Core i7-990X vs Ryzen 5 3580U

Core i7-990X vs Ryzen 5 3580U Performance Spectrum

Core i7-990X

6 / 12

7,135

0.0%

7,142

+0.1%

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 i7-990X vs Ryzen 5 3580U 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 i7-990X vs Ryzen 5 3580U: Pros, Cons & Final Verdict

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

Core i7-990X

2011

Why buy it

✅+200% larger total L3 cache (12 MB vs 4 MB).

Trade-offs

❌Lower PassMark (7,135 vs 7,142).
❌Launch MSRP is still $999 MSRP, while Ryzen 5 3580U mostly shows up through inconsistent older-market listings.
❌766.7% higher power demand at 130W vs 15W.

Ryzen 5 3580U

2019

Why buy it

✅+0.1% higher PassMark.
✅Draws 15W instead of 130W, a 115W reduction.

Trade-offs

❌Smaller total L3 cache (4 MB vs 12 MB).

Quick Answers

So, is Ryzen 5 3580U better than Core i7-990X?

It depends on what you want from the system. For gaming, Core i7-990X is ahead with a 2.0% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, Ryzen 5 3580U pulls ahead with 0.1% better PassMark. Core i7-990X also has the bigger cache pool with 200% larger total L3 cache (12 MB vs 4 MB).

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

For streaming, content creation, and heavier multitasking, Ryzen 5 3580U is the stronger fit. You are getting 0.1% better PassMark, backed by 4 cores and 8 threads.

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

Ryzen 5 3580U is still the much better call for a fresh build. Ryzen 5 3580U comes in at an unclear MSRP at unclear MSRP versus $999 MSRP, and it still gives you 0.1% better PassMark. Core i7-990X only looks stronger on raw value math because it is extremely cheap, but that usually means used-market pricing on an obsolete 2011 platform. Even with 100.0% better value on paper (7.1 vs 0.0 PassMark/$), it really only makes sense as a cheap stopgap or a niche existing-platform option for someone already on LGA1366.

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

Ryzen 5 3580U makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2011) and more multi-core headroom with 4 cores / 8 threads instead of 6/12. That extra compute headroom is more likely to matter as games, background tasks, and creator workloads get heavier.

Core i7-990X vs Ryzen 5 3580U Technical Specifications

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

Core i7-990X

The Core i7-990X is manufactured by Intel. It was released in 24 February 2011 (14 years ago). It is based on the Gulftown (2010−2011) architecture. It features 6 cores and 12 threads. Base frequency is 3.46 GHz, with boost up to 3.73 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 7,135 points. Launch price was $1,104.

Ryzen 5 3580U

The Ryzen 5 3580U is manufactured by AMD. It was released in 6 January 2019 (6 years ago). It is based on the Picasso-U (Zen+) (2019−2020) architecture. It features 4 cores and 8 threads. Base frequency is 2.1 GHz, with boost up to 3.7 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. Passmark benchmark score: 7,142 points. Launch price was $149.

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Processing Power

The Core i7-990X packs 6 cores / 12 threads, while the Ryzen 5 3580U offers 4 cores / 8 threads — the Core i7-990X has 2 more cores. Boost clocks reach 3.73 GHz on the Core i7-990X versus 3.7 GHz on the Ryzen 5 3580U — a 0.8% clock advantage for the Core i7-990X (base: 3.46 GHz vs 2.1 GHz). The Core i7-990X uses the Gulftown (2010−2011) architecture (32 nm), while the Ryzen 5 3580U uses Picasso-U (Zen+) (2019−2020) (12 nm). In PassMark, the Core i7-990X scores 7,135 against the Ryzen 5 3580U's 7,142 — a 0.1% lead for the Ryzen 5 3580U. L3 cache: 12 MB (total) on the Core i7-990X vs 4 MB (total) on the Ryzen 5 3580U.

Feature	Core i7-990X	Ryzen 5 3580U
Cores / Threads	6 / 12+50%	4 / 8
Boost Clock	3.73 GHz	3.7 GHz
Base Clock	3.46 GHz+65%	2.1 GHz
L3 Cache	12 MB (total)+200%	4 MB (total)
L2 Cache	256 kB (per core)	512K (per core)+100%
Process	32 nm	12 nm-63%
Architecture	Gulftown (2010−2011)	Picasso-U (Zen+) (2019−2020)
PassMark	7,135	7,142

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Memory & Platform

The Core i7-990X uses the LGA1366 socket (PCIe 2.0), while the Ryzen 5 3580U uses FP5 (PCIe 3.0) — making them incompatible on the same motherboard.