Core i5-12400F vs Core i7-7820X

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 i7-7820X 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 i7-7820X: 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

✅+13.7% higher PassMark.
✅+63.6% larger total L3 cache (18 MB vs 11 MB).
✅Costs $425 less on MSRP ($174 MSRP vs $599 MSRP).
✅Delivers 291.6% more PassMark for each dollar spent, at 112.3 vs 28.7 PassMark/$ ($174 MSRP vs $599 MSRP).
✅Draws 65W instead of 140W, a 75W reduction.

Trade-offs

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

Core i7-7820X

2017

Why buy it

Trade-offs

❌Lower PassMark (17,171 vs 19,532).
❌Smaller total L3 cache (11 MB vs 18 MB).
❌Lower PassMark per dollar, at 28.7 vs 112.3 PassMark/$ ($599 MSRP vs $174 MSRP).
❌115.4% higher power demand at 140W vs 65W.
❌Older platform position on LGA2066 with DDR4, while Core i5-12400F moves to LGA1700 and DDR5.

Quick Answers

So, is Core i5-12400F better than Core i7-7820X?

It depends on what you want from the system. For gaming, Core i7-7820X is ahead with a 2.4% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i5-12400F pulls ahead with 13.7% better PassMark. Core i5-12400F also has the bigger cache pool with 63.6% larger total L3 cache (18 MB vs 11 MB).

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 13.7% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 63.6% larger total L3 cache (18 MB vs 11 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 $425 cheaper on MSRP at $174 MSRP versus $599 MSRP, and it still gives you 13.7% better PassMark. The compromise is that Core i7-7820X is still the better pure gaming CPU with a 2.4% average FPS lead across 50 shared CPU game tests in our data. It is also 291.6% better value on MSRP (112.3 vs 28.7 PassMark/$), 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 2017), a healthier platform with LGA1700 and DDR5 instead of LGA2066, 63.6% larger total L3 cache (18 MB vs 11 MB), and more multi-core headroom with 6 cores / 12 threads instead of 8/16. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i5-12400F vs Core i7-7820X 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 i7-7820X

The Core i7-7820X is manufactured by Intel. It was released in 26 June 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 8 cores and 16 threads. Base frequency is 3.6 GHz, with boost up to 4.5 GHz. L3 cache: 11 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 140 Watt. Memory support: DDR4-2666. Passmark benchmark score: 17,171 points. Launch price was $599.

⚡

Processing Power

The Core i5-12400F packs 6 cores / 12 threads, while the Core i7-7820X offers 8 cores / 16 threads — the Core i7-7820X has 2 more cores. Boost clocks reach 4.4 GHz on the Core i5-12400F versus 4.5 GHz on the Core i7-7820X — a 2.2% clock advantage for the Core i7-7820X (base: 2.5 GHz vs 3.6 GHz). The Core i5-12400F uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Core i7-7820X uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Core i5-12400F scores 19,532 against the Core i7-7820X's 17,171 — a 12.9% lead for the Core i5-12400F. L3 cache: 18 MB (total) on the Core i5-12400F vs 11 MB (total) on the Core i7-7820X.

Feature	Core i5-12400F	Core i7-7820X
Cores / Threads	6 / 12	8 / 16+33%
Boost Clock	4.4 GHz	4.5 GHz+2%
Base Clock	2.5 GHz	3.6 GHz+44%
L3 Cache	18 MB (total)+64%	11 MB (total)
L2 Cache	1.25 MB (per core)+25%	1 MB (per core)
Process	Intel 7 nm-50%	14 nm
Architecture	Alder Lake-S (2022)	Skylake (server) (2017−2018)
PassMark	19,532+14%	17,171
Cinebench R23 Multi	12,380	—
Geekbench 6 Single	1,700	—
Geekbench 6 Multi	657	—

🧠

Memory & Platform

The Core i5-12400F uses the LGA1700 socket (PCIe 3.0), while the Core i7-7820X uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i5-12400F	Core i7-7820X
Socket	LGA1700	LGA2066
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	—

🔧

Advanced Features

Virtualization: VT-x, VT-d, EPT (Core i5-12400F) / not specified (Core i7-7820X). Primary use case: Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.

Feature	Core i5-12400F	Core i7-7820X
Integrated GPU	No	—
Virtualization	VT-x, VT-d, EPT	—
Target Use	Gaming Performance/Value	—

💰

Value Analysis

At launch, the Core i5-12400F was priced at $174, while the Core i7-7820X came in at $599. On launch pricing ($174 vs $599), Core i5-12400F was $425 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-12400F delivers 112.3 pts/$ vs 28.7 pts/$ for the Core i7-7820X — making the Core i5-12400F the 118.6% better value option.

Feature	Core i5-12400F	Core i7-7820X
MSRP	$174-71%	$599
Performance per Dollar	112.3+291%	28.7
Release Date	2022	2017

Search Core i5-12400F on Amazon

Search Core i7-7820X 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.