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AMD Ryzen 7 PRO 8840U vs AMD Ryzen 9 5900HX: Comparison
Ryzen 7 PRO 8840U vs Ryzen 9 5900HX p-core boost clock compared
P-core boost clock is the dividing line, Ryzen 7 PRO 8840U 5.1 GHz against Ryzen 9 5900HX 4.6 GHz. L2 cache runs the same way, 8 MB on the Ryzen 7 PRO 8840U versus 4 MB on the Ryzen 9 5900HX, another win for Ryzen 7 PRO 8840U. There is a split on release year as well, 2024 on the Ryzen 7 PRO 8840U versus 2021 on the Ryzen 9 5900HX. Igpu is not the same on both, AMD Radeon 780M on the Ryzen 7 PRO 8840U versus AMD Radeon Graphics on the Ryzen 9 5900HX. They differ on microarchitecture too, Zen 4 on the Ryzen 7 PRO 8840U versus Zen 3, Ryzen 5000 Series "Cezanne" on the Ryzen 9 5900HX.
Who each one is for
The Ryzen 7 PRO 8840U suits mainstream desktop builds and everyday productivity, though it is the wrong buy for extreme overclocking (unless K/X-series) and workstation-class multi-threaded workloads. Take the Ryzen 9 5900HX for desktop-replacement gaming laptops wanting genuinely top-tier AMD mobile Zen 3 performance. It is the wrong buy for buyers wanting the absolute highest clocks in AMD's HX lineup, the 5980HX offers a modest additional edge at the same core count.
Where the two are identical
Where they agree, they agree completely, total cores, performance cores, efficiency cores, total threads and p-core base clock included, so the decision does not turn on any of those. They match on 9 further specifications as well.
Frequently asked questions
Do the Ryzen 7 PRO 8840U and Ryzen 9 5900HX differ on configurable tdp floor?
Yes. Configurable TDP Floor reads 15 W on the Ryzen 7 PRO 8840U versus 35 W on the Ryzen 9 5900HX.
Is the L3 Cache the same on the Ryzen 7 PRO 8840U and Ryzen 9 5900HX?
It is. Both are listed at 16 MB, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- AMD Ryzen 7 PRO 8840U
- AMD
- AMD Ryzen 9 5900HX
- AMD
Product Line
- AMD Ryzen 7 PRO 8840U
- Ryzen
- AMD Ryzen 9 5900HX
- Ryzen 9
Form Factor
- AMD Ryzen 7 PRO 8840U
- Laptop
- AMD Ryzen 9 5900HX
- Laptop
Model Number
- AMD Ryzen 7 PRO 8840U
- Ryzen 7 PRO 8840U
- AMD Ryzen 9 5900HX
- 5900HX
Codename
- AMD Ryzen 7 PRO 8840U
- Hawk Point
- AMD Ryzen 9 5900HX
- Cezanne
Release Year
- AMD Ryzen 7 PRO 8840U
- 2024
- AMD Ryzen 9 5900HX
- 2021
iGPU
- AMD Ryzen 7 PRO 8840U
- AMD Radeon 780M
- AMD Ryzen 9 5900HX
- AMD Radeon Graphics
Market Segment
- AMD Ryzen 7 PRO 8840U
- Laptop
- AMD Ryzen 9 5900HX
- Laptop
Microarchitecture
- AMD Ryzen 7 PRO 8840U
- Zen 4
- AMD Ryzen 9 5900HX
- Zen 3, Ryzen 5000 Series "Cezanne"
Socket
- AMD Ryzen 7 PRO 8840U
- FP7, FP7r2
- AMD Ryzen 9 5900HX
- FP6
Socket Status
- AMD Ryzen 7 PRO 8840U
- Mature
- AMD Ryzen 9 5900HX
- End of Life
Process Node
- AMD Ryzen 7 PRO 8840U
- 4 nm
- AMD Ryzen 9 5900HX
- 7 nm
Total Cores
- AMD Ryzen 7 PRO 8840U
- 8
- AMD Ryzen 9 5900HX
- 8
Performance Cores
- AMD Ryzen 7 PRO 8840U
- 8
- AMD Ryzen 9 5900HX
- 8
Efficiency Cores
- AMD Ryzen 7 PRO 8840U
- 0
- AMD Ryzen 9 5900HX
- 0
Total Threads
- AMD Ryzen 7 PRO 8840U
- 16
- AMD Ryzen 9 5900HX
- 16
SMT Enabled
- AMD Ryzen 7 PRO 8840U
- Yes
- AMD Ryzen 9 5900HX
- Yes
P-Core Base Clock
- AMD Ryzen 7 PRO 8840U
- 3.3 GHz
- AMD Ryzen 9 5900HX
- 3.3 GHz
P-Core Boost Clock
- AMD Ryzen 7 PRO 8840U
- 5.1 GHz
- AMD Ryzen 9 5900HX
- 4.6 GHz
Unlocked Multiplier
- AMD Ryzen 7 PRO 8840U
- No
- AMD Ryzen 9 5900HX
- Yes
L2 Cache
- AMD Ryzen 7 PRO 8840U
- 8 MBBest
- AMD Ryzen 9 5900HX
- 4 MB-50%
L3 Cache
- AMD Ryzen 7 PRO 8840U
- 16 MB
- AMD Ryzen 9 5900HX
- 16 MB
Base Power
- AMD Ryzen 7 PRO 8840U
- 28 W
- AMD Ryzen 9 5900HX
- 45 W
Configurable TDP Floor
- AMD Ryzen 7 PRO 8840U
- 15 W
- AMD Ryzen 9 5900HX
- 35 W
Memory Type
- AMD Ryzen 7 PRO 8840U
- DDR5 or LPDDR5XBest
- AMD Ryzen 9 5900HX
- DDR4, LPDDR4
Memory Channels
- AMD Ryzen 7 PRO 8840U
- 2
- AMD Ryzen 9 5900HX
- 2
ECC Support
- AMD Ryzen 7 PRO 8840U
- No
- AMD Ryzen 9 5900HX
- No
Integrated Graphics
- AMD Ryzen 7 PRO 8840U
- Yes
- AMD Ryzen 9 5900HX
- Yes
iGPU Model
- AMD Ryzen 7 PRO 8840U
- AMD Radeon 780M
- AMD Ryzen 9 5900HX
- AMD Radeon Vega 8 Graphics
iGPU Compute Units
- AMD Ryzen 7 PRO 8840U
- 12
- AMD Ryzen 9 5900HX
- 8
Copilot Plus Certified
- AMD Ryzen 7 PRO 8840U
- No
- AMD Ryzen 9 5900HX
- No
PCIe Generation
- AMD Ryzen 7 PRO 8840U
- PCIe 4.0
- AMD Ryzen 9 5900HX
- PCIe 3.0
Retail Availability
- AMD Ryzen 7 PRO 8840U
- Soldered Only
- AMD Ryzen 9 5900HX
- Soldered Only
Which one should you pick?
Choose 8840U if you want the higher L2 cache (8 MB vs 4 MB), the higher L3 cache (16 MB vs 16 MB) and the higher memory channels (2 vs 2).
Choose 5900HX if you already have it on hand or find it at a lower price.