AMD Ryzen 9 5900X vs Intel Core i7-14650HX Comparison

The Verdict

The data splits this comparison cleanly by scenario. The Intel Core i7-14650HX wins 10 of 17 head-to-head benchmarks, while the AMD Ryzen 9 5900X wins 7. The Intel part’s average benchmark score of 41576 sits 0.5% above the AMD’s 41376, a margin so thin it falls within the noise of adjacent rivals like the Intel Core Ultra 7 265H (41621, -0.1% from Intel) and the Intel Core 7 251TE (41650, -0.2%). Both processors rank in the same percentile tier — Intel at 88, AMD at 87 — meaning neither is a class above the other in aggregate performance.

For a user prioritizing single-core responsiveness, Cinebench rendering, or floating-point workloads, the Intel Core i7-14650HX is the clear pick. It leads by 28.9% in Cinebench R23 single-core, 25.8% in R23 multi-core, and 10.7% in PassMark single-thread. For a user prioritizing data compression, encryption, integer math, or prime-number finding, the AMD Ryzen 9 5900X wins decisively — 20.3% ahead in data compression, 26.3% in encryption, 17.2% in integer math, and 40.9% in prime numbers.

The platform context matters. The Intel chip is a mobile part (Intel BGA 1964 socket, 55W TDP) while the AMD is a desktop part (Socket AM4, 105W TDP). If the workload fits a laptop chassis, only the Intel qualifies. If a desktop build is the target, the AMD’s 105W TDP and 64MB L3 cache give it a different physical profile. The verdict is not "which is faster" but "which fits the use case": Intel for mixed rendering and single-thread speed on mobile, AMD for data-heavy integer and encryption tasks on desktop.

Architecture Differences

The two chips come from fundamentally different design schools. Intel’s Core i7-14650HX uses Raptor Lake architecture on a 10nm process node fabricated by Intel itself, with a die size of 257 mm². AMD’s Ryzen 9 5900X uses Zen 3 architecture on a 7nm node from TSMC, with a dual-die layout of 2x 74 mm² and 8,300 million transistors. The process node gap alone explains part of the efficiency and clock behavior differences.

Core counts diverge: Intel provides 16 cores and 24 threads, while AMD provides 12 cores and 24 threads. Both support simultaneous multithreading, but Intel’s extra four physical cores come with a different cache hierarchy. Intel’s L1 cache is 80 KB per core, L2 is 2 MB per core, and L3 is 30 MB shared. AMD’s L1 is 64 KB per core, L2 is 512 KB per core, and L3 is 64 MB shared. The AMD’s L3 is more than double Intel’s, which directly explains its strength in data compression and encryption workloads that benefit from larger resident datasets.

Clock speeds also differ. Intel lists a base clock of 2.20 GHz and boost of 5.20 GHz. AMD lists a base of 3.70 GHz and boost of 4.80 GHz. Intel’s higher boost clock aligns with its single-core Cinebench wins. AMD’s higher base clock suggests more consistent sustained performance at lower thread counts, though the benchmark data does not isolate that effect directly.

Memory support splits by era. Intel supports both DDR4 and DDR5, dual-channel. AMD supports only DDR4, dual-channel, with a memory bandwidth of 51.2 GB/s. Both support ECC memory. PCIe generations differ: Intel offers Gen 5 with 16 lanes (CPU only), while AMD offers Gen 4. Intel includes integrated graphics (UHD Graphics 710); AMD has none. Both have unlocked multipliers. Intel’s release date is January 2024; AMD’s is November 2020.

Where Each One Wins

The Intel Core i7-14650HX wins every Cinebench test in the head-to-head set. In Cinebench R15 multi-core, it scores 3470.5 versus AMD’s 2695, a 28.8% margin. In R15 single-core, 285.5 versus 250, a 14.2% margin. In R23 multi-core, 20454 versus 16262, a 25.8% margin. In R23 single-core, 1969 versus 1527, a 28.9% margin. These are not narrow victories; they are dominant across the entire Cinebench suite, indicating a substantial advantage in both short and long rendering workloads.

Intel also wins Geekbench by smaller margins: 14249 versus 14118 multi-core (0.9%) and 2173 versus 2083 single-core (4.3%). PassMark single-thread goes to Intel at 3841 versus 3469, a 10.7% lead. PassMark floating-point math goes to Intel at 84999 versus 77700, a 9.4% lead. PassMark physics also favors Intel: 2202 versus 1994, a 10.4% lead.

The AMD Ryzen 9 5900X wins every PassMark workload except floating-point, physics, and single-thread. Its biggest win is PassMark find prime numbers: 257 versus 152, a 40.9% margin. Data encryption shows 31106 versus 22917, a 26.3% margin. Extended instructions go to AMD at 33119 versus 24150, a 27.1% margin. Data compression favors AMD at 499968 versus 398418, a 20.3% margin. Integer math goes to AMD at 140851 versus 116661, a 17.2% margin. Random string sorting goes to AMD at 51646 versus 43035, a 16.7% margin. PassMark multi-thread also favors AMD at 39002 versus 33495, a 14.1% margin.

The pattern is consistent: Intel wins rendering and general-purpose single-core tasks; AMD wins data manipulation and integer-heavy workloads. The 3DMark tests appear only on AMD’s benchmark list (e.g., 16-thread at 9075, max-thread at 10075), so no direct comparison is available from the head-to-head set.

FAQ

Q: Which CPU has a higher single-core Cinebench R23 score?

A: The Intel Core i7-14650HX scores 1969, which is 28.9% higher than the AMD Ryzen 9 5900X’s 1527.

Q: Which CPU wins in PassMark data compression?

A: The AMD Ryzen 9 5900X scores 499968 versus Intel’s 398418, a 20.3% advantage for AMD.

Q: Do both CPUs support ECC memory?

A: Yes, both the Intel Core i7-14650HX and the AMD Ryzen 9 5900X list ECC memory support as true.

Q: What is the core and thread count difference?

A: Intel has 16 cores and 24 threads; AMD has 12 cores and 24 threads. Both have the same thread count, but Intel has four more physical cores.

Q: Which CPU has a larger L3 cache?

A: The AMD Ryzen 9 5900X has 64 MB of shared L3 cache, while the Intel Core i7-14650HX has 30 MB shared.

Q: What is the average benchmark score difference?

A: Intel’s average benchmark score is 41576, which is 0.5% higher than AMD’s 41376.

Head-to-Head Benchmarks

The largest Intel victory comes in Cinebench R23 single-core, where the 1969 score beats AMD’s 1527 by 28.9%. That same test family shows Intel’s consistency: R15 multi-core gives a 28.8% lead, R23 multi-core gives 25.8%, and R15 single-core gives 14.2%. The Geekbench multi-core margin is the smallest of Intel’s wins at 0.9% (14249 versus 14118), suggesting that the two chips are nearly identical in that specific mixed workload.

The largest AMD victory is PassMark find prime numbers, where its 257 score crushes Intel’s 152 by 40.9%. This is the single biggest delta in either direction across all 17 head-to-head tests. AMD’s extended instructions win is also large at 27.1% (33119 versus 24150), followed by data encryption at 26.3% (31106 versus 22917). Data compression gives AMD a 20.3% advantage (499968 versus 398418).

Integer math shows AMD ahead by 17.2% (140851 versus 116661), while random string sorting gives AMD a 16.7% lead (51646 versus 43035). PassMark multi-thread favors AMD by 14.1% (39002 versus 33495), despite Intel winning the Cinebench multi-core tests by over 25%. This divergence suggests that the two benchmarks stress different aspects of multi-threaded performance — Cinebench scaling better with Intel’s core count, while PassMark multi-thread rewards AMD’s cache and integer throughput.

Intel’s wins in PassMark floating-point math (9.4%), physics (10.4%), and single-thread (10.7%) round out its portfolio. The total win count is 10 for Intel and 7 for AMD, but the average scores remain within 0.5% of each other. The head-to-head data does not support a blanket "winner" — it supports a workload-dependent split.

Specification Differences

The two processors differ in nearly every physical and platform specification. Intel uses a 10nm process node from Intel’s own foundry; AMD uses a 7nm node from TSMC. Intel’s die is 257 mm²; AMD’s is dual-die at 2x 74 mm². AMD lists 8,300 million transistors; Intel’s transistor count is not provided.

Core count: Intel 16, AMD 12. Threads are equal at 24. Base clocks differ: Intel 2.20 GHz, AMD 3.70 GHz. Boost clocks differ: Intel 5.20 GHz, AMD 4.80 GHz. TDP: Intel 55W, AMD 105W. Sockets: Intel BGA 1964 versus AMD Socket AM4. Market segments: Intel mobile, AMD desktop.

Cache hierarchy diverges sharply. Intel L1 is 80 KB per core, L2 is 2 MB per core, L3 is 30 MB shared. AMD L1 is 64 KB per core, L2 is 512 KB per core, L3 is 64 MB. Memory support: Intel DDR4 and DDR5, AMD DDR4 only. Both are dual-channel. AMD specifies memory bandwidth at 51.2 GB/s; Intel does not list a bandwidth figure. ECC: true for both.

PCIe: Intel Gen 5 with 16 lanes (CPU only); AMD Gen 4. Integrated graphics: Intel UHD Graphics 710; AMD has none. Release dates: Intel January 2024, AMD November 2020. AMD has a launch MSRP of $549; Intel has no listed launch MSRP. Both have unlocked multipliers. Part numbers: Intel SRMXH, AMD 100-000000061. Production status: both active.