Atom N455 vs Celeron 877

Place in the ranking	2945	3337
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	Intel Atom
Power efficiency	2.45	1.62
Architecture codename	Sandy Bridge (2011−2013)	Pinetrail (2009−2011)
Release date	1 July 2012 (12 years ago)	1 June 2010 (14 years ago)
Launch price (MSRP)	$86	$64

Detailed specifications

Celeron 877 and Atom N455 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)	1 (Single-Core)
Threads	2	2
Base clock speed	1.4 GHz	1.66 GHz
Boost clock speed	1.4 GHz	1.67 GHz
Bus type	DMI 2.0	no data
Bus rate	4 × 5 GT/s	533 MHz
Multiplier	14	no data
L1 cache	64K (per core)	64 KB (per core)
L2 cache	256K (per core)	512K (per core)
L3 cache	2 MB (shared)	0 KB
Chip lithography	32 nm	45 nm
Die size	131 mm²	66 mm²
Maximum core temperature	100 °C	100 °C
Number of transistors	504 million	123 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Celeron 877 and Atom N455 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	FCBGA1023	FCBGA559
Power consumption (TDP)	17 Watt	6.5 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron 877 and Atom N455. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	Intel® SSE2, Intel® SSE3, Intel® SSSE3
FMA	+	-
Enhanced SpeedStep (EIST)	+	+
My WiFi	-	no data
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	+
Idle States	+	no data
Thermal Monitoring	+	+
Flex Memory Access	+	no data
Demand Based Switching	-	-
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Celeron 877 and Atom N455 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+
Anti-Theft	-	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron 877 and Atom N455 are enumerated here.

VT-d	-	-
VT-x	+	-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron 877 and Atom N455. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	16 GB	2 GB
Max memory channels	2	1
Maximum memory bandwidth	21.335 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics for 2nd Generation Intel Processors	Intel GMA 3150
Graphics max frequency	1 GHz	no data

Graphics interfaces

Available interfaces and connections of Celeron 877 and Atom N455 integrated GPUs.

Number of displays supported	2	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
SDVO	+	no data
CRT	+	no data

Peripherals

Specifications and connection of peripherals supported by Celeron 877 and Atom N455.

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.

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.

Celeron 877 0.44
+267%

Atom N455 0.12

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.

Celeron 877 693
+254%

Atom N455 196

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.

Celeron 877 242
+357%

Atom N455 53

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.

Celeron 877 457
+471%

Atom N455 80

Gaming performance

Pros & cons summary

Performance score	0.44	0.12
Integrated graphics card	0.77	0.01
Recency	1 July 2012	1 June 2010
Physical cores	2	1
Chip lithography	32 nm	45 nm
Power consumption (TDP)	17 Watt	6 Watt

Celeron 877 has a 266.7% higher aggregate performance score, 7600% faster integrated GPU, an age advantage of 2 years, 100% more physical cores, and a 40.6% more advanced lithography process.

Atom N455, on the other hand, has 183.3% lower power consumption.

The Celeron 877 is our recommended choice as it beats the Atom N455 in performance tests.

Should you still have questions on choice between Celeron 877 and Atom N455, ask them in Comments section, and we shall answer.