Core i7-9700K vs Ryzen 5 7645HX

CPU

GPU

Core i7-9700K

8 Cores8 Thrd95 WWMax: 4.9 GHz2018

Similar parts

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Ryzen 5 7645HX

6 Cores12 Thrd45 WWMax: 5 GHz2023

Ryzen family

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Core i7-9700K vs Ryzen 5 7645HX Performance Spectrum

Core i7-9700K

8 / 8

14,397

0.0%

26,097

+81.3%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper 3990X

Ryzen Threadripper 9960X

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.

Core i7-9700K vs Ryzen 5 7645HX 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 i7-9700K vs Ryzen 5 7645HX: Pros, Cons & Final Verdict

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

Core i7-9700K

2018

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 5 7645HX across 50 shared CPU benchmark tests.
❌Lower PassMark (14,397 vs 26,097).
❌Smaller total L3 cache (12 MB vs 32 MB).
❌Launch MSRP is still $385 MSRP, while Ryzen 5 7645HX mostly shows up through inconsistent older-market listings.
❌111.1% higher power demand at 95W vs 45W.

Ryzen 5 7645HX

2023

Why buy it

✅Better for gaming: +8.3% higher average FPS across 50 shared CPU benchmark tests.
✅+166.7% larger total L3 cache (32 MB vs 12 MB).
✅Draws 45W instead of 95W, a 50W reduction.
✅Newer platform on FL1 with DDR5 support instead of LGA1151 and DDR4.
✅75% more PCIe lanes (28 vs 16) for storage and expansion-heavy builds.

Trade-offs

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

Quick Answers

So, is Ryzen 5 7645HX better than Core i7-9700K?

Yes. Ryzen 5 7645HX is the better all-around CPU here. It gives you a 8.3% average FPS lead across 50 shared CPU game tests in our data, 81.3% 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, Ryzen 5 7645HX is the better pick. According to our tests, it delivers 8.3% 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, Ryzen 5 7645HX is the stronger fit. You are getting 81.3% better PassMark, backed by 6 cores and 12 threads. It also has the larger cache pool with 166.7% larger total L3 cache (32 MB vs 12 MB).

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

Ryzen 5 7645HX is still the much better call for a fresh build. Ryzen 5 7645HX comes in at an unclear MSRP at unclear MSRP versus $385 MSRP, and it still gives you a 8.3% average FPS lead across 50 shared CPU game tests in our data. Core i7-9700K only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2018 platform. Even with 100.0% better value on paper (37.4 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA1151.

Which one is more future-proof for 2026 and beyond?

Ryzen 5 7645HX makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2018), a healthier platform with FL1 and DDR5 instead of LGA1151, 166.7% larger total L3 cache (32 MB vs 12 MB), and more multi-core headroom with 6 cores / 12 threads instead of 8/8. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i7-9700K vs Ryzen 5 7645HX Technical Specifications

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

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.

Ryzen 5 7645HX

The Ryzen 5 7645HX is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Dragon Range (Zen4) (2023) architecture. It features 6 cores and 12 threads. Base frequency is 4 GHz, with boost up to 5 GHz. L3 cache: 32 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: FL1. Thermal design power (TDP): 45 Watt. Memory support: DDR5-5200. Passmark benchmark score: 26,097 points. Launch price was $299.

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Processing Power

The Core i7-9700K packs 8 cores / 8 threads, while the Ryzen 5 7645HX offers 6 cores / 12 threads — the Core i7-9700K has 2 more cores. Boost clocks reach 4.9 GHz on the Core i7-9700K versus 5 GHz on the Ryzen 5 7645HX — a 2% clock advantage for the Ryzen 5 7645HX (base: 3.6 GHz vs 4 GHz). The Core i7-9700K uses the Coffee Lake-R (2018−2019) architecture (14 nm), while the Ryzen 5 7645HX uses Dragon Range (Zen4) (2023) (5 nm). In PassMark, the Core i7-9700K scores 14,397 against the Ryzen 5 7645HX's 26,097 — a 57.8% lead for the Ryzen 5 7645HX. L3 cache: 12 MB (total) on the Core i7-9700K vs 32 MB (total) on the Ryzen 5 7645HX.

Feature	Core i7-9700K	Ryzen 5 7645HX
Cores / Threads	8 / 8+33%	6 / 12
Boost Clock	4.9 GHz	5 GHz+2%
Base Clock	3.6 GHz	4 GHz+11%
L3 Cache	12 MB (total)	32 MB (total)+167%
L2 Cache	256K (per core)+25500%	1 MB (per core)
Process	14 nm	5 nm-64%
Architecture	Coffee Lake-R (2018−2019)	Dragon Range (Zen4) (2023)
PassMark	14,397	26,097+81%
Cinebench R23 Multi	—	13,985
Geekbench 6 Single	—	2,588
Geekbench 6 Multi	—	11,717

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Memory & Platform

The Core i7-9700K uses the LGA1151 socket (PCIe 3.0), while the Ryzen 5 7645HX uses FL1 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Core i7-9700K versus DDR5-5200 on the Ryzen 5 7645HX — the Ryzen 5 7645HX supports 95% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i7-9700K supports up to 128 GB of RAM compared to 64 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i7-9700K) vs 28 (Ryzen 5 7645HX) — the Ryzen 5 7645HX offers 12 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel 300 series (Core i7-9700K) and SoC (Ryzen 5 7645HX).

Feature	Core i7-9700K	Ryzen 5 7645HX
Socket	LGA1151	FL1
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	DDR4-2666	DDR5-5200+95%
Max RAM Capacity	128 GB+100%	64 GB
RAM Channels	2	2
ECC Support	No	No
PCIe Lanes	16	28+75%

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Advanced Features

Only the Core i7-9700K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Ryzen 5 7645HX supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Core i7-9700K) vs AMD-V (SVM) (Ryzen 5 7645HX). Both include integrated graphics — UHD Graphics 630 (Core i7-9700K) and Radeon 610M (Ryzen 5 7645HX) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i7-9700K targets Desktop, Ryzen 5 7645HX targets Gaming. Direct competitor: Ryzen 5 7645HX rivals Core i5-13500HX.