm for AMD versus 7 nm for Intel. This likely explains part of the power efficiency and clock speed gap. AMD's base clock of 3.40 GHz and boost of 4.90 GHz far exceed Intel's 1.50 GHz base and 4.20 GHz boost. Despite having fewer cores, AMD achieves higher Cinebench scores, which points to the strength of its Zen 4 cores and the manufacturing advantage of the smaller node.

Specification Differences

The two chips diverge across nearly every specification field. The Intel Core Ultra 5 115U offers 8 cores and 10 threads, while the AMD Ryzen 3 PRO 8300G provides 4 cores and 8 threads. Clock speeds differ substantially: Intel has a 1500.00 MHz base and 4.20 GHz boost, while AMD runs at 3400.00 MHz base and 4.90 GHz boost. TDP is another major gap, with Intel at 15 W and AMD at 65 W.

Memory support differs in a key area: Intel supports DDR5 but notes "depends on motherboard," while AMD also supports DDR5. Both use dual-channel memory buses, but Intel's bandwidth is rated at 89.6 GB/s versus AMD's 83.2 GB/s. AMD supports ECC memory, Intel does not. PCIe lanes favor AMD with 14 Gen 4 lanes versus Intel's 12 Gen 4 lanes. The integrated graphics differ as well: Intel uses Arc Xe-LPG 48EU, AMD uses Radeon 740M.

The release dates are approximately four months apart, with Intel launching on 2023-12-13 and AMD on 2024-04-15. Both are marked as Active production status. Neither has a launch MSRP in the database. The market segments are split: Intel targets Mobile, AMD targets Desktop.

FAQ

Q: Which processor has more cores?

A: The Intel Core Ultra 5 115U has 8 cores and 10 threads, while the AMD Ryzen 3 PRO 8300G has 4 cores and 8 threads.

Q: Why does AMD win most benchmarks despite having fewer cores?

A: The AMD chip has a higher base clock of 3.40 GHz versus 1.50 GHz, a boost of 4.90 GHz versus 4.20 GHz, and uses a 4 nm process compared to Intel's 7 nm. These factors appear to compensate for the core deficit.

Q: Where does Intel show the biggest advantage?

A: Intel wins floating-point math by 30.6%, scoring 30538 against AMD's 23374. It also leads in integer math by 10.1% and physics by 16.3%.

Q: How close is the overall average benchmark score?

A: AMD averages 17278 points, while Intel averages 16753 points, a difference of about 3%. AMD ranks in the 71st percentile of all CPUs, Intel in the 70th.

Q: Which chip supports ECC memory?

A: The AMD Ryzen 3 PRO 8300G supports ECC memory. The Intel Core Ultra 5 115U does not.

Q: What are the memory bandwidth ratings for each?

A: Intel is rated at 89.6 GB/s, while AMD is rated at 83.2 GB/s, despite AMD winning most computational benchmarks.

The Verdict

The data paints a nuanced picture. The AMD Ryzen 3 PRO 8300G is the stronger all-around performer, winning 13 of 17 tests and holding a higher average benchmark score of 17278 versus 16753. Its Cinebench leads of roughly 12% across every version indicate a clear rendering and multi-core advantage. The 24.7% lead in extended instructions and 23.2% lead in string sorting further establish AMD's dominance in data-heavy tasks. For users running productivity suites, compression tools, or rendering software, the Ryzen 3 PRO 8300G is the evident choice.

The Intel Core Ultra 5 115U, however, should not be dismissed. Its 30.6% lead in floating-point math and 10.1% lead in integer math indicate superior arithmetic throughput. The 16.3% physics advantage suggests simulation and scientific workloads would favor Intel. The 15 W TDP versus 65 W also implies Intel's chip is designed for power-sensitive mobile environments, where the AMD desktop part would be impractical. The benchmark database shows Intel's nearest rivals include the Core i5-1235U and Ryzen 3 7335U, all within 0.6% of its score, while AMD's rivals like the Core i5-12450H and Ryzen 3 210 sit within 0.3%. The recorded data suggests AMD for desktop productivity and Intel for mobile math-heavy tasks, with the final choice depending on the target platform and workload profile.