Core Ultra 9 285HX vs Xeon Gold 5420+

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 Ultra 9 285HX vs Xeon Gold 5420+ 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 Ultra 9 285HX vs Xeon Gold 5420+: Pros, Cons & Final Verdict

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

Core Ultra 9 285HX

2025

Why buy it

✅Better for gaming: +18.2% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 55W instead of 205W, a 150W reduction.
✅Integrated graphics onboard with Intel Arc Graphics, while Xeon Gold 5420+ needs a discrete GPU.

Trade-offs

❌Smaller total L3 cache (36 MB vs 53 MB).
❌Less compelling for workstation-style loads than Xeon Gold 5420+, which brings 28 cores / 56 threads and 80 PCIe lanes.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Xeon Gold 5420+

2023

Why buy it

✅+45.8% larger total L3 cache (53 MB vs 36 MB).
✅Better for workstations and heavier parallel workloads: 28 cores / 56 threads, plus 80 PCIe lanes vs 24.
✅233.3% more PCIe lanes (80 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core Ultra 9 285HX across 50 shared CPU benchmark tests.
❌Lower PassMark (58,209 vs 58,732).
❌Launch MSRP is still $1,848 MSRP, while Core Ultra 9 285HX mostly shows up through inconsistent older-market listings.
❌272.7% higher power demand at 205W vs 55W.
❌No integrated graphics, while Core Ultra 9 285HX can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core Ultra 9 285HX better than Xeon Gold 5420+?

Not really, because they are built for different jobs. Xeon Gold 5420+ makes more sense for workstation-style multi-core throughput, while Core Ultra 9 285HX 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 Ultra 9 285HX is the better pick. According to our tests, it delivers 18.2% 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 Ultra 9 285HX is the stronger fit. You are getting 0.9% better PassMark, backed by 24 cores and 24 threads.

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

Core Ultra 9 285HX is still the faster CPU overall, but Xeon Gold 5420+ is easier to justify if budget matters more than peak performance. Core Ultra 9 285HX comes in at an unclear MSRP at unclear MSRP versus $1,848 MSRP, and it still gives you a 18.2% average FPS lead across 50 shared CPU game tests in our data. Xeon Gold 5420+ is also 100.0% better value on MSRP (31.5 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

Core Ultra 9 285HX makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2023) and more multi-core headroom with 24 cores / 24 threads instead of 28/56. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core Ultra 9 285HX vs Xeon Gold 5420+ Technical Specifications

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

Core Ultra 9 285HX

The Core Ultra 9 285HX is manufactured by Intel. It was released in 2025-01-01. It is based on the Arrow Lake-S (2024−2025) architecture. It features 24 cores and 24 threads. Base frequency is 2.8 GHz, with boost up to 5.5 GHz. L3 cache: 36 MB (total). L2 cache: 3 MB (per core). Built on 3 nm process technology. Socket: FCBGA2114. Thermal design power (TDP): 55 Watt. Memory support: DDR5-6400. Passmark benchmark score: 58,732 points. Launch price was $650.

Xeon Gold 5420+

The Xeon Gold 5420+ 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 28 cores and 56 threads. Base frequency is 2 GHz, with boost up to 4.1 GHz. L3 cache: 52.5 MB. L2 cache: 2 MB (per core). Built on 10 nm process technology. Socket: LGA4677. Thermal design power (TDP): 205 Watt. Memory support: DDR5-4400. Passmark benchmark score: 58,209 points. Launch price was $1,848.

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Processing Power

The Core Ultra 9 285HX packs 24 cores / 24 threads, while the Xeon Gold 5420+ offers 28 cores / 56 threads — the Xeon Gold 5420+ has 4 more cores. Boost clocks reach 5.5 GHz on the Core Ultra 9 285HX versus 4.1 GHz on the Xeon Gold 5420+ — a 29.2% clock advantage for the Core Ultra 9 285HX (base: 2.8 GHz vs 2 GHz). The Core Ultra 9 285HX uses the Arrow Lake-S (2024−2025) architecture (3 nm), while the Xeon Gold 5420+ uses Sapphire Rapids (2023−2024) (10 nm). In PassMark, the Core Ultra 9 285HX scores 58,732 against the Xeon Gold 5420+'s 58,209 — a 0.9% lead for the Core Ultra 9 285HX. L3 cache: 36 MB (total) on the Core Ultra 9 285HX vs 52.5 MB on the Xeon Gold 5420+.

Feature	Core Ultra 9 285HX	Xeon Gold 5420+
Cores / Threads	24 / 24	28 / 56+17%
Boost Clock	5.5 GHz+34%	4.1 GHz
Base Clock	2.8 GHz+40%	2 GHz
L3 Cache	36 MB (total)	52.5 MB+46%
L2 Cache	3 MB (per core)+50%	2 MB (per core)
Process	3 nm-70%	10 nm
Architecture	Arrow Lake-S (2024−2025)	Sapphire Rapids (2023−2024)
PassMark	58,732	58,209
Geekbench 6 Single	3,106	—
Geekbench 6 Multi	22,200	—

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Memory & Platform

The Core Ultra 9 285HX uses the FCBGA2114 socket (PCIe 5.0), while the Xeon Gold 5420+ uses LGA4677 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-6400 on the Core Ultra 9 285HX versus 4800 on the Xeon Gold 5420+ — the Core Ultra 9 285HX supports 33.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 5420+ supports up to 4096 GB of RAM compared to 192 GB — 2033.3% more capacity for professional workloads. Memory channels: 2 (Core Ultra 9 285HX) vs 8 (Xeon Gold 5420+). PCIe lanes: 24 (Core Ultra 9 285HX) vs 80 (Xeon Gold 5420+) — the Xeon Gold 5420+ offers 56 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel HM870 (Core Ultra 9 285HX) and C741 (Xeon Gold 5420+).

Feature	Core Ultra 9 285HX	Xeon Gold 5420+
Socket	FCBGA2114	LGA4677
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-6400+33%	4800
Max RAM Capacity	192 GB	4096 GB+2033%
RAM Channels	2	8+300%
ECC Support	Yes	Yes
PCIe Lanes	24	80+233%

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Advanced Features

Only the Core Ultra 9 285HX has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon Gold 5420+ supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: true (Core Ultra 9 285HX) vs VT-x, VT-d (Xeon Gold 5420+). The Core Ultra 9 285HX includes integrated graphics (Intel Arc Graphics), while the Xeon Gold 5420+ requires a dedicated GPU. Direct competitor: Core Ultra 9 285HX rivals Ryzen 9 7945HX3D; Xeon Gold 5420+ rivals EPYC 9354.