A8-4557M vs i7-840QM

Primary details

Comparing Core i7-840QM and A8-4557M processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2325	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i7	AMD A-Series
Power efficiency	2.59	no data
Architecture codename	Clarksfield (2009−2010)	Trinity (2012−2013)
Release date	22 June 2010 (14 years ago)	15 May 2012 (12 years ago)
Launch price (MSRP)	$568	no data

Detailed specifications

Core i7-840QM and A8-4557M 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)	4 (Quad-Core)
Threads	8	4
Base clock speed	1.86 GHz	1.9 GHz
Boost clock speed	3.2 GHz	2.8 GHz
Bus type	DMI 1.0	no data
Bus rate	2.5 GT/s	no data
Multiplier	14	no data
L1 cache	256 KB	no data
L2 cache	1 MB	4 MB
L3 cache	8 MB (shared)	no data
Chip lithography	45 nm	32 nm
Die size	296 mm2	246 mm2
Maximum core temperature	100 °C	no data
Number of transistors	774 million	1303 Million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i7-840QM and A8-4557M 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)	no data
Socket	FCPGA988,PGA988	BGA
Power consumption (TDP)	45 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-840QM and A8-4557M. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	86x SSE (1, 2, 3, 3S, 4.1, 4.2, 4A),-64, AES, AVX, FMA
AES-NI	-	+
FMA	-	+
AVX	-	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	+	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
PAE	36 Bit	no data

Security technologies

Core i7-840QM and A8-4557M technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-840QM and A8-4557M are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-840QM and A8-4557M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	no data
Maximum memory size	8 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	21.335 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

None

AMD Radeon HD 7640G (497 - 655 MHz)

Peripherals

Specifications and connection of peripherals supported by Core i7-840QM and A8-4557M.

PCIe version	2	no data
PCI Express lanes	16	no data

Pros & cons summary

---

Recency	22 June 2010	15 May 2012
Threads	8	4
Chip lithography	45 nm	32 nm
Power consumption (TDP)	45 Watt	35 Watt

---

Should you still have questions on choice between Core i7-840QM and A8-4557M, 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.

---