Intel Core i7-3820 vs AMD Phenom II X6 1045T

Comparative analysis of Intel Core i7-3820 and AMD Phenom II X6 1045T 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 X6 1045T

Differences

Reasons to consider the Intel Core i7-3820

CPU is newer: launch date 1 year(s) 5 month(s) later
Around 19% higher clock speed: 3.80 GHz vs 3.2 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 36% better performance in PassMark - Single thread mark: 1745 vs 1282
Around 80% better performance in PassMark - CPU mark: 5767 vs 3200
5.9x better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 84.218 vs 14.359
2.2x better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.606 vs 0.277
6x better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 2.267 vs 0.376
Around 6% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 5.758 vs 5.413

Specifications (specs)
Launch date	February 2012 vs September 2010
Maximum frequency	3.80 GHz vs 3.2 GHz
Manufacturing process technology	32 nm vs 45 nm
L3 cache	10240 KB (shared) vs 6 MB
Benchmarks
PassMark - Single thread mark	1745 vs 1282
PassMark - CPU mark	5767 vs 3200
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	84.218 vs 14.359
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.606 vs 0.277
CompuBench 1.5 Desktop - Video Composition (Frames/s)	2.267 vs 0.376
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	5.758 vs 5.413

Reasons to consider the AMD Phenom II X6 1045T

2 more cores, run more applications at once: 6 vs 4
Around 6% higher maximum core temperature: 71°C vs 66.8°C
3x more L1 cache, more data can be stored in the L1 cache for quick access later
3x 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
2.5x better performance in Geekbench 4 - Single Core: 1915 vs 756
2.3x better performance in Geekbench 4 - Multi-Core: 7420 vs 3163
Around 13% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 5.255 vs 4.665

Specifications (specs)
Number of cores	6 vs 4
Maximum core temperature	71°C vs 66.8°C
L1 cache	768 KB vs 64 KB (per core)
L2 cache	3 MB vs 256 KB (per core)
Thermal Design Power (TDP)	95 Watt vs 130 Watt
Benchmarks
Geekbench 4 - Single Core	1915 vs 756
Geekbench 4 - Multi-Core	7420 vs 3163
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	5.255 vs 4.665

Compare benchmarks

CPU 1: Intel Core i7-3820
CPU 2: AMD Phenom II X6 1045T

PassMark - Single thread mark

CPU 1

CPU 2

1745

1282

PassMark - CPU mark

CPU 1

CPU 2

5767

3200

Geekbench 4 - Single Core

CPU 1

CPU 2

756

1915

Geekbench 4 - Multi-Core

CPU 1

CPU 2

3163

7420

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

4.665

5.255

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

CPU 1

CPU 2

84.218

14.359

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

CPU 1

CPU 2

0.606

0.277

CompuBench 1.5 Desktop - Video Composition (Frames/s)

CPU 1

CPU 2

2.267

0.376

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

5.758

5.413

Name	Intel Core i7-3820	AMD Phenom II X6 1045T
PassMark - Single thread mark	1745	1282
PassMark - CPU mark	5767	3200
Geekbench 4 - Single Core	756	1915
Geekbench 4 - Multi-Core	3163	7420
3DMark Fire Strike - Physics Score	3318
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	4.665	5.255
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	84.218	14.359
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.606	0.277
CompuBench 1.5 Desktop - Video Composition (Frames/s)	2.267	0.376
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	5.758	5.413

Compare specifications (specs)

	Intel Core i7-3820	AMD Phenom II X6 1045T
Essentials
Architecture codename	Sandy Bridge E	Thuban
Launch date	February 2012	September 2010
Launch price (MSRP)	$400	$175
Place in performance rating	2232	2233
Price now	$199.99	$175
Processor Number	i7-3820
Series	Intel® Core™ X-series Processors	AMD Phenom II X6
Status	Discontinued
Value for money (0-100)	13.26	8.11
Vertical segment	Desktop	Desktop
Family		AMD Phenom
OPN PIB		HDT45TWFGRBOX
OPN Tray		HDT45TWFK6DGR
Performance
64 bit support
Base frequency	3.60 GHz	2.7 GHz
Bus Speed	5 GT/s DMI2
Die size	294 mm	346 mm
L1 cache	64 KB (per core)	768 KB
L2 cache	256 KB (per core)	3 MB
L3 cache	10240 KB (shared)	6 MB
Manufacturing process technology	32 nm	45 nm
Maximum case temperature (TCase)	67 °C
Maximum core temperature	66.8°C	71°C
Maximum frequency	3.80 GHz	3.2 GHz
Number of cores	4	6
Number of threads	8
Transistor count	1270 million	904 million
VID voltage range	0.600V – 1.350V
Unlocked
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)