Core i3-1005G1 vs Core i7-8665UE

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 i3-1005G1 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 i3-1005G1 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 i3-1005G1

2019

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-8665UE across 50 shared CPU benchmark tests.
❌Lower PassMark (4,827 vs 4,852).
❌Smaller total L3 cache (4 MB vs 8 MB).

Core i7-8665UE

2018

Why buy it

✅Better for gaming: +16.9% higher average FPS across 50 shared CPU benchmark tests.
✅+100% larger total L3 cache (8 MB vs 4 MB).

Trade-offs

❌Launch MSRP is still $409 MSRP, while Core i3-1005G1 mostly shows up through inconsistent older-market listings.

Quick Answers

So, is Core i7-8665UE better than Core i3-1005G1?

Yes. Core i7-8665UE is the better all-around CPU here. It gives you a 16.9% average FPS lead across 50 shared CPU game tests in our data and 0.5% better PassMark, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, Core i7-8665UE is the better pick. According to our tests, it delivers 16.9% 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 i7-8665UE is the stronger fit. You are getting 0.5% better PassMark, backed by 4 cores and 8 threads. It also has the larger cache pool with 100% larger total L3 cache (8 MB vs 4 MB).

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

Core i7-8665UE is the better buy right now. Core i7-8665UE comes in at an unclear MSRP at $409 MSRP versus unclear MSRP, and it still gives you a 16.9% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (11.9 vs 0.0 PassMark/$), 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 i3-1005G1 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2018). That makes it the safer long-term bet.

Core i3-1005G1 vs Core i7-8665UE Technical Specifications

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

Core i3-1005G1

The Core i3-1005G1 is manufactured by Intel. It was released in 1 August 2019 (6 years ago). It is based on the Ice Lake (Client) (2019) architecture. It features 2 cores and 4 threads. Base frequency is 1.2 GHz, with boost up to 3.4 GHz. L3 cache: 4 MB (total). L2 cache: 256K (per core). Built on 10 nm process technology. Socket: FCBGA1526. Thermal design power (TDP): 15 Watt. Memory support: DDR4. Passmark benchmark score: 4,827 points. Launch price was $281.

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.

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Processing Power

The Core i3-1005G1 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 3.4 GHz on the Core i3-1005G1 versus 4.4 GHz on the Core i7-8665UE — a 25.6% clock advantage for the Core i7-8665UE (base: 1.2 GHz vs 1.7 GHz). The Core i3-1005G1 uses the Ice Lake (Client) (2019) architecture (10 nm), while the Core i7-8665UE uses Whiskey Lake-U (2018−2019) (14 nm). In PassMark, the Core i3-1005G1 scores 4,827 against the Core i7-8665UE's 4,852 — a 0.5% lead for the Core i7-8665UE. L3 cache: 4 MB (total) on the Core i3-1005G1 vs 8 MB (total) on the Core i7-8665UE.

Feature	Core i3-1005G1	Core i7-8665UE
Cores / Threads	2 / 4	4 / 8+100%
Boost Clock	3.4 GHz	4.4 GHz+29%
Base Clock	1.2 GHz	1.7 GHz+42%
L3 Cache	4 MB (total)	8 MB (total)+100%
L2 Cache	256K (per core)	256 kB (per core)
Process	10 nm-29%	14 nm
Architecture	Ice Lake (Client) (2019)	Whiskey Lake-U (2018−2019)
PassMark	4,827	4,852
Cinebench R23 Multi	2,319	—
Geekbench 6 Single	603	—
Geekbench 6 Multi	2,605	—

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Memory & Platform

The Core i3-1005G1 uses the FCBGA1526 socket (PCIe 3.0), while the Core i7-8665UE uses FCBGA1528 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 / LPDDR4-3733 on the Core i3-1005G1 versus DDR4-2400 on the Core i7-8665UE — the Core i3-1005G1 supports 33.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 64 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes.

Feature	Core i3-1005G1	Core i7-8665UE
Socket	FCBGA1526	FCBGA1528
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-3200 / LPDDR4-3733+33%	DDR4-2400
Max RAM Capacity	64 GB	64 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16	16

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Advanced Features

Neither processor supports overclocking. Only the Core i3-1005G1 supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x / VT-d / EPT (Core i3-1005G1) vs VT-x, VT-d (Core i7-8665UE). Both include integrated graphics — Intel UHD Graphics (Ice Lake) (Core i3-1005G1) and UHD Graphics 620 (Core i7-8665UE) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i3-1005G1 targets Thin-and-light, Core i7-8665UE targets Embedded.

Feature	Core i3-1005G1	Core i7-8665UE
Integrated GPU	Yes	Yes
IGPU Model	Intel UHD Graphics (Ice Lake)	UHD Graphics 620
Unlocked	No	No
AVX-512	Yes	No
Virtualization	VT-x / VT-d / EPT	VT-x, VT-d
Target Use	Thin-and-light	Embedded