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 i7-7800X vs Core i7-9700K 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 i7-7800X vs Core i7-9700K: Pros, Cons & Final Verdict

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

Core i7-7800X

2017

Why buy it

✅Costs $2 less on MSRP ($383 MSRP vs $385 MSRP).
✅75% more PCIe lanes (28 vs 16) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-9700K across 50 shared CPU benchmark tests.
❌Lower PassMark (12,963 vs 14,397).
❌Smaller total L3 cache (8.3 MB vs 12 MB).
❌Lower PassMark per dollar, at 33.8 vs 37.4 PassMark/$ ($383 MSRP vs $385 MSRP).
❌47.4% higher power demand at 140W vs 95W.

Core i7-9700K

2018

Why buy it

✅Better for gaming: +45.1% higher average FPS across 50 shared CPU benchmark tests.
✅+45.5% larger total L3 cache (12 MB vs 8.3 MB).
✅Delivers 10.5% more PassMark for each dollar spent, at 37.4 vs 33.8 PassMark/$ ($385 MSRP vs $383 MSRP).
✅Draws 95W instead of 140W, a 45W reduction.
✅Integrated graphics onboard with UHD Graphics 630, while Core i7-7800X needs a discrete GPU.

Trade-offs

❌
0.5% HIGHER MSRP
$385 MSRPvs$383 MSRP

Quick Answers

So, is Core i7-9700K better than Core i7-7800X?

Yes. Core i7-9700K is the better all-around CPU here. It gives you a 45.1% average FPS lead across 50 shared CPU game tests in our data, 11.1% 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 i7-9700K is the better pick. According to our tests, it delivers 45.1% 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 i7-9700K is the stronger fit. You are getting 11.1% better PassMark, backed by 8 cores and 8 threads. It also has the larger cache pool with 45.5% larger total L3 cache (12 MB vs 8.3 MB).

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

Core i7-9700K is the better buy right now. Core i7-9700K comes in 0.5% more expensive on MSRP at $385 MSRP versus $383 MSRP, and it still gives you a 45.1% average FPS lead across 50 shared CPU game tests in our data. It is also 10.5% better value on MSRP (37.4 vs 33.8 PassMark/$), 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 i7-9700K makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2018 vs 2017), 45.5% larger total L3 cache (12 MB vs 8.3 MB), and more multi-core headroom with 8 cores / 8 threads instead of 6/12. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i7-7800X vs Core i7-9700K Technical Specifications

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

Core i7-7800X

The Core i7-7800X 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 6 cores and 12 threads. Base frequency is 3.5 GHz, with boost up to 4 GHz. L3 cache: 8.25 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 140 Watt. Memory support: DDR4-2400. Passmark benchmark score: 12,963 points. Launch price was $383.

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.

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Processing Power

The Core i7-7800X packs 6 cores / 12 threads, while the Core i7-9700K offers 8 cores / 8 threads — the Core i7-9700K has 2 more cores. Boost clocks reach 4 GHz on the Core i7-7800X versus 4.9 GHz on the Core i7-9700K — a 20.2% clock advantage for the Core i7-9700K (base: 3.5 GHz vs 3.6 GHz). The Core i7-7800X uses the Skylake (server) (2017−2018) architecture (14 nm), while the Core i7-9700K uses Coffee Lake-R (2018−2019) (14 nm). In PassMark, the Core i7-7800X scores 12,963 against the Core i7-9700K's 14,397 — a 10.5% lead for the Core i7-9700K. L3 cache: 8.25 MB (total) on the Core i7-7800X vs 12 MB (total) on the Core i7-9700K.

Feature	Core i7-7800X	Core i7-9700K
Cores / Threads	6 / 12	8 / 8+33%
Boost Clock	4 GHz	4.9 GHz+23%
Base Clock	3.5 GHz	3.6 GHz+3%
L3 Cache	8.25 MB (total)	12 MB (total)+45%
L2 Cache	1 MB (per core)	256K (per core)+25500%
Process	14 nm	14 nm
Architecture	Skylake (server) (2017−2018)	Coffee Lake-R (2018−2019)
PassMark	12,963	14,397+11%
Cinebench R23 Multi	6,897	—
Geekbench 6 Single	1,114	—
Geekbench 6 Multi	6,951	—

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Memory & Platform

The Core i7-7800X uses the LGA2066 socket (PCIe 3.0), while the Core i7-9700K uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2400 on the Core i7-7800X versus DDR4-2666 on the Core i7-9700K — the Core i7-9700K supports 11.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 128 GB of RAM. Memory channels: 4 (Core i7-7800X) vs 2 (Core i7-9700K). PCIe lanes: 28 (Core i7-7800X) vs 16 (Core i7-9700K) — the Core i7-7800X offers 12 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X299 (Core i7-7800X) and Intel 300 series (Core i7-9700K).

Feature	Core i7-7800X	Core i7-9700K
Socket	LGA2066	LGA1151
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR4-2400	DDR4-2666+11%
Max RAM Capacity	128 GB	128 GB
RAM Channels	4+100%	2
ECC Support	No	No
PCIe Lanes	28+75%	16

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Advanced Features

Only the Core i7-7800X supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: Yes (Core i7-7800X) vs VT-x, VT-d (Core i7-9700K). The Core i7-9700K includes integrated graphics (UHD Graphics 630), while the Core i7-7800X requires a dedicated GPU. Primary use case: Core i7-9700K targets Desktop.

Feature	Core i7-7800X	Core i7-9700K
Integrated GPU	No	Yes
IGPU Model	—	UHD Graphics 630
Unlocked	—	Yes
AVX-512	Yes	No
Virtualization	Yes	VT-x, VT-d
Target Use	—	Desktop

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Value Analysis

At launch, the Core i7-7800X was priced at $383, while the Core i7-9700K came in at $385. On launch pricing ($383 vs $385), Core i7-7800X was $2 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-7800X delivers 33.8 pts/$ vs 37.4 pts/$ for the Core i7-9700K — making the Core i7-9700K the 10% better value option.

Feature	Core i7-7800X	Core i7-9700K
MSRP	$383	$385
Performance per Dollar	33.8	37.4+11%
Release Date	2017	2018

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