AMD Ryzen 7 3800X vs Intel Core i9-13900H Comparison

The AMD Ryzen 7 3800X and the Intel Core i9-13900H occupy an unusual intersection in the database: a desktop Zen 2 processor and a mobile Raptor Lake-H processor that land within a fraction of a percent of each other in aggregate performance. The 3800X carries an average benchmark score of 29447 against 28886 for the i9-13900H, a gap of roughly 2 percent, and both sit in the 81st percentile versus all CPUs in the database. The head-to-head record, however, is lopsided: Intel wins 13 of the 17 shared tests, while AMD takes 4. The mix of wins tells a clearer story than the raw tally, because AMD's victories cluster in the newest and most single-thread-sensitive tests, while Intel's come from throughput-oriented workloads. What follows is a step-by-step walk through the recorded data.

Head-to-Head Benchmarks

Starting with the Cinebench family, the picture shifts dramatically by render generation. In Cinebench R15 multi-core, the i9-13900H scores 2666.5 against 1974 for the 3800X, a 26 percent win for Intel, and it edges the R15 single-core test 279 to 278, effectively a tie at 0.4 percent. Cinebench R20 goes the same way: Intel wins multi-core 9676 to 8226 (15 percent) and single-core 1365 to 1161 (14.9 percent). Then the trend reverses in R23. The 3800X takes multi-core 19588 to 17471, a 12.1 percent win, and single-core 2765 to 1964.5, a commanding 40.7 percent lead. That single-core result is the largest delta in the entire head-to-head set and the single most important number for any latency-sensitive workload comparison between these two parts.

The Passmark suite broadly favors Intel. Passmark multi-thread goes to the i9-13900H, 27673 to 23046 (16.7 percent), and Passmark single-thread goes the same way, 3754 to 2712 (27.8 percent). The arithmetic-heavy tests show Intel's largest raw-number advantages: floating point math 69611 to 39759, a 42.9 percent win, and integer math 97159 to 67725, a 30.3 percent win. Physics lands at 1745 versus 1226, a 29.7 percent Intel win. Data compression goes to Intel at 326425 versus 304853 (6.6 percent), random string sorting at 35637 versus 32869 (7.8 percent), and find prime numbers by the narrowest margin in the set, 104 to 103 (1 percent).

AMD's Passmark wins are narrower but real. Data encryption goes to the 3800X, 19337 to 18974 (1.9 percent), and extended instructions also favor AMD, 20037 to 19330 (3.7 percent). Combined with the two R23 wins, AMD's four victories span encryption, extended instruction throughput, and the most modern Cinebench generation, both single- and multi-threaded. The database also holds 3DMark CPU scaling data for the i9-13900H only, from 1078 in the single-thread test up to 7670 at maximum threads, with 2002 at two threads, 3591 at four, 5395 at eight, and 7063 at sixteen, so no direct comparison is possible there.

Context from each part's rival cluster reinforces how closely matched they are. The 3800X's average score sits within 0.1 percent of the AMD Ryzen AI 7 345 (29461) and the AMD EPYC 9654 (29409), and within 0.7 percent of the Intel Core i5-13500HX (29270) and Intel Xeon Phi 7210 (29245). The i9-13900H is essentially dead even with the Intel Core i5-12600H (28882, 0 percent delta), the AMD Ryzen 5 5600XT (28940, -0.2 percent), the Intel Core i7-12650H (28815, 0.2 percent), and the Intel Core Ultra 5 135H (29093, -0.7 percent).

Architecture Differences

These are two fundamentally different designs separated by roughly three and a half years of release timing. The Ryzen 7 3800X is a Zen 2 (Matisse) desktop chip on AMD Socket AM4, built on TSMC's 7 nm process, with 8 cores and 16 threads, a 3.90 GHz base clock, a 4.50 GHz boost clock, and a 105 W TDP. Its die measures 74 mm² and packs 3,800 million transistors. Cache is generous at the last level: 32 MB of L3, alongside 64 KB of L1 and 512 KB of L2 per core. It supports DDR4 on a dual-channel bus with 51.2 GB/s of memory bandwidth, exposes PCIe Gen 4 with 24 CPU lanes, has no integrated graphics, and ships with an unlocked multiplier. Its launch MSRP was $399.

The Core i9-13900H is a Raptor Lake-H mobile processor on Intel BGA 1744, built on Intel's 10 nm process with a 257 mm² die (transistor count not recorded). It pairs 14 cores with 20 threads, a 2.60 GHz base clock, a 5.40 GHz boost clock, and a 45 W TDP. Per-core L1 is 80 KB and per-core L2 is 2 MB, with 24 MB of shared L3. Memory support spans both DDR4 and DDR5 on a dual-channel bus (bandwidth not recorded), PCIe is Gen 5 but with only 8 CPU lanes, and integrated graphics are present in the form of Iris Xe Graphics 96EU. The multiplier is locked. Its launch MSRP was $617.

The structural contrast is stark. Intel leans on more cores, more threads, and a much higher boost clock within a far lower TDP; AMD leans on a denser process node, more L3 cache, more PCIe lanes, and an unlocked multiplier for desktop tuning. Neither supports ECC memory.

The Verdict

The data supports a split decision. If the workload is single-threaded and measured by the newest test in the shared set, the 3800X is the stronger part: 40.7 percent ahead in Cinebench R23 single-core and 12.1 percent ahead in R23 multi-core, plus small wins in encryption and extended instructions. If the workload is threaded arithmetic, physics simulation, compression, or measured by older test generations, the i9-13900H dominates: 42.9 percent ahead in floating point, 30.3 percent in integer math, 29.7 percent in physics, 27.8 percent in Passmark single-thread, and 26 percent in R15 multi-core.

Platform needs decide the rest. The 3800X fits a desktop AM4 build with 24 PCIe Gen 4 lanes, 32 MB of L3, and an unlocked multiplier, but requires discrete graphics since it has none. The i9-13900H is a soldered mobile part with locked multipliers, 8 PCIe Gen 5 lanes, and integrated Iris Xe graphics, making it self-sufficient for display output inside a laptop chassis. Neither the aggregate scores (29447 versus 28886) nor the percentile placement (both at 81) separate them meaningfully, so the choice reduces to which benchmark profile matches the intended use and which platform form factor applies.

Specification Differences

The fields where these two differ, per the database:

• Market segment and socket: Desktop on AMD Socket AM4 versus Mobile on Intel BGA 1744.
• Architecture and codename: Zen 2 (Matisse) versus Raptor Lake (Raptor Lake-H).
• Process node and foundry: TSMC 7 nm versus Intel 10 nm.
• Cores and threads: 8/16 versus 14/20.
• Clocks: 3.90 GHz base and 4.50 GHz boost versus 2.60 GHz base and 5.40 GHz boost.
• TDP: 105 W versus 45 W.
• Die size and transistors: 74 mm² with 3,800 million transistors versus 257 mm² with no transistor figure recorded.
• Cache: 64 KB L1 and 512 KB L2 per core with 32 MB L3 versus 80 KB L1 and 2 MB L2 per core with 24 MB shared L3.
• Memory: DDR4 only versus DDR4 and DDR5; bandwidth recorded only for AMD at 51.2 GB/s; both dual-channel, both without ECC.
• PCIe: Gen 4 with 24 CPU lanes versus Gen 5 with 8 CPU lanes.
• Integrated graphics: none versus Iris Xe Graphics 96EU.
• Multiplier: unlocked versus locked.
• Release date and MSRP: released 2019 with a $399 launch MSRP versus released 2023 with a $617 launch MSRP.

FAQ

Q: Which CPU is faster overall?

A: Neither wins decisively. The 3800X has the higher average benchmark score (29447 versus 28886), but the i9-13900H wins 13 of 17 head-to-head tests. Both sit in the 81st percentile versus all CPUs.

Q: Which is better for single-threaded work?

A: It depends on the test. The 3800X leads Cinebench R23 single-core by 40.7 percent (2765 versus 1964.5), while the i9-13900H leads Passmark single-thread by 27.8 percent (3754 versus 2712) and R20 single-core by 14.9 percent. R15 single-core is a statistical tie, 279 to 278.

Q: Which wins in multi-core rendering?

A: Split by generation. The i9-13900H wins R15 multi-core by 26 percent and R20 multi-core by 15 percent; the 3800X wins R23 multi-core by 12.1 percent.

Q: Does either CPU have integrated graphics?

A: Only the i9-13900H, with Iris Xe Graphics 96EU. The 3800X has none and requires a discrete graphics card.

Q: Can either be overclocked?

A: Only the 3800X, which has an unlocked multiplier. The i9-13900H's multiplier is locked.

Q: What memory does each support?

A: The 3800X supports DDR4 only, with 51.2 GB/s of recorded bandwidth on a dual-channel bus. The i9-13900H supports both DDR4 and DDR5, also dual-channel, with no bandwidth figure recorded.

Where Each One Wins

Choose the Ryzen 7 3800X when the workload mirrors its four wins: modern rendering engines as represented by Cinebench R23 (12.1 percent multi-core, 40.7 percent single-core), encryption tasks (1.9 percent), and extended instruction workloads (3.7 percent). It is also the pick when the platform requires 24 PCIe Gen 4 lanes, 32 MB of L3 cache, an unlocked multiplier, or simply a socketed desktop AM4 build rather than a soldered mobile chip.

Choose the Core i9-13900H when the workload leans on threaded compute and legacy-tested throughput: floating point math (42.9 percent ahead), integer math (30.3 percent), physics (29.7 percent), Passmark single-thread (27.8 percent), R15 multi-core (26 percent), Passmark multi-thread (16.7 percent), R20 multi-core (15 percent), data compression (6.6 percent), and string sorting (7.8 percent). It is the only option of the two with integrated graphics, DDR5 support, and PCIe Gen 5, and it delivers its performance within a 45 W TDP against the 3800X's 105 W. In short, the 3800X is the modern-single-thread and platform-flexibility choice; the i9-13900H is the throughput and efficiency choice, provided a BGA mobile form factor fits the build.