Ryzen 7 7840H
AMD Ryzen 7 7840H vs AMD Ryzen 7 H 255
CPU Comparison Result
Below are the results of a comparison of the characteristics and performance of the AMD Ryzen 7 7840H and AMD Ryzen 7 H 255 processors. This comparison will help you determine which one best suits your needs.
Basic
Label Name
AMD
AMD
Launch Date
January 2023
January 2025
Platform
Laptop
Laptop
Model Name
?
The Intel processor number is just one of several factors - along with processor brand, system configurations, and system-level benchmarks - to be considered when choosing the right processor for your computing needs.
Ryzen 7 7840H
Ryzen 7 H 255
Code Name
Phoenix
Zen 4 (Hawk Point)
Foundry
TSMC
-
Generation
Ryzen 7 (Zen 4 (Phoenix))
-
CPU Specifications
Performance-cores
-
8
Total Cores
?
Cores is a hardware term that describes the number of independent central processing units in a single computing component (die or chip).
8
8
Total Threads
?
Where applicable, Intel® Hyper-Threading Technology is only available on Performance-cores.
16
16
Performance-core Base Frequency
3.8 GHz
3.8 GHz
Performance-core Max Turbo Frequency
?
Maximum P-core turbo frequency derived from Intel® Turbo Boost Technology.
5.1 GHz
4.9 GHz
L1 Cache
64K per core
64 K per core
L2 Cache
1MB per core
1 MB per core
L3 Cache
16MB shared
16 MB shared
Bus Frequency
100MHz
100 MHz
CPU Socket
?
The socket is the component that provides the mechanical and electrical connections between the processor and motherboard.
AMD Socket FP8
FP8
Multiplier
38.0
38
Unlocked Multiplier
No
No
Technology
?
Lithography refers to the semiconductor technology used to manufacture an integrated circuit, and is reported in nanometer (nm), indicative of the size of features built on the semiconductor.
4 nm
4 nm
TDP
35 W
15
Max. Operating Temperature
?
Junction Temperature is the maximum temperature allowed at the processor die.
100 °C
100 °C
PCIe Version
?
PCI Express is a high-speed serial computer expansion bus standard used for connecting high-speed components, replacing older standards such as AGP, PCI, and PCI-X. It has gone through multiple revisions and improvements since its initial release. PCIe 1.0 was first introduced in 2002, and in order to meet the growing demand for higher bandwidth, subsequent versions have been released over time.
4
4.0
Instruction Set
?
The instruction set is a hard program stored inside the CPU that guides and optimizes CPU operations. With these instruction sets, the CPU can run more efficiently. There are many manufacturers that design CPUs, which results in different instruction sets, such as the 8086 instruction set for the Intel camp and the RISC instruction set for the ARM camp. x86, ARM v8, and MIPS are all codes for instruction sets. Instruction sets can be extended; for example, x86 added 64-bit support to create x86-64. Manufacturers developing CPUs that are compatible with a certain instruction set need authorization from the instruction set patent holder. A typical example is Intel authorizing AMD, enabling the latter to develop CPUs compatible with the x86 instruction set.
-
x86-64
Transistor Count
25 billions
25 billions
Memory Specifications
Memory Type
?
Intel® processors come in four different types: Single Channel, Dual Channel, Triple Channel, and Flex Mode. Maximum supported memory speed may be lower when populating multiple DIMMs per channel on products that support multiple memory channels.
DDR5-5600
LPDDR5X-7500,DDR5-5600
Max Memory Size
?
Max memory size refers to the maximum memory capacity supported by the processor.
256GB
256 GB
Memory Channels
?
The number of memory channels refers to the bandwidth operation for real world application.
2
2
Max Memory Bandwidth
?
Max Memory bandwidth is the maximum rate at which data can be read from or stored into a semiconductor memory by the processor (in GB/s).
89.6 GB/s
120 GB/s
ECC Memory Support
Yes
No
GPU Specifications
Integrated Graphics Model
?
An integrated GPU refers to the graphics core that is integrated into the CPU processor. Leveraging the processor's powerful computational capabilities and intelligent power efficiency management, it delivers outstanding graphics performance and a smooth application experience at a lower power consumption.
AMD Radeon™ 780M
AMD Radeon™ 780M
GPU Max Dynamic Frequency
2700 MHz
2600 MHz
Graphics Base Frequency
?
Graphics Base frequency refers to the rated/guaranteed graphics render clock frequency in MHz.
-
800 MHz
Execution Units
?
The Execution Unit is the foundational building block of Intel’s graphics architecture. Execution Units are compute processors optimized for simultaneous Multi-Threading for high throughput compute power.
12
12
Graphics Performance
10 TFLOPS
-
Interfaces and Ports
PCIe Lanes
20
20
Advantages
Ryzen 7 7840H
- Higher Performance-core Max Turbo Frequency: 5.1 GHz (5.1 GHz vs 4.9 GHz)
Ryzen 7 H 255
- Newer Launch Date: January 2025 (January 2023 vs January 2025)
Geekbench 6
Single Core
Ryzen 7 7840H
+46%
2274
Ryzen 7 H 255
1556
Multi Core
Ryzen 7 7840H
+31%
11610
Ryzen 7 H 255
8891
Performance
Ryzen 7 H 255
Single Core
Multi Core
Passmark CPU
Single Core
Ryzen 7 7840H
+58%
3729
Ryzen 7 H 255
2360
Multi Core
Ryzen 7 7840H
+38%
28493
Ryzen 7 H 255
20686
SiliconCat Rating
111
Ranks 111 among Laptop CPU on our website
375
Ranks 375 among all CPU on our website
188
Ranks 188 among Laptop CPU on our website
621
Ranks 621 among all CPU on our website
Ryzen 7 7840H
Ryzen 7 H 255
