Celeron B815 vs Pentium B940

Place in the ranking	2835	2923
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Pentium	Intel Celeron
Power efficiency	1.46	1.24
Architecture codename	Sandy Bridge (2011−2013)	Sandy Bridge (2011−2013)
Release date	19 June 2011 (13 years ago)	1 January 2012 (12 years ago)
Launch price (MSRP)	$134	$86

Detailed specifications

Pentium B940 and Celeron B815 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	2 GHz	1.6 GHz
Boost clock speed	2 GHz	1.6 GHz
Bus type	DMI 2.0	DMI 2.0
Bus rate	4 × 5 GT/s	4 × 5 GT/s
Multiplier	20	16
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	256K (per core)
L3 cache	2 MB (shared)	2 MB (shared)
Chip lithography	32 nm	32 nm
Die size	131 mm²	131 mm²
Maximum core temperature	85 °C	100 °C
Number of transistors	504 million	504 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Pentium B940 and Celeron B815 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	PGA988	FCPGA988,PGA988
Power consumption (TDP)	35 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium B940 and Celeron B815. 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
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

Pentium B940 and Celeron B815 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+
Anti-Theft	-	-

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium B940 and Celeron B815 are enumerated here.

VT-d	-	-
VT-x	-	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium B940 and Celeron B815. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	16 GB	16 GB
Max memory channels	2	2
Maximum memory bandwidth	21.335 GB/s	21.335 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 2nd Generation Intel Processors
Clear Video HD	-	-
Graphics max frequency	1.1 GHz	1.05 GHz
InTru 3D	-	-

Graphics interfaces

Available interfaces and connections of Pentium B940 and Celeron B815 integrated GPUs.

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

Peripherals

Specifications and connection of peripherals supported by Pentium B940 and Celeron B815.

PCIe version	2.0	2.0
PCI Express lanes	16	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.

Pentium B940 0.54
+17.4%

Celeron B815 0.46

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Pentium B940 861
+17.8%

Celeron B815 731

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Pentium B940 317
+30.5%

Celeron B815 243

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Pentium B940 545
+32%

Celeron B815 413

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

Pentium B940 2610
+24.7%

Celeron B815 2093

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

Pentium B940 5067
+25.8%

Celeron B815 4029

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

Pentium B940 2034
+23.6%

Celeron B815 1645