Core i5-12400F vs Core i7-5775C

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 i5-12400F vs Core i7-5775C 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 i5-12400F vs Core i7-5775C: Pros, Cons & Final Verdict

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

Core i5-12400F

2022

Why buy it

✅Better for gaming: +63.1% higher average FPS across 50 shared CPU benchmark tests.
✅+200% larger total L3 cache (18 MB vs 6 MB).
✅Costs $192 less on MSRP ($174 MSRP vs $366 MSRP).
✅Delivers 434.4% more PassMark for each dollar spent, at 112.3 vs 21.0 PassMark/$ ($174 MSRP vs $366 MSRP).
✅Newer platform on LGA1700 with DDR5 support instead of LGA1150 and older memory support.

Trade-offs

❌Fewer obvious downsides in this matchup outside of normal market pricing swings.

Core i7-5775C

2015

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Core i5-12400F across 50 shared CPU benchmark tests.
❌Lower PassMark (7,688 vs 19,532).
❌Smaller total L3 cache (6 MB vs 18 MB).
❌Lower PassMark per dollar, at 21.0 vs 112.3 PassMark/$ ($366 MSRP vs $174 MSRP).
❌Older platform position on LGA1150, while Core i5-12400F moves to LGA1700 and DDR5.

Quick Answers

So, is Core i5-12400F better than Core i7-5775C?

Yes. Core i5-12400F is the better all-around CPU here. It gives you a 63.1% average FPS lead across 50 shared CPU game tests in our data, 154.1% 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 i5-12400F is the better pick. According to our tests, it delivers 63.1% 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 i5-12400F is the stronger fit. You are getting 154.1% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 200% larger total L3 cache (18 MB vs 6 MB).

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

Core i5-12400F is the better buy right now. Core i5-12400F comes in $192 cheaper on MSRP at $174 MSRP versus $366 MSRP, and it still gives you a 63.1% average FPS lead across 50 shared CPU game tests in our data. It is also 434.4% better value on MSRP (112.3 vs 21.0 PassMark/$), 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 i5-12400F makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2015), a healthier platform with LGA1700 and DDR5 instead of LGA1150, 200% larger total L3 cache (18 MB vs 6 MB), and more multi-core headroom with 6 cores / 12 threads instead of 4/8. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i5-12400F vs Core i7-5775C Technical Specifications

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

Core i5-12400F

The Core i5-12400F is manufactured by Intel. It was released in 4 January 2022 (3 years ago). It is based on the Alder Lake-S (2022) architecture. It features 6 cores and 12 threads. Base frequency is 2.5 GHz, with boost up to 4.4 GHz. L3 cache: 18 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 65 Watt. Memory support: DDR5-4800, DDR4-3200. Passmark benchmark score: 19,532 points. Launch price was $180.

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.

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Processing Power

The Core i5-12400F packs 6 cores / 12 threads, while the Core i7-5775C offers 4 cores / 8 threads — the Core i5-12400F has 2 more cores. Boost clocks reach 4.4 GHz on the Core i5-12400F versus 3.7 GHz on the Core i7-5775C — a 17.3% clock advantage for the Core i5-12400F (base: 2.5 GHz vs 3.3 GHz). The Core i5-12400F uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Core i7-5775C uses Broadwell (2015−2019) (14 nm). In PassMark, the Core i5-12400F scores 19,532 against the Core i7-5775C's 7,688 — a 87% lead for the Core i5-12400F. L3 cache: 18 MB (total) on the Core i5-12400F vs 6 MB (total) on the Core i7-5775C.

Feature	Core i5-12400F	Core i7-5775C
Cores / Threads	6 / 12+50%	4 / 8
Boost Clock	4.4 GHz+19%	3.7 GHz
Base Clock	2.5 GHz	3.3 GHz+32%
L3 Cache	18 MB (total)+200%	6 MB (total)
L2 Cache	1.25 MB (per core)+400%	256 kB (per core)
Process	Intel 7 nm-50%	14 nm
Architecture	Alder Lake-S (2022)	Broadwell (2015−2019)
PassMark	19,532+154%	7,688
Cinebench R23 Multi	12,380	—
Geekbench 6 Single	1,700	—
Geekbench 6 Multi	657	—

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Memory & Platform

The Core i5-12400F uses the LGA1700 socket (PCIe 3.0), while the Core i7-5775C uses LGA1150 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i5-12400F	Core i7-5775C
Socket	LGA1700	LGA1150
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR5-4800, DDR4-3200	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	20	—

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Advanced Features

Virtualization: VT-x, VT-d, EPT (Core i5-12400F) / not specified (Core i7-5775C). Primary use case: Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.

Feature	Core i5-12400F	Core i7-5775C
Integrated GPU	No	—
Virtualization	VT-x, VT-d, EPT	—
Target Use	Gaming Performance/Value	—

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Value Analysis

At launch, the Core i5-12400F was priced at $174, while the Core i7-5775C came in at $366. On launch pricing ($174 vs $366), Core i5-12400F was $192 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-12400F delivers 112.3 pts/$ vs 21.0 pts/$ for the Core i7-5775C — making the Core i5-12400F the 136.9% better value option.

Feature	Core i5-12400F	Core i7-5775C
MSRP	$174-52%	$366
Performance per Dollar	112.3+435%	21.0
Release Date	2022	2015

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