Intel Pentium 4 HT 661 vs Intel Pentium D 940

Comparative analysis of Intel Pentium 4 HT 661 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.

Intel Pentium 4 HT 661

Intel Pentium D 940

Differences

Reasons to consider the Intel Pentium 4 HT 661

Around 13% higher clock speed: 3.6 GHz vs 3.2 GHz
Around 51% lower typical power consumption: 86 Watt vs 130 Watt

Maximum frequency	3.6 GHz vs 3.2 GHz
Thermal Design Power (TDP)	86 Watt vs 130 Watt

Reasons to consider the Intel Pentium D 940

1 more cores, run more applications at once: 2 vs 1
2x more L2 cache, more data can be stored in the L2 cache for quick access later

Number of cores	2 vs 1
L2 cache	4096 KB vs 2048 KB
Max number of CPUs in a configuration	2 vs 1

Compare benchmarks

CPU 1: Intel Pentium 4 HT 661
CPU 2: Intel Pentium D 940

Name	Intel Pentium 4 HT 661	Intel Pentium D 940
PassMark - Single thread mark		609
PassMark - CPU mark		552
Geekbench 4 - Single Core		186
Geekbench 4 - Multi-Core		309

Compare specifications (specs)

	Intel Pentium 4 HT 661	Intel Pentium D 940
Essentials
Architecture codename	Cedarmill	Presler
Launch date	January 2006	January 2006
Place in performance rating	not rated	3144
Processor Number	661	940
Series	Legacy Intel® Pentium® Processor	Legacy Intel® Pentium® Processor
Status	Discontinued	Discontinued
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	3.60 GHz	3.20 GHz
Bus Speed	800 MHz FSB	800 MHz FSB
Die size	81 mm2	162 mm2
L1 cache	28 KB	28 KB
L2 cache	2048 KB	4096 KB
Manufacturing process technology	65 nm	65 nm
Maximum core temperature	B1+C1=69°C, D0=64.4°C	B1=68.6°C, C1=63.4°C
Maximum frequency	3.6 GHz	3.2 GHz
Number of cores	1	2
Transistor count	188 million	376 million
VID voltage range	1.200V-1.3375V	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
Scenario Design Power (SDP)	0 W
Sockets supported	PLGA775	PLGA775
Thermal Design Power (TDP)	86 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® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Physical Address Extensions (PAE)	32-bit	32-bit
Thermal Monitoring
Intel® AES New Instructions
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)