AMD Ryzen 9 8945HX vs Intel Core i9-14900KF Comparison

The Intel Core i9-14900KF and AMD Ryzen 9 8945HX occupy very different positions in the processor landscape, one a desktop flagship and the other a mobile powerhouse. The benchmark data in the database shows a clear overall winner in raw performance: the Intel Core i9-14900KF took 15 of the 17 head-to-head benchmark comparisons, with the AMD Ryzen 9 8945HX securing only 2 wins. This is not a close contest in aggregate terms, though the specific workloads where AMD pulls ahead are worth examining closely.

Head-to-Head Benchmarks

The most decisive Intel victory comes in the PassMark physics test, where the i9-14900KF scored 3159 against the Ryzen 9 8945HX's 2168, a margin of 45.7%. This is the largest percentage gap in the entire comparison and indicates a substantial advantage in workloads that rely on physics simulation and rigid body calculations. Floating point math also shows a commanding Intel lead, with the i9-14900KF scoring 151918 versus 117453, a 29.3% advantage. This suggests the Intel part handles scientific computing and numerically intensive tasks with considerably more headroom.

Single-thread performance is another area where Intel is clearly ahead. The PassMark single-thread test shows 4685 for the i9-14900KF against 3907 for the Ryzen 9 8945HX, a 19.9% advantage. This pattern repeats across the Cinebench suite. In Cinebench R23 single-core, Intel scores 6969 versus 6030 for AMD, a 15.6% gap. Cinebench R20 single-core shows 2926 versus 2532, also 15.6%. Cinebench R15 single-core shows 702 versus 607, a 15.7% difference. The consistency of this roughly 15 to 20 percent single-thread advantage across multiple rendering benchmarks is notable, and it carries over into synthetic workloads like data compression, where Intel scores 785831 against 677755, a 15.9% lead.

Multi-core performance tells a similar story, though with slightly smaller margins. Cinebench R23 multi-core shows the i9-14900KF at 49370 and the Ryzen 9 8945HX at 42713, a 15.6% advantage for Intel. Cinebench R20 multi-core shows 20735 versus 17939, again a 15.6% gap. Cinebench R15 multi-core shows 4976 versus 4305, a 15.6% difference. The PassMark multithread test shows 58405 versus 51405, a 13.6% lead for Intel. Integer math also favors Intel, with 209125 versus 195180, a 7.1% margin. Random string sorting goes to Intel at 86564 versus 78781, a 9.9% advantage. Data encryption shows Intel at 46416 versus 40836, a 13.7% lead.

The AMD Ryzen 9 8945HX does have its moments. The PassMark extended instructions test goes to AMD, with 49823 versus 44839 for Intel, a 10% advantage. This indicates that AMD's implementation of extended instruction sets, likely AVX-512 related, delivers better throughput in workloads that can utilize those instructions. The other AMD win is in the PassMark find prime numbers test, where the Ryzen 9 8945HX scores 262 against Intel's 231, an 11.8% lead. This test is often sensitive to integer division and integer-heavy algorithms, and AMD's Zen 4 architecture appears to handle prime number sieving more efficiently.

The overall average benchmark score in the database places the i9-14900KF at 79371, which puts it 0.3% ahead of the Intel Core i9-14900K at 79097 and 0.3% behind the Intel Core Ultra 9 290HX Plus at 79574. The Ryzen 9 8945HX averages 76212, which is 0.1% behind the Intel Core Ultra 9 285HX at 76155 and 0.1% behind the AMD Ryzen 9 9950X3D at 75779. Both processors sit at the 95th percentile when compared against all CPUs in the database, meaning both are firmly in the top tier of available processors.

Where Each One Wins

The Intel Core i9-14900KF is the clear choice for rendering workloads, physics simulations, and general computational density. Its 45.7% advantage in PassMark physics and 29.3% lead in floating point math are the standout margins. The 15.6% lead across all three Cinebench versions, both single and multi-core, makes it the stronger option for 3D rendering and content creation pipelines. The 19.9% single-thread advantage means snappier everyday responsiveness in applications that are not well threaded, and the 15.9% lead in data compression indicates faster archiving and decompression work.

The AMD Ryzen 9 8945HX wins in extended instruction workloads and prime number calculations. The 10% lead in extended instructions suggests that if a user's software stack is built around AVX-512 or similar instruction sets, AMD will deliver better throughput. The 11.8% lead in prime number finding is a narrow but real advantage for specific mathematical workloads. Outside of those two categories, the data shows AMD trailing by margins ranging from 7.1% to 45.7%.

FAQ

Q: Which processor has the higher single-core performance?

A: The Intel Core i9-14900KF is ahead in every single-thread benchmark in the database. PassMark single-thread shows 4685 versus 3907 for the AMD Ryzen 9 8945HX, a 19.9% advantage. Cinebench R23 single-core shows a 15.6% lead, and Cinebench R15 single-core shows a 15.7% lead.

Q: Is the AMD Ryzen 9 8945HX better at any task?

A: Yes, the database shows two wins for AMD. The PassMark extended instructions test shows AMD at 49823 versus 44839 for Intel, a 10% lead. The PassMark find prime numbers test shows AMD at 262 versus 231, an 11.8% lead.

Q: How do the two compare in multi-core rendering?

A: The Intel Core i9-14900KF leads by 15.6% across all three Cinebench multi-core tests. Cinebench R23 multi-core shows 49370 versus 42713, Cinebench R20 shows 20735 versus 17939, and Cinebench R15 shows 4976 versus 4305.

Q: Which processor has the higher boost clock?

A: The Intel Core i9-14900KF has a boost clock of 6.00 GHz, while the AMD Ryzen 9 8945HX has a boost clock of 5.40 GHz.

Q: What is the thermal design power difference?

A: The Intel Core i9-14900KF has a TDP of 125 watts, while the AMD Ryzen 9 8945HX has a TDP of 55 watts. The AMD part is rated for less than half the power draw of the Intel part.

Q: Do both processors support DDR5 memory?

A: Yes, both support DDR5. The Intel Core i9-14900KF additionally supports DDR4, while the AMD Ryzen 9 8945HX supports DDR5 only. The AMD part also has a recorded memory bandwidth of 83.2 GB/s, while the Intel part has no such figure recorded in the database.

Specification Differences

The two processors differ in nearly every specification category. The Intel Core i9-14900KF has 24 cores and 32 threads, while the AMD Ryzen 9 8945HX has 16 cores and 32 threads. Both have the same thread count, but Intel achieves it with 8 additional physical cores. The base clock differs significantly, with Intel at 3.20 GHz and AMD at 2.50 GHz. The boost clock shows Intel at 6.00 GHz and AMD at 5.40 GHz.

The TDP figures are dramatically different: Intel is rated at 125 watts, AMD at 55 watts. The Intel part uses the Intel Socket 1700, while AMD uses the AMD Socket FL1. Intel's process node is listed as 10 nm, while AMD's is 5 nm. Intel's die size is 257 mm², while AMD uses two dies of 71 mm² each. The transistor count is not recorded for Intel, but AMD lists 13,140 million transistors.

Cache configurations differ substantially. Intel has 80 KB of L1 cache per core, 2 MB of L2 cache per core, and 36 MB of shared L3 cache. AMD has 64 KB of L1 per core, 1 MB of L2 per core, and 64 MB of L3 cache. AMD's total L3 is nearly double Intel's.

Memory support shows Intel supporting both DDR4 and DDR5, while AMD supports DDR5 only. Both use dual-channel memory buses. AMD records a memory bandwidth of 83.2 GB/s, while Intel has no figure recorded. ECC memory support is present on Intel but not on AMD. PCIe lanes show Intel at Gen 5 with 16 lanes, while AMD offers Gen 5 with 28 lanes. The Intel part has no integrated graphics, while AMD includes Radeon 610M graphics. Intel's market segment is desktop, AMD's is mobile. Intel has a launch MSRP of $564, while AMD has no launch MSRP recorded. Both have unlocked multipliers.

Architecture Differences

The Intel Core i9-14900KF is built on Raptor Lake architecture, specifically the Raptor Lake-R codename, and belongs to the Core 14th Gen series. It is manufactured by Intel on its own 10 nm process. The AMD Ryzen 9 8945HX uses Zen 4 architecture with the Dragon Range codename, part of the 8000 series, and is manufactured by TSMC on a 5 nm process. The process node difference is notable, with AMD using a more advanced lithography.

The core configurations reflect different design philosophies. Intel uses 24 cores with a hybrid structure that combines performance and efficiency cores, though the database does not specify the breakdown. AMD uses 16 full-size Zen 4 cores. Both support 32 threads. The cache hierarchy shows Intel favoring larger per-core L1 and L2 allocations, while AMD offers a much larger L3 pool at 64 MB versus Intel's 36 MB.

AMD includes integrated Radeon 610M graphics, making the Ryzen 9 8945HX a complete package for mobile systems where a discrete GPU may not always be present. Intel's i9-14900KF has no integrated graphics, requiring a separate graphics card. AMD also offers more PCIe lanes at 28 versus Intel's 16, both at Gen 5 speeds, which can matter for systems with multiple high-bandwidth devices.

The production status for both is listed as active. Intel's release date is recorded as October 2023, while AMD's is April 2025. The Intel part number is SRN49, and the AMD part number is 100-000001848.

The Verdict

The data points to a straightforward conclusion for most use cases: the Intel Core i9-14900KF is the faster processor in the vast majority of benchmarks. It wins in all three Cinebench versions, both single and multi-core, with consistent 15.6% margins. It wins in physics simulation by 45.7%, in floating point math by 29.3%, in single-thread performance by 19.9%, in data compression by 15.9%, in data encryption by 13.7%, in multithread performance by 13.6%, in random string sorting by 9.9%, and in integer math by 7.1%. For rendering, physics, compression, encryption, and general productivity, the Intel part is the stronger choice.

The AMD Ryzen 9 8945HX wins in extended instructions by 10% and in prime number finding by 11.8%. These are real advantages, but they apply to a narrower set of workloads. The AMD part also carries a much lower TDP of 55 watts versus 125 watts, which is a critical consideration for mobile platforms. The Ryzen 9 8945HX belongs in a laptop, and its 55 watt rating makes it feasible for high-performance mobile systems. The Intel part is a desktop processor with a 125 watt TDP and no integrated graphics.

Users who need maximum rendering performance, physics computation, or single-thread responsiveness should choose the Intel Core i9-14900KF. Users who require a high-core-count mobile processor with integrated graphics, lower power draw, and a 64 MB L3 cache should choose the AMD Ryzen 9 8945HX. The benchmark data does not show the AMD part closing the gap in general compute, but its extended instruction advantage and power efficiency give it a distinct role in the mobile segment. Both processors sit at the 95th percentile against all CPUs, so either will deliver top-tier performance in its respective platform.