Pentium 4 HT 661 vs Core i5-2520M

Primary details

Comparing Core i5-2520M and Pentium 4 HT 661 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2147	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Core i5	no data
Architecture codename	Sandy Bridge (2011−2013)	Cedar Mill (2006)
Release date	20 February 2011 (13 years ago)	5 January 2006 (18 years ago)
Launch price (MSRP)	$225	no data

Detailed specifications

Core i5-2520M and Pentium 4 HT 661 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	2 (Dual-core)	1 (Single-Core)
Threads	4	2
Base clock speed	2.5 GHz	3.6 GHz
Boost clock speed	2.5 GHz	3.6 GHz
Bus type	DMI 2.0	no data
Bus rate	4 × 5 GT/s	no data
Multiplier	25	no data
L1 cache	128 KB	28 KB
L2 cache	512 KB	2 MB
L3 cache	3 MB	0 KB
Chip lithography	32 nm	65 nm
Die size	149 mm2	81 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	no data	69 °C
Number of transistors	624 Million	188 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i5-2520M and Pentium 4 HT 661 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1 (Uniprocessor)	1
Socket	rPGA988B / BGA1023	775
Power consumption (TDP)	35 Watt	86 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-2520M and Pentium 4 HT 661. You'll probably need this information if you require some particular technology.

AES-NI	+	-
FMA	+	-
AVX	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Hyper-Threading Technology	+	no data

Security technologies

Core i5-2520M and Pentium 4 HT 661 technologies aimed at improving security, for example, by protecting against hacks.

TXT

+

no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-2520M and Pentium 4 HT 661 are enumerated here.

AMD-V	+	-
VT-d	+	no data
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-2520M and Pentium 4 HT 661. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR1, DDR2, DDR3
Maximum memory size	16 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	21.335 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

Intel HD Graphics 3000

no data

Peripherals

Specifications and connection of peripherals supported by Core i5-2520M and Pentium 4 HT 661.

PCI Express lanes

16

no data

Pros & cons summary

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Recency	20 February 2011	5 January 2006
Physical cores	2	1
Threads	4	2
Chip lithography	32 nm	65 nm
Power consumption (TDP)	35 Watt	86 Watt

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