AMD Phenom II X4 840 vs AMD Phenom II X4 945 (125W)

Comparative analysis of AMD Phenom II X4 840 and AMD Phenom II X4 945 (125W) 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), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), CompuBench 1.5 Desktop - Video Composition (Frames/s).

AMD Phenom II X4 840

AMD Phenom II X4 945 (125W)

Differences

Reasons to consider the AMD Phenom II X4 840

CPU is newer: launch date 1 year(s) 9 month(s) later
Around 7% higher clock speed: 3.2 GHz vs 3 GHz
Around 32% lower typical power consumption: 95 Watt vs 125 Watt

Launch date	January 2011 vs April 2009
Maximum frequency	3.2 GHz vs 3 GHz
Thermal Design Power (TDP)	95 Watt vs 125 Watt

Reasons to consider the AMD Phenom II X4 945 (125W)

Around 22% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 3.576 vs 2.92
Around 63% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 14.5 vs 8.884
Around 33% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.212 vs 0.159
Around 5% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 4.125 vs 3.91

Benchmarks
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	3.576 vs 2.92
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	14.5 vs 8.884
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.212 vs 0.159
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.125 vs 3.91

Compare benchmarks

CPU 1: AMD Phenom II X4 840
CPU 2: AMD Phenom II X4 945 (125W)

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

2.92

3.576

CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)

CPU 1

CPU 2

8.884

14.5

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

CPU 1

CPU 2

0.159

0.212

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

3.91

4.125

Name	AMD Phenom II X4 840	AMD Phenom II X4 945 (125W)
PassMark - Single thread mark	1299
PassMark - CPU mark	2425
Geekbench 4 - Single Core	391
Geekbench 4 - Multi-Core	1325
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	2.92	3.576
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	8.884	14.5
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.159	0.212
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	3.91	4.125
CompuBench 1.5 Desktop - Video Composition (Frames/s)		0.394

Compare specifications (specs)

	AMD Phenom II X4 840	AMD Phenom II X4 945 (125W)
Essentials
Architecture codename	Propus	Deneb
Family	AMD Phenom
Launch date	January 2011	April 2009
Launch price (MSRP)	$90
OPN PIB	HDX840WFGMBOX
OPN Tray	HDX840WFK42GM
Place in performance rating	2870	3280
Price now	$89.95
Series	AMD Phenom II X4
Value for money (0-100)	11.50
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	3.2 GHz
Die size	169 mm	258 mm
L1 cache	512 KB	128 KB (per core)
L2 cache	2 MB	512 KB (per core)
Manufacturing process technology	45 nm	45 nm
Maximum core temperature	71°C
Maximum frequency	3.2 GHz	3 GHz
Number of cores	4	4
Number of threads	4
Transistor count	300 million	758 million
Unlocked
L3 cache		6144 KB (shared)
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	125 Watt