How do the scores compare?

AMD Ryzen 3 3100 scores 31.9/100 overall; Intel Core i5-8400 scores 29/100. AMD Ryzen 3 3100 wins 11 individual spec rows, Intel Core i5-8400 wins 7.

What are the main differences between the AMD Ryzen 3 3100 and the Intel Core i5-8400?

AMD Ryzen 3 3100 advantages: Stronger gaming score: 41 vs 27; 100% higher Max memory: 128 GB vs 64 GB; 78% higher L3 cache: 16 MB vs 9 MB; 50% lower process: 7 nm vs 14 nm; 50% higher CPU PCIe lanes: 24 vs 16; Lower launch price: $99 vs $182. Intel Core i5-8400 advantages: 50% higher cores: 6 vs 4; 50% higher Performance cores: 6 vs 4; 14% higher Geekbench 6 (multi): 4,900 vs 4,300; 10% higher Cinebench R23 (multi): 6,400 vs 5,800.

Which is cheaper: AMD Ryzen 3 3100 or Intel Core i5-8400?

AMD Ryzen 3 3100 launched cheaper at $99, versus $182 for the Intel Core i5-8400.

AMD Ryzen 3 3100 vs Intel Core i5-8400

WINNER

AMD

AMD Ryzen 3 3100

$99

Intel

Intel Core i5-8400

$182

29.7Single-core31.1

28.7Multi-core28.6

40.5Gaming27.2

11 spec wins — AMD Ryzen 3 31007 spec wins — Intel Core i5-8400

InnoReviews verdict

AMD Ryzen 3 3100 wins this desktop processor face-off, 31.9 to 29, pulling ahead mainly in gaming (+13) and Multi-core (+0). Intel Core i5-8400 still makes sense if its price or standout specs fit your needs better.

Which would you pick?

Key differences

Reasons to pick the AMD Ryzen 3 3100

Stronger gaming score: 41 vs 27
100% higher Max memory: 128 GB vs 64 GB
78% higher L3 cache: 16 MB vs 9 MB
50% lower process: 7 nm vs 14 nm
50% higher CPU PCIe lanes: 24 vs 16
Lower launch price: $99 vs $182

Reasons to pick the Intel Core i5-8400

50% higher cores: 6 vs 4
50% higher Performance cores: 6 vs 4
14% higher Geekbench 6 (multi): 4,900 vs 4,300
10% higher Cinebench R23 (multi): 6,400 vs 5,800

General

General comparison: AMD Ryzen 3 3100 versus Intel Core i5-8400
Spec	AMD Ryzen 3 3100	Intel Core i5-8400
Announced	2020	2017
Socket	AM4	LGA1151-v2
Process	7 nm+50%	14 nm
Base TDP	65 W	65 W
Max turbo power	88 W	—
Unlocked multiplier	Yes	No
Cooler included	Yes	Yes

Cores & Clocks

Cores & Clocks comparison: AMD Ryzen 3 3100 versus Intel Core i5-8400
Spec	AMD Ryzen 3 3100	Intel Core i5-8400
Cores	4	6+50%
Performance cores	4	6+50%
Efficiency cores	0	0
Threads	8+33%	6
Base clock	3.6 GHz+29%	2.8 GHz
Boost clock	3.9 GHz	4 GHz+3%
L2 cache	2 MB+33%	2 MB
L3 cache	16 MB+78%	9 MB

Integrated GPU

Integrated GPU comparison: AMD Ryzen 3 3100 versus Intel Core i5-8400
Spec	AMD Ryzen 3 3100	Intel Core i5-8400
iGPU	—	Intel UHD Graphics 630
iGPU clock	—	1,050 MHz

Memory

Memory comparison: AMD Ryzen 3 3100 versus Intel Core i5-8400
Spec	AMD Ryzen 3 3100	Intel Core i5-8400
Memory support	DDR4-3200	DDR4-2666
Max memory	128 GB+100%	64 GB
Memory channels	2	2

Platform

Platform comparison: AMD Ryzen 3 3100 versus Intel Core i5-8400
Spec	AMD Ryzen 3 3100	Intel Core i5-8400
PCIe version	4+33%	3
CPU PCIe lanes	24+50%	16

Benchmarks

Benchmarks comparison: AMD Ryzen 3 3100 versus Intel Core i5-8400
Spec	AMD Ryzen 3 3100	Intel Core i5-8400
Geekbench 6 (single)	1,300Top 77%	1,370+5%Top 75%
Geekbench 6 (multi)	4,300Top 83%	4,900+14%Top 78%
Cinebench R23 (single)	1,140Top 76%	1,150+1%Top 75%
Cinebench R23 (multi)	5,800Top 80%	6,400+10%Top 77%
PassMark	11,800+28%Top 75%	9,200Top 80%

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