i3-1305U vs i7-6660U

Place in the ranking	1825	1158
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i7	Intel Raptor Lake-U
Power efficiency	14.33	34.97
Architecture codename	Skylake (2015−2016)	Raptor Lake-U (2023)
Release date	20 March 2016 (8 years ago)	4 January 2023 (1 year ago)
Launch price (MSRP)	$415	$309

Detailed specifications

Core i7-6660U and Core i3-1305U 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)	5 (Penta-Core)
Threads	4	6
Base clock speed	2.4 GHz	1.6 GHz
Boost clock speed	3.4 GHz	4.5 GHz
Bus type	OPI	no data
Bus rate	4 GT/s	no data
Multiplier	24	no data
L1 cache	128 KB	80K (per core)
L2 cache	512 KB	1.25 MB (per core)
L3 cache	4 MB	10 MB (shared)
Chip lithography	14 nm	Intel 7 nm
Maximum core temperature	100 °C	100 °C
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Core i7-6660U and Core i3-1305U 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	FCBGA1356	FCBGA1744
Power consumption (TDP)	15 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-6660U and Core i3-1305U. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
eDRAM	64 MB	no data
Speed Shift	no data	+
My WiFi	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	no data
Thermal Monitoring	+	+
Flex Memory Access	+	+
SIPP	+	-
Smart Response	+	no data
Deep Learning Boost	-	+

Security technologies

Core i7-6660U and Core i3-1305U technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	+
MPX	+	-
Identity Protection	+	-
SGX	Yes with Intel® ME	no data
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-6660U and Core i3-1305U are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-6660U and Core i3-1305U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2133, LPDDR3-1866, DDR3L-1600	DDR5-5200, DDR4-3200, LPDDR4x-4267
Maximum memory size	32 GB	96 GB
Max memory channels	2	2
Maximum memory bandwidth	34.134 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel Iris Graphics 540	Intel UHD Graphics for 13th Gen Intel Processors
Max video memory	32 GB	no data
Quick Sync Video	+	+
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	1.05 GHz	1.25 GHz
Execution Units	no data	64
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i7-6660U and Core i3-1305U integrated GPUs.

Number of displays supported	3	4
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
DVI	+	no data

Graphics image quality

Maximum display resolutions supported by Core i7-6660U and Core i3-1305U integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@24Hz	4096 x 2304 @ 60Hz
Max resolution over eDP	4096x2304@60Hz	4096 x 2304 @ 120Hz
Max resolution over DisplayPort	4096x2304@60Hz	7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Core i7-6660U and Core i3-1305U integrated GPUs, sometimes API versions are included.

DirectX	12	12.1
OpenGL	4.5	4.6

Peripherals

Specifications and connection of peripherals supported by Core i7-6660U and Core i3-1305U.

PCIe version	3.0	4.0
PCI Express lanes	12	8

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.

i7-6660U 2.27

i3-1305U 5.54
+144%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

i7-6660U 3603

i3-1305U 8802
+144%

Gaming performance

Pros & cons summary

Performance score	2.27	5.54
Integrated graphics card	3.26	5.58
Recency	20 March 2016	4 January 2023
Physical cores	2	5
Threads	4	6

i3-1305U has a 144.1% higher aggregate performance score, 71.2% faster integrated GPU, an age advantage of 6 years, and 150% more physical cores and 50% more threads.

The Core i3-1305U is our recommended choice as it beats the Core i7-6660U in performance tests.

Should you still have questions on choice between Core i7-6660U and Core i3-1305U, ask them in Comments section, and we shall answer.