Core i9-10920X vs Ryzen 5 7645HX

CPU

GPU

Core i9-10920X

12 Cores24 Thrd165 WWMax: 4.8 GHz2019

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Ryzen 5 7645HX

6 Cores12 Thrd45 WWMax: 5 GHz2023

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Core i9-10920X vs Ryzen 5 7645HX Performance Spectrum

Core i9-10920X

12 / 24

25,875

0.0%

26,097

+0.9%

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 i9-10920X 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 i9-10920X 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 i9-10920X

2019

Why buy it

✅+10.5% higher Cinebench R23 multi-core.
✅57.1% more PCIe lanes (44 vs 28) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 5 7645HX across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (19 MB vs 32 MB).
❌Launch MSRP is still $689 MSRP, while Ryzen 5 7645HX mostly shows up through inconsistent older-market listings.
❌266.7% higher power demand at 165W vs 45W.
❌Older platform position on LGA2066 with DDR4, while Ryzen 5 7645HX moves to FL1 and DDR5.

Ryzen 5 7645HX

2023

Why buy it

✅Better for gaming: +4.0% higher average FPS across 50 shared CPU benchmark tests.
✅+66.2% larger total L3 cache (32 MB vs 19 MB).
✅Draws 45W instead of 165W, a 120W reduction.
✅Newer platform on FL1 with DDR5 support instead of LGA2066 and DDR4.
✅Integrated graphics onboard with Radeon 610M, while Core i9-10920X needs a discrete GPU.

Trade-offs

❌Lower Cinebench R23 multi-core (13,985 vs 15,458).

Quick Answers

So, is Ryzen 5 7645HX better than Core i9-10920X?

It depends on what you want from the system. For gaming, Ryzen 5 7645HX is ahead with a 4.0% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Core i9-10920X pulls ahead with 10.5% better Cinebench R23 multi-core. Ryzen 5 7645HX also has the bigger cache pool with 66.2% larger total L3 cache (32 MB vs 19 MB).

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Core i9-10920X is the stronger fit. You are getting 10.5% better Cinebench R23 multi-core, backed by 12 cores and 24 threads.

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

Ryzen 5 7645HX is still the faster CPU overall, but Core i9-10920X is easier to justify if budget matters more than peak performance. Ryzen 5 7645HX comes in at an unclear MSRP at unclear MSRP versus $689 MSRP, and it still gives you a 4.0% average FPS lead across 50 shared CPU game tests in our data. The compromise is that Core i9-10920X is still stronger for heavier multi-core work with 10.5% better Cinebench R23 multi-core. Core i9-10920X is also 100.0% better value on MSRP (37.6 vs 0.0 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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 2019), a healthier platform with FL1 and DDR5 instead of LGA2066, and 66.2% larger total L3 cache (32 MB vs 19 MB). That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i9-10920X vs Ryzen 5 7645HX Technical Specifications

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

Core i9-10920X

The Core i9-10920X 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 12 cores and 24 threads. Base frequency is 3.5 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: 25,875 points. Launch price was $299.

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.

⚡

Processing Power

The Core i9-10920X packs 12 cores / 24 threads, while the Ryzen 5 7645HX offers 6 cores / 12 threads — the Core i9-10920X has 6 more cores. Boost clocks reach 4.8 GHz on the Core i9-10920X versus 5 GHz on the Ryzen 5 7645HX — a 4.1% clock advantage for the Ryzen 5 7645HX (base: 3.5 GHz vs 4 GHz). The Core i9-10920X uses the Cascade Lake-X (2019) architecture (14 nm), while the Ryzen 5 7645HX uses Dragon Range (Zen4) (2023) (5 nm). In PassMark, the Core i9-10920X scores 25,875 against the Ryzen 5 7645HX's 26,097 — a 0.9% lead for the Ryzen 5 7645HX. Cinebench R23 multi-core: 15,458 vs 13,985 (10% advantage for the Core i9-10920X). Geekbench 6 single-core — the metric most relevant to gaming — records 1,250 vs 2,588, a 69.7% lead for the Ryzen 5 7645HX that directly translates to higher frame rates. Multi-core Geekbench: 12,000 vs 11,717 (2.4% advantage for the Core i9-10920X). L3 cache: 19.25 MB (total) on the Core i9-10920X vs 32 MB (total) on the Ryzen 5 7645HX.

Feature	Core i9-10920X	Ryzen 5 7645HX
Cores / Threads	12 / 24+100%	6 / 12
Boost Clock	4.8 GHz	5 GHz+4%
Base Clock	3.5 GHz	4 GHz+14%
L3 Cache	19.25 MB (total)	32 MB (total)+66%
L2 Cache	1 MB (per core)	1 MB (per core)
Process	14 nm	5 nm-64%
Architecture	Cascade Lake-X (2019)	Dragon Range (Zen4) (2023)
PassMark	25,875	26,097
Cinebench R23 Multi	15,458+11%	13,985
Geekbench 6 Single	1,250	2,588+107%
Geekbench 6 Multi	12,000+2%	11,717

🧠

Memory & Platform

The Core i9-10920X uses the LGA2066 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 DDR4-2933 on the Core i9-10920X versus DDR5-5200 on the Ryzen 5 7645HX — the Ryzen 5 7645HX supports 77.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i9-10920X supports up to 256 GB of RAM compared to 64 GB — 300% more capacity for professional workloads. Memory channels: 4 (Core i9-10920X) vs 2 (Ryzen 5 7645HX). PCIe lanes: 44 (Core i9-10920X) vs 28 (Ryzen 5 7645HX) — the Core i9-10920X offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X299 (Core i9-10920X) and SoC (Ryzen 5 7645HX).

Feature	Core i9-10920X	Ryzen 5 7645HX
Socket	LGA2066	FL1
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	DDR4-2933	DDR5-5200+77%
Max RAM Capacity	256 GB+300%	64 GB
RAM Channels	4+100%	2
ECC Support	No	No
PCIe Lanes	44+57%	28

🔧

Advanced Features

Only the Core i9-10920X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: VT-x, VT-d, EPT (Core i9-10920X) vs AMD-V (SVM) (Ryzen 5 7645HX). The Ryzen 5 7645HX includes integrated graphics (Radeon 610M), while the Core i9-10920X requires a dedicated GPU. Primary use case: Core i9-10920X targets HEDT/Workstation, Ryzen 5 7645HX targets Gaming. Direct competitor: Ryzen 5 7645HX rivals Core i5-13500HX.