Core i7-5775C vs Core i7-8705G

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 i7-5775C vs Core i7-8705G 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 i7-5775C vs Core i7-8705G: Pros, Cons & Final Verdict

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

Core i7-5775C

2015

Why buy it

✅+0.7% higher PassMark.
✅Costs $34 less on MSRP ($366 MSRP vs $400 MSRP).
✅Delivers 10.1% more PassMark for each dollar spent, at 21.0 vs 19.1 PassMark/$ ($366 MSRP vs $400 MSRP).

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-8705G across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (6 MB vs 8 MB).

Core i7-8705G

2018

Why buy it

✅Better for gaming: +4.2% higher average FPS across 50 shared CPU benchmark tests.
✅+33.3% larger total L3 cache (8 MB vs 6 MB).

Trade-offs

❌Lower PassMark (7,633 vs 7,688).
❌Lower PassMark per dollar, at 19.1 vs 21.0 PassMark/$ ($400 MSRP vs $366 MSRP).

Quick Answers

So, is Core i7-5775C better than Core i7-8705G?

It depends on what you want from the system. For gaming, Core i7-8705G is ahead with a 4.2% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i7-5775C pulls ahead with 0.7% better PassMark. Core i7-8705G also has the bigger cache pool with 33.3% larger total L3 cache (8 MB vs 6 MB).

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

For streaming, content creation, and heavier multitasking, Core i7-5775C is the stronger fit. You are getting 0.7% better PassMark, backed by 4 cores and 8 threads.

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

Core i7-5775C is the better buy right now. Core i7-5775C comes in $34 cheaper on MSRP at $366 MSRP versus $400 MSRP, and it still gives you 0.7% better PassMark. The compromise is that Core i7-8705G is still the better pure gaming CPU with a 4.2% average FPS lead across 50 shared CPU game tests in our data. It is also 10.1% better value on MSRP (21.0 vs 19.1 PassMark/$), 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 i7-8705G makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2018 vs 2015) and 33.3% larger total L3 cache (8 MB vs 6 MB). That makes it the safer long-term bet.

Core i7-5775C vs Core i7-8705G Technical Specifications

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

Core i7-5775C

The Core i7-5775C is manufactured by Intel. It was released in 15 May 2015 (10 years ago). It is based on the Broadwell (2015−2019) architecture. It features 4 cores and 8 threads. Base frequency is 3.3 GHz, with boost up to 3.7 GHz. L3 cache: 6 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1150. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 7,688 points. Launch price was $366.

Core i7-8705G

The Core i7-8705G is manufactured by Intel. It was released in 1 February 2018 (7 years ago). It is based on the Kaby Lake G (2018) architecture. It features 4 cores and 8 threads. Base frequency is 3.1 GHz, with boost up to 4.1 GHz. L3 cache: 8 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA2270. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 7,633 points. Launch price was $149.

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Processing Power

Both the Core i7-5775C and Core i7-8705G share an identical 4-core/8-thread configuration. Boost clocks reach 3.7 GHz on the Core i7-5775C versus 4.1 GHz on the Core i7-8705G — a 10.3% clock advantage for the Core i7-8705G (base: 3.3 GHz vs 3.1 GHz). The Core i7-5775C uses the Broadwell (2015−2019) architecture (14 nm), while the Core i7-8705G uses Kaby Lake G (2018) (14 nm). In PassMark, the Core i7-5775C scores 7,688 against the Core i7-8705G's 7,633 — a 0.7% lead for the Core i7-5775C. L3 cache: 6 MB (total) on the Core i7-5775C vs 8 MB (total) on the Core i7-8705G.

Feature	Core i7-5775C	Core i7-8705G
Cores / Threads	4 / 8	4 / 8
Boost Clock	3.7 GHz	4.1 GHz+11%
Base Clock	3.3 GHz+6%	3.1 GHz
L3 Cache	6 MB (total)	8 MB (total)+33%
L2 Cache	256 kB (per core)	256K (per core)
Process	14 nm	14 nm
Architecture	Broadwell (2015−2019)	Kaby Lake G (2018)
PassMark	7,688	7,633

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Memory & Platform

The Core i7-5775C uses the LGA1150 socket (PCIe 3.0), while the Core i7-8705G uses FCBGA2270 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i7-5775C	Core i7-8705G
Socket	LGA1150	FCBGA2270
PCIe Generation	PCIe 3.0	PCIe 3.0

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Value Analysis

At launch, the Core i7-5775C was priced at $366, while the Core i7-8705G came in at $400. On launch pricing ($366 vs $400), Core i7-5775C was $34 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-5775C delivers 21.0 pts/$ vs 19.1 pts/$ for the Core i7-8705G — making the Core i7-5775C the 9.6% better value option.

Feature	Core i7-5775C	Core i7-8705G
MSRP	$366-9%	$400
Performance per Dollar	21.0+10%	19.1
Release Date	2015	2018

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