Intel Core i7-3820 vs AMD Phenom II X3 B73

Comparative analysis of Intel Core i7-3820 and AMD Phenom II X3 B73 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, 3DMark Fire Strike - Physics Score, 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 - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s).

Intel Core i7-3820

AMD Phenom II X3 B73

Differences

Reasons to consider the Intel Core i7-3820

CPU is newer: launch date 2 year(s) 4 month(s) later
1 more cores, run more applications at once: 4 vs 3
Around 36% higher clock speed: 3.80 GHz vs 2.8 GHz
A newer manufacturing process allows for a more powerful, yet cooler running processor: 32 nm vs 45 nm
Around 67% more L3 cache; more data can be stored in the L3 cache for quick access later
Around 65% better performance in PassMark - Single thread mark: 1745 vs 1056
3.8x better performance in PassMark - CPU mark: 5769 vs 1538

Specifications (specs)
Launch date	February 2012 vs October 2009
Number of cores	4 vs 3
Maximum frequency	3.80 GHz vs 2.8 GHz
Manufacturing process technology	32 nm vs 45 nm
L3 cache	10240 KB (shared) vs 6144 KB (shared)
Benchmarks
PassMark - Single thread mark	1745 vs 1056
PassMark - CPU mark	5769 vs 1538

Reasons to consider the AMD Phenom II X3 B73

Around 50% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 50% more L2 cache; more data can be stored in the L2 cache for quick access later
Around 37% lower typical power consumption: 95 Watt vs 130 Watt

L1 cache	128 KB (per core) vs 64 KB (per core)
L2 cache	512 KB (per core) vs 256 KB (per core)
Thermal Design Power (TDP)	95 Watt vs 130 Watt

Compare benchmarks

CPU 1: Intel Core i7-3820
CPU 2: AMD Phenom II X3 B73

PassMark - Single thread mark

CPU 1

CPU 2

1745

1056

PassMark - CPU mark

CPU 1

CPU 2

5769

1538

Name	Intel Core i7-3820	AMD Phenom II X3 B73
PassMark - Single thread mark	1745	1056
PassMark - CPU mark	5769	1538
Geekbench 4 - Single Core	756
Geekbench 4 - Multi-Core	3163
3DMark Fire Strike - Physics Score	3318
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	4.665
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	84.218
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.606
CompuBench 1.5 Desktop - Video Composition (Frames/s)	2.267
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	5.758

Compare specifications (specs)

	Intel Core i7-3820	AMD Phenom II X3 B73
Essentials
Architecture codename	Sandy Bridge E	Heka
Launch date	February 2012	October 2009
Launch price (MSRP)	$400	$75
Place in performance rating	2232	2221
Price now	$199.99	$75
Processor Number	i7-3820
Series	Intel® Core™ X-series Processors
Status	Discontinued
Value for money (0-100)	13.26	10.75
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	3.60 GHz
Bus Speed	5 GT/s DMI2
Die size	294 mm	258 mm
L1 cache	64 KB (per core)	128 KB (per core)
L2 cache	256 KB (per core)	512 KB (per core)
L3 cache	10240 KB (shared)	6144 KB (shared)
Manufacturing process technology	32 nm	45 nm
Maximum case temperature (TCase)	67 °C
Maximum core temperature	66.8°C
Maximum frequency	3.80 GHz	2.8 GHz
Number of cores	4	3
Number of threads	8
Transistor count	1270 million	758 million
VID voltage range	0.600V – 1.350V
Memory
Max memory channels	4
Maximum memory bandwidth	51.2 GB/s
Maximum memory size	64.23 GB
Supported memory types	DDR3 1066/1333/1600	DDR3
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	52.5mm x 45.0mm
Sockets supported	FCLGA2011	AM3
Thermal Design Power (TDP)	130 Watt	95 Watt
Peripherals
Max number of PCIe lanes	40
PCI Express revision	2.0
Security & Reliability
Execute Disable Bit (EDB)
Intel® Identity Protection technology
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions	Intel® SSE4.2, Intel® AVX
Intel 64
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Smart Response technology
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Thermal Monitoring
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)