Core i7-620M vs Core 2 Extreme QX9775

Primary details

Comparing Core 2 Extreme QX9775 and Core i7-620M processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	2299
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Laptop
Series	no data	Intel Core i7
Power efficiency	no data	3.35
Architecture codename	Yorkfield (2007−2009)	Arrandale (2010−2011)
Release date	March 2008 (16 years ago)	7 January 2010 (14 years ago)
Launch price (MSRP)	no data	$332

Detailed specifications

Core 2 Extreme QX9775 and Core i7-620M 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	4	4
Base clock speed	3.2 GHz	2.66 GHz
Boost clock speed	3.2 GHz	3.33 GHz
Bus type	no data	DMI 1.0
Bus rate	1600 MHz	1 × 2.5 GT/s
Multiplier	no data	15
L1 cache	64K (per core)	64K (per core)
L2 cache	12 MB (shared)	256K (per core)
L3 cache	0 KB	4 MB (shared)
Chip lithography	45 nm	32 nm
Die size	2x 107 mm2	81+114 mm2
Maximum core temperature	no data	105 °C
Maximum case temperature (TCase)	63 °C	no data
Number of transistors	820 million	384 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-
VID voltage range	0.85V-1.35V	no data

Compatibility

Information on Core 2 Extreme QX9775 and Core i7-620M 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	LGA771	BGA1288,PGA988
Power consumption (TDP)	150 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Extreme QX9775 and Core i7-620M. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2
AES-NI	-	+
FMA	-	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	+
Hyper-Threading Technology	-	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	no data	+
Demand Based Switching	-	no data
PAE	no data	36 Bit
FDI	no data	+
Fast Memory Access	no data	+
FSB parity	-	no data

Security technologies

Core 2 Extreme QX9775 and Core i7-620M technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Extreme QX9775 and Core i7-620M are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Extreme QX9775 and Core i7-620M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR2	DDR3
Maximum memory size	no data	8 GB
Max memory channels	no data	2
Maximum memory bandwidth	no data	17.051 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel® HD Graphics for Previous Generation Intel® Processors
Clear Video	no data	+
Clear Video HD	no data	+
Graphics max frequency	no data	766 MHz

Graphics interfaces

Available interfaces and connections of Core 2 Extreme QX9775 and Core i7-620M integrated GPUs.

Number of displays supported

no data

2

Peripherals

Specifications and connection of peripherals supported by Core 2 Extreme QX9775 and Core i7-620M.

PCIe version	no data	2.0
PCI Express lanes	no data	16

Pros & cons summary

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Physical cores	4	2
Chip lithography	45 nm	32 nm
Power consumption (TDP)	150 Watt	35 Watt

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Should you still have questions on choice between Core 2 Extreme QX9775 and Core i7-620M, ask them in Comments section, and we shall answer.

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