Core i7-12700K vs Core i9-10940X

Intel

Core i7-12700K

12 Cores20 Thrd125 WWMax: 5 GHz2021

Popular choices:

VS
Intel

Core i9-10940X

14 Cores28 Thrd165 WWMax: 4.8 GHz2019

Popular choices:

i7-12700K

Performance Spectrum - CPU

About PassMark

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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

Core i7-12700K

2021

Why buy it

  • Better for gaming: +5.2% higher average FPS across 50 shared CPU benchmark tests.
  • +29.9% larger total L3 cache (25 MB vs 19 MB).
  • Costs $375 less on MSRP ($409 MSRP vs $784 MSRP).
  • Delivers 137.8% more PassMark for each dollar spent, at 84.0 vs 35.3 PassMark/$ ($409 MSRP vs $784 MSRP).
  • Draws 125W instead of 165W, a 40W reduction.

Trade-offs

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

Core i9-10940X

2019

Why buy it

  • 140% more PCIe lanes (48 vs 20) for storage and expansion-heavy builds.

Trade-offs

  • Worse for gaming: lower average FPS than Core i7-12700K across 50 shared CPU benchmark tests.
  • Lower PassMark (27,684 vs 34,347).
  • Smaller total L3 cache (19 MB vs 25 MB).
  • Lower PassMark per dollar, at 35.3 vs 84.0 PassMark/$ ($784 MSRP vs $409 MSRP).
  • 32% higher power demand at 165W vs 125W.

Quick Answers

So, is Core i7-12700K better than Core i9-10940X?
Yes. Core i7-12700K is the better overall CPU here. You are getting a 5.2% average FPS lead across 50 shared CPU game tests in our data, 24.1% better PassMark, and the stronger long-term platform, which makes it the stronger all-around choice.
Which one is better for gaming?
If gaming is the priority, Core i7-12700K is the better pick here. According to our tests, it delivers 5.2% 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 i7-12700K is the better fit. You are getting 24.1% better PassMark, backed by 12 cores and 20 threads. It also carries the larger cache pool with 29.9% larger total L3 cache (25 MB vs 19 MB).
Which one is the smarter buy today, not just the cheaper CPU?
Core i7-12700K is the smarter buy today. Core i7-12700K is $375 cheaper on MSRP at $409 MSRP versus $784 MSRP, and it gives you a 5.2% average FPS lead across 50 shared CPU game tests in our data. It is also 137.8% better value on MSRP (84.0 vs 35.3 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.
Which one is more future-proof for 2026 and beyond?
Core i7-12700K is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2019), a healthier platform with LGA1700 and DDR5 instead of LGA2066, 29.9% larger total L3 cache (25 MB vs 19 MB), and more multi-core headroom with 12 cores / 20 threads instead of 14/28. That should give you a better long-term upgrade path for motherboard, RAM, and future CPU swaps.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

Path of Exile 2

Path of Exile 2

PresetCore i7-12700KCore i9-10940X
1080p
low314 FPS279 FPS
medium295 FPS249 FPS
high246 FPS206 FPS
ultra193 FPS174 FPS
1440p
low269 FPS233 FPS
medium225 FPS189 FPS
high182 FPS154 FPS
ultra145 FPS134 FPS
4K
low170 FPS164 FPS
medium142 FPS134 FPS
high109 FPS105 FPS
ultra96 FPS90 FPS
Counter-Strike 2

Counter-Strike 2

PresetCore i7-12700KCore i9-10940X
1080p
low630 FPS550 FPS
medium533 FPS457 FPS
high450 FPS379 FPS
ultra410 FPS342 FPS
1440p
low536 FPS456 FPS
medium475 FPS394 FPS
high403 FPS332 FPS
ultra349 FPS287 FPS
4K
low312 FPS283 FPS
medium280 FPS246 FPS
high266 FPS226 FPS
ultra234 FPS197 FPS
League of Legends

League of Legends

PresetCore i7-12700KCore i9-10940X
1080p
low797 FPS692 FPS
medium633 FPS692 FPS
high556 FPS692 FPS
ultra472 FPS692 FPS
1440p
low704 FPS692 FPS
medium565 FPS692 FPS
high490 FPS692 FPS
ultra422 FPS656 FPS
4K
low510 FPS595 FPS
medium425 FPS500 FPS
high381 FPS444 FPS
ultra321 FPS373 FPS
Valorant

Valorant

PresetCore i7-12700KCore i9-10940X
1080p
low859 FPS692 FPS
medium802 FPS692 FPS
high699 FPS692 FPS
ultra628 FPS692 FPS
1440p
low760 FPS692 FPS
medium678 FPS692 FPS
high590 FPS639 FPS
ultra519 FPS560 FPS
4K
low535 FPS580 FPS
medium488 FPS516 FPS
high437 FPS464 FPS
ultra384 FPS408 FPS

Technical Specifications

Side-by-side comparison of Core i7-12700K and Core i9-10940X

Intel

Core i7-12700K

The Core i7-12700K is manufactured by Intel. It was released in 4 November 2021 (4 years ago). It is based on the Alder Lake, Golden Cove, Gracemont (2021) architecture. It features 12 cores and 20 threads. Base frequency is 3.6 GHz, with boost up to 5 GHz. L3 cache: 25 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm process technology. Socket: LGA1700. Thermal design power (TDP): 125 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 34,347 points. Launch price was $409.

Intel

Core i9-10940X

The Core i9-10940X is manufactured by Intel. It was released in 19 October 2019 (6 years ago). It is based on the Cascade Lake-X (2019) architecture. It features 14 cores and 28 threads. Base frequency is 3.3 GHz, with boost up to 4.8 GHz. L3 cache: 19.25 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 165 Watt. Memory support: DDR4-2933. Passmark benchmark score: 27,684 points. Launch price was $299.

Processing Power

The Core i7-12700K packs 12 cores / 20 threads, while the Core i9-10940X offers 14 cores / 28 threads — the Core i9-10940X has 2 more cores. Boost clocks reach 5 GHz on the Core i7-12700K versus 4.8 GHz on the Core i9-10940X — a 4.1% clock advantage for the Core i7-12700K (base: 3.6 GHz vs 3.3 GHz). The Core i7-12700K uses the Alder Lake, Golden Cove, Gracemont (2021) architecture (10 nm), while the Core i9-10940X uses Cascade Lake-X (2019) (14 nm). In PassMark, the Core i7-12700K scores 34,347 against the Core i9-10940X's 27,684 — a 21.5% lead for the Core i7-12700K. L3 cache: 25 MB (total) on the Core i7-12700K vs 19.25 MB (total) on the Core i9-10940X.

FeatureCore i7-12700KCore i9-10940X
Cores / Threads
12 / 20
14 / 28+17%
Boost Clock
5 GHz+4%
4.8 GHz
Base Clock
3.6 GHz+9%
3.3 GHz
L3 Cache
25 MB (total)+30%
19.25 MB (total)
L2 Cache
1.25 MB (per core)+25%
1 MB (per core)
Process
10 nm-29%
14 nm
Architecture
Alder Lake, Golden Cove, Gracemont (2021)
Cascade Lake-X (2019)
PassMark
34,347+24%
27,684
Cinebench R23 Multi
19,000
Geekbench 6 Single
1,450
Geekbench 6 Multi
11,000
🧠

Memory & Platform

The Core i7-12700K uses the LGA1700 socket (PCIe 5.0), while the Core i9-10940X uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 4800 on the Core i7-12700K versus DDR4-2933 on the Core i9-10940X — the Core i7-12700K supports 199.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i9-10940X supports up to 256 GB of RAM compared to 128 66.7% more capacity for professional workloads. Memory channels: 2 (Core i7-12700K) vs 4 (Core i9-10940X). PCIe lanes: 20 (Core i7-12700K) vs 48 (Core i9-10940X) — the Core i9-10940X offers 28 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Z690,B660 (Core i7-12700K) and X299 (Core i9-10940X).

FeatureCore i7-12700KCore i9-10940X
Socket
LGA1700
LGA2066
PCIe Generation
PCIe 5.0+67%
PCIe 3.0
Max RAM Speed
4800+119900%
DDR4-2933
Max RAM Capacity
128
256 GB+209715100%
RAM Channels
2
4+100%
ECC Support
Yes
No
PCIe Lanes
20
48+140%
🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the Core i9-10940X supports AVX-512 instructions — important for machine learning and scientific applications. Both support VT-x, VT-d virtualization. The Core i7-12700K includes integrated graphics (Intel UHD Graphics 770), while the Core i9-10940X requires a dedicated GPU. Primary use case: Core i9-10940X targets High-End Desktop. Direct competitor: Core i7-12700K rivals Ryzen 7 5800X.

FeatureCore i7-12700KCore i9-10940X
Integrated GPU
Yes
No
IGPU Model
Intel UHD Graphics 770
None
Unlocked
Yes
Yes
AVX-512
No
Yes
Virtualization
VT-x, VT-d
VT-x, VT-d
Target Use
High-End Desktop
💰

Value Analysis

The Core i7-12700K launched at $409 MSRP, while the Core i9-10940X debuted at $784. On MSRP ($409 vs $784), the Core i7-12700K is $375 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-12700K delivers 84.0 pts/$ vs 35.3 pts/$ for the Core i9-10940X — making the Core i7-12700K the 81.6% better value option.

FeatureCore i7-12700KCore i9-10940X
MSRP
$409-48%
$784
Performance per Dollar
84.0+138%
35.3
Release Date
2021
2019