Core i5-7640X vs Ryzen 7 5800X

CPU

GPU

Core i5-7640X

4 Cores4 Thrd112 WWMax: 4.2 GHz2017

Similar parts

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Ryzen 7 5800X

8 Cores16 Thrd105 WWMax: 4.7 GHz2020

Ryzen family

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Core i5-7640X vs Ryzen 7 5800X Performance Spectrum

Core i5-7640X

4 / 4

7,060

0.0%

27,712

+292.5%

Ryzen Threadripper 3990X

Ryzen Threadripper PRO 9965WX

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 i5-7640X vs Ryzen 7 5800X 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 i5-7640X vs Ryzen 7 5800X: Pros, Cons & Final Verdict

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

Core i5-7640X

2017

Why buy it

✅Costs $200 less on MSRP ($249 MSRP vs $449 MSRP).

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 5800X across 50 shared CPU benchmark tests.
❌Lower PassMark (7,060 vs 27,712).
❌Smaller total L3 cache (6 MB vs 32 MB).
❌Lower PassMark per dollar, at 28.4 vs 61.7 PassMark/$ ($249 MSRP vs $449 MSRP).

Ryzen 7 5800X

2020

Why buy it

✅Better for gaming: +95.6% higher average FPS across 50 shared CPU benchmark tests.
✅+433.3% larger total L3 cache (32 MB vs 6 MB).
✅Delivers 117.7% more PassMark for each dollar spent, at 61.7 vs 28.4 PassMark/$ ($449 MSRP vs $249 MSRP).
✅Draws 105W instead of 112W, a 7W reduction.
✅50% more PCIe lanes (24 vs 16) for storage and expansion-heavy builds.

Trade-offs

❌
80.3% HIGHER MSRP
$449 MSRPvs$249 MSRP

Quick Answers

So, is Ryzen 7 5800X better than Core i5-7640X?

Yes. Ryzen 7 5800X is the better all-around CPU here. It gives you a 95.6% average FPS lead across 50 shared CPU game tests in our data, 292.5% 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 7 5800X is the better pick. According to our tests, it delivers 95.6% 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 7 5800X is the stronger fit. You are getting 292.5% better PassMark, backed by 8 cores and 16 threads. It also has the larger cache pool with 433.3% larger total L3 cache (32 MB vs 6 MB).

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

Ryzen 7 5800X is the better buy right now. Ryzen 7 5800X comes in 80.3% more expensive on MSRP at $449 MSRP versus $249 MSRP, and it still gives you a 95.6% average FPS lead across 50 shared CPU game tests in our data. It is also 117.7% better value on MSRP (61.7 vs 28.4 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Ryzen 7 5800X makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2017), 433.3% larger total L3 cache (32 MB vs 6 MB), and more multi-core headroom with 8 cores / 16 threads instead of 4/4. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i5-7640X vs Ryzen 7 5800X Technical Specifications

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

Core i5-7640X

The Core i5-7640X is manufactured by Intel. It was released in 26 June 2017 (8 years ago). It is based on the Kaby Lake-X (2017) architecture. It features 4 cores and 4 threads. Base frequency is 4 GHz, with boost up to 4.2 GHz. L3 cache: 6 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 112 Watt. Memory support: DDR4-2666. Passmark benchmark score: 7,060 points. Launch price was $242.

Ryzen 7 5800X

The Ryzen 7 5800X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 4.7 GHz. L3 cache: 32 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4. Passmark benchmark score: 27,712 points. Launch price was $449.

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Processing Power

The Core i5-7640X packs 4 cores / 4 threads, while the Ryzen 7 5800X offers 8 cores / 16 threads — the Ryzen 7 5800X has 4 more cores. Boost clocks reach 4.2 GHz on the Core i5-7640X versus 4.7 GHz on the Ryzen 7 5800X — a 11.2% clock advantage for the Ryzen 7 5800X (base: 4 GHz vs 3.8 GHz). The Core i5-7640X uses the Kaby Lake-X (2017) architecture (14 nm), while the Ryzen 7 5800X uses Vermeer (Zen 3) (2020−2022) (7 nm, 12 nm). In PassMark, the Core i5-7640X scores 7,060 against the Ryzen 7 5800X's 27,712 — a 118.8% lead for the Ryzen 7 5800X. L3 cache: 6 MB (total) on the Core i5-7640X vs 32 MB on the Ryzen 7 5800X.

Feature	Core i5-7640X	Ryzen 7 5800X
Cores / Threads	4 / 4	8 / 16+100%
Boost Clock	4.2 GHz	4.7 GHz+12%
Base Clock	4 GHz+5%	3.8 GHz
L3 Cache	6 MB (total)	32 MB+433%
L2 Cache	256K (per core)	512K (per core)+100%
Process	14 nm	7 nm, 12 nm-50%
Architecture	Kaby Lake-X (2017)	Vermeer (Zen 3) (2020−2022)
PassMark	7,060	27,712+293%
Cinebench R23 Multi	3,726	—
Geekbench 6 Single	1,419	—
Geekbench 6 Multi	3,726	—

🧠

Memory & Platform

The Core i5-7640X uses the LGA2066 socket (PCIe 3.0), while the Ryzen 7 5800X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Core i5-7640X versus DDR4-3200 on the Ryzen 7 5800X — the Ryzen 7 5800X supports 20% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 5800X 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 i5-7640X) vs 24 (Ryzen 7 5800X) — the Ryzen 7 5800X offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X299 (Core i5-7640X) and AMD 500 series,AMD 400 series,AMD 300 series (Ryzen 7 5800X).

Feature	Core i5-7640X	Ryzen 7 5800X
Socket	LGA2066	AM4
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	DDR4-2666	DDR4-3200+20%
Max RAM Capacity	64 GB	128 GB+100%
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	16	24+50%

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Advanced Features

Both processors feature an unlocked multiplier for overclocking. Virtualization support: Yes (Core i5-7640X) vs AMD-V (Ryzen 7 5800X). Primary use case: Core i5-7640X targets Desktop, Ryzen 7 5800X targets Desktop.

Feature	Core i5-7640X	Ryzen 7 5800X
Integrated GPU	No	No
Unlocked	Yes	Yes
AVX-512	No	No
Virtualization	Yes	AMD-V
Target Use	Desktop	Desktop

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Value Analysis

At launch, the Core i5-7640X was priced at $249, while the Ryzen 7 5800X came in at $449. On launch pricing ($249 vs $449), Core i5-7640X was $200 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-7640X delivers 28.4 pts/$ vs 61.7 pts/$ for the Ryzen 7 5800X — making the Ryzen 7 5800X the 74.1% better value option.

Feature	Core i5-7640X	Ryzen 7 5800X
MSRP	$249-45%	$449
Performance per Dollar	28.4	61.7+117%
Release Date	2017	2020

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