Intel Pentium G620 vs Intel Core 2 Quad Q8400

Comparative analysis of Intel Pentium G620 and Intel Core 2 Quad Q8400 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Graphics interfaces, 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, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s).

Intel Pentium G620

Intel Core 2 Quad Q8400

Differences

Reasons to consider the Intel Pentium G620

CPU is newer: launch date 2 year(s) 0 month(s) later
A newer manufacturing process allows for a more powerful, yet cooler running processor: 32 nm vs 45 nm
Around 46% lower typical power consumption: 65 Watt vs 95 Watt
Around 3% better performance in PassMark - Single thread mark: 1181 vs 1142
Around 27% better performance in Geekbench 4 - Single Core: 458 vs 362
Around 82% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 1.11 vs 0.609
Around 30% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 26.661 vs 20.494
Around 2% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.174 vs 0.171

Specifications (specs)
Launch date	May 2011 vs April 2009
Manufacturing process technology	32 nm vs 45 nm
Thermal Design Power (TDP)	65 Watt vs 95 Watt
Benchmarks
PassMark - Single thread mark	1181 vs 1142
Geekbench 4 - Single Core	458 vs 362
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	1.11 vs 0.609
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	26.661 vs 20.494
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.174 vs 0.171

Reasons to consider the Intel Core 2 Quad Q8400

2 more cores, run more applications at once: 4 vs 2
Around 3% higher clock speed: 2.67 GHz vs 2.6 GHz
Around 3% higher maximum core temperature: 71.4°C vs 69.1°C
2x more L1 cache, more data can be stored in the L1 cache for quick access later
8x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 70% better performance in PassMark - CPU mark: 2064 vs 1213
Around 37% better performance in Geekbench 4 - Multi-Core: 1139 vs 832
3.1x better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 4.93 vs 1.599
Around 68% better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 1.4 vs 0.831

Specifications (specs)
Number of cores	4 vs 2
Maximum frequency	2.67 GHz vs 2.6 GHz
Maximum core temperature	71.4°C vs 69.1°C
L1 cache	256 KB vs 64 KB (per core)
L2 cache	4096 KB vs 256 KB (per core)
Benchmarks
PassMark - CPU mark	2064 vs 1213
Geekbench 4 - Multi-Core	1139 vs 832
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.93 vs 1.599
CompuBench 1.5 Desktop - Video Composition (Frames/s)	1.4 vs 0.831

Compare benchmarks

CPU 1: Intel Pentium G620
CPU 2: Intel Core 2 Quad Q8400

PassMark - Single thread mark

CPU 1

CPU 2

1181

1142

PassMark - CPU mark

CPU 1

CPU 2

1213

2064

Geekbench 4 - Single Core

CPU 1

CPU 2

458

362

Geekbench 4 - Multi-Core

CPU 1

CPU 2

832

1139

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

1.11

0.609

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

CPU 1

CPU 2

26.661

20.494

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

1.599

4.93

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

CPU 1

CPU 2

0.174

0.171

CompuBench 1.5 Desktop - Video Composition (Frames/s)

CPU 1

CPU 2

0.831

1.4

Name	Intel Pentium G620	Intel Core 2 Quad Q8400
PassMark - Single thread mark	1181	1142
PassMark - CPU mark	1213	2064
Geekbench 4 - Single Core	458	362
Geekbench 4 - Multi-Core	832	1139
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	1.11	0.609
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	26.661	20.494
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	1.599	4.93
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.174	0.171
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.831	1.4

Compare specifications (specs)

	Intel Pentium G620	Intel Core 2 Quad Q8400
Essentials
Architecture codename	Sandy Bridge	Yorkfield
Launch date	May 2011	April 2009
Launch price (MSRP)	$60
Place in performance rating	3003	3007
Price now	$24.99	$99.50
Processor Number	G620	Q8400
Series	Legacy Intel® Pentium® Processor	Legacy Intel® Core™ Processors
Status	Discontinued	Discontinued
Value for money (0-100)	27.01	9.38
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	2.60 GHz	2.66 GHz
Bus Speed	5 GT/s DMI	1333 MHz FSB
Die size	131 mm	164 mm2
L1 cache	64 KB (per core)	256 KB
L2 cache	256 KB (per core)	4096 KB
L3 cache	3072 KB (shared)
Manufacturing process technology	32 nm	45 nm
Maximum core temperature	69.1°C	71.4°C
Maximum frequency	2.6 GHz	2.67 GHz
Number of cores	2	4
Number of threads	2
Transistor count	504 million	456 million
Maximum case temperature (TCase)		71 °C
VID voltage range		0.8500V-1.3625V
Memory
Max memory channels	2
Maximum memory bandwidth	17 GB/s
Maximum memory size	32 GB
Supported memory types	DDR3 1066	DDR1, DDR2, DDR3
Graphics
Graphics base frequency	850 MHz
Graphics max dynamic frequency	1.10 GHz
Graphics max frequency	1.1 GHz
Intel® Clear Video HD technology
Intel® Flexible Display Interface (Intel® FDI)
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Processor graphics	Intel HD Graphics
Graphics interfaces
Number of displays supported	2
Wireless Display (WiDi) support
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	37.5mm x 37.5mm	37.5mm x 37.5mm
Sockets supported	FCLGA1155	LGA775
Thermal Design Power (TDP)	65 Watt	95 Watt
Peripherals
PCI Express revision	2.0
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Flexible Display interface (FDI)
Idle States
Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2
Intel 64
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Fast Memory Access
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® Optane™ Memory Supported
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Thermal Monitoring
FSB parity
Intel® Demand Based Switching
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)