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.

Core i9-14900KS vs Xeon Gold 6421N FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Core i9-14900KS vs Xeon Gold 6421N: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

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.

Quick Answers

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

Not really, because they are built for different jobs. Xeon Gold 6421N makes more sense for workstation-style multi-core throughput, while Core i9-14900KS is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Core i9-14900KS is the better pick. 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 stronger 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 better buy right now. Core i9-14900KS comes in $1,619 cheaper on MSRP at $749 MSRP versus $2,368 MSRP, and it still gives you a 25.4% average FPS lead across 50 shared CPU game tests in our data. It is also 225.5% better value on MSRP (80.8 vs 24.8 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Core i9-14900KS makes more sense long term 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 is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i9-14900KS vs Xeon Gold 6421N Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

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 16.7% 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 — 2033.3% 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

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

Feature	Core i9-14900KS	Xeon Gold 6421N
MSRP	$749-68%	$2368
Performance per Dollar	80.8+226%	24.8
Release Date	2024	2023

Search Core i9-14900KS on Amazon

Search Xeon Gold 6421N on Amazon

Affiliate Disclosure

ChipVERSUS is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. We may earn a commission on qualifying purchases made through our links. This comes at no additional cost to you and helps support our work in providing comprehensive PC building guides and tools.

Amazon and the Amazon logo are trademarks of Amazon.com, Inc. or its affiliates.