i7-7820EQ vs i5-661

Primary details

Comparing Core i5-661 and Core i7-7820EQ processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2078	1229
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.09	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Core i7
Architecture codename	Clarkdale (2010−2011)	Kaby Lake (2016−2019)
Release date	7 January 2010 (14 years ago)	3 January 2017 (7 years ago)
Launch price (MSRP)	$252	$378

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-661 and Core i7-7820EQ 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)	4 (Quad-Core)
Threads	4	8
Base clock speed	3.33 GHz	no data
Boost clock speed	3.6 GHz	3.1 GHz
Bus type	no data	DMI 3.0
Bus rate	2.5 GT/s	8 GT/s
Multiplier	no data	31
L1 cache	64 KB (per core)	256 KB
L2 cache	256 KB (per core)	1 MB
L3 cache	4 MB (shared)	8 MB
Chip lithography	32 nm	14 nm
Die size	81 mm2	no data
Maximum core temperature	70 °C	no data
Number of transistors	382 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i5-661 and Core i7-7820EQ 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	no data
Power consumption (TDP)	87 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-661 and Core i7-7820EQ. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	no data
AES-NI	+	+
AVX	-	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	1.0	no data
Hyper-Threading Technology	+	no data
TSX	-	+
Idle States	+	no data
Demand Based Switching	-	no data
PAE	36 Bit	no data
FDI	+	no data
Status	Discontinued	no data

Security technologies

Core i5-661 and Core i7-7820EQ technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-661 and Core i7-7820EQ are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-661 and Core i7-7820EQ. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3L-1600
Maximum memory size	16.38 GB	64 GB
Max memory channels	2	2
Maximum memory bandwidth	21 GB/s	34.134 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 630
Clear Video HD	+	no data

Graphics interfaces

Available interfaces and connections of Core i5-661 and Core i7-7820EQ integrated GPUs.

Number of displays supported

2

no data

Peripherals

Specifications and connection of peripherals supported by Core i5-661 and Core i7-7820EQ.

PCIe version	2.0	3.0
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.

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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

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Performance score	1.60	4.89
Recency	7 January 2010	3 January 2017
Physical cores	2	4
Threads	4	8
Chip lithography	32 nm	14 nm
Power consumption (TDP)	87 Watt	45 Watt

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Should you still have questions on choice between Core i5-661 and Core i7-7820EQ, ask them in Comments section, and we shall answer.

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