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AMD A8-7100 vs AMD Ryzen 7 7840U

Last updated: 2026-06-01

Table of Contents

Summary
Benchmarks
Specifications
User Reviews
Popular Comparisons

Summary

Benchmarks

Performance Overview
Average performance across multiple benchmarks

Single-core performance

Rank 2 - 17 %

AMD A8-7100

Rank 1 - 100 %

AMD Ryzen 7 7840U

Multi-core performance

Rank 2 - 9 %

AMD A8-7100

Rank 1 - 100 %

AMD Ryzen 7 7840U

Geekbench 5, 64bit Single-Core
Single-core performance

4C / 4T · 3.00 GHz

306

8C / 16T · 5.10 GHz

1,850

Geekbench 5, 64bit Multi-Core
Multi-core performance

4C / 4T · 2.40 GHz

766

8C / 16T · 3.30 GHz

9,612

iGPU - FP32 Performance (Single-precision GFLOPS)

AMD Radeon R5 (Kaveri)

262

AMD Radeon 780M

4,201

More benchmarks

Cinebench 2024 (SC)
427 entries

Cinebench 2024 (MC)
422 entries

Cinebench R23 (SC)
690 entries

Cinebench R23 (MC)
665 entries

Geekbench 6 (SC)
1,989 entries

Geekbench 6 (MC)
1,927 entries

Geekbench 5 (SC)
2,512 entries

Geekbench 5 (MC)
2,483 entries

FP32 SP (iGPU)
2,219 entries

3DMark Timespy (iGPU)
534 entries

PassMark CPU-Mark
2,504 entries

Cinebench R15 (SC)
1,113 entries

Cinebench R15 (MC)
1,110 entries

Geekbench 3 (SC)
945 entries

Geekbench 3 (MC)
941 entries

Cinebench R11.5 (SC)
826 entries

Cinebench R11.5 (MC)
837 entries

CPU performance per watt (efficiency)
140 entries

AI performance (NPU)
218 entries

Specifications

At a glance

Wischen	AMD A8-7100	AMD Ryzen 7 7840U
Family	AMD A (112)	AMD Ryzen 7 (79)
CPU group	AMD A8-7000 (6)	AMD Ryzen 7040 (21)
Architecture	Kaveri (Steamroller)	Phoenix (Zen 4)
Technology	28 nm	4 nm
Segment	Notebook	Notebook
Socket	FM2+	FP8
Predecessor
Successor		AMD Ryzen 7 8840U

CPU Cores and Base Frequency

Wischen	AMD A8-7100	AMD Ryzen 7 7840U
CPU Cores / Threads	4 / 4	8 / 16
Hyperthreading / SMT	✗	✓
Core architecture	normal	normal
Cores:	4x	8x Zen 4
Frequency:	1.80 GHz	3.30 GHz
Turbo (1 Core):	3.00 GHz	5.10 GHz
Turbo (All Cores):	2.40 GHz
L2-Cache		8.00 MB
L3-Cache	4.00 MB	16.00 MB
Overclocking	✗	✗

Integrated graphics (iGPU)

Wischen	AMD A8-7100	AMD Ryzen 7 7840U
GPU name	AMD Radeon R5 (Kaveri)	AMD Radeon 780M
GPU frequency	0.45 - 0.51 GHz	0.80 - 2.70 GHz
CUs / Shader	4 / 256	12 / 768
Raytracing	✗	✓
Max. displays	2	4
Max. GPU Memory	2 GB	32 GB
Technology	28 nm	4 nm
Release date	Q1/2014	Q1/2023

NPU AI performance

Wischen	AMD A8-7100	AMD Ryzen 7 7840U
AI hardware		AMD Ryzen™ AI
AI specifications		AMD dedicated AI XDNA Technology
NPU + CPU + iGPU

Memory & PCIe

Wischen	AMD A8-7100	AMD Ryzen 7 7840U
Memory	DDR3-1600 (25.6 GB/s)	LPDDR5X-7500 (120.0 GB/s) LPDDR5-6400 (102.4 GB/s) DDR5-5600 (89.6 GB/s) DDR5-4800 (76.8 GB/s)
Max. Memory		256 GB
Memory channels	2	2
ECC	Yes	Yes
PCIe	3.0 x 16	4.0 x 20
PCIe Bandwidth	15.8 GB/s	39.4 GB/s

Thermal Management

Wischen	AMD A8-7100	AMD Ryzen 7 7840U
TDP	19 W	28 W
TDP (PL2)
TDP up		30 W
TDP down		15 W
T. junction max.		100 °C

Technical details

Wischen	AMD A8-7100	AMD Ryzen 7 7840U
Chip design	Unknown	Monolithic
AES-NI	✓	✓
Operating systems		Windows 10, Windows 11, Linux
Instruction set	x86-64 (64 bit)	x86-64 (64 bit)
ISA extensions	SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4	SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
Release date	Q2/2014	Q2/2023
Release price
Documents		Technical data sheet

User Reviews

Your rating

Here you can rate one or both of the processors. The average rating of AMD A8-7100 is 3.4 stars (5 ratings), while AMD Ryzen 7 7840U has received 4.7 stars (107 ratings).

Click on the stars to rate one or both processors.

AMD A8-7100
4C / 4T · 1.80 - 3.00 GHz

★★★★★

AMD Ryzen 7 7840U
8C / 16T · 3.30 - 5.10 GHz

★★★★★