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 i3-7350K vs Core i7-8665UE 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 i3-7350K vs Core i7-8665UE: Pros, Cons & Final Verdict

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

Core i3-7350K

2017

Why buy it

✅+0.7% higher PassMark.
✅Costs $230 less on MSRP ($179 MSRP vs $409 MSRP).
✅Delivers 130.1% more PassMark for each dollar spent, at 27.3 vs 11.9 PassMark/$ ($179 MSRP vs $409 MSRP).

Trade-offs

❌Smaller total L3 cache (4 MB vs 8 MB).
❌300% higher power demand at 60W vs 15W.

Core i7-8665UE

2018

Why buy it

✅+100% larger total L3 cache (8 MB vs 4 MB).
✅Draws 15W instead of 60W, a 45W reduction.

Trade-offs

❌Lower PassMark (4,852 vs 4,886).
❌Lower PassMark per dollar, at 11.9 vs 27.3 PassMark/$ ($409 MSRP vs $179 MSRP).

Quick Answers

So, is Core i7-8665UE better than Core i3-7350K?

It depends on what you want from the system. For gaming, Core i7-8665UE is ahead with a 1.6% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i3-7350K pulls ahead with 0.7% better PassMark. Core i7-8665UE also has the bigger cache pool with 100% larger total L3 cache (8 MB vs 4 MB).

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

For streaming, content creation, and heavier multitasking, Core i3-7350K is the stronger fit. You are getting 0.7% better PassMark, backed by 2 cores and 4 threads.

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

Core i7-8665UE is still the much better call for a fresh build. Core i7-8665UE comes in 128.5% more expensive on MSRP at $409 MSRP versus $179 MSRP, and it still gives you a 1.6% average FPS lead across 50 shared CPU game tests in our data. Core i3-7350K only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2017 platform. Even with 130.1% better value on paper (27.3 vs 11.9 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA1151.

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

Core i7-8665UE makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2018 vs 2017) and 100% larger total L3 cache (8 MB vs 4 MB). That makes it the safer long-term bet.

Core i3-7350K vs Core i7-8665UE Technical Specifications

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

Core i3-7350K

The Core i3-7350K is manufactured by Intel. It was released in 3 January 2017 (8 years ago). It is based on the Kaby Lake (2016−2019) architecture. It features 2 cores and 4 threads. Base frequency is 4.2 GHz, with boost up to 4.2 GHz. L3 cache: 4 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 60 Watt. Memory support: DDR4. Passmark benchmark score: 4,886 points. Launch price was $179.

Core i7-8665UE

The Core i7-8665UE is manufactured by Intel. It was released in 1 October 2018 (7 years ago). It is based on the Whiskey Lake-U (2018−2019) architecture. It features 4 cores and 8 threads. Base frequency is 1.7 GHz, with boost up to 4.4 GHz. L3 cache: 8 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: FCBGA1528. Thermal design power (TDP): 15 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 4,852 points. Launch price was $409.

⚡

Processing Power

The Core i3-7350K packs 2 cores / 4 threads, while the Core i7-8665UE offers 4 cores / 8 threads — the Core i7-8665UE has 2 more cores. Boost clocks reach 4.2 GHz on the Core i3-7350K versus 4.4 GHz on the Core i7-8665UE — a 4.7% clock advantage for the Core i7-8665UE (base: 4.2 GHz vs 1.7 GHz). The Core i3-7350K uses the Kaby Lake (2016−2019) architecture (14 nm), while the Core i7-8665UE uses Whiskey Lake-U (2018−2019) (14 nm). In PassMark, the Core i3-7350K scores 4,886 against the Core i7-8665UE's 4,852 — a 0.7% lead for the Core i3-7350K. L3 cache: 4 MB (total) on the Core i3-7350K vs 8 MB (total) on the Core i7-8665UE.

Feature	Core i3-7350K	Core i7-8665UE
Cores / Threads	2 / 4	4 / 8+100%
Boost Clock	4.2 GHz	4.4 GHz+5%
Base Clock	4.2 GHz+147%	1.7 GHz
L3 Cache	4 MB (total)	8 MB (total)+100%
L2 Cache	256K (per core)	256 kB (per core)
Process	14 nm	14 nm
Architecture	Kaby Lake (2016−2019)	Whiskey Lake-U (2018−2019)
PassMark	4,886	4,852
Cinebench R23 Multi	3,100	—
Geekbench 6 Single	1,298	—
Geekbench 6 Multi	2,740	—

🧠

Memory & Platform

The Core i3-7350K uses the LGA1151 socket (PCIe 3.0), while the Core i7-8665UE uses FCBGA1528 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-2400 memory speed. Both support up to 64 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes.

Feature	Core i3-7350K	Core i7-8665UE
Socket	LGA1151	FCBGA1528
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2400	DDR4-2400
Max RAM Capacity	64 GB	64 GB
RAM Channels	2	2
ECC Support	Yes	No
PCIe Lanes	16	16

🔧

Advanced Features

Virtualization support: true (Core i3-7350K) vs VT-x, VT-d (Core i7-8665UE). Both include integrated graphics — Intel HD Graphics 630 (Core i3-7350K) and UHD Graphics 620 (Core i7-8665UE) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i7-8665UE targets Embedded.

Feature	Core i3-7350K	Core i7-8665UE
Integrated GPU	Yes	Yes
IGPU Model	Intel HD Graphics 630	UHD Graphics 620
Unlocked	—	No
AVX-512	No	No
Virtualization	true	VT-x, VT-d
Target Use	—	Embedded

💰

Value Analysis

At launch, the Core i3-7350K was priced at $179, while the Core i7-8665UE came in at $409. On launch pricing ($179 vs $409), Core i3-7350K was $230 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i3-7350K delivers 27.3 pts/$ vs 11.9 pts/$ for the Core i7-8665UE — making the Core i3-7350K the 78.8% better value option.

Feature	Core i3-7350K	Core i7-8665UE
MSRP	$179-56%	$409
Performance per Dollar	27.3+129%	11.9
Release Date	2017	2018

Search Core i3-7350K on Amazon

Search Core i7-8665UE 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.