Core i7-6660U: specs and benchmarks

Summary

Intel started Core i7-6660U sales 20 March 2016 at a recommended price of $415. This is a Skylake architecture notebook processor primarily aimed at office systems. It has 2 cores and 4 threads, and is based on 14 nm manufacturing technology, with a maximum frequency of 3400 MHz and a locked multiplier.

Compatibility-wise, this is FCBGA1356 processor with a TDP of 15 Watt. It supports DDR4-2133, LPDDR3-1866, DDR3L-1600 memory.

Primary details

Core i7-6660U processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in the ranking	1826
Place by popularity	not in top-100
Market segment	Laptop
Series	Intel Core i7
Power efficiency	14.32	of 100.00 (Ryzen Z1 Extreme)
Architecture codename	Skylake (2015−2016)
Release date	20 March 2016 (8 years ago)
Launch price (MSRP)	$415	of 17,906 (Xeon Platinum 8280L)

Detailed specifications

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores	2 (Dual-core)
Threads	4
Base clock speed	2.4 GHz	of 4.7 GHz (FX-9590)
Boost clock speed	3.4 GHz	of 6.2 GHz (Core i9-14900KS)
Bus type	OPI
Bus rate	4 GT/s
Multiplier	24	of 42 (Core i7-7700K)
L1 cache	128 KB	of 80 KB (EPYC 9965)
L2 cache	512 KB	of 2 MB (Xeon 6980P)
L3 cache	4 MB	of 1152 MB (EPYC 9684X)
Chip lithography	14 nm	of 3 nm (Apple M3 Max 16-Core)
Maximum core temperature	100 °C	of 110 °C (Atom x7-E3950)
64 bit support	+
Windows 11 compatibility	-

Compatibility

Information on Core i7-6660U compatibility with other computer components and devices: 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)	of 8 (Opteron 842)
Socket	FCBGA1356
Power consumption (TDP)	15 Watt	of 500 Watt (Xeon 6960P)

Technologies and extensions

Technological capabilities and additional instructions supported by Core i7-6660U. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+
AVX	+
vPro	+
Enhanced SpeedStep (EIST)	+
eDRAM	64 MB
My WiFi	+
Turbo Boost Technology	2.0
Hyper-Threading Technology	+
TSX	+
Idle States	+
Thermal Monitoring	+
Flex Memory Access	+
SIPP	+
Smart Response	+

Security technologies

Processor technologies aimed at improving security, for example, by protecting against hacks.

TXT	+
EDB	+
Secure Key	+
MPX	+
Identity Protection	+
SGX	Yes with Intel® ME
OS Guard	+

Virtualization technologies

Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.

VT-d	+
VT-x	+
EPT	+

Memory specs

Types, maximum amount and channel number of RAM supported by Core i7-6660U's memory controller. Depending on the motherboard, higher memory frequency may be supported.

Supported memory types	DDR4-2133, LPDDR3-1866, DDR3L-1600
Maximum memory size	32 GB	of 6 TiB (EPYC 9124)
Max memory channels	2	of 12 (Xeon Platinum 9221)
Maximum memory bandwidth	34.134 GB/s	of 460.8 GB/s (EPYC 9124)

Graphics specifications

General parameters of a GPU integrated into Core i7-6660U.

Integrated graphics card	Intel Iris Graphics 540
Max video memory	32 GB
Quick Sync Video	+
Clear Video	+
Clear Video HD	+
Graphics max frequency	1.05 GHz
InTru 3D	+

Graphics interfaces

Available interfaces and connections of Core i7-6660U's integrated GPU.

Number of displays supported	3
eDP	+
DisplayPort	+
HDMI	+
DVI	+

Graphics image quality

Maximum display resolutions supported by Core i7-6660U's integrated GPU, including resolutions over different interfaces.

4K resolution support	+
Max resolution over HDMI 1.4	4096x2304@24Hz
Max resolution over eDP	4096x2304@60Hz
Max resolution over DisplayPort	4096x2304@60Hz

Graphics API support

APIs supported by Core i7-6660U's integrated GPU, sometimes API versions are included.

DirectX	12
OpenGL	4.5

Peripherals

Specifications and connection types of supported peripherals.

PCIe version	3.0	of 5.0 (Core i9-12900K)
PCI Express lanes	12	of 128 (EPYC 7551P)

Benchmark performance

Single-core and multi-core benchmark results of Core i7-6660U. Overall benchmark performance 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.

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Closest competitors

Core i7-6660U's performance relative to its closest rivals among notebook CPUs.

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