AMD Ryzen 9 7945HX vs Intel Core i7-3820

Comparative analysis of AMD Ryzen 9 7945HX and Intel Core i7-3820 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, 3DMark Fire Strike - Physics Score, 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 - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s).

AMD Ryzen 9 7945HX

Intel Core i7-3820

Differences

Reasons to consider the AMD Ryzen 9 7945HX

CPU is newer: launch date 10 year(s) 11 month(s) later
Processor is unlocked, an unlocked multiplier allows for easier overclocking
12 more cores, run more applications at once: 16 vs 4
24 more threads: 32 vs 8
Around 42% higher clock speed: 5.4 GHz vs 3.80 GHz
Around 50% higher maximum core temperature: 100°C vs 66.8°C
A newer manufacturing process allows for a more powerful, yet cooler running processor: 5 nm vs 32 nm
4x more L1 cache, more data can be stored in the L1 cache for quick access later
2.4x lower typical power consumption: 55 Watt vs 130 Watt
2.3x better performance in PassMark - Single thread mark: 4057 vs 1744
9.5x better performance in PassMark - CPU mark: 54840 vs 5779
4.1x better performance in 3DMark Fire Strike - Physics Score: 13727 vs 3318

Specifications (specs)
Launch date	4 Jan 2023 vs February 2012
Unlocked	Unlocked vs Locked
Number of cores	16 vs 4
Number of threads	32 vs 8
Maximum frequency	5.4 GHz vs 3.80 GHz
Maximum core temperature	100°C vs 66.8°C
Manufacturing process technology	5 nm vs 32 nm
L1 cache	64K (per core) vs 64 KB (per core)
Thermal Design Power (TDP)	55 Watt vs 130 Watt
Benchmarks
PassMark - Single thread mark	4057 vs 1744
PassMark - CPU mark	54840 vs 5779
3DMark Fire Strike - Physics Score	13727 vs 3318

Reasons to consider the Intel Core i7-3820

65536x more L2 cache, more data can be stored in the L2 cache for quick access later
163840x more L3 cache, more data can be stored in the L3 cache for quick access later

L2 cache	256 KB (per core) vs 1MB (per core)
L3 cache	10240 KB (shared) vs 64MB (shared)

Compare benchmarks

CPU 1: AMD Ryzen 9 7945HX
CPU 2: Intel Core i7-3820

PassMark - Single thread mark

CPU 1

CPU 2

4057

1744

PassMark - CPU mark

CPU 1

CPU 2

54840

5779

3DMark Fire Strike - Physics Score

CPU 1

CPU 2

13727

3318

Name	AMD Ryzen 9 7945HX	Intel Core i7-3820
PassMark - Single thread mark	4057	1744
PassMark - CPU mark	54840	5779
3DMark Fire Strike - Physics Score	13727	3318
Geekbench 4 - Single Core		756
Geekbench 4 - Multi-Core		3163
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)

	AMD Ryzen 9 7945HX	Intel Core i7-3820
Essentials
Architecture codename	Zen 4	Sandy Bridge E
Launch date	4 Jan 2023	February 2012
Place in performance rating	76	2236
Launch price (MSRP)		$400
Price now		$199.99
Processor Number		i7-3820
Series		Intel® Core™ X-series Processors
Status		Discontinued
Value for money (0-100)		13.26
Vertical segment		Desktop
Performance
Base frequency	2.5 GHz	3.60 GHz
Die size	2x 71 mm²	294 mm
L1 cache	64K (per core)	64 KB (per core)
L2 cache	1MB (per core)	256 KB (per core)
L3 cache	64MB (shared)	10240 KB (shared)
Manufacturing process technology	5 nm	32 nm
Maximum core temperature	100°C	66.8°C
Maximum frequency	5.4 GHz	3.80 GHz
Number of cores	16	4
Number of threads	32	8
Transistor count	13,140 million	1270 million
Unlocked
64 bit support
Bus Speed		5 GT/s DMI2
Maximum case temperature (TCase)		67 °C
VID voltage range		0.600V – 1.350V
Memory
ECC memory support
Supported memory types	DDR5-5200 MHz, Dual-channel	DDR3 1066/1333/1600
Max memory channels		4
Maximum memory bandwidth		51.2 GB/s
Maximum memory size		64.23 GB
Compatibility
Configurable TDP	55-75 W
Max number of CPUs in a configuration	1	1
Sockets supported	FL1	FCLGA2011
Thermal Design Power (TDP)	55 Watt	130 Watt
Low Halogen Options Available
Package Size		52.5mm x 45.0mm
Peripherals
PCIe configurations	Gen 5, 28 Lanes, (CPU only)
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)