Core i7-3820 vs Ryzen 7 7800X3D

CPU

GPU

Core i7-3820

4 Cores8 Thrd130 WWMax: 3.8 GHz2012

Similar parts

·······

Buy on Amazon

Ryzen 7 7800X3D

8 Cores16 Thrd120 WWMax: 5 GHz2023

Ryzen family

·······

Buy on Amazon

Core i7-3820 vs Ryzen 7 7800X3D Performance Spectrum

Core i7-3820

4 / 8

5,787

0.0%

34,293

+492.6%

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 i7-3820 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 i7-3820 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 i7-3820

2012

Why buy it

✅Costs $163 less on MSRP ($286 MSRP vs $449 MSRP).
✅42.9% more PCIe lanes (40 vs 28) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 7800X3D across 37 shared CPU benchmark tests.
❌Lower PassMark (5,787 vs 34,293).
❌Lower PassMark per dollar, at 20.2 vs 76.4 PassMark/$ ($286 MSRP vs $449 MSRP).
❌Older platform position on LGA2011, while Ryzen 7 7800X3D moves to AM5 and DDR5.
❌No integrated graphics, while Ryzen 7 7800X3D can still boot and troubleshoot without a discrete GPU.

Ryzen 7 7800X3D

2023

Why buy it

✅Better for gaming: +147.7% higher average FPS across 37 shared CPU benchmark tests.
✅Delivers 277.5% more PassMark for each dollar spent, at 76.4 vs 20.2 PassMark/$ ($449 MSRP vs $286 MSRP).
✅Draws 120W instead of 130W, a 10W reduction.
✅Newer platform on AM5 with DDR5 support instead of LGA2011 and older memory support.
✅Integrated graphics onboard with AMD Radeon Graphics (2-core), while Core i7-3820 needs a discrete GPU.

Trade-offs

❌
57% HIGHER MSRP
$449 MSRPvs$286 MSRP

Quick Answers

So, is Ryzen 7 7800X3D better than Core i7-3820?

Yes. Ryzen 7 7800X3D is the better all-around CPU here. It gives you a 147.7% average FPS lead across 37 shared CPU game tests in our data, 492.6% 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 147.7% more average FPS across 37 shared CPU game tests. It also has a clear cache advantage at 96 MB versus 10 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 492.6% better PassMark, backed by 8 cores and 16 threads. It also has the larger cache pool with 860% larger total L3 cache (96 MB vs 10 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 57.0% more expensive on MSRP at $449 MSRP versus $286 MSRP, and it still gives you a 147.7% average FPS lead across 37 shared CPU game tests in our data. It is also 277.5% better value on MSRP (76.4 vs 20.2 PassMark/$), 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 2012), a healthier platform with AM5 and DDR5 instead of LGA2011, 3D V-Cache and a much larger 96 MB L3 cache instead of 10 MB, and more multi-core headroom with 8 cores / 16 threads instead of 4/8. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

Core i7-3820 vs Ryzen 7 7800X3D Technical Specifications

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

Core i7-3820

The Core i7-3820 is manufactured by Intel. It was released in Fevereiro 2012 (13 years ago). It is based on the Sandy Bridge-E (2011−2013) architecture. It features 4 cores and 8 threads. Base frequency is 3.6 GHz, with boost up to 3.8 GHz. L3 cache: 10240 kB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA2011. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 5,787 points. Launch price was $400.

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

The Core i7-3820 packs 4 cores / 8 threads, while the Ryzen 7 7800X3D offers 8 cores / 16 threads — the Ryzen 7 7800X3D has 4 more cores. Boost clocks reach 3.8 GHz on the Core i7-3820 versus 5 GHz on the Ryzen 7 7800X3D — a 27.3% clock advantage for the Ryzen 7 7800X3D (base: 3.6 GHz vs 4.4 GHz). The Core i7-3820 uses the Sandy Bridge-E (2011−2013) architecture (32 nm), while the Ryzen 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the Core i7-3820 scores 5,787 against the Ryzen 7 7800X3D's 34,293 — a 142.2% lead for the Ryzen 7 7800X3D. Geekbench 6 single-core — the metric most relevant to gaming — records 624 vs 2,700, a 124.9% lead for the Ryzen 7 7800X3D that directly translates to higher frame rates. L3 cache: 10240 kB (total) on the Core i7-3820 vs 96 MB (total) on the Ryzen 7 7800X3D.

Feature	Core i7-3820	Ryzen 7 7800X3D
Cores / Threads	4 / 8	8 / 16+100%
Boost Clock	3.8 GHz	5 GHz+32%
Base Clock	3.6 GHz	4.4 GHz+22%
L3 Cache	10240 kB (total)	96 MB (total)+860%
L2 Cache	256 kB (per core)	1 MB (per core)+300%
Process	32 nm	5 nm-84%
Architecture	Sandy Bridge-E (2011−2013)	Raphael (Zen4) (2022−2023)
PassMark	5,787	34,293+493%
Cinebench R23 Multi	—	18,500
Geekbench 6 Single	624	2,700+333%
Geekbench 6 Multi	—	15,000

🧠

Memory & Platform

The Core i7-3820 uses the LGA2011 socket (PCIe 2.0), while the Ryzen 7 7800X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1600 on the Core i7-3820 versus DDR5-5200 on the Ryzen 7 7800X3D — the Ryzen 7 7800X3D supports 225% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 7800X3D supports up to 128 GB of RAM compared to 64 GB — 100% more capacity for professional workloads. Memory channels: 4 (Core i7-3820) vs 2 (Ryzen 7 7800X3D). PCIe lanes: 40 (Core i7-3820) vs 28 (Ryzen 7 7800X3D) — the Core i7-3820 offers 12 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X79 (Core i7-3820) and X670E,X670,B650E,B650,A620 (Ryzen 7 7800X3D).

Feature	Core i7-3820	Ryzen 7 7800X3D
Socket	LGA2011	AM5
PCIe Generation	PCIe 2.0	PCIe 5.0+150%
Max RAM Speed	DDR3-1600	DDR5-5200+225%
Max RAM Capacity	64 GB	128 GB+100%
RAM Channels	4+100%	2
ECC Support	No	Yes
PCIe Lanes	40+43%	28

🔧

Advanced Features

Both processors feature an unlocked multiplier for overclocking. Only the Ryzen 7 7800X3D supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d, EPT (Core i7-3820) vs AMD-V (Ryzen 7 7800X3D). The Ryzen 7 7800X3D includes integrated graphics (AMD Radeon Graphics (2-core)), while the Core i7-3820 requires a dedicated GPU. Primary use case: Core i7-3820 targets HEDT Desktop, Ryzen 7 7800X3D targets Gaming. Direct competitor: Core i7-3820 rivals FX-8350; Ryzen 7 7800X3D rivals Intel Core i7-14700K.

Feature	Core i7-3820	Ryzen 7 7800X3D
Integrated GPU	No	Yes
IGPU Model	None	AMD Radeon Graphics (2-core)
Unlocked	Yes	Yes
AVX-512	No	Yes
Virtualization	VT-x, VT-d, EPT	AMD-V
Target Use	HEDT Desktop	Gaming

💰

Value Analysis

At launch, the Core i7-3820 was priced at $286, while the Ryzen 7 7800X3D came in at $449. On launch pricing ($286 vs $449), Core i7-3820 was $163 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i7-3820 delivers 20.2 pts/$ vs 76.4 pts/$ for the Ryzen 7 7800X3D — making the Ryzen 7 7800X3D the 116.2% better value option.

Feature	Core i7-3820	Ryzen 7 7800X3D
MSRP	$286-36%	$449
Performance per Dollar	20.2	76.4+278%
Release Date	2012	2023

Search Core i7-3820 on Amazon

Search Ryzen 7 7800X3D on Amazon

Affiliate Disclosure

ChipVERSUS is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. We may earn a commission on qualifying purchases made through our links. This comes at no additional cost to you and helps support our work in providing comprehensive PC building guides and tools.

Amazon and the Amazon logo are trademarks of Amazon.com, Inc. or its affiliates.