Core i7-3770S vs Core i7-8665U

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 i7-3770S vs Core i7-8665U 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 i7-3770S vs Core i7-8665U: Pros, Cons & Final Verdict

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

Core i7-3770S

2012

Why buy it

✅100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
✅Integrated graphics onboard with HD Graphics 4000, while Core i7-8665U needs a discrete GPU.
✅Includes a boxed cooler (Stock), unlike Core i7-8665U.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-8665U across 50 shared CPU benchmark tests.
❌Lower PassMark (6,173 vs 6,202).
❌Launch MSRP is still $250 MSRP, while Core i7-8665U mostly shows up through inconsistent older-market listings.
❌333.3% higher power demand at 65W vs 15W.

Core i7-8665U

2019

Why buy it

✅Better for gaming: +3.3% higher average FPS across 50 shared CPU benchmark tests.
✅Draws 15W instead of 65W, a 50W reduction.

Trade-offs

❌No integrated graphics, while Core i7-3770S can still boot and troubleshoot without a discrete GPU.
❌No boxed cooler included, unlike Core i7-3770S.

Quick Answers

So, is Core i7-8665U better than Core i7-3770S?

Yes. Core i7-8665U is the better all-around CPU here. It gives you a 3.3% average FPS lead across 50 shared CPU game tests in our data, 0.5% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core i7-8665U is the better pick. According to our tests, it delivers 3.3% 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 i7-8665U is the stronger fit. You are getting 0.5% better PassMark, backed by 4 cores and 8 threads.

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

Core i7-8665U is still the much better call for a fresh build. Core i7-8665U comes in at an unclear MSRP at unclear MSRP versus $250 MSRP, and it still gives you a 3.3% average FPS lead across 50 shared CPU game tests in our data. Core i7-3770S only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2012 platform. Even with 100.0% better value on paper (24.7 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA1155.

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

Core i7-8665U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2012) and more multi-core headroom with 4 cores / 8 threads instead of 4/8. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i7-3770S vs Core i7-8665U Technical Specifications

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

Core i7-3770S

The Core i7-3770S is manufactured by Intel. It was released in 29 April 2012 (13 years ago). It is based on the Ivy Bridge (2012−2013) architecture. It features 4 cores and 8 threads. Base frequency is 3.1 GHz, with boost up to 3.9 GHz. L3 cache: 8192 kB (total). L2 cache: 256 kB (per core). Built on 22 nm process technology. Socket: LGA1155. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 6,173 points. Launch price was $330.

Core i7-8665U

The Core i7-8665U 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 1.9 GHz, with boost up to 4.8 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: DDR4. Passmark benchmark score: 6,202 points. Launch price was $409.

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Processing Power

Both the Core i7-3770S and Core i7-8665U share an identical 4-core/8-thread configuration. Boost clocks reach 3.9 GHz on the Core i7-3770S versus 4.8 GHz on the Core i7-8665U — a 20.7% clock advantage for the Core i7-8665U (base: 3.1 GHz vs 1.9 GHz). The Core i7-3770S uses the Ivy Bridge (2012−2013) architecture (22 nm), while the Core i7-8665U uses Whiskey Lake-U (2018−2019) (14 nm). In PassMark, the Core i7-3770S scores 6,173 against the Core i7-8665U's 6,202 — a 0.5% lead for the Core i7-8665U. L3 cache: 8192 kB (total) on the Core i7-3770S vs 8 MB (total) on the Core i7-8665U.

Feature	Core i7-3770S	Core i7-8665U
Cores / Threads	4 / 8	4 / 8
Boost Clock	3.9 GHz	4.8 GHz+23%
Base Clock	3.1 GHz+63%	1.9 GHz
L3 Cache	8192 kB (total)	8 MB (total)
L2 Cache	256 kB (per core)	256 kB (per core)
Process	22 nm	14 nm-36%
Architecture	Ivy Bridge (2012−2013)	Whiskey Lake-U (2018−2019)
PassMark	6,173	6,202
Cinebench R23 Multi	4,500	—
Geekbench 6 Single	694	—
Geekbench 6 Multi	2,303	—

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Memory & Platform

The Core i7-3770S uses the LGA1155 socket (PCIe 3.0), while the Core i7-8665U uses FCBGA1528 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i7-3770S	Core i7-8665U
Socket	LGA1155	FCBGA1528
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR3-1600	—
Max RAM Capacity	32 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	16	—

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Advanced Features

Virtualization: VT-x, VT-d (Core i7-3770S) / not specified (Core i7-8665U). The Core i7-3770S includes integrated graphics (HD Graphics 4000), while the Core i7-8665U requires a dedicated GPU. Primary use case: Core i7-3770S targets Budget.