Intel Core i9-14900KF vs Intel Core Ultra 9 285K Comparison

Intel Core Ultra 9 285K vs Intel Core i9-14900KF is a matchup between two 24-core desktop flagships from consecutive Intel generations, and the recorded data shows a clear pattern: the newer Arrow Lake chip wins the majority of head-to-head tests, while the older Raptor Lake Refresh part retains a few large single-core wins in specific Cinebench runs. The 285K takes 15 of 19 benchmark victories, holds a higher average benchmark score (83807 vs 79371), and sits in the 96th percentile of all CPUs in the database, one point above the 14900KF's 95th percentile. Both chips carry identical TDP ratings of 125W and launched at similar MSRPs, $589 for the 285K and $564 for the 14900KF, but they differ sharply in architecture, threading, and platform.

Head-to-Head Benchmarks

The 285K dominates the Passmark suite. Its most dramatic win is passmark_find_prime_numbers, where it scores 541 against 231, a 134.2% lead. Floating point math goes the same way: 224324 vs 151918, a 47.7% advantage. Extended instructions favor the 285K by 38.9% (62277 vs 44839), encryption by 24.4% (57745 vs 46416), and physics by 24.7% (3938 vs 3159). In the broader Passmark aggregate tests, the 285K wins multithread 67260 to 58405 (15.2%), single thread 5087 to 4685 (8.6%), random string sorting 94927 to 86564 (9.7%), and edges data compression 790052 vs 785831 (0.5%).

Cinebench and Geekbench split more interestingly. The 285K wins Cinebench R15 multi-core 6494 to 4976 (30.5%), R20 multi-core 24003 to 20735 (15.8%), and R20 single-core 3388 to 2926 (15.8%). But the 14900KF strikes back hard in R23: single-core 6969 vs 2377, a 65.9% win, and multi-core 49370 vs 42522, a 13.9% win. It also takes R15 single-core 702 vs 359, a 48.9% gap. Geekbench favors the newer chip in both directions: multi-core 26702 vs 23789 (12.2%) and single-core 2870 vs 2727 (5.2%). The 14900KF's only other win is passmark_integer_math, 209125 vs 172379 (17.6%).

The R23 single-core result deserves attention. A 6969 score is nearly triple the 285K's 2377, which suggests the recorded 285K result is an outlier compared to its own R20 and Geekbench single-core wins. Treat that one figure with caution when weighing single-core performance; the R20 and Geekbench single-core numbers, both won by the 285K, are more consistent with its architecture.

Architecture Differences

These are two fundamentally different designs. The 285K is Arrow Lake-S, built on TSMC's 3 nm process, with 24 cores and 24 threads: no hyperthreading. The 14900KF is Raptor Lake-R on Intel's 10 nm process, with 24 cores and 32 threads, meaning eight of its cores run with simultaneous multithreading. That thread count advantage is part of why the 14900KF can still win heavily threaded tests like Cinebench R23 multi-core.

Cache differs meaningfully. The 285K carries 192 KB of L1 per core and 3 MB of L2 per core; the 14900KF has 80 KB L1 and 2 MB L2 per core. Both share 36 MB of L3. The 285K packs 17,800 million transistors into a 243 mm² die; the 14900KF's die is slightly larger at 257 mm² with no transistor count recorded.

Clocks and threading tell opposing stories. The 14900KF boosts higher, 6.00 GHz vs 5.70 GHz, and its higher base clock of 3.20 GHz sits below the 285K's 3.70 GHz. Platform features also diverge: the 285K uses Socket 1851 with 20 CPU PCIe 5.0 lanes, DDR5 only, and a recorded memory bandwidth of 102.4 GB/s on a dual-channel bus. The 14900KF uses Socket 1700 with 16 CPU PCIe 5.0 lanes and supports both DDR4 and DDR5, with no bandwidth figure recorded. The 285K includes Arc Xe-LPG graphics with 64 EUs; the 14900KF has no integrated graphics, which is expected for an F-sku. Both support ECC memory, both have unlocked multipliers, and both remain in active production. The 285K launched October 2024; the 14900KF launched October 2023.

The Verdict

The data favors the 285K for most builders. It wins 15 of 19 head-to-head tests, posts a higher average score (83807 vs 79371), and ranks in the 96th percentile versus 95. Its nearest rivals include the Core Ultra 9 290K Plus (avgScore 84003, only 0.2% ahead of it) and AMD EPYC 4584PX (83090, 0.9% behind it), placing it in tight competition with server-class silicon. The 14900KF's rival set includes the Core i9-14900K (79097, 0.3% behind it) and Xeon w5-2565X (80671, 1.6% ahead).

Pick the 14900KF if your workload looks like its win profile: Cinebench R23 rendering in both single and multi-core, R15 single-core, and integer math. The 32 threads and 6.00 GHz boost clearly matter there. Pick the 285K if you run varied compute: it wins every Passmark test except integer math, all Geekbench tests, and two of three Cinebench multi-core tests. Builders who need integrated graphics, more PCIe lanes, or DDR5-only platforms with recorded 102.4 GB/s bandwidth get those only on the 285K. Builders with existing DDR4 kits can use them only on the 14900KF.

FAQ

Q: Which CPU is faster overall?

A: The Core Ultra 9 285K. It wins 15 of 19 head-to-head benchmarks, has a higher average benchmark score (83807 vs 79371), and ranks in the 96th percentile of all CPUs versus the 14900KF's 95th percentile.

Q: Which one is better for single-threaded work?

A: It depends on the test. The 285K wins Geekbench single-core (2870 vs 2727, 5.2%), Cinebench R20 single-core (3388 vs 2926, 15.8%), and Passmark single thread (5087 vs 4685, 8.6%). The 14900KF wins Cinebench R23 single-core by 65.9% (6969 vs 2377) and R15 single-core by 48.9% (702 vs 359).

Q: Do both chips have the same core count?

A: Yes, both have 24 cores, but the 285K runs 24 threads while the 14900KF runs 32 threads thanks to multithreading on part of its cores.

Q: Which platform supports older DDR4 memory?

A: Only the 14900KF. It supports both DDR4 and DDR5, while the 285K supports DDR5 exclusively.

Q: Do they use the same socket?

A: No. The 285K uses Socket 1851 and the 14900KF uses Socket 1700, so motherboards are not interchangeable.

Q: Which CPU has integrated graphics?

A: The 285K includes Arc Xe-LPG graphics with 64 EUs. The 14900KF has none.

Where Each One Wins

The 285K owns compute-heavy and mixed workloads. Its largest margins are in prime number calculation (134.2%), floating point math (47.7%), extended instructions (38.9%), encryption (24.4%), and physics (24.7%). It also leads in Cinebench R15 and R20 multi-core, both Geekbench tests, and every Passmark test except integer math. Rendering, simulation, encryption, physics, and general productivity all favor the newer chip. Its four extra PCIe Gen 5 lanes (20 vs 16) also matter for builds with multiple fast storage devices or add-in cards.

The 14900KF wins where its 32 threads and 6.00 GHz boost shine: Cinebench R23 in both single and multi-core, Cinebench R15 single-core, and integer math. If your day is dominated by R23-style rendering, or by integer-heavy code that fits its threading model, the recorded data says it still beats the newer chip there. Its DDR4 support also makes it the only option of the two for reusing older memory.

Specification Differences

• Architecture: Arrow Lake-S (285K) vs Raptor Lake-R (14900KF)
• Series: Core Ultra Series 2 vs Core 14th Gen
• Process node: 3 nm at TSMC vs 10 nm at Intel
• Cores/threads: 24 cores, 24 threads vs 24 cores, 32 threads
• Base clock: 3.70 GHz vs 3.20 GHz
• Boost clock: 5.70 GHz vs 6.00 GHz
• L1 cache: 192 KB per core vs 80 KB per core
• L2 cache: 3 MB per core vs 2 MB per core
• Transistors: 17,800 million vs not recorded
• Die size: 243 mm² vs 257 mm²
• Socket: 1851 vs 1700
• Memory: DDR5 only vs DDR4 and DDR5
• Memory bandwidth: 102.4 GB/s recorded vs not recorded
• PCIe lanes: Gen 5, 20 CPU lanes vs Gen 5, 16 CPU lanes
• Integrated graphics: Arc Xe-LPG 64EU vs none
• Release date: October 2024 vs October 2023
• Launch MSRP: $589 vs $564
• Part number: SRQD5 vs SRN49

Identical between the two: 125W TDP, 36 MB shared L3, dual-channel memory bus, ECC support, unlocked multiplier, desktop segment, and active production status.