Atom Z650 vs i7-840QM

Primary details

Comparing Core i7-840QM and Atom Z650 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2310	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i7	Intel Atom
Power efficiency	2.59	no data
Architecture codename	Clarksfield (2009−2010)	Lincroft (2010−2011)
Release date	20 June 2010 (14 years ago)	11 April 2011 (13 years ago)
Launch price (MSRP)	$568	no data

Detailed specifications

Core i7-840QM and Atom Z650 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)	1 (Single-Core)
Threads	8	2
Base clock speed	1.86 GHz	1.2 GHz
Boost clock speed	3.2 GHz	1.2 GHz
Bus type	DMI 1.0	cDMI
Bus rate	2.5 GT/s	400 MT/s
Multiplier	14	8
L1 cache	64 KB (per core)	64K (per core)
L2 cache	256 KB (per core)	512 KB (per core)
L3 cache	8 MB (shared)	0 KB
Chip lithography	45 nm	45 nm
Die size	296 mm2	65 mm2
Maximum core temperature	100 °C	90 °C
Number of transistors	774 million	140 million
64 bit support	+	-
Windows 11 compatibility	-	-

Compatibility

Information on Core i7-840QM and Atom Z650 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 (Uniprocessor)
Socket	FCPGA988,PGA988	T-PBGA518
Power consumption (TDP)	45 Watt	3 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-840QM and Atom Z650. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	Intel® SSE, Intel® SSE2, Intel® SSE3
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	+	no data
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	+	+
PAE	36 Bit	no data

Security technologies

Core i7-840QM and Atom Z650 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-840QM and Atom Z650 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-840QM and Atom Z650. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR2
Maximum memory size	8 GB	2.93 GB
Max memory channels	2	1
Maximum memory bandwidth	21.335 GB/s	3.2 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

None

PowerVR SGX535

Graphics interfaces

Available interfaces and connections of Core i7-840QM and Atom Z650 integrated GPUs.

LVDS

no data

+

Peripherals

Specifications and connection of peripherals supported by Core i7-840QM and Atom Z650.

PCIe version	2	no data
PCI Express lanes	16	no data
PCI support	no data	-

Pros & cons summary

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Recency	20 June 2010	11 April 2011
Physical cores	4	1
Threads	8	2
Power consumption (TDP)	45 Watt	3 Watt

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Should you still have questions on choice between Core i7-840QM and Atom Z650, ask them in Comments section, and we shall answer.

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