i5-520M vs Pentium G840

Primary details

Comparing Pentium G840 and Core i5-520M processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2605	2420
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	4.61	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Core i5
Power efficiency	1.18	2.92
Architecture codename	Sandy Bridge (2011−2013)	Arrandale (2010−2011)
Release date	22 May 2011 (13 years ago)	7 January 2010 (14 years ago)
Launch price (MSRP)	$60	$225

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Pentium G840 and Core i5-520M 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	2 (Dual-core)	2 (Dual-core)
Threads	2	4
Base clock speed	2.8 GHz	2.4 GHz
Boost clock speed	2.8 GHz	2.93 GHz
Bus type	no data	DMI 1.0
Bus rate	no data	1 × 2.5 GT/s
Multiplier	no data	18
L1 cache	64 KB (per core)	128 KB
L2 cache	256 KB (per core)	512 KB
L3 cache	3 MB (shared)	3 MB
Chip lithography	32 nm	32 nm
Die size	131 mm2	81+114 mm2
Maximum core temperature	69 °C	105 °C
Number of transistors	504 million	382+177 Million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Pentium G840 and Core i5-520M 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	FCLGA1155	BGA1288,PGA988
Power consumption (TDP)	65 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium G840 and Core i5-520M. You'll probably need this information if you require some particular technology.

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

Security technologies

Pentium G840 and Core i5-520M technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium G840 and Core i5-520M are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium G840 and Core i5-520M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3-800, DDR3-1066
Maximum memory size	32 GB	8.3 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	Intel HD Graphics for 2nd Generation Intel Processors	Intel HD Graphics for Previous Generation Intel Processors
Clear Video	no data	+
Clear Video HD	-	+
Graphics max frequency	1.1 GHz	766 MHz

Graphics interfaces

Available interfaces and connections of Pentium G840 and Core i5-520M integrated GPUs.

Number of displays supported

2

2

Peripherals

Specifications and connection of peripherals supported by Pentium G840 and Core i5-520M.

PCIe version	2.0	2.0
PCI Express lanes	no data	16

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

---

Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

---

Pros & cons summary

---

Performance score	0.81	1.08
Recency	22 May 2011	7 January 2010
Threads	2	4
Power consumption (TDP)	65 Watt	35 Watt

---

Should you still have questions on choice between Pentium G840 and Core i5-520M, 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.

---