AMD Athlon X4 840 vs AMD Athlon X4 740 Full Specs

Summary

2 Cores 4 Threads 3.1GHz	2 Cores 4 Threads 3.2GHz
TDP 65W	TDP 65W
Bandwidth 34.1GB/s DDR4	Bandwidth 29.9GB/s DDR3
Socket FM2+	Socket FM2

Core Config

2 Cores	2 Cores
4 Threads	4 Threads

Clocks

Base Clock 3.1GHz	Base Clock 3.2GHz
Boost Clock 3.8GHz	Boost Clock 3.7GHz
Overclocking Locked	Overclocking Locked

Cache

L1i 96KB	L1i 64KB
L1d 16KB	L1d 16KB
L2 2MB	L2 2MB

Memory

Type DDR4	Type DDR3
Max Memory 64GB	Max Memory 32GB
ECC No	ECC No
Channels 2	Channels 2
Bus Width 128-bit	Bus Width 128-bit
Speed 2133MT/s	Speed 1866MT/s
Bandwidth 34.1GB/s	Bandwidth 29.9GB/s
Bandwidth Calculator Channels Transfer Rate2133MT/s UC·Spec·OC 34.1GB/s	Bandwidth Calculator Channels Transfer Rate1866MT/s UC·Spec·OC 29.9GB/s

Power & Thermals

TDP 65W

TDP 65W

Chipset Bus

Bus Type UMI	Bus Type UMI
Bus Config 4 lanes	Bus Config 4 lanes
Bus Speed 4GT/s	Bus Speed 4GT/s
Bus Bandwidth 2GB/s	Bus Bandwidth 2GB/s

Expansion

PCIe PCIe 3.0 x20 19.7GB/sBandwidth

PCIe PCIe 2.0 x20 10GB/sBandwidth

Chip

Manufacturer AMD	Manufacturer AMD
ISA x86-64	ISA x86-64
Architecture Steamroller	Architecture Piledriver
Family Athlon	Family Athlon
Branding	Branding
Codename Kaveri -	Codename Trinity VirgoDie
Market Segment Desktop	Market Segment Desktop
Release Date Aug 1, 2014	Release Date Oct 1, 2012

Fabrication

Foundry GlobalFoundries	Foundry GlobalFoundries
Fabrication Node 28nm	Fabrication Node 32nm
Die Size 245mm²	Die Size 246mm²
Transistor Count 2.4 Billion	Transistor Count 1.3 Billion
Transistor Density 10 MTr/mm²	Transistor Density 5 MTr/mm²

Images

Competitors

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