Pentium 2129Y vs Celeron B840

Primary details

Comparing Celeron B840 and Pentium 2129Y processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2785	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	Intel Pentium
Power efficiency	1.65	no data
Architecture codename	Sandy Bridge (2011−2013)	Ivy Bridge (2012−2013)
Release date	1 July 2011 (13 years ago)	1 September 2012 (12 years ago)
Launch price (MSRP)	$86	$150

Detailed specifications

Celeron B840 and Pentium 2129Y 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	2
Base clock speed	1.9 GHz	1.1 GHz
Boost clock speed	1.9 GHz	1.1 GHz
Bus type	DMI 2.0	no data
Bus rate	4 × 5 GT/s	5 GT/s
Multiplier	19	no data
L1 cache	128 KB	64K (per core)
L2 cache	512 KB	256K (per core)
L3 cache	2 MB (shared)	2 MB (shared)
Chip lithography	32 nm	22 nm
Die size	131 mm2	118 mm2
Maximum core temperature	100 °C	105 °C
Number of transistors	504 million	1,400 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Celeron B840 and Pentium 2129Y 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
Socket	FCPGA988,PGA988	FCBGA1023
Power consumption (TDP)	35 Watt	10 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron B840 and Pentium 2129Y. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2
FMA	+	-
Enhanced SpeedStep (EIST)	+	+
My WiFi	+	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
Demand Based Switching	-	-
FDI	+	+
Fast Memory Access	+	+

Security technologies

Celeron B840 and Pentium 2129Y technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+
Anti-Theft	-	-

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron B840 and Pentium 2129Y are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron B840 and Pentium 2129Y. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	16 GB	32 GB
Max memory channels	2	2
Maximum memory bandwidth	21.335 GB/s	25.6 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 3rd Generation Intel® Processors
Clear Video HD	-	-
Graphics max frequency	1 GHz	850 MHz
InTru 3D	-	-

Graphics interfaces

Available interfaces and connections of Celeron B840 and Pentium 2129Y integrated GPUs.

Number of displays supported	2	3
eDP	+	+
DisplayPort	+	+
HDMI	+	+
SDVO	+	+
CRT	+	+

Peripherals

Specifications and connection of peripherals supported by Celeron B840 and Pentium 2129Y.

PCIe version	2.0	no data
PCI Express lanes	16	no data

Synthetic benchmark performance

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

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Pros & cons summary

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Recency	1 July 2011	1 September 2012
Chip lithography	32 nm	22 nm
Power consumption (TDP)	35 Watt	10 Watt

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