AMD Ryzen 5 3400G vs Intel Core i3-10105T Comparison

The AMD Ryzen 5 3400G and Intel Core i3-10105T are two 4-core, 8-thread desktop processors that land within 0.1% of each other in average benchmark score, yet their performance profiles are surprisingly distinct. The Ryzen 5 3400G wins 7 of the 8 head-to-head comparisons, while the i3-10105T takes a decisive victory in Geekbench single-core. Both chips sit at the 46th percentile of all CPUs, and their nearest rivals include the Intel Core i7-8705G and AMD Ryzen 3 3100, all clustered within a 0.4% performance band. The data shows these are near-identical overall performers, but the specific workloads you prioritize will determine the better fit.

Head-to-Head Benchmarks

The Ryzen 5 3400G dominates the Cinebench suite with a consistent 17.7% to 18.1% advantage across every test. In Cinebench R23 multicore, the Ryzen 5 3400G scores 7835 against the i3-10105T's 6656, a 17.7% gap. The single-core Cinebench R23 results tell the same story: 1106 versus 939, a 17.8% margin. This pattern repeats in Cinebench R20 (3290 vs 2795, 17.7% multicore; 464 vs 394, 17.8% single-core) and Cinebench R15 (789 vs 670, 17.8% multicore; 111 vs 94, 18.1% single-core). The consistency of these margins suggests a fundamental architectural advantage for the AMD chip in rendering workloads, not just a single favorable test condition.

Geekbench presents a more nuanced picture. The Ryzen 5 3400G wins the multicore test with 3731 against 3649, but the margin shrinks to just 2.2%. That is a far smaller victory than the Cinebench results would predict. More striking is the single-core Geekbench result, where the Intel Core i3-10105T wins outright with 1265 against 1101, a 13% deficit for the AMD part. This is the only head-to-head win for Intel, and it is substantial. The i3-10105T's 3.90 GHz boost clock is lower than the Ryzen's 4.20 GHz, yet it still manages a 13% single-thread win in Geekbench, indicating superior IPC (instructions per clock) in lighter workloads.

The overall picture shows a processor that is roughly 18% faster in Cinebench across the board, but only 2.2% faster in Geekbench multicore and 13% slower in Geekbench single-core. The average benchmark scores of 2059 (AMD) and 2058 (Intel) confirm these differences cancel out to near parity overall. For builders prioritizing rendering or heavy multi-threaded tasks, the Ryzen 5 3400G is clearly the stronger choice. For general desktop responsiveness or single-threaded applications, the i3-10105T has a measurable edge.

Architecture Differences

The two chips come from different process nodes and architectural generations. The Ryzen 5 3400G uses AMD's Zen+ architecture on a 12 nm process from GlobalFoundries, codenamed Picasso. The Intel Core i3-10105T uses Comet Lake architecture on Intel's own 14 nm process, codenamed Comet Lake-R. The AMD chip has a larger die at 210 mm² and contains 4,940 million transistors, while the Intel die size and transistor count are not listed in the data. The process node difference partially explains the TDP gap: the Ryzen 5 3400G has a 65 W TDP, while the i3-10105T is rated at just 35 W.

Cache configurations differ significantly. The Ryzen 5 3400G has 96 KB of L1 cache per core and 512 KB of L2 per core, with a shared 4 MB L3. The i3-10105T has smaller per-core caches at 64 KB L1 and 256 KB L2, but a larger shared L3 pool of 6 MB. The larger L3 on the Intel part may contribute to its single-thread Geekbench win, while the larger per-core L1 and L2 on the AMD part could help in certain multi-threaded scenarios.

Memory bandwidth also favors the AMD chip. The Ryzen 5 3400G supports dual-channel DDR4 with 46.9 GB/s of bandwidth, compared to the i3-10105T's 42.7 GB/s. Both support DDR4 and neither supports ECC. PCIe connectivity is Gen 3 on both, but the Intel part lists "16 Lanes (CPU only)" while the AMD part simply lists "Gen 3". Both chips include integrated graphics: the Ryzen 5 3400G packs Radeon RX Vega 11, while the i3-10105T has UHD Graphics 630. The Ryzen 5 3400G has an unlocked multiplier, while the i3-10105T is locked.

FAQ

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 5 3400G boosts to 4.20 GHz, while the Intel Core i3-10105T boosts to 3.90 GHz.

Q: Are these processors comparable in overall performance?

A: Yes. The average benchmark score for the Ryzen 5 3400G is 2059, and for the i3-10105T it is 2058, a difference of only 0.1%. Both sit at the 46th percentile of all CPUs.

Q: Which chip wins in Geekbench single-core?

A: The Intel Core i3-10105T wins with a score of 1265 against the AMD Ryzen 5 3400G's 1101, a 13% advantage for Intel.

Q: What is the TDP difference between the two?

A: The AMD Ryzen 5 3400G has a 65 W TDP, while the Intel Core i3-10105T is rated at 35 W.

Q: Which processor has more L3 cache?

A: The Intel Core i3-10105T has 6 MB of shared L3 cache, while the AMD Ryzen 5 3400G has 4 MB of shared L3.

Q: Do both support DDR4 memory?

A: Yes, both support dual-channel DDR4. The AMD chip has 46.9 GB/s bandwidth, and the Intel chip has 42.7 GB/s.

Specification Differences

The core and thread counts are identical: both have 4 cores and 8 threads. Base and boost clocks differ, with the Ryzen 5 3400G running at 3.70 GHz base and 4.20 GHz boost, while the i3-10105T runs at 3.00 GHz base and 3.90 GHz boost. TDP is a major differentiator: 65 W for AMD versus 35 W for Intel. The sockets are incompatible: AMD Socket AM4 versus Intel Socket 1200.

Process node and foundry differ: 12 nm GlobalFoundries for AMD versus 14 nm Intel for Intel. The AMD chip has a 210 mm² die with 4,940 million transistors; Intel's die size and transistor count are not listed. Cache layouts differ: AMD has 96 KB L1 and 512 KB L2 per core with 4 MB shared L3; Intel has 64 KB L1 and 256 KB L2 per core with 6 MB shared L3.

Memory bandwidth favors AMD at 46.9 GB/s versus Intel's 42.7 GB/s. Integrated graphics differ: Radeon RX Vega 11 on AMD versus UHD Graphics 630 on Intel. The Ryzen 5 3400G has an unlocked multiplier; the i3-10105T is locked. The AMD chip launched on 2019-07-06 with a launch MSRP of $149, while the Intel chip launched on 2021-03-15 with a launch MSRP of $134. The AMD part numbers are YD3400C5M4MFH and YD3400C5FHBOX; the Intel part number is SRH3R.

Where Each One Wins

The AMD Ryzen 5 3400G is the clear winner for multi-threaded rendering and CPU-bound creative workloads. Its 17.7% to 18.1% advantage across all three Cinebench versions (R15, R20, R23) in both single and multicore tests makes it the superior choice for video encoding, 3D rendering, or any task that scales with sustained CPU throughput. The 2.2% Geekbench multicore win reinforces this, even if the margin is smaller. The 46.9 GB/s memory bandwidth and larger per-core L1/L2 caches likely contribute to this sustained performance advantage.

The Intel Core i3-10105T wins in Geekbench single-core by 13%, indicating stronger performance in lightly threaded applications like web browsing, office productivity, or legacy software that relies on a single fast core. Its 3.90 GHz boost clock is lower than the AMD's 4.20 GHz, yet it still outperforms in this specific test, pointing to higher IPC in certain instruction paths. The 35 W TDP also makes it the more power-efficient option for compact builds or systems with limited cooling, though the data does not include thermals or power draw under load.

For gaming, the data is not directly conclusive, but the integrated graphics differ: the Ryzen 5 3400G has Radeon RX Vega 11, while the i3-10105T has UHD Graphics 630. The benchmark data does not include gaming-specific tests, so the practical impact of this difference cannot be quantified from the FACT PACK.

The Verdict

The data supports a clear split based on use case. The AMD Ryzen 5 3400G is the pick for anyone running Cinebench-style workloads: rendering, simulation, or any multi-threaded creative task. Its consistent 17.7% to 18.1% lead across all Cinebench tests is too large to ignore, and the 2.2% Geekbench multicore win confirms it is not a fluke of a single benchmark. The unlocked multiplier adds flexibility for overclocking, and the larger memory bandwidth is a tangible advantage for memory-sensitive applications.

The Intel Core i3-10105T is the better choice for single-threaded performance and power efficiency. Its 13% Geekbench single-core victory signals stronger responsiveness in everyday tasks and single-threaded applications. The 35 W TDP versus 65 W makes it substantially easier to cool in small form factor builds, and the larger 6 MB L3 cache may help in certain latency-sensitive workloads. The lower launch MSRP of $134 versus $149 is a minor consideration, but the real value is in the lower power envelope.

Both chips are statistically tied overall, with a 0.1% average score difference and identical 46th percentile rankings. Choosing between them is not about raw capability — they are equals in that regard. It is about matching the silicon to the workload. For rendering, choose the Ryzen 5 3400G. For single-threaded responsiveness and low power draw, choose the Intel Core i3-10105T. There is no wrong answer in the data; there is only the right answer for your specific tasks.