AMD Athlon X4 740 vs AMD Athlon X4 845

Comparative analysis of AMD Athlon X4 740 and AMD Athlon X4 845 processors for all known characteristics in the following categories: Essentials, Performance, Compatibility, Memory, Peripherals, Advanced Technologies. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s).

AMD Athlon X4 740

AMD Athlon X4 845

Differences

Reasons to consider the AMD Athlon X4 740

2x more L2 cache, more data can be stored in the L2 cache for quick access later

L2 cache	4 MB vs 2 MB

Reasons to consider the AMD Athlon X4 845

Around 3% higher clock speed: 3.8 GHz vs 3.7 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 28 nm vs 32 nm
Around 23% better performance in PassMark - Single thread mark: 1665 vs 1355
Around 43% better performance in PassMark - CPU mark: 3783 vs 2637
Around 14% better performance in Geekbench 4 - Single Core: 516 vs 452
Around 27% better performance in Geekbench 4 - Multi-Core: 1548 vs 1215
Around 12% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.244 vs 0.217
Around 11% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 4.237 vs 3.815

Specifications (specs)
Maximum frequency	3.8 GHz vs 3.7 GHz
Manufacturing process technology	28 nm vs 32 nm
Benchmarks
PassMark - Single thread mark	1665 vs 1355
PassMark - CPU mark	3783 vs 2637
Geekbench 4 - Single Core	516 vs 452
Geekbench 4 - Multi-Core	1548 vs 1215
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.244 vs 0.217
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.237 vs 3.815

Compare benchmarks

CPU 1: AMD Athlon X4 740
CPU 2: AMD Athlon X4 845

PassMark - Single thread mark

CPU 1

CPU 2

1355

1665

PassMark - CPU mark

CPU 1

CPU 2

2637

3783

Geekbench 4 - Single Core

CPU 1

CPU 2

452

516

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1215

1548

CompuBench 1.5 Desktop - T-Rex (Frames/s)

CPU 1

CPU 2

0.217

0.244

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

3.815

4.237

Name	AMD Athlon X4 740	AMD Athlon X4 845
PassMark - Single thread mark	1355	1665
PassMark - CPU mark	2637	3783
Geekbench 4 - Single Core	452	516
Geekbench 4 - Multi-Core	1215	1548
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.217	0.244
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	3.815	4.237
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		3.853
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		11.946

Compare specifications (specs)

	AMD Athlon X4 740	AMD Athlon X4 845
Essentials
Family	AMD Athlon Processors	AMD Athlon Processors
OPN PIB	AD740XOKHJBOX	AD845XACKASBX
OPN Tray	AD740XOKA44HJ
Place in performance rating	2642	2643
Series	AMD Athlon X4	AMD Athlon X4
Vertical segment	Desktop	Desktop
Performance
Base frequency	3.2 GHz	3.5 GHz
L2 cache	4 MB	2 MB
Manufacturing process technology	32 nm	28 nm
Maximum frequency	3.7 GHz	3.8 GHz
Number of cores	4	4
Number of threads	4	4
Unlocked
Maximum core temperature		71.30°C
Compatibility
Sockets supported	FM2	FM2+
Thermal Design Power (TDP)	65 Watt
Thermal Solution		Near Silent 95W
Memory
Max memory channels		2
Supported memory frequency		2133 MHz
Supported memory types		DDR3
Peripherals
PCI Express revision		3.0
Advanced Technologies
Fused Multiply-Add 4 (FMA4)
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions