AMD Ryzen 9 3900XT vs Intel Core i7-13650HX Comparison

Head-to-Head Benchmarks

The benchmark record splits this comparison into two distinct personalities. The AMD Ryzen 9 3900XT and Intel Core i7-13650HX trade wins across 23 recorded tests, with AMD taking 13 and Intel taking 10, but the margins tell a sharper story than the final tally.

Intel's strongest territory is low-thread-count and single-thread performance. In 3DMark single-thread, the Core i7-13650HX scores 1015 against AMD's 735, a 27.6% advantage. The 2-thread test shows a similar 27% gap (1988 vs 1452), and the 4-thread test lands at 24.4% ahead (3698 vs 2796). Even the 8-thread test favors Intel by 11.4% (5871 vs 5200). The 16-thread test narrows to 6.5% (8060 vs 7537), and max-thread shrinks further to 2.6% (8741 vs 8515). PassMark single-thread confirms the pattern: Intel posts 3769 versus AMD's 2742, a 27.2% lead.

AMD's counterattack is most visible in Cinebench and specialized PassMark workloads. In Cinebench R23 multi-core, the Ryzen 9 3900XT scores 27688 against Intel's 24580, a 12.6% win. The R20 multi-core test shows 11628 versus 10731, an 8.4% margin, and R15 multi-core repeats the 12.6% gap (2790 vs 2477). Single-core Cinebench also favors AMD, though by smaller margins: R23 single-core is 3909 vs 3470 (12.7%), R20 single-core is 1641 vs 1514 (8.4%), and R15 single-core is 393 vs 349 (12.6%).

The largest single-test delta in the entire comparison belongs to AMD in PassMark find prime numbers: 214 versus 103, a 107.8% advantage. That workload appears to heavily reward AMD's thread count and cache layout. AMD also dominates PassMark data encryption with a 32.3% lead (28634 vs 21649), extended instructions at 23.5% (28586 vs 23146), data compression at 17.8% (452328 vs 383943), and random string sorting at 17.4% (48327 vs 41162). PassMark multi-thread goes to AMD by 6.1% (32575 vs 30704), and physics by a narrow 1.8% (1776 vs 1745).

Intel fights back in floating-point math, where it scores 75643 against AMD's 58513, a 22.6% advantage. Integer math is closer: Intel wins 102929 to 99722, a 3.1% margin. These two results suggest Intel's FP throughput is a genuine strength, even as AMD's broader multi-threaded suite wins more often.

The overall average benchmark scores place them nearly level: AMD sits at 33736, Intel at 33089. AMD's percentile rank is 84 versus Intel's 83. In the nearest-rival table, AMD's closest competitor is the AMD Ryzen 5 7645HX at 33668 (0.2% delta), while Intel's nearest is the AMD Ryzen 7 8700G at 33089 (0% delta). The data shows two chips that trade blows depending on the workload, with neither holding a commanding aggregate lead.

The Verdict

From the recorded data, the AMD Ryzen 9 3900XT is the pick for multi-threaded productivity and security-related workloads. It wins Cinebench multi-core across all three versions, leads PassMark multi-thread, and crushes Intel in data encryption, compression, string sorting, and prime-number finding. For users running render farms, compression pipelines, or encryption-heavy tasks, the 12.6% Cinebench R23 margin and the 32.3% encryption lead are decisive.

The Intel Core i7-13650HX is the pick for single-thread responsiveness and floating-point math. Its 27.2% PassMark single-thread lead and 27.6% 3DMark single-thread lead indicate snappier everyday application behavior and stronger gaming-relevant single-core performance. The 22.6% floating-point math advantage further points to scientific or simulation workloads that rely on FP throughput.

For mixed usage, the aggregate scores are too close to call on averages alone. The 84th versus 83rd percentile ranking and the 33736 versus 33089 average score mean neither chip dominates the other in overall terms. The choice should be workload-specific: AMD for heavily threaded compute, Intel for latency-sensitive single-thread and FP-heavy tasks.

Architecture Differences

The AMD Ryzen 9 3900XT is a desktop part built on TSMC's 7 nm process with the Zen 2 architecture, codenamed Matisse 2. It ships in the 3000 series with 12 cores and 24 threads, base clock of 3.90 GHz, boost clock of 4.70 GHz, and a 105 W TDP. The package uses AMD Socket AM4 and contains 7,600 million transistors across a 2x 74 mm² die configuration. Cache is split per core at 64 KB L1 and 512 KB L2, with a large 64 MB L3 pool shared across the chip. Memory support is DDR4 over a dual-channel bus with 51.2 GB/s bandwidth, and ECC is not supported. PCIe is Gen 4 with 24 CPU lanes. There is no integrated graphics. The multiplier is unlocked, and the launch MSRP was $499. It was released on 2020-07-06 and remains in active production.

The Intel Core i7-13650HX is a mobile part built on Intel's 10 nm process with the Raptor Lake architecture, codenamed Raptor Lake-HX. It belongs to the Core 13th Gen series with 14 cores and 20 threads, base clock of 2.60 GHz, boost clock of 4.90 GHz, and a 55 W TDP. The socket is Intel BGA 1964, and the die size is 257 mm². Cache is per core at 80 KB L1 and 2 MB L2, with a smaller 24 MB shared L3. Memory support includes both DDR4 and DDR5 over a dual-channel bus; bandwidth is not recorded in the database. ECC memory is supported. PCIe is Gen 5 with 20 CPU lanes. Integrated graphics are present as UHD Graphics 710. The multiplier is unlocked, and the launch MSRP was $485. It was released on 2023-01-03 and remains active.

The architectural gap is stark: AMD uses a 7 nm process with a massive 64 MB L3 cache and 24 threads, while Intel uses a 10 nm process with 14 cores (fewer threads at 20), a smaller 24 MB L3, but a higher boost clock of 4.90 GHz versus 4.70 GHz. AMD's dual-die design with 7,600 million transistors contrasts with Intel's monolithic 257 mm² die. Intel also brings Gen 5 PCIe and integrated graphics, both absent from the AMD part. The TDP difference (105 W vs 55 W) reflects their intended segments: desktop versus mobile.

FAQ

Q: Which CPU has more cores and threads?

A: The AMD Ryzen 9 3900XT has 12 cores and 24 threads. The Intel Core i7-13650HX has 14 cores but only 20 threads, due to its hybrid core arrangement.

Q: Which CPU wins in single-threaded performance?

A: The Intel Core i7-13650HX wins decisively. It leads by 27.6% in 3DMark single-thread (1015 vs 735) and by 27.2% in PassMark single-thread (3769 vs 2742).

Q: Which CPU is better for Cinebench multi-core rendering?

A: The AMD Ryzen 9 3900XT wins all three Cinebench multi-core tests: R15 by 12.6% (2790 vs 2477), R20 by 8.4% (11628 vs 10731), and R23 by 12.6% (27688 vs 24580).

Q: Does the Intel chip have integrated graphics?

A: Yes, the Intel Core i7-13650HX includes UHD Graphics 710. The AMD Ryzen 9 3900XT has no integrated graphics.

Q: What are the memory support differences?

A: The AMD chip supports DDR4 only with 51.2 GB/s bandwidth. The Intel chip supports both DDR4 and DDR5, though its bandwidth is not recorded.

Q: Which chip has the higher boost clock?

A: The Intel Core i7-13650HX boosts to 4.90 GHz, higher than the AMD Ryzen 9 3900XT's 4.70 GHz.

Where Each One Wins

The AMD Ryzen 9 3900XT wins in multi-threaded compute and data-heavy workloads. Cinebench multi-core across R15, R20, and R23 all go to AMD by margins between 8.4% and 12.6%. PassMark multi-thread, data compression, data encryption, extended instructions, find prime numbers, random string sorting, and physics all favor AMD. The encryption and prime-number results are particularly lopsided, with leads of 32.3% and 107.8% respectively. This makes AMD the stronger choice for rendering, compression, cryptography, and any workload that scales with thread count and large L3 cache.

The Intel Core i7-13650HX wins in single-thread and floating-point-heavy scenarios. It dominates 3DMark tests at 2, 4, 8, 16, and max threads, with the largest edges at low thread counts (27% at 2-thread, 24.4% at 4-thread). PassMark single-thread and floating-point math both go to Intel, with the FP lead at 22.6%. Integer math is a narrow Intel win at 3.1%. This makes Intel the better fit for gaming-style workloads, latency-sensitive applications, and scientific computations that rely on FP throughput.

The overall scoreboard shows AMD with 13 wins and Intel with 10, but the margin distribution matters. AMD's wins are often large (17.8%, 23.5%, 32.3%, 107.8%), while Intel's biggest wins are concentrated in single-thread tests (27.2%, 27.6%). For users who need one chip to do everything, the aggregate average scores (33736 vs 33089) are within 2%, meaning neither chip will disappoint in general use. The decision comes down to whether the workload is thread-scaled (pick AMD) or single-thread and FP-bound (pick Intel).