Core 3 N355 vs Core i5-9600K

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 3 N355 vs Core i5-9600K 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 3 N355 vs Core i5-9600K: Pros, Cons & Final Verdict

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

Core 3 N355

2025

Why buy it

✅Draws 15W instead of 95W, a 80W reduction.
✅Newer platform on FCBGA1264 with DDR5 support instead of LGA1151 and DDR4.

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-9600K across 50 shared CPU benchmark tests.
❌Lower PassMark (10,502 vs 10,645).
❌Smaller total L3 cache (6 MB vs 9 MB).
❌Lower PassMark per dollar, at 35.0 vs 40.5 PassMark/$ ($300 MSRP vs $263 MSRP).
❌No integrated graphics, while Core i5-9600K can still boot and troubleshoot without a discrete GPU.

Core i5-9600K

2018

Why buy it

✅Better for gaming: +10.2% higher average FPS across 50 shared CPU benchmark tests.
✅+50% larger total L3 cache (9 MB vs 6 MB).
✅Costs $37 less on MSRP ($263 MSRP vs $300 MSRP).
✅Delivers 15.6% more PassMark for each dollar spent, at 40.5 vs 35.0 PassMark/$ ($263 MSRP vs $300 MSRP).
✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌533.3% higher power demand at 95W vs 15W.
❌Older platform position on LGA1151 with DDR4, while Core 3 N355 moves to FCBGA1264 and DDR5.

Quick Answers

So, is Core i5-9600K better than Core 3 N355?

Yes. Core i5-9600K is the better all-around CPU here. It gives you a 10.2% average FPS lead across 50 shared CPU game tests in our data and 1.4% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core i5-9600K is the better pick. According to our tests, it delivers 10.2% 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 i5-9600K is the stronger fit. You are getting 1.4% better PassMark, backed by 6 cores and 6 threads. It also has the larger cache pool with 50% larger total L3 cache (9 MB vs 6 MB).

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

Core i5-9600K is the better buy right now. Core i5-9600K comes in $37 cheaper on MSRP at $263 MSRP versus $300 MSRP, and it still gives you a 10.2% average FPS lead across 50 shared CPU game tests in our data. It is also 15.6% better value on MSRP (40.5 vs 35.0 PassMark/$), 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 3 N355 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2018) and a healthier platform with FCBGA1264 and DDR5 instead of LGA1151. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core 3 N355 vs Core i5-9600K Technical Specifications

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

Core 3 N355

The Core 3 N355 is manufactured by Intel. It was released in 7 January 2025 (less than a year ago). It is based on the Twin Lake (2024−2025) architecture. It features 8 cores and 8 threads. Base frequency is 0.1 GHz, with boost up to 3.9 GHz. L3 cache: 6 MB (total). L2 cache: 2 MB (total). Built on Intel 7 nm process technology. Socket: FCBGA1264. Thermal design power (TDP): 15 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 10,502 points. Launch price was $149.

Core i5-9600K

The Core i5-9600K is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Coffee Lake-R (2018−2019) architecture. It features 6 cores and 6 threads. Base frequency is 3.7 GHz, with boost up to 4.6 GHz. L3 cache: 9 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 95 Watt. Memory support: DDR4-2666. Passmark benchmark score: 10,645 points. Launch price was $262.

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Processing Power

The Core 3 N355 packs 8 cores / 8 threads, while the Core i5-9600K offers 6 cores / 6 threads — the Core 3 N355 has 2 more cores. Boost clocks reach 3.9 GHz on the Core 3 N355 versus 4.6 GHz on the Core i5-9600K — a 16.5% clock advantage for the Core i5-9600K (base: 0.1 GHz vs 3.7 GHz). The Core 3 N355 uses the Twin Lake (2024−2025) architecture (Intel 7 nm), while the Core i5-9600K uses Coffee Lake-R (2018−2019) (14 nm). In PassMark, the Core 3 N355 scores 10,502 against the Core i5-9600K's 10,645 — a 1.4% lead for the Core i5-9600K. L3 cache: 6 MB (total) on the Core 3 N355 vs 9 MB (total) on the Core i5-9600K.

Feature	Core 3 N355	Core i5-9600K
Cores / Threads	8 / 8+33%	6 / 6
Boost Clock	3.9 GHz	4.6 GHz+18%
Base Clock	0.1 GHz	3.7 GHz+3600%
L3 Cache	6 MB (total)	9 MB (total)+50%
L2 Cache	2 MB (total)	256K (per core)+12700%
Process	Intel 7 nm-50%	14 nm
Architecture	Twin Lake (2024−2025)	Coffee Lake-R (2018−2019)
PassMark	10,502	10,645+1%

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Memory & Platform

The Core 3 N355 uses the FCBGA1264 socket (PCIe 4.0), while the Core i5-9600K uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core 3 N355	Core i5-9600K
Socket	FCBGA1264	LGA1151
PCIe Generation	PCIe 4.0+33%	PCIe 3.0
Max RAM Speed	—	2666
Max RAM Capacity	—	128
RAM Channels	—	2
ECC Support	—	No
PCIe Lanes	—	16

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Advanced Features

Virtualization: not specified (Core 3 N355) / true (Core i5-9600K). The Core i5-9600K includes integrated graphics (Intel UHD Graphics 630), while the Core 3 N355 requires a dedicated GPU.

Feature	Core 3 N355	Core i5-9600K
Integrated GPU	—	Yes
IGPU Model	—	Intel UHD Graphics 630
Unlocked	—	Yes
AVX-512	—	No
Virtualization	—	true

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Value Analysis

At launch, the Core 3 N355 was priced at $300, while the Core i5-9600K came in at $263. On launch pricing ($300 vs $263), Core i5-9600K was $37 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core 3 N355 delivers 35.0 pts/$ vs 40.5 pts/$ for the Core i5-9600K — making the Core i5-9600K the 14.5% better value option.

Feature	Core 3 N355	Core i5-9600K
MSRP	$300	$263-12%
Performance per Dollar	35.0	40.5+16%
Release Date	2025	2018

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