Core i7-9700K vs Core i9-7920X

Intel

Core i7-9700K

8 Cores8 Thrd95 WWMax: 4.9 GHz2018

Popular choices:

VS
Intel

Core i9-7920X

12 Cores24 Thrd140 WWMax: 4.4 GHz2017

Popular choices:

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 i7-9700K

2018

Why buy it

  • Costs $814 less on MSRP ($385 MSRP vs $1,199 MSRP).
  • Delivers 90.7% more PassMark for each dollar spent, at 37.4 vs 19.6 PassMark/$ ($385 MSRP vs $1,199 MSRP).
  • Draws 95W instead of 140W, a 45W reduction.
  • 100+% more PCIe lanes (16 vs 0) for storage and expansion-heavy builds.
  • Integrated graphics onboard with UHD Graphics 630, while Core i9-7920X needs a discrete GPU.

Trade-offs

  • Worse for gaming: lower average FPS than Core i9-7920X across 4 shared CPU benchmark tests.
  • Lower PassMark (14,397 vs 23,508).
  • Smaller total L3 cache (12 MB vs 17 MB).

Core i9-7920X

2017

Why buy it

  • Better for gaming: +11.4% higher average FPS across 4 shared CPU benchmark tests.
  • +37.5% larger total L3 cache (17 MB vs 12 MB).

Trade-offs

  • Lower PassMark per dollar, at 19.6 vs 37.4 PassMark/$ ($1,199 MSRP vs $385 MSRP).
  • 47.4% higher power demand at 140W vs 95W.
  • No integrated graphics, while Core i7-9700K can still boot and troubleshoot without a discrete GPU.

Quick Answers

So, is Core i9-7920X better than Core i7-9700K?
Yes. Core i9-7920X is the better overall CPU here. You are getting a 11.4% average FPS lead across 4 shared CPU game tests in our data and 63.3% better PassMark, which makes it the stronger all-around choice.
Which one is better for gaming?
If gaming is the priority, Core i9-7920X is the better pick here. According to our tests, it delivers 11.4% more average FPS across 4 shared CPU game tests.
Which one is better for streaming, content creation, and heavy multitasking?
For streaming, content creation, and heavier multitasking, Core i9-7920X is the better fit. You are getting 63.3% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 37.5% larger total L3 cache (17 MB vs 12 MB).
Which one is the smarter buy today, not just the cheaper CPU?
Core i9-7920X is the smarter buy by a wide margin for a fresh build. Core i9-7920X is 211.4% more expensive on MSRP at $1,199 MSRP versus $385 MSRP, and it gives you a 11.4% average FPS lead across 4 shared CPU game tests in our data. Core i7-9700K only looks stronger on raw value math because it is extremely cheap, but that is mostly used-market pricing on an obsolete 2018 platform. Even with 90.7% better value on paper (37.4 vs 19.6 PassMark/$), it really only makes sense as a very cheap stopgap or a niche existing-platform option for someone already on LGA1151.
Which one is more future-proof for 2026 and beyond?
Core i7-9700K is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2018 vs 2017). That makes it the safer long-term pick.

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 i7-9700KCore i9-7920X
1080p
low308 FPS163 FPS
medium278 FPS142 FPS
high231 FPS113 FPS
ultra182 FPS96 FPS
1440p
low270 FPS140 FPS
medium221 FPS119 FPS
high178 FPS94 FPS
ultra143 FPS79 FPS
4K
low170 FPS76 FPS
medium140 FPS70 FPS
high108 FPS55 FPS
ultra95 FPS43 FPS
Counter-Strike 2

Counter-Strike 2

PresetCore i7-9700KCore i9-7920X
1080p
low360 FPS352 FPS
medium321 FPS300 FPS
high291 FPS274 FPS
ultra259 FPS243 FPS
1440p
low324 FPS315 FPS
medium282 FPS274 FPS
high258 FPS249 FPS
ultra225 FPS215 FPS
4K
low249 FPS227 FPS
medium221 FPS201 FPS
high208 FPS191 FPS
ultra179 FPS162 FPS
League of Legends

League of Legends

PresetCore i7-9700KCore i9-7920X
1080p
low360 FPS560 FPS
medium360 FPS468 FPS
high360 FPS420 FPS
ultra360 FPS366 FPS
1440p
low360 FPS507 FPS
medium360 FPS431 FPS
high360 FPS385 FPS
ultra360 FPS334 FPS
4K
low360 FPS390 FPS
medium360 FPS322 FPS
high360 FPS284 FPS
ultra318 FPS231 FPS
Valorant

Valorant

PresetCore i7-9700KCore i9-7920X
1080p
low360 FPS588 FPS
medium360 FPS588 FPS
high360 FPS588 FPS
ultra360 FPS588 FPS
1440p
low360 FPS588 FPS
medium360 FPS588 FPS
high360 FPS579 FPS
ultra360 FPS502 FPS
4K
low360 FPS531 FPS
medium360 FPS480 FPS
high360 FPS424 FPS
ultra360 FPS366 FPS

Technical Specifications

Side-by-side comparison of Core i7-9700K and Core i9-7920X

Intel

Core i7-9700K

The Core i7-9700K is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Coffee Lake-R (2018−2019) architecture. It features 8 cores and 8 threads. Base frequency is 3.6 GHz, with boost up to 4.9 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 95 Watt. Memory support: DDR4. Passmark benchmark score: 14,397 points. Launch price was $374.

Intel

Core i9-7920X

The Core i9-7920X is manufactured by Intel. It was released in 10 September 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 12 cores and 24 threads. Base frequency is 2.9 GHz, with boost up to 4.4 GHz. L3 cache: 16.5 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: 23,508 points. Launch price was $1,199.

Processing Power

The Core i7-9700K packs 8 cores / 8 threads, while the Core i9-7920X offers 12 cores / 24 threads — the Core i9-7920X has 4 more cores. Boost clocks reach 4.9 GHz on the Core i7-9700K versus 4.4 GHz on the Core i9-7920X — a 10.8% clock advantage for the Core i7-9700K (base: 3.6 GHz vs 2.9 GHz). The Core i7-9700K uses the Coffee Lake-R (2018−2019) architecture (14 nm), while the Core i9-7920X uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Core i7-9700K scores 14,397 against the Core i9-7920X's 23,508 — a 48.1% lead for the Core i9-7920X. L3 cache: 12 MB (total) on the Core i7-9700K vs 16.5 MB (total) on the Core i9-7920X.

FeatureCore i7-9700KCore i9-7920X
Cores / Threads
8 / 8
12 / 24+50%
Boost Clock
4.9 GHz+11%
4.4 GHz
Base Clock
3.6 GHz+24%
2.9 GHz
L3 Cache
12 MB (total)
16.5 MB (total)+38%
L2 Cache
256K (per core)
1 MB (per core)+300%
Process
14 nm
14 nm
Architecture
Coffee Lake-R (2018−2019)
Skylake (server) (2017−2018)
PassMark
14,397
23,508+63%
🧠

Memory & Platform

The Core i7-9700K uses the LGA1151 socket (PCIe 3.0), while the Core i9-7920X uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard.

FeatureCore i7-9700KCore i9-7920X
Socket
LGA1151
LGA2066
PCIe Generation
PCIe 3.0
PCIe 3.0
Max RAM Speed
DDR4-2666
Max RAM Capacity
128 GB
RAM Channels
2
ECC Support
No
PCIe Lanes
16
🔧

Advanced Features

Virtualization: VT-x, VT-d (Core i7-9700K) / not specified (Core i9-7920X). The Core i7-9700K includes integrated graphics (UHD Graphics 630), while the Core i9-7920X requires a dedicated GPU. Primary use case: Core i7-9700K targets Desktop.

FeatureCore i7-9700KCore i9-7920X
Integrated GPU
Yes
IGPU Model
UHD Graphics 630
Unlocked
Yes
AVX-512
No
Virtualization
VT-x, VT-d
Target Use
Desktop
💰

Value Analysis

The Core i7-9700K launched at $385 MSRP, while the Core i9-7920X debuted at $1199. On MSRP ($385 vs $1199), the Core i7-9700K is $814 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-9700K delivers 37.4 pts/$ vs 19.6 pts/$ for the Core i9-7920X — making the Core i7-9700K the 62.4% better value option.

FeatureCore i7-9700KCore i9-7920X
MSRP
$385-68%
$1199
Performance per Dollar
37.4+91%
19.6
Release Date
2018
2017