Intel Core 2 Quad Q9400 vs Intel Pentium D 940

Comparative analysis of Intel Core 2 Quad Q9400 and Intel Pentium D 940 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, 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 2 Quad Q9400

Intel Pentium D 940

Differences

Reasons to consider the Intel Core 2 Quad Q9400

CPU is newer: launch date 2 year(s) 7 month(s) later
2 more cores, run more applications at once: 4 vs 2
A newer manufacturing process allows for a more powerful, yet cooler running processor: 45 nm vs 65 nm
9.1x 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
Around 87% better performance in PassMark - Single thread mark: 1138 vs 609
3.9x better performance in PassMark - CPU mark: 2132 vs 552
2x better performance in Geekbench 4 - Single Core: 376 vs 186
3.7x better performance in Geekbench 4 - Multi-Core: 1151 vs 309

Specifications (specs)
Launch date	August 2008 vs January 2006
Number of cores	4 vs 2
Manufacturing process technology	45 nm vs 65 nm
L1 cache	256 KB vs 28 KB
L2 cache	6144 KB vs 4096 KB
Thermal Design Power (TDP)	95 Watt vs 130 Watt
Benchmarks
PassMark - Single thread mark	1138 vs 609
PassMark - CPU mark	2132 vs 552
Geekbench 4 - Single Core	376 vs 186
Geekbench 4 - Multi-Core	1151 vs 309

Reasons to consider the Intel Pentium D 940

Around 20% higher clock speed: 3.2 GHz vs 2.67 GHz

Maximum frequency	3.2 GHz vs 2.67 GHz
Max number of CPUs in a configuration	2 vs 1

Compare benchmarks

CPU 1: Intel Core 2 Quad Q9400
CPU 2: Intel Pentium D 940

PassMark - Single thread mark

CPU 1

CPU 2

1138

609

PassMark - CPU mark

CPU 1

CPU 2

2132

552

Geekbench 4 - Single Core

CPU 1

CPU 2

376

186

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1151

309

Name	Intel Core 2 Quad Q9400	Intel Pentium D 940
PassMark - Single thread mark	1138	609
PassMark - CPU mark	2132	552
Geekbench 4 - Single Core	376	186
Geekbench 4 - Multi-Core	1151	309
3DMark Fire Strike - Physics Score	0
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	0.574
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	26.509
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.136
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.094
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.189

Compare specifications (specs)

	Intel Core 2 Quad Q9400	Intel Pentium D 940
Essentials
Architecture codename	Yorkfield	Presler
Launch date	August 2008	January 2006
Place in performance rating	3118	3134
Price now	$33.98
Processor Number	Q9400	940
Series	Legacy Intel® Core™ Processors	Legacy Intel® Pentium® Processor
Status	Discontinued	Discontinued
Value for money (0-100)	28.99
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	2.66 GHz	3.20 GHz
Bus Speed	1333 MHz FSB	800 MHz FSB
Die size	164 mm2	162 mm2
L1 cache	256 KB	28 KB
L2 cache	6144 KB	4096 KB
Manufacturing process technology	45 nm	65 nm
Maximum case temperature (TCase)	71 °C
Maximum core temperature	71.4°C	B1=68.6°C, C1=63.4°C
Maximum frequency	2.67 GHz	3.2 GHz
Number of cores	4	2
Transistor count	456 million	376 million
VID voltage range	0.8500V-1.3625V	1.200V-1.3375V
Memory
Supported memory types	DDR1, DDR2, DDR3	DDR1, DDR2, DDR3
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	2
Package Size	37.5mm x 37.5mm	37.5mm x 37.5mm
Sockets supported	LGA775	PLGA775
Thermal Design Power (TDP)	95 Watt	130 Watt
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
FSB parity
Idle States
Intel 64
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Thermal Monitoring
Physical Address Extensions (PAE)		32-bit
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)