AMD Ryzen 9 3900X vs Intel Core 9 270H Comparison

The Intel Core 9 270H and AMD Ryzen 9 3900X are separated by a razor-thin 0.1% in average benchmark score, with the Intel part scoring 42,816 against AMD’s 42,772. Both processors sit in the 91st percentile of all CPUs, yet their performance profiles could hardly be more different. The Ryzen 9 3900X wins 12 of the 17 head-to-head tests, while the Core 9 270H takes 5, but the margins of victory tell a more nuanced story than the win count alone.

Head-to-Head Benchmarks

The AMD Ryzen 9 3900X establishes its dominance across the Cinebench suite, winning all six tests by a consistent margin. In Cinebench R23 multi-core, the 3900X scores 27,662 against the Core 9 270H’s 26,861, a 2.9% advantage. The same 2.9% delta appears in Cinebench R20 multi-core (11,618 vs 11,281) and Cinebench R15 multi-core (2,788 vs 2,707). Single-core results follow the identical pattern: the 3900X leads by 2.8% in R15 (393 vs 382) and by 2.9% in both R20 (1,640 vs 1,592) and R23 (3,905 vs 3,792). These are narrow but consistent wins, suggesting the AMD part holds a small but real edge in rendering workloads across every version of the benchmark.

The PassMark suite reveals where the two chips diverge sharply. The 3900X delivers crushing victories in several specialized workloads. Data compression shows an 18.8% gap (448,906 vs 364,399), data encryption a 25.8% gap (28,586 vs 21,223), and extended instructions a 25.4% gap (29,221 vs 21,785). The largest single win for AMD comes in the find prime numbers test, where the 3900X scores 214 against just 115 for the Intel part — a 46.3% blowout. Random string sorting also favors AMD by 15.4% (48,300 vs 40,885), and the multithread test gives the 3900X a 2.9% edge (32,544 vs 31,602).

The Intel Core 9 270H counters with equally decisive wins in other PassMark tests. Floating point math is the standout: Intel scores 80,299 against AMD’s 58,434, a 37.4% advantage. Integer math goes to Intel by 10.6% (110,195 vs 99,628), and the physics test shows an 8.5% lead (1,946 vs 1,794). The most dramatic split of all comes in PassMark’s single-thread test, where the Core 9 270H scores 4,404 against the 3900X’s 2,703 — a 62.9% margin. That is the largest delta in either direction across the entire benchmark set.

The overall picture is one of complementary strengths. AMD wins the majority of tests, but its margins in Cinebench are modest, while Intel’s wins in floating point and single-thread performance are substantial. The 0.1% difference in average score reflects how these opposing strengths nearly cancel out.

FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Core 9 270H edges ahead with an average score of 42,816, compared to the AMD Ryzen 9 3900X’s 42,772, a difference of 0.1%.

Q: How large is the single-thread performance gap?

A: In PassMark’s single-thread test, the Intel Core 9 270H scores 4,404 against the 3900X’s 2,703, giving Intel a 62.9% advantage — the largest margin in any head-to-head test.

Q: Does the AMD processor win in any multi-core benchmark?

A: Yes, the 3900X wins all three Cinebench multi-core tests, with 2.9% leads in R15 (2,788 vs 2,707), R20 (11,618 vs 11,281), and R23 (27,662 vs 26,861).

Q: Which chip is better for integer math workloads?

A: The Intel Core 9 270H leads PassMark integer math with a score of 110,195, which is 10.6% higher than the 3900X’s 99,628.

Q: What is the biggest single-test defeat for the Intel processor?

A: The find prime numbers test, where the 3900X scores 214 versus the Core 9 270H’s 115, represents a 46.3% deficit for Intel.

Q: Are both processors in the same performance percentile?

A: Yes, both the Intel Core 9 270H and the AMD Ryzen 9 3900X rank in the 91st percentile of all CPUs.

Where Each One Wins

The AMD Ryzen 9 3900X is the pick for compression and encryption tasks. Its 18.8% lead in data compression and 25.8% lead in data encryption make it the stronger choice for archiving, database workloads, or any scenario involving large volumes of encrypted data. The 46.3% advantage in prime number finding points to a clear edge in mathematical algorithms that rely on integer factorization. Random string sorting, where AMD leads by 15.4%, suggests better performance in sorting and indexing operations. For pure multi-core rendering through Cinebench, the 3900X consistently outperforms by roughly 3% across all three benchmark versions, making it the safer choice for professional rendering pipelines.

The Intel Core 9 270H claims the floating point crown outright. A 37.4% lead in floating point math indicates superior performance in scientific computing, simulations, and 3D graphics calculations that depend heavily on FPU throughput. The 10.6% advantage in integer math covers general arithmetic workloads. Physics simulations show an 8.5% Intel edge, which could translate to better performance in physics-based game engines or engineering software. The 62.9% single-thread advantage is the defining feature: any application that cannot fully utilize many cores — legacy software, certain games, or lightly threaded productivity apps — will run dramatically faster on the Intel chip.

Specification Differences

The two processors diverge fundamentally in their core configurations. The Intel Core 9 270H packs 14 cores and 20 threads, while the AMD Ryzen 9 3900X has 12 cores and 24 threads. AMD’s higher thread count comes from simultaneous multithreading on all 12 cores, whereas Intel’s 14 cores yield only 20 threads, indicating a hybrid arrangement. Clock speeds differ substantially: the Intel part runs at 2.70 GHz base and boosts to 5.80 GHz, while the AMD chip operates at 3.80 GHz base and 4.60 GHz boost. Power envelopes are separated by a wide margin, with Intel rated at 45W TDP against AMD’s 105W TDP.

The memory ecosystems are distinct. Intel supports both DDR4 and DDR5, while AMD supports only DDR4. Both use dual-channel memory buses, but AMD specifies a memory bandwidth of 51.2 GB/s, a figure not listed for Intel. PCIe capabilities differ: Intel offers Gen 5 with 8 lanes, while AMD provides Gen 4 with 24 lanes. The Intel chip includes integrated Iris Xe Graphics with 96 execution units; the AMD part has no integrated graphics at all. Socket compatibility is entirely separate — Intel BGA 1744 for the Core 9 270H versus AMD Socket AM4 for the 3900X.

The Intel Core 9 270H carries a launch MSRP of $697. The AMD Ryzen 9 3900X has a launch MSRP of $499.

Architecture Differences

The Intel Core 9 270H is built on Raptor Lake architecture, specifically the Raptor Lake-H codename, representing a Raptor Lake Refresh generation. It uses a 10 nm process node fabricated by Intel itself. The cache hierarchy includes 80 KB of L1 per core, 2 MB of L2 per core, and 24 MB of shared L3 cache. This is a mobile processor, released on 2024-12-17, with an active production status and part number SRQ6V.

The AMD Ryzen 9 3900X employs Zen 2 architecture under the Matisse codename, fabricated on a 7 nm process by TSMC. AMD lists 7,600 million transistors across two 74 mm² dies. The cache layout differs notably: 64 KB L1 per core, 512 KB L2 per core, and a much larger 64 MB L3 cache — more than double Intel’s 24 MB. This is a desktop processor released on 2019-07-06, also active in production, with part number 100-000000023100-100000023BOX100-100000023MPK.

The Intel chip has an unlocked multiplier set to false, meaning it cannot be overclocked. The AMD chip has an unlocked multiplier set to true, allowing user overclocking. Neither processor supports ECC memory. The architectural split is clear: Intel’s newer Raptor Lake design emphasizes high clock speeds and per-core efficiency on a 10 nm node, while AMD’s older Zen 2 design leverages a larger thread count, bigger L3 cache, and a more advanced 7 nm process from TSMC.

The Verdict

Choose the AMD Ryzen 9 3900X if your workloads are dominated by multi-threaded, integer-heavy, or data-processing tasks. The data shows consistent wins in all Cinebench multi-core tests, plus large advantages in data compression, encryption, and prime number finding. The 24 threads and 64 MB L3 cache make it the better engine for heavily parallel workloads that can saturate all available cores. The unlocked multiplier also means the 3900X can be overclocked, potentially extending its performance lead further.

Choose the Intel Core 9 270H if single-threaded performance or floating point throughput is the priority. The 62.9% single-thread advantage is decisive and will be felt in everyday responsiveness, lightly threaded applications, and games that rely on one or two fast cores. The 37.4% floating point lead makes it the better choice for scientific or graphics-heavy calculations. The lower 45W TDP also suggests this chip can deliver its performance in a more power-constrained mobile environment.

The 0.1% average score difference means neither chip is definitively faster overall. For mixed workloads, the two processors will trade blows. The deciding factor is the nature of the software: AMD wins the majority of tests, but Intel wins the tests where it wins by very large margins. Users who know their primary applications fall into AMD’s winning categories should pick the 3900X; those whose software favors Intel’s strengths will see outsized benefits from the Core 9 270H.