PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

Core i9-14900KS

2024

Why buy it

✅Better for gaming: +25.4% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $1,619 less on MSRP ($749 MSRP vs $2,368 MSRP).
✅Delivers 225.5% more PassMark for each dollar spent, at 80.8 vs 24.8 PassMark/$ ($749 MSRP vs $2,368 MSRP).
✅Draws 150W instead of 185W, a 35W reduction.
✅Integrated graphics onboard with Intel UHD Graphics 770, while Xeon Gold 6421N needs a discrete GPU.

Trade-offs

❌Smaller total L3 cache (36 MB vs 60 MB).
❌Less compelling for workstation-style loads than Xeon Gold 6421N, which brings 32 cores / 64 threads and 80 PCIe lanes.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Xeon Gold 6421N

2023

Why buy it

✅+66.7% larger total L3 cache (60 MB vs 36 MB).
✅Better for workstations and heavier parallel workloads: 32 cores / 64 threads, plus 80 PCIe lanes vs 20.
✅300% more PCIe lanes (80 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-14900KS across 50 shared CPU benchmark tests.
❌Lower PassMark (58,797 vs 60,531).
❌Lower PassMark per dollar, at 24.8 vs 80.8 PassMark/$ ($2,368 MSRP vs $749 MSRP).
❌23.3% higher power demand at 185W vs 150W.
❌No integrated graphics, while Core i9-14900KS can still boot and troubleshoot without a discrete GPU.

Core i9-14900KS

2024

Xeon Gold 6421N

2023

Why buy it

✅Better for gaming: +25.4% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $1,619 less on MSRP ($749 MSRP vs $2,368 MSRP).
✅Delivers 225.5% more PassMark for each dollar spent, at 80.8 vs 24.8 PassMark/$ ($749 MSRP vs $2,368 MSRP).
✅Draws 150W instead of 185W, a 35W reduction.
✅Integrated graphics onboard with Intel UHD Graphics 770, while Xeon Gold 6421N needs a discrete GPU.

Why buy it

✅+66.7% larger total L3 cache (60 MB vs 36 MB).
✅Better for workstations and heavier parallel workloads: 32 cores / 64 threads, plus 80 PCIe lanes vs 20.
✅300% more PCIe lanes (80 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Smaller total L3 cache (36 MB vs 60 MB).
❌Less compelling for workstation-style loads than Xeon Gold 6421N, which brings 32 cores / 64 threads and 80 PCIe lanes.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Trade-offs

❌Worse for gaming: lower average FPS than Core i9-14900KS across 50 shared CPU benchmark tests.
❌Lower PassMark (58,797 vs 60,531).
❌Lower PassMark per dollar, at 24.8 vs 80.8 PassMark/$ ($2,368 MSRP vs $749 MSRP).
❌23.3% higher power demand at 185W vs 150W.
❌No integrated graphics, while Core i9-14900KS can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i9-14900KS better than Xeon Gold 6421N?

Not in a simple one-size-fits-all way. Xeon Gold 6421N makes more sense for workstation-style multi-core throughput, while Core i9-14900KS is the better mainstream desktop choice for gaming, platform cost, and day-to-day practicality.

Which one is better for gaming?

If gaming is the priority, Core i9-14900KS is the better pick here. According to our tests, it delivers 25.4% more average FPS across 50 shared CPU game tests.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Core i9-14900KS is the better fit. You are getting 2.9% better PassMark, backed by 24 cores and 32 threads.

Which one is the smarter buy today, not just the cheaper CPU?

Core i9-14900KS is the smarter buy today. Core i9-14900KS is $1,619 cheaper on MSRP at $749 MSRP versus $2,368 MSRP, and it gives you a 25.4% average FPS lead across 50 shared CPU game tests in our data. It is also 225.5% better value on MSRP (80.8 vs 24.8 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.

Which one is more future-proof for 2026 and beyond?

Core i9-14900KS is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2023) and more multi-core headroom with 24 cores / 32 threads instead of 32/64. That extra compute headroom should age better as games, background tasks, and creator workloads get heavier.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Core i9-14900KS Benchmark Check

Xeon Gold 6421N Benchmark Check

Path of Exile 2

Preset	Core i9-14900KS	Xeon Gold 6421N
1080p
low	325 FPS	200 FPS
medium	314 FPS	165 FPS
high	246 FPS	137 FPS
ultra	207 FPS	107 FPS
1440p
low	281 FPS	159 FPS
medium	241 FPS	124 FPS
high	177 FPS	98 FPS
ultra	156 FPS	77 FPS
4K
low	194 FPS	73 FPS
medium	165 FPS	61 FPS
high	122 FPS	47 FPS
ultra	110 FPS	39 FPS

Open Core i9-14900KS Open Xeon Gold 6421N

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i9-14900KS	Xeon Gold 6421N
1080p
low	792 FPS	239 FPS
medium	688 FPS	213 FPS
high	550 FPS	177 FPS
ultra	488 FPS	143 FPS
1440p
low	664 FPS	201 FPS
medium	597 FPS	182 FPS
high	490 FPS	157 FPS
ultra	400 FPS	122 FPS
4K
low	369 FPS	125 FPS
medium	336 FPS	116 FPS
high	312 FPS	102 FPS
ultra	275 FPS	83 FPS

Open Core i9-14900KS Open Xeon Gold 6421N

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i9-14900KS	Xeon Gold 6421N
1080p
low	794 FPS	956 FPS
medium	660 FPS	837 FPS
high	572 FPS	793 FPS
ultra	493 FPS	705 FPS
1440p
low	711 FPS	774 FPS
medium	599 FPS	668 FPS
high	512 FPS	623 FPS
ultra	450 FPS	555 FPS
4K
low	522 FPS	495 FPS
medium	463 FPS	391 FPS
high	412 FPS	342 FPS
ultra	352 FPS	279 FPS

Open Core i9-14900KS Open Xeon Gold 6421N

League of Legends

League of Legends

Valorant

Preset	Core i9-14900KS	Xeon Gold 6421N
1080p
low	1091 FPS	923 FPS
medium	975 FPS	832 FPS
high	853 FPS	717 FPS
ultra	760 FPS	619 FPS
1440p
low	900 FPS	715 FPS
medium	791 FPS	627 FPS
high	690 FPS	538 FPS
ultra	607 FPS	460 FPS
4K
low	662 FPS	516 FPS
medium	592 FPS	460 FPS
high	523 FPS	404 FPS
ultra	437 FPS	349 FPS

Open Core i9-14900KS Open Xeon Gold 6421N

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i9-14900KS and Xeon Gold 6421N

Core i9-14900KS

The Core i9-14900KS is manufactured by Intel. It was released in Marchar 2024 (1 year ago). It is based on the Raptor Lake-R (2023−2025) architecture. It features 24 cores and 32 threads. Base frequency is 3.2 GHz, with boost up to 5.9 GHz. L3 cache: 36 MB (total). L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 150 Watt. Memory support: DDR5-5600, DDR4-3200. Passmark benchmark score: 60,531 points. Launch price was $689.

Xeon Gold 6421N

The Xeon Gold 6421N is manufactured by Intel. It was released in 10 January 2023 (2 years ago). It is based on the Sapphire Rapids (2023−2024) architecture. It features 32 cores and 64 threads. Base frequency is 1.8 GHz, with boost up to 3.6 GHz. L3 cache: 60 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 185 Watt. Memory support: DDR5-4400. Passmark benchmark score: 58,797 points. Launch price was $2,368.

⚡

Processing Power

The Core i9-14900KS packs 24 cores / 32 threads, while the Xeon Gold 6421N offers 32 cores / 64 threads — the Xeon Gold 6421N has 8 more cores. Boost clocks reach 5.9 GHz on the Core i9-14900KS versus 3.6 GHz on the Xeon Gold 6421N — a 48.4% clock advantage for the Core i9-14900KS (base: 3.2 GHz vs 1.8 GHz). The Core i9-14900KS uses the Raptor Lake-R (2023−2025) architecture (Intel 7 nm), while the Xeon Gold 6421N uses Sapphire Rapids (2023−2024) (Intel 7 nm). In PassMark, the Core i9-14900KS scores 60,531 against the Xeon Gold 6421N's 58,797 — a 2.9% lead for the Core i9-14900KS. L3 cache: 36 MB (total) on the Core i9-14900KS vs 60 MB on the Xeon Gold 6421N.

Feature	Core i9-14900KS	Xeon Gold 6421N
Cores / Threads	24 / 32	32 / 64+33%
Boost Clock	5.9 GHz+64%	3.6 GHz
Base Clock	3.2 GHz+78%	1.8 GHz
L3 Cache	36 MB (total)	60 MB+67%
L2 Cache	2 MB (per core)	2 MB (per core)
Process	Intel 7 nm	Intel 7 nm
Architecture	Raptor Lake-R (2023−2025)	Sapphire Rapids (2023−2024)
PassMark	60,531+3%	58,797

🧠

Memory & Platform

The Core i9-14900KS uses the LGA1700 socket (PCIe 5.0), while the Xeon Gold 6421N uses LGA4677 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 5600 on the Core i9-14900KS versus 4800 on the Xeon Gold 6421N — the Core i9-14900KS supports 15.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6421N supports up to 4096 of RAM compared to 192 — 182.1% more capacity for professional workloads. Memory channels: 2 (Core i9-14900KS) vs 8 (Xeon Gold 6421N). PCIe lanes: 20 (Core i9-14900KS) vs 80 (Xeon Gold 6421N) — the Xeon Gold 6421N offers 60 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Z790,Z690 (Core i9-14900KS) and C741 (Xeon Gold 6421N).

Feature	Core i9-14900KS	Xeon Gold 6421N
Socket	LGA1700	LGA4677
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	5600+17%	4800
Max RAM Capacity	192	4096+2033%
RAM Channels	2	8+300%
ECC Support	Yes	Yes
PCIe Lanes	20	80+300%

🔧

Advanced Features

Only the Core i9-14900KS has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon Gold 6421N supports AVX-512 instructions — important for machine learning and scientific applications. Both support VT-x, VT-d virtualization. The Core i9-14900KS includes integrated graphics (Intel UHD Graphics 770), while the Xeon Gold 6421N requires a dedicated GPU. Direct competitor: Core i9-14900KS rivals Ryzen 9 7950X; Xeon Gold 6421N rivals EPYC 9354.

Feature	Core i9-14900KS	Xeon Gold 6421N
Integrated GPU	Yes	No
IGPU Model	Intel UHD Graphics 770	None
Unlocked	Yes	No
AVX-512	No	Yes
Virtualization	VT-x, VT-d	VT-x, VT-d

💰

Value Analysis

The Core i9-14900KS launched at $749 MSRP, while the Xeon Gold 6421N debuted at $2368. On MSRP ($749 vs $2368), the Core i9-14900KS is $1619 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i9-14900KS delivers 80.8 pts/$ vs 24.8 pts/$ for the Xeon Gold 6421N — making the Core i9-14900KS the 106% better value option.