Core i7-3820 vs Ryzen 3 PRO 3300U

Core i7-3820 vs Ryzen 3 PRO 3300U Performance Spectrum

Core i7-3820

4 / 8

5,787

0.0%

5,831

+0.8%

Ryzen Threadripper PRO 3975WX

Ryzen Threadripper PRO 7965WX

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 3 PRO 3300U 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 3 PRO 3300U: 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

✅Better for gaming: +13.9% higher average FPS across 50 shared CPU benchmark tests.
✅+150% larger total L3 cache (10 MB vs 4 MB).
✅100+% more PCIe lanes (40 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (5,787 vs 5,831).
❌Launch MSRP is still $286 MSRP, while Ryzen 3 PRO 3300U mostly shows up through inconsistent older-market listings.
❌766.7% higher power demand at 130W vs 15W.

Ryzen 3 PRO 3300U

2019

Why buy it

✅+0.8% higher PassMark.
✅Draws 15W instead of 130W, a 115W reduction.

Trade-offs

❌Worse for gaming: lower average FPS than Core i7-3820 across 50 shared CPU benchmark tests.
❌Smaller total L3 cache (4 MB vs 10 MB).

Quick Answers

So, is Ryzen 3 PRO 3300U better than Core i7-3820?

It depends on what you want from the system. For gaming, Core i7-3820 is ahead with a 13.9% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen 3 PRO 3300U pulls ahead with 0.8% better PassMark. Core i7-3820 also has the bigger cache pool with 150% larger total L3 cache (10 MB vs 4 MB).

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

For streaming, content creation, and heavier multitasking, Ryzen 3 PRO 3300U is the stronger fit. You are getting 0.8% better PassMark, backed by 4 cores and 4 threads.

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

Ryzen 3 PRO 3300U is still the much better call for a fresh build. Ryzen 3 PRO 3300U comes in at an unclear MSRP at unclear MSRP versus $286 MSRP, and it still gives you 0.8% better PassMark. Core i7-3820 only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2012 platform. Even with 100.0% better value on paper (20.2 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA2011.

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

Ryzen 3 PRO 3300U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2012) and more multi-core headroom with 4 cores / 4 threads instead of 4/8. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i7-3820 vs Ryzen 3 PRO 3300U 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 3 PRO 3300U

The Ryzen 3 PRO 3300U is manufactured by AMD. It was released in 8 April 2019 (6 years ago). It is based on the Picasso (2019−2022) architecture. It features 4 cores and 4 threads. Base frequency is 2.1 GHz, with boost up to 3.5 GHz. L3 cache: 4 MB (total). L2 cache: 512K (per core). Built on 12 nm process technology. Socket: FP5. Thermal design power (TDP): 15 Watt. Memory support: DDR4 Dual-channel. Passmark benchmark score: 5,831 points. Launch price was $149.

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Processing Power

The Core i7-3820 packs 4 cores / 8 threads, matching the Ryzen 3 PRO 3300U's 4 cores. Boost clocks reach 3.8 GHz on the Core i7-3820 versus 3.5 GHz on the Ryzen 3 PRO 3300U — a 8.2% clock advantage for the Core i7-3820 (base: 3.6 GHz vs 2.1 GHz). The Core i7-3820 uses the Sandy Bridge-E (2011−2013) architecture (32 nm), while the Ryzen 3 PRO 3300U uses Picasso (2019−2022) (12 nm). In PassMark, the Core i7-3820 scores 5,787 against the Ryzen 3 PRO 3300U's 5,831 — a 0.8% lead for the Ryzen 3 PRO 3300U. L3 cache: 10240 kB (total) on the Core i7-3820 vs 4 MB (total) on the Ryzen 3 PRO 3300U.

Feature	Core i7-3820	Ryzen 3 PRO 3300U
Cores / Threads	4 / 8	4 / 4
Boost Clock	3.8 GHz+9%	3.5 GHz
Base Clock	3.6 GHz+71%	2.1 GHz
L3 Cache	10240 kB (total)+150%	4 MB (total)
L2 Cache	256 kB (per core)	512K (per core)+100%
Process	32 nm	12 nm-63%
Architecture	Sandy Bridge-E (2011−2013)	Picasso (2019−2022)
PassMark	5,787	5,831
Geekbench 6 Single	624	—

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Memory & Platform

The Core i7-3820 uses the LGA2011 socket (PCIe 2.0), while the Ryzen 3 PRO 3300U uses FP5 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i7-3820	Ryzen 3 PRO 3300U
Socket	LGA2011	FP5
PCIe Generation	PCIe 2.0	PCIe 3.0+50%
Max RAM Speed	DDR3-1600	—
Max RAM Capacity	64 GB	—
RAM Channels	4	—
ECC Support	No	—
PCIe Lanes	40	—

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Advanced Features

Virtualization: VT-x, VT-d, EPT (Core i7-3820) / not specified (Ryzen 3 PRO 3300U). Primary use case: Core i7-3820 targets HEDT Desktop. Direct competitor: Core i7-3820 rivals FX-8350.