Intel Core 2 Extreme QX9650 vs Intel Pentium 4 HT 660

Comparative analysis of Intel Core 2 Extreme QX9650 and Intel Pentium 4 HT 660 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, 3DMark Fire Strike - Physics Score.

Intel Core 2 Extreme QX9650

Intel Pentium 4 HT 660

Differences

Reasons to consider the Intel Core 2 Extreme QX9650

CPU is newer: launch date 2 year(s) 9 month(s) later
Processor is unlocked, an unlocked multiplier allows for easier overclocking
3 more cores, run more applications at once: 4 vs 1
A newer manufacturing process allows for a more powerful, yet cooler running processor: 45 nm vs 90 nm
9.1x more L1 cache, more data can be stored in the L1 cache for quick access later
6x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 32% better performance in Geekbench 4 - Multi-Core: 1463 vs 1106

Specifications (specs)
Launch date	November 2007 vs February 2005
Unlocked	Unlocked vs Locked
Number of cores	4 vs 1
Manufacturing process technology	45 nm vs 90 nm
L1 cache	256 KB vs 28 KB
L2 cache	12288 KB vs 2048 KB
Benchmarks
Geekbench 4 - Multi-Core	1463 vs 1106

Reasons to consider the Intel Pentium 4 HT 660

Around 20% higher clock speed: 3.6 GHz vs 3 GHz
Around 10% higher maximum core temperature: 70.8°C vs 64.5°C
Around 13% lower typical power consumption: 115 Watt vs 130 Watt
2.1x better performance in Geekbench 4 - Single Core: 975 vs 465

Specifications (specs)
Maximum frequency	3.6 GHz vs 3 GHz
Maximum core temperature	70.8°C vs 64.5°C
Thermal Design Power (TDP)	115 Watt vs 130 Watt
Benchmarks
Geekbench 4 - Single Core	975 vs 465

Compare benchmarks

CPU 1: Intel Core 2 Extreme QX9650
CPU 2: Intel Pentium 4 HT 660

Geekbench 4 - Single Core

CPU 1

CPU 2

465

975

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1463

1106

Name	Intel Core 2 Extreme QX9650	Intel Pentium 4 HT 660
Geekbench 4 - Single Core	465	975
Geekbench 4 - Multi-Core	1463	1106
3DMark Fire Strike - Physics Score	4864

Compare specifications (specs)

	Intel Core 2 Extreme QX9650	Intel Pentium 4 HT 660
Essentials
Architecture codename	Yorkfield	Prescott
Launch date	November 2007	February 2005
Place in performance rating	2276	2286
Processor Number	QX9650	660
Series	Legacy Intel® Core™ Processors	Legacy Intel® Pentium® Processor
Status	Discontinued	Discontinued
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	3.00 GHz	3.60 GHz
Bus Speed	1333 MHz FSB	800 MHz FSB
Die size	214 mm2	135 mm2
L1 cache	256 KB	28 KB
L2 cache	12288 KB	2048 KB
Manufacturing process technology	45 nm	90 nm
Maximum case temperature (TCase)	64 °C
Maximum core temperature	64.5°C	70.8°C
Maximum frequency	3 GHz	3.6 GHz
Number of cores	4	1
Transistor count	820 million	169 million
Unlocked
VID voltage range	0.8500V-1.3625V	1.200V-1.400V
Memory
Supported memory types	DDR1, DDR2, DDR3	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	LGA775	PLGA775, PPGA775
Thermal Design Power (TDP)	130 Watt	115 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)