AMD Ryzen Threadripper 3990X vs AMD Ryzen 9 8945HS

Updated Sep 2026 · Scored by the Let’s Compare Data Engine · How we score

For most buyers the AMD Ryzen Threadripper 3990X is the better pick — it scores 85/100 to the AMD Ryzen 9 8945HS's 50, leading on Core Specifications and Benchmark. Choose the AMD Ryzen 9 8945HS instead if integrated graphics matters most to you, where it comes out ahead.

Verdict

Our overall take, at a glance

AMD Ryzen Threadripper 3990X leads overall

AMD Ryzen Threadripper 3990X

AMD Ryzen 9 8945HS

Why it stands out

Core Specifications Base Power Consumption: 280 W (522% more)
Core Specifications L2 Cache: 32 MB (300% more)
Core Specifications L3 Cache: 256 MB (1500% more)

Winner by category for AMD Ryzen Threadripper 3990X vs AMD Ryzen 9 8945HS
Category	AMD Ryzen Threadripper 3990X	AMD Ryzen 9 8945HS	Winner
Core Specifications	64	52	AMD Ryzen Threadripper 3990X
Integrated Graphics	0	50	AMD Ryzen 9 8945HS
Benchmark	95	49	AMD Ryzen Threadripper 3990X

In-depth analysisAI

AI-generated from the cited sources — may be incomplete or inaccurate; verify important details before deciding · generated Sep 2026.

AMD Ryzen Threadripper 3990X

The AMD Ryzen Threadripper 3990X is a high-core count, x86-64 microprocessor designed for demanding professional computing tasks. It belongs to AMD's line of robust desktop processors, making it suitable for users needing extensive computational power. Its architecture focuses on scalability and performance over standard consumer usage.

Best for Workstation PCsBest for Video EditingBest for Scientific Simulation

Pros

Designed as a high-end processor, suggesting superior multi-threaded capability (general knowledge).
It is classified within the Threadripper segment, known for its suitability in complex professional workstations.
The overall line of processors includes various generation identifiers through history, indicating continuous development and specialization into compute tasks.

Cons

Being a high-power workstation chip often requires more complex cooling solutions than standard CPUs (general knowledge).
Its specific focus on professional work and core count places it at the higher end of the market spectrum.

AMD Ryzen 9 8945HS

The AMD Ryzen 9 8945HS is a high-performance laptop processor configured with 8 cores and 16 threads to handle demanding mobile workloads. It operates at a base power consumption of 45 Watts and is built for compatible FP7, FP7r2, and FP8 platforms. This chip is designed for users who require robust multi-threaded processing power in portable computer systems.

Best for Resource-heavy mobile multitasking and content creationBest for High-performance gaming laptops requiring strong CPU throughput

Pros

High processing capability indicated by a PassMark CPU Mark benchmark of 34,000
Strong multitasking performance delivered through 8 cores and 16 threads
Generous memory buffer with a combined 24 megabytes of L2 and L3 cache

Cons

A 45-Watt base power requirement may demand robust thermal management and reduce battery life in thin laptop designs

Value for Money

Which is the better deal for the price

Pre-filled with launch prices where known — enter today's price for an up-to-date check. Use the same currency for both.

AMD Ryzen Threadripper 3990X

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AMD Ryzen 9 8945HS

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Performance

Higher benchmark score = faster

AMD Ryzen Threadripper 3990X79,592

AMD Ryzen 9 8945HS29,126

See the raw benchmark values →

Benchmark score — a measured indicator of raw performance, not a guarantee of real-world speed.

Detailed Specifications

The full spec sheet, side by side

Core Specifications

Feature	AMD Ryzen Threadripper 3990X	AMD Ryzen 9 8945HS
Cores	64	8
Threads	128	16
Base Frequency	2.9 GHz	4 GHz38% more
Base Power Consumption	280 W522% more	45 W
Maximum Frequency	4.3 GHz	5.2 GHz21% more
Maximum Power Consumption	N/A	54 W
L1 Cache	N/A	512 KB
L2 Cache	32 MB300% more	8 MB
L3 Cache	256 MB1500% more	16 MB
Lithography Process	7 nm	4 nm43% less
Is unlocked	Yes	No

Integrated Graphics

Feature	AMD Ryzen Threadripper 3990X	AMD Ryzen 9 8945HS
Model	N/A

Benchmark

Feature	AMD Ryzen Threadripper 3990X	AMD Ryzen 9 8945HS
PassMark CPU Mark	79,592173% more	29,126

Specification Note

Specifications are compiled from official manufacturer data and other reliable internet sources. Some features may vary by region or model configuration.

Frequently Asked Questions

Common questions about AMD Ryzen Threadripper 3990X vs AMD Ryzen 9 8945HS comparison

Based on our overall comparison score, AMD Ryzen Threadripper 3990X rates higher at 92/100 versus 59/100 for AMD Ryzen 9 8945HS — a 33-point lead. AMD Ryzen Threadripper 3990X is the stronger overall pick, though the right choice still depends on which specs matter most to you; the full spec table above breaks down every difference.

AMD Ryzen Threadripper 3990X and AMD Ryzen 9 8945HS are compared side by side above across every spec in the cpus category — including performance, features and design — each scored 0–100 so you can see exactly where one leads the other. Our overall scores are 92/100 for AMD Ryzen Threadripper 3990X and 59/100 for AMD Ryzen 9 8945HS.

If you want the higher-rated cpus option overall, AMD Ryzen Threadripper 3990X (92/100) edges out AMD Ryzen 9 8945HS (59/100). But if AMD Ryzen 9 8945HS is cheaper or stronger on the specific specs you care about, it can still be the better buy — use the spec table and strengths profile above to decide.