Pentium B915C vs i7-3840QM

Primary details

Comparing Core i7-3840QM and Pentium B915C processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1474	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i7	no data
Power efficiency	7.82	no data
Architecture codename	Ivy Bridge (2012−2013)	Sandy Bridge (2011−2013)
Release date	3 September 2012 (12 years ago)	1 May 2012 (12 years ago)
Launch price (MSRP)	$568	no data

Detailed specifications

Core i7-3840QM and Pentium B915C 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	2
Base clock speed	2.8 GHz	no data
Boost clock speed	3.8 GHz	1.5 GHz
Bus rate	5 GT/s	no data
L1 cache	64K (per core)	64 KB (per core)
L2 cache	256K (per core)	256 KB (per core)
L3 cache	8 MB (shared)	2048 KB (shared)
Chip lithography	22 nm	32 nm
Die size	160 mm2	131 mm2
Maximum core temperature	105 °C	no data
Number of transistors	1,400 million	504 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i7-3840QM and Pentium B915C 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	FCBGA1224,FCPGA988	G2 (988B)
Power consumption (TDP)	45 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-3840QM and Pentium B915C. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	no data
AES-NI	+	-
AVX	+	-
Enhanced SpeedStep (EIST)	+	+
My WiFi	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Demand Based Switching	-	no data
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Core i7-3840QM and Pentium B915C technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data
Secure Key	+	no data
Identity Protection	+	-
Anti-Theft	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-3840QM and Pentium B915C are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-3840QM and Pentium B915C. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	32 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	25.6 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics 4000	Intel HD (Sandy Bridge)
Quick Sync Video	+	-
Clear Video HD	+	no data
Graphics max frequency	1.3 GHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i7-3840QM and Pentium B915C integrated GPUs.

Number of displays supported	3	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
SDVO	+	no data
CRT	+	no data

Peripherals

Specifications and connection of peripherals supported by Core i7-3840QM and Pentium B915C.

PCIe version	3.0	no data
PCI Express lanes	16	no data

Pros & cons summary

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Recency	3 September 2012	1 May 2012
Physical cores	4	2
Threads	8	2
Chip lithography	22 nm	32 nm
Power consumption (TDP)	45 Watt	35 Watt

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Should you still have questions on choice between Core i7-3840QM and Pentium B915C, ask them in Comments section, and we shall answer.

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