CPU Showdown

Ryzen 5 PRO 7645vsRyzen Threadripper 9980X

The Ryzen 5 PRO 7645 is a sensible, power-efficient office CPU for professional workstations, while the Threadripper 9980X is a monster multi-core chip for creators and engineers who need to chew through massive rendering or simulation jobs.

AMD Ryzen 5 PRO 7645
6C / 12T · 65W
VS
AMD Ryzen Threadripper 9980X
64C / 128T · 350W
AMD

Ryzen 5 PRO 7645

Raphael · 5 nm · 2023

17score
4.7/ 5
0 votes
Cores / Threads
6 / 12
TDP
65W
Boost Clock
5.1 GHz
L3 Cache
32 MB

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AMD

Ryzen Threadripper 9980X

Shimada Peak · 4 nm · 2025

86score
3.9/ 5
0 votes
Cores / Threads
64 / 128
TDP
350W
Boost Clock
5.4 GHz
L3 Cache
256 MB

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Aggregate Performance

Overall Performance Score

A unified score from combined synthetic and real-world benchmarks. 100 represents the fastest desktop CPU available.

Ryzen 5 PRO 7645
17
Ryzen Threadripper 9980XWinner
86
Ryzen Threadripper 9980X leads by 405.9% in aggregate performance.
Where they rank overall
#1EPYC 9755100
#2Ryzen Threadripper 9980X86
#3Ryzen Threadripper 7980X82
#132Core i9-7960X17
#133Ryzen 5 PRO 764517
#134Core i7-13700T17
Technical Specifications

Side-by-Side Specs

Every detail compared. Highlighted cells indicate the leading value for that metric.

SpecsRyzen 5 PRO 7645Ryzen Threadripper 9980X
Cores
Total Cores664
Threads12128
Base Clock3.8 GHz3.2 GHz
Boost Clock5.1 GHz5.4 GHz
Cache
L2 Cache6 MB64 MB
L3 Cache32 MB256 MB
Platform
SocketAM5sTR5
MemoryDDR5DDR5
PCIePCIe 5.0PCIe 5.0
iGPUAMD Radeon Graphics
Power
Base TDP65W350W
General
Process5 nm4 nm
Verdict

Which should you buy?

Winner overall

The Ryzen Threadripper 9980X wins for heavy multi-threaded tasks, but the Ryzen 5 PRO 7645 is the smarter pick for most users.

Best value

The Ryzen 5 PRO 7645 offers far better value for everyday computing, while the Ryzen Threadripper 9980X targets professional workloads.

When the other wins

The Ryzen 5 PRO 7645 is the right choice for a budget-friendly office PC that doesn't need extreme multi-core power.

FAQ

Frequently asked questions

Is the Ryzen 5 PRO 7645 better than the Ryzen Threadripper 9980X?

Overall the Ryzen Threadripper 9980X is the stronger processor: it ranks higher in our aggregate performance score (86 vs 17 out of 100), so it leads the Ryzen 5 PRO 7645 in most workloads.

How much faster is the Ryzen Threadripper 9980X than the Ryzen 5 PRO 7645?

Based on our aggregated benchmark scores the Ryzen Threadripper 9980X is roughly 406% faster than the Ryzen 5 PRO 7645 overall. The real-world gap varies by game, resolution and settings.

Which should you buy, the Ryzen 5 PRO 7645 or the Ryzen Threadripper 9980X?

If you want the most performance, pick the Ryzen Threadripper 9980X. If the Ryzen 5 PRO 7645 is meaningfully cheaper where you shop, it can be the better value for similar real-world results — check current prices and the full spec comparison above before deciding.