Core i7-7820X vs Ryzen 7 7800X3D

Core i7-7820X vs Ryzen 7 7800X3D Performance Spectrum

Core i7-7820X

8 / 16

17,171

0.0%

34,293

+99.7%

Ryzen Threadripper PRO 7965WX

Ryzen Threadripper 7970X

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 i7-7820X vs Ryzen 7 7800X3D 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 i7-7820X vs Ryzen 7 7800X3D: Pros, Cons & Final Verdict

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

Core i7-7820X

2017

Why buy it

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7800X3D across 39 shared CPU benchmark tests.
❌Lower PassMark (17,171 vs 34,293).
❌Lower PassMark per dollar, at 28.7 vs 76.4 PassMark/$ ($599 MSRP vs $449 MSRP).
❌16.7% higher power demand at 140W vs 120W.
❌Older platform position on LGA2066 with DDR4, while Ryzen 7 7800X3D moves to AM5 and DDR5.

Ryzen 7 7800X3D

2023

Why buy it

✅Better for gaming: +33.0% higher average FPS across 39 shared CPU benchmark tests.
✅Costs $150 less on MSRP ($449 MSRP vs $599 MSRP).
✅Delivers 166.4% more PassMark for each dollar spent, at 76.4 vs 28.7 PassMark/$ ($449 MSRP vs $599 MSRP).
✅Draws 120W instead of 140W, a 20W reduction.
✅Newer platform on AM5 with DDR5 support instead of LGA2066 and DDR4.

Trade-offs

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

Quick Answers

So, is Ryzen 7 7800X3D better than Core i7-7820X?

Yes. Ryzen 7 7800X3D is the better all-around CPU here. It gives you a 33.0% average FPS lead across 39 shared CPU game tests in our data, 99.7% 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 7800X3D is the better pick. According to our tests, it delivers 33.0% more average FPS across 39 shared CPU game tests. It also has a clear cache advantage at 96 MB versus 11 MB.

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

For streaming, content creation, and heavier multitasking, Ryzen 7 7800X3D is the stronger fit. You are getting 99.7% better PassMark, backed by 8 cores and 16 threads. It also has the larger cache pool with 772.7% larger total L3 cache (96 MB vs 11 MB).

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

Ryzen 7 7800X3D is the better buy right now. Ryzen 7 7800X3D comes in $150 cheaper on MSRP at $449 MSRP versus $599 MSRP, and it still gives you a 33.0% average FPS lead across 39 shared CPU game tests in our data. It is also 166.4% better value on MSRP (76.4 vs 28.7 PassMark/$), 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 7800X3D makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2017), a healthier platform with AM5 and DDR5 instead of LGA2066, 3D V-Cache and a much larger 96 MB L3 cache instead of 11 MB, and more multi-core headroom with 8 cores / 16 threads instead of 8/16. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i7-7820X vs Ryzen 7 7800X3D Technical Specifications

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

Core i7-7820X

The Core i7-7820X 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 8 cores and 16 threads. Base frequency is 3.6 GHz, with boost up to 4.5 GHz. L3 cache: 11 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: 17,171 points. Launch price was $599.

Ryzen 7 7800X3D

The Ryzen 7 7800X3D is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Raphael (Zen4) (2022−2023) architecture. It features 8 cores and 16 threads. Base frequency is 4.4 GHz, with boost up to 5 GHz. L3 cache: 96 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5-5200. Passmark benchmark score: 34,293 points. Launch price was $449.

⚡

Processing Power

Both the Core i7-7820X and Ryzen 7 7800X3D share an identical 8-core/16-thread configuration. Boost clocks reach 4.5 GHz on the Core i7-7820X versus 5 GHz on the Ryzen 7 7800X3D — a 10.5% clock advantage for the Ryzen 7 7800X3D (base: 3.6 GHz vs 4.4 GHz). The Core i7-7820X uses the Skylake (server) (2017−2018) architecture (14 nm), while the Ryzen 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the Core i7-7820X scores 17,171 against the Ryzen 7 7800X3D's 34,293 — a 66.5% lead for the Ryzen 7 7800X3D. L3 cache: 11 MB (total) on the Core i7-7820X vs 96 MB (total) on the Ryzen 7 7800X3D.

Feature	Core i7-7820X	Ryzen 7 7800X3D
Cores / Threads	8 / 16	8 / 16
Boost Clock	4.5 GHz	5 GHz+11%
Base Clock	3.6 GHz	4.4 GHz+22%
L3 Cache	11 MB (total)	96 MB (total)+773%
L2 Cache	1 MB (per core)	1 MB (per core)
Process	14 nm	5 nm-64%
Architecture	Skylake (server) (2017−2018)	Raphael (Zen4) (2022−2023)
PassMark	17,171	34,293+100%
Cinebench R23 Multi	—	18,500
Geekbench 6 Single	—	2,700
Geekbench 6 Multi	—	15,000

🧠

Memory & Platform

The Core i7-7820X uses the LGA2066 socket (PCIe 3.0), while the Ryzen 7 7800X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard.

Feature	Core i7-7820X	Ryzen 7 7800X3D
Socket	LGA2066	AM5
PCIe Generation	PCIe 3.0	PCIe 5.0+67%
Max RAM Speed	—	DDR5-5200
Max RAM Capacity	—	128 GB
RAM Channels	—	2
ECC Support	—	Yes
PCIe Lanes	—	28

🔧

Advanced Features

Virtualization: not specified (Core i7-7820X) / AMD-V (Ryzen 7 7800X3D). The Ryzen 7 7800X3D includes integrated graphics (AMD Radeon Graphics (2-core)), while the Core i7-7820X requires a dedicated GPU. Primary use case: Ryzen 7 7800X3D targets Gaming. Direct competitor: Ryzen 7 7800X3D rivals Intel Core i7-14700K.

Feature	Core i7-7820X	Ryzen 7 7800X3D
Integrated GPU	—	Yes
IGPU Model	—	AMD Radeon Graphics (2-core)
Unlocked	—	Yes
AVX-512	—	Yes
Virtualization	—	AMD-V
Target Use	—	Gaming

💰

Value Analysis

At launch, the Core i7-7820X was priced at $599, while the Ryzen 7 7800X3D came in at $449. On launch pricing ($599 vs $449), Ryzen 7 7800X3D was $150 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-7820X delivers 28.7 pts/$ vs 76.4 pts/$ for the Ryzen 7 7800X3D — making the Ryzen 7 7800X3D the 90.8% better value option.

Feature	Core i7-7820X	Ryzen 7 7800X3D
MSRP	$599	$449-25%
Performance per Dollar	28.7	76.4+166%
Release Date	2017	2023

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