Intel Core 2 Extreme QX9775 vs Intel Core 2 Quad Q9450

Comparative analysis of Intel Core 2 Extreme QX9775 and Intel Core 2 Quad Q9450 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, 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 Extreme QX9775

Intel Core 2 Quad Q9450

Differences

Reasons to consider the Intel Core 2 Extreme QX9775

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

Maximum frequency	3.2 GHz vs 2.67 GHz

Reasons to consider the Intel Core 2 Quad Q9450

Around 13% higher maximum core temperature: 71.4°C vs 63°C
2x more L1 cache, more data can be stored in the L1 cache for quick access later
Around 58% lower typical power consumption: 95 Watt vs 150 Watt

Maximum core temperature	71.4°C vs 63°C
L1 cache	256 KB vs 128 KB
Thermal Design Power (TDP)	95 Watt vs 150 Watt

Compare benchmarks

CPU 1: Intel Core 2 Extreme QX9775
CPU 2: Intel Core 2 Quad Q9450

Name	Intel Core 2 Extreme QX9775	Intel Core 2 Quad Q9450
PassMark - Single thread mark		1127
PassMark - CPU mark		2187
Geekbench 4 - Single Core		403
Geekbench 4 - Multi-Core		1322
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		0.573
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		31.997
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.177
CompuBench 1.5 Desktop - Video Composition (Frames/s)		1.154
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		4.249

Compare specifications (specs)

	Intel Core 2 Extreme QX9775	Intel Core 2 Quad Q9450
Essentials
Architecture codename	Yorkfield	Yorkfield
Launch date	March 2008	March 2008
Place in performance rating	not rated	2980
Processor Number	QX9775	Q9450
Series	Legacy Intel® Core™ Processors	Legacy Intel® Core™ Processors
Status	Discontinued	Discontinued
Vertical segment	Desktop	Desktop
Price now		$335
Value for money (0-100)		3.31
Performance
64 bit support
Base frequency	3.20 GHz	2.66 GHz
Bus Speed	1600 MHz FSB	1333 MHz FSB
Die size	214 mm2	214 mm2
L1 cache	128 KB	256 KB
L2 cache	12288 KB	12288 KB
Manufacturing process technology	45 nm	45 nm
Maximum case temperature (TCase)	63 °C	71 °C
Maximum core temperature	63°C	71.4°C
Maximum frequency	3.2 GHz	2.67 GHz
Number of cores	4	4
Transistor count	820 million	820 million
VID voltage range	0.850V-1.3500V	0.8500V-1.3625V
Memory
Supported memory types	DDR2	DDR1, DDR2, DDR3
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	LGA771	LGA775
Thermal Design Power (TDP)	150 Watt	95 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
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)