AMD Ryzen 9 9950X3D vs Intel Core i9-14900KS Comparison

The Verdict

The benchmark data splits these two desktop flagships along clear workload lines. The AMD Ryzen 9 9950X3D wins 11 of the 17 recorded head-to-head comparisons, while the Intel Core i9-14900KS takes 6. The AMD part leads in most throughput-oriented and physics-heavy tests, while Intel dominates in specific Cinebench R23 and encryption workloads.

The Intel Core i9-14900KS is the pick for users running Cinebench R23 multi-threaded renders, where it scores 50,995 versus 42,018 for the AMD chip, a 21.4% advantage. It also holds a commanding edge in Cinebench R23 single-core, posting 7,199 against 2,259, a 218.7% gap. Data encryption also favors Intel, with 47,717 versus 44,536, a 7.1% margin.

The AMD Ryzen 9 9950X3D is the better choice for broader multi-threaded workloads, physics simulation, and extended instruction sets. Its PassMark multithread score of 70,255 beats Intel's 60,012 by 14.6%. Physics performance is a standout: 5,670 versus 3,381, a 40.4% lead. The largest AMD victory comes in prime number finding, where it scores 613 against Intel's 244, a 60.2% gap. Extended instructions also favor AMD heavily, 73,011 versus 45,524, a 37.6% difference.

Geekbench results give AMD the edge in both multi-core (26,736 versus 23,931, a 10.5% lead) and single-core (3,064 versus 2,692, a 12.1% lead). The AMD part also wins data compression, integer math, floating point math, and random string sorting by margins ranging from 3.6% to 12.6%.

The average benchmark scores tell a slightly different story. Intel's average is 81,127, placing it at the 96th percentile of all CPUs. AMD's average is 75,779, at the 95th percentile. Intel's nearest rivals are the Xeon w5-3535X at 81,115 (0% delta), the Ryzen 9 8940HX at 81,103 (0% delta), the Ryzen AI Max+ PRO 395 at 80,762 (0.5% higher), and the Xeon 638 at 80,723 (0.5% higher). AMD's nearest rivals include the Ryzen 7 PRO 9755 at 75,738 (0.1% higher), the Ryzen 7 PRO 9755X3D at 75,716 (0.1% higher), the EPYC 8224P at 75,582 (0.3% higher), and the Core Ultra 9 285 at 75,488 (0.4% higher).

For users prioritizing Cinebench rendering and encryption, the Intel part is the clear choice. For everyone else, especially those running physics, compression, or extended instruction workloads, the AMD part delivers more consistent wins.

Architecture Differences

The two processors represent fundamentally different design approaches. The Intel Core i9-14900KS uses the Raptor Lake architecture, specifically the Raptor Lake-R refresh, built on Intel's 10 nm process with a 257 mm² die. It packs 24 cores and 32 threads, combining performance and efficiency cores to reach a boost clock of 6.20 GHz with a 3.20 GHz base. The TDP is 150 W. It supports both DDR4 and DDR5 memory across a dual-channel bus, includes ECC memory support, and offers PCIe Gen 5 with 16 CPU lanes. Integrated graphics come via UHD Graphics 770.

The AMD Ryzen 9 9950X3D uses the Zen 5 architecture under the Granite Ridge codename, manufactured by TSMC on a 4 nm process. The die is reported as 2x 70.6 mm², with 16,630 million transistors. It has 16 cores and 32 threads, a 4.30 GHz base clock, and a 5.70 GHz boost clock. TDP is higher at 170 W. Memory support is DDR5 only, dual-channel, with a rated bandwidth of 89.6 GB/s. ECC memory is supported. PCIe connectivity is Gen 5 with 24 CPU lanes, and integrated graphics are Radeon Graphics.

Cache hierarchies differ substantially. Intel provides 80 KB of L1 per core, 2 MB of L2 per core, and 36 MB of shared L3. AMD also offers 80 KB of L1 per core but 1 MB of L2 per core, with a much larger 128 MB of L3. This larger L3 cache likely explains AMD's strong showing in physics and extended instruction benchmarks.

Both processors are desktop parts with unlocked multipliers, currently active in production. Intel launched on 2024-03-13 with a launch MSRP of $689. AMD launched later on 2025-01-05 with a launch MSRP of $699. The Intel part number is SRN7R, while AMD's is 100-000000719. Both use different sockets: Intel Socket 1700 versus AMD Socket AM5.

FAQ

Q: Which processor has the higher boost clock?

A: The Intel Core i9-14900KS reaches 6.20 GHz, while the AMD Ryzen 9 9950X3D tops out at 5.70 GHz.

Q: Does the AMD part have more L3 cache?

A: Yes. The AMD Ryzen 9 9950X3D has 128 MB of L3, while the Intel Core i9-14900KS has 36 MB shared.

Q: Which CPU wins in Cinebench R23 multi-core?

A: The Intel Core i9-14900KS wins with 50,995 versus 42,018, a 21.4% advantage.

Q: What is the biggest single benchmark margin in the comparison?

A: Cinebench R23 single-core shows the largest delta: Intel scores 7,199 against AMD's 2,259, a 218.7% difference.

Q: Which processor has more PCIe lanes?

A: The AMD Ryzen 9 9950X3D offers 24 Gen 5 CPU lanes, while the Intel part has 16 Gen 5 lanes.

Q: Are both processors unlocked for overclocking?

A: Yes, both have unlocked multipliers.

Specification Differences

The two CPUs differ across nearly every core specification. Intel uses 24 cores and 32 threads, while AMD uses 16 cores and 32 threads. Base clocks diverge: Intel runs at 3.20 GHz, AMD at 4.30 GHz. Boost clocks also differ, with Intel at 6.20 GHz and AMD at 5.70 GHz. TDP ratings are 150 W for Intel and 170 W for AMD.

Process technology separates them: Intel uses 10 nm with a 257 mm² die, while AMD uses 4 nm from TSMC with a 2x 70.6 mm² die and 16,630 million transistors. Memory support is DDR4 and DDR5 for Intel, DDR5 only for AMD. Memory bandwidth is not listed for Intel but AMD is rated at 89.6 GB/s. PCIe connectivity gives AMD more lanes: 24 Gen 5 lanes versus 16 Gen 5 lanes. Integrated graphics differ as well, with UHD Graphics 770 on Intel and Radeon Graphics on AMD.

The socket platforms are incompatible: Intel Socket 1700 versus AMD Socket AM5. Release dates place Intel at 2024-03-13 and AMD at 2025-01-05. Launch MSRP values are close, $689 for Intel and $699 for AMD. Both support ECC memory and have unlocked multipliers. L2 cache differs per core: 2 MB for Intel, 1 MB for AMD. L1 is identical at 80 KB per core.

Head-to-Head Benchmarks

The Cinebench results reveal an unusual split. In Cinebench R15 multi-core, AMD wins decisively with 6,536 versus 5,140, a 21.4% margin. But in Cinebench R23 multi-core, Intel reverses the result, scoring 50,995 against 42,018, also a 21.4% margin. Single-core results are even more lopsided. Intel wins Cinebench R15 single-core with 725 versus 350, a 107.1% gap, and Cinebench R23 single-core with 7,199 versus 2,259, a 218.7% gap. These numbers suggest the Intel architecture has a substantial single-thread advantage in the Cinebench suite, while AMD's newer design wins in the older R15 multi-core test.

Geekbench favors AMD across the board. Multi-core goes to AMD at 26,736 versus 23,931, a 10.5% lead. Single-core also goes to AMD at 3,064 versus 2,692, a 12.1% lead. This contrasts sharply with Cinebench single-core results, indicating benchmark-specific behavior rather than a universal single-thread superiority.

PassMark tests show AMD winning most categories. Data compression: AMD 908,421 versus Intel 803,368, an 11.6% lead. Extended instructions: AMD 73,011 versus Intel 45,524, a 37.6% lead. Prime number finding: AMD 613 versus Intel 244, a 60.2% lead. Floating point math: AMD 159,724 versus Intel 153,975, a 3.6% lead. Integer math: AMD 243,209 versus Intel 212,644, a 12.6% lead. Multithread: AMD 70,255 versus Intel 60,012, a 14.6% lead. Physics: AMD 5,670 versus Intel 3,381, a 40.4% lead. Random string sorting: AMD 95,423 versus Intel 89,789, a 5.9% lead.

Intel wins two PassMark tests. Data encryption: Intel 47,717 versus AMD 44,536, a 7.1% lead. Single-thread: Intel 4,815 versus AMD 4,737, a 1.6% lead. The single-thread margin is narrow, while the encryption win is more substantial.

The overall win count is 11 for AMD and 6 for Intel. The magnitude of Intel's wins in Cinebench R23 single-core and multi-core is notable, but AMD's broader set of victories across physics, extended instructions, and integer math suggests a more versatile performer for diverse workloads. The average benchmark score still favors Intel at 81,127 versus 75,779, despite AMD winning more head-to-head tests, which highlights how heavily Intel's Cinebench scores weigh into its aggregate.