Core i7-660UE vs Core i5-680

Primary details

Comparing Core i5-680 and Core i7-660UE processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1968	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.36	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Core i7
Architecture codename	Clarkdale (2010−2011)	Westmere (2010−2011)
Release date	19 April 2010 (14 years ago)	15 August 2010 (13 years ago)
Launch price (MSRP)	$272	$301
Current price	$38 (0.1x MSRP)	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-680 and Core i7-660UE 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	3.6 GHz	1.33 GHz
Boost clock speed	3.86 GHz	2.4 GHz
Bus support	no data	1 × 2.5 GT/s
L1 cache	64 KB (per core)	128 KB
L2 cache	256 KB (per core)	512 KB
L3 cache	4 MB (shared)	4 MB
Chip lithography	32 nm	32 nm
Die size	81 mm2	81 mm2
Maximum core temperature	73 °C	105 °C
Number of transistors	382 million	382 Million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Core i5-680 and Core i7-660UE 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
Socket	FCLGA1156	BGA1288
Power consumption (TDP)	73 Watt	18 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-680 and Core i7-660UE. 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	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	1.0	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	+
Status	Discontinued	Discontinued

Security technologies

Core i5-680 and Core i7-660UE technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-680 and Core i7-660UE are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-680 and Core i7-660UE. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3-800
Maximum memory size	16.6 GB	8.79 GB
Max memory channels	2	2
Maximum memory bandwidth	21 GB/s	12.8 GB/s
ECC memory support	no data	+

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	500 MHz

Graphics interfaces

Available interfaces and connections of Core i5-680 and Core i7-660UE integrated GPUs.

Number of displays supported

2

2

Peripherals

Specifications and connection of peripherals supported by Core i5-680 and Core i7-660UE.

PCIe version	2.0	2.0
PCI Express lanes	16	16

Pros & cons summary

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Recency	19 April 2010	15 August 2010
Cost	$272	$301
Power consumption (TDP)	73 Watt	18 Watt

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Should you still have questions on choice between Core i5-680 and Core i7-660UE, ask them in Comments section, and we shall answer.

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