i7-660LM vs i7-870

Primary details

Comparing Core i7-870 and Core i7-660LM processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1930	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.23	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Core i7
Power efficiency	1.96	no data
Architecture codename	Lynnfield (2009−2010)	Arrandale (2010−2011)
Release date	8 September 2009 (15 years ago)	13 September 2010 (14 years ago)
Launch price (MSRP)	$305	$346

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-870 and Core i7-660LM 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	4 (Quad-Core)	2 (Dual-core)
Threads	8	4
Base clock speed	2.93 GHz	2.26 GHz
Boost clock speed	3.6 GHz	3.06 GHz
Bus type	no data	DMI 1.0
Bus rate	2.5 GT/s	1 × 2.5 GT/s
Multiplier	no data	17
L1 cache	64 KB (per core)	128 KB
L2 cache	256 KB (per core)	512 KB
L3 cache	8 MB (shared)	4 MB
Chip lithography	45 nm	32 nm
Die size	296 mm2	81+177 mm2
Maximum core temperature	73 °C	105 °C
Number of transistors	774 million	382+177 Million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i7-870 and Core i7-660LM 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,LGA1156	BGA1288
Power consumption (TDP)	95 Watt	25 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-870 and Core i7-660LM. 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	-	+
vPro	no data	+
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	no data	+
Fast Memory Access	no data	+

Security technologies

Core i7-870 and Core i7-660LM technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-870 and Core i7-660LM are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-870 and Core i7-660LM. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3-800, DDR3-1066
Maximum memory size	16 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	N/A	Intel HD Graphics for Previous Generation Intel Processors
Clear Video	no data	+
Clear Video HD	no data	+
Graphics max frequency	no data	566 MHz

Graphics interfaces

Available interfaces and connections of Core i7-870 and Core i7-660LM integrated GPUs.

Number of displays supported

no data

2

Peripherals

Specifications and connection of peripherals supported by Core i7-870 and Core i7-660LM.

PCIe version	2.0	2.0
PCI Express lanes	16	16

Pros & cons summary

---

Recency	8 September 2009	13 September 2010
Physical cores	4	2
Threads	8	4
Chip lithography	45 nm	32 nm
Power consumption (TDP)	95 Watt	25 Watt

---

Should you still have questions on choice between Core i7-870 and Core i7-660LM, 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.

---