AMD Athlon II X4 645 vs AMD Sempron 145

Comparative analysis of AMD Athlon II X4 645 and AMD Sempron 145 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s).

AMD Athlon II X4 645

AMD Sempron 145

Differences

Reasons to consider the AMD Athlon II X4 645

3 more cores, run more applications at once: 4 vs 1
Around 11% higher clock speed: 3.1 GHz vs 2.8 GHz
4x more L1 cache, more data can be stored in the L1 cache for quick access later
2x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 24% better performance in PassMark - Single thread mark: 1256 vs 1015
4.5x better performance in PassMark - CPU mark: 2348 vs 518
Around 15% better performance in Geekbench 4 - Single Core: 375 vs 325
3.8x better performance in Geekbench 4 - Multi-Core: 1215 vs 317

Specifications (specs)
Number of cores	4 vs 1
Maximum frequency	3.1 GHz vs 2.8 GHz
L1 cache	128 KB (per core) vs 128 KB (per core)
L2 cache	512 KB (per core) vs 1024 KB (per core)
Benchmarks
PassMark - Single thread mark	1256 vs 1015
PassMark - CPU mark	2348 vs 518
Geekbench 4 - Single Core	375 vs 325
Geekbench 4 - Multi-Core	1215 vs 317

Reasons to consider the AMD Sempron 145

2.1x lower typical power consumption: 45 Watt vs 95 Watt

Thermal Design Power (TDP)	45 Watt vs 95 Watt

Compare benchmarks

CPU 1: AMD Athlon II X4 645
CPU 2: AMD Sempron 145

PassMark - Single thread mark

CPU 1

CPU 2

1256

1015

PassMark - CPU mark

CPU 1

CPU 2

2348

518

Geekbench 4 - Single Core

CPU 1

CPU 2

375

325

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1215

317

Name	AMD Athlon II X4 645	AMD Sempron 145
PassMark - Single thread mark	1256	1015
PassMark - CPU mark	2348	518
Geekbench 4 - Single Core	375	325
Geekbench 4 - Multi-Core	1215	317
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	2.103
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	9.496

Compare specifications (specs)

	AMD Athlon II X4 645	AMD Sempron 145
Essentials
Architecture codename	Propus	Sargas
Launch date	September 2010	September 2010
Launch price (MSRP)	$80	$95
Place in performance rating	2764	2750
Price now	$49.99	$16.98
Value for money (0-100)	20.48	14.02
Vertical segment	Desktop	Desktop
Performance
64 bit support
Die size	169 mm	117 mm
L1 cache	128 KB (per core)	128 KB (per core)
L2 cache	512 KB (per core)	1024 KB (per core)
Manufacturing process technology	45 nm	45 nm
Maximum frequency	3.1 GHz	2.8 GHz
Number of cores	4	1
Transistor count	300 million	234 million
Memory
Supported memory types	DDR3	DDR3
Compatibility
Max number of CPUs in a configuration	1	1
Sockets supported	AM3	AM3
Thermal Design Power (TDP)	95 Watt	45 Watt