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 i7-7820X

2017

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-12700K across 50 shared CPU benchmark tests.
❌Lower PassMark (17,171 vs 34,347).
❌Smaller total L3 cache (11 MB vs 25 MB).
❌Lower PassMark per dollar, at 28.7 vs 84.0 PassMark/$ ($599 MSRP vs $409 MSRP).
❌Older platform position on LGA2066 with DDR4, while Core i7-12700K moves to LGA1700 and DDR5.

Core i7-12700K

2021

Why buy it

✅Better for gaming: +20.3% higher average FPS across 50 shared CPU benchmark tests.
✅+127.3% larger total L3 cache (25 MB vs 11 MB).
✅Costs $190 less on MSRP ($409 MSRP vs $599 MSRP).
✅Delivers 193.0% more PassMark for each dollar spent, at 84.0 vs 28.7 PassMark/$ ($409 MSRP vs $599 MSRP).
✅Draws 125W instead of 140W, a 15W reduction.

Trade-offs

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

Core i7-7820X

2017

Core i7-12700K

2021

Why buy it

✅Better for gaming: +20.3% higher average FPS across 50 shared CPU benchmark tests.
✅+127.3% larger total L3 cache (25 MB vs 11 MB).
✅Costs $190 less on MSRP ($409 MSRP vs $599 MSRP).
✅Delivers 193.0% more PassMark for each dollar spent, at 84.0 vs 28.7 PassMark/$ ($409 MSRP vs $599 MSRP).
✅Draws 125W instead of 140W, a 15W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-12700K across 50 shared CPU benchmark tests.
❌Lower PassMark (17,171 vs 34,347).
❌Smaller total L3 cache (11 MB vs 25 MB).
❌Lower PassMark per dollar, at 28.7 vs 84.0 PassMark/$ ($599 MSRP vs $409 MSRP).
❌Older platform position on LGA2066 with DDR4, while Core i7-12700K moves to LGA1700 and DDR5.

Trade-offs

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

Quick Answers

So, is Core i7-12700K better than Core i7-7820X?

Yes. Core i7-12700K is the better overall CPU here. You are getting a 20.3% average FPS lead across 50 shared CPU game tests in our data, 100% 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 20.3% 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 100% better PassMark, backed by 12 cores and 20 threads. It also carries the larger cache pool with 127.3% larger total L3 cache (25 MB vs 11 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 $190 cheaper on MSRP at $409 MSRP versus $599 MSRP, and it gives you a 20.3% average FPS lead across 50 shared CPU game tests in our data. It is also 193.0% better value on MSRP (84.0 vs 28.7 PassMark/$), 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 2017), a healthier platform with LGA1700 and DDR5 instead of LGA2066, 127.3% larger total L3 cache (25 MB vs 11 MB), and more multi-core headroom with 12 cores / 20 threads instead of 8/16. 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.

Core i7-7820X Benchmark Check

Core i7-12700K Benchmark Check

Path of Exile 2

Preset	Core i7-7820X	Core i7-12700K
1080p
low	208 FPS	314 FPS
medium	165 FPS	295 FPS
high	132 FPS	246 FPS
ultra	100 FPS	193 FPS
1440p
low	174 FPS	269 FPS
medium	136 FPS	225 FPS
high	109 FPS	182 FPS
ultra	83 FPS	145 FPS
4K
low	88 FPS	170 FPS
medium	74 FPS	142 FPS
high	59 FPS	109 FPS
ultra	45 FPS	96 FPS

Open Core i7-7820X Open Core i7-12700K

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i7-7820X	Core i7-12700K
1080p
low	368 FPS	630 FPS
medium	297 FPS	533 FPS
high	265 FPS	450 FPS
ultra	233 FPS	410 FPS
1440p
low	327 FPS	536 FPS
medium	270 FPS	475 FPS
high	242 FPS	403 FPS
ultra	209 FPS	349 FPS
4K
low	257 FPS	312 FPS
medium	216 FPS	280 FPS
high	199 FPS	266 FPS
ultra	170 FPS	234 FPS

Open Core i7-7820X Open Core i7-12700K

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i7-7820X	Core i7-12700K
1080p
low	429 FPS	797 FPS
medium	429 FPS	633 FPS
high	429 FPS	556 FPS
ultra	429 FPS	472 FPS
1440p
low	429 FPS	704 FPS
medium	429 FPS	565 FPS
high	429 FPS	490 FPS
ultra	429 FPS	422 FPS
4K
low	429 FPS	510 FPS
medium	405 FPS	425 FPS
high	364 FPS	381 FPS
ultra	292 FPS	321 FPS

Open Core i7-7820X Open Core i7-12700K

League of Legends

League of Legends

Valorant

Preset	Core i7-7820X	Core i7-12700K
1080p
low	429 FPS	859 FPS
medium	429 FPS	802 FPS
high	429 FPS	699 FPS
ultra	429 FPS	628 FPS
1440p
low	429 FPS	760 FPS
medium	429 FPS	678 FPS
high	429 FPS	590 FPS
ultra	429 FPS	519 FPS
4K
low	429 FPS	535 FPS
medium	429 FPS	488 FPS
high	429 FPS	437 FPS
ultra	429 FPS	384 FPS

Open Core i7-7820X Open Core i7-12700K

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i7-7820X and Core i7-12700K

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.

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.

⚡

Processing Power

The Core i7-7820X packs 8 cores / 16 threads, while the Core i7-12700K offers 12 cores / 20 threads — the Core i7-12700K has 4 more cores. Boost clocks reach 4.5 GHz on the Core i7-7820X versus 5 GHz on the Core i7-12700K — a 10.5% clock advantage for the Core i7-12700K (base: 3.6 GHz vs 3.6 GHz). The Core i7-7820X uses the Skylake (server) (2017−2018) architecture (14 nm), while the Core i7-12700K uses Alder Lake, Golden Cove, Gracemont (2021) (10 nm). In PassMark, the Core i7-7820X scores 17,171 against the Core i7-12700K's 34,347 — a 66.7% lead for the Core i7-12700K. L3 cache: 11 MB (total) on the Core i7-7820X vs 25 MB (total) on the Core i7-12700K.

Feature	Core i7-7820X	Core i7-12700K
Cores / Threads	8 / 16	12 / 20+50%
Boost Clock	4.5 GHz	5 GHz+11%
Base Clock	3.6 GHz	3.6 GHz
L3 Cache	11 MB (total)	25 MB (total)+127%
L2 Cache	1 MB (per core)	1.25 MB (per core)+25%
Process	14 nm	10 nm-29%
Architecture	Skylake (server) (2017−2018)	Alder Lake, Golden Cove, Gracemont (2021)
PassMark	17,171	34,347+100%

🧠

Memory & Platform

The Core i7-7820X uses the LGA2066 socket (PCIe 3.0), while the Core i7-12700K uses LGA1700 (PCIe 5.0) — making them incompatible on the same motherboard.

Feature	Core i7-7820X	Core i7-12700K
Socket	LGA2066	LGA1700
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	—	4800
Max RAM Capacity	—	128
RAM Channels	—	2
ECC Support	—	Yes
PCIe Lanes	—	20

🔧

Advanced Features

Virtualization: not specified (Core i7-7820X) / VT-x, VT-d (Core i7-12700K). The Core i7-12700K includes integrated graphics (Intel UHD Graphics 770), while the Core i7-7820X requires a dedicated GPU. Direct competitor: Core i7-12700K rivals Ryzen 7 5800X.

Feature	Core i7-7820X	Core i7-12700K
Integrated GPU	—	Yes
IGPU Model	—	Intel UHD Graphics 770
Unlocked	—	Yes
AVX-512	—	No
Virtualization	—	VT-x, VT-d

💰

Value Analysis

The Core i7-7820X launched at $599 MSRP, while the Core i7-12700K debuted at $409. On MSRP ($599 vs $409), the Core i7-12700K is $190 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-7820X delivers 28.7 pts/$ vs 84.0 pts/$ for the Core i7-12700K — making the Core i7-12700K the 98.2% better value option.