i3-390M vs i5-661

Primary details

Comparing Core i5-661 and Core i3-390M processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2110	2594
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.08	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Core i3
Power efficiency	1.69	2.18
Architecture codename	Clarkdale (2010−2011)	Arrandale (2010−2011)
Release date	7 January 2010 (14 years ago)	11 January 2011 (13 years ago)
Launch price (MSRP)	$252	$39

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-661 and Core i3-390M 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)	2 (Dual-core)
Threads	4	4
Base clock speed	3.33 GHz	2.66 GHz
Boost clock speed	3.6 GHz	0.07 GHz
Bus type	no data	DMI 1.0
Bus rate	2.5 GT/s	1 × 2.5 GT/s
Multiplier	no data	20
L1 cache	64 KB (per core)	128 KB
L2 cache	256 KB (per core)	512 KB
L3 cache	4 MB (shared)	3 MB (shared)
Chip lithography	32 nm	32 nm
Die size	81 mm2	81+114 mm2
Maximum core temperature	70 °C	90 °C for rPGA, 105 °C for BGA
Number of transistors	382 million	382+177 Million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i5-661 and Core i3-390M 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	1 (Uniprocessor)
Socket	FCLGA1156	BGA1288,PGA988
Power consumption (TDP)	87 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-661 and Core i3-390M. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	Intel® SSE4.1, Intel® SSE4.2
AES-NI	+	-
FMA	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	1.0	-
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	-	+
Flex Memory Access	no data	+
Demand Based Switching	-	no data
PAE	36 Bit	36 Bit
FDI	+	+
Fast Memory Access	no data	+

Security technologies

Core i5-661 and Core i3-390M technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-661 and Core i3-390M are enumerated here.

VT-d	+	-
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-661 and Core i3-390M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	16.38 GB	8 GB
Max memory channels	2	2
Maximum memory bandwidth	21 GB/s	17.051 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for Previous Generation Intel® Processors	Intel® HD Graphics for Previous Generation Intel® Processors
Clear Video	no data	+
Clear Video HD	+	+
Graphics max frequency	no data	667 MHz

Graphics interfaces

Available interfaces and connections of Core i5-661 and Core i3-390M integrated GPUs.

Number of displays supported

2

2

Peripherals

Specifications and connection of peripherals supported by Core i5-661 and Core i3-390M.

PCIe version	2.0	2.0
PCI Express lanes	16	16

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

---

Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

---

Pros & cons summary

---

Performance score	1.58	0.82
Recency	7 January 2010	11 January 2011
Power consumption (TDP)	87 Watt	35 Watt

---

Should you still have questions on choice between Core i5-661 and Core i3-390M, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---