Atom Z3740 vs Celeron 3855U

Place in the ranking	2636	3005
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	no data
Power efficiency	4.86	18.45
Architecture codename	Skylake (2015−2016)	Bay Trail-T (2013−2014)
Release date	15 August 2015 (9 years ago)	27 September 2013 (11 years ago)
Launch price (MSRP)	$107	$32

Detailed specifications

Celeron 3855U and Atom Z3740 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)	4 (Quad-Core)
Threads	2	4
Base clock speed	1.6 GHz	1.33 GHz
Boost clock speed	1.6 GHz	1.86 GHz
Bus type	OPI	no data
Bus rate	4 GT/s	no data
Multiplier	16	no data
L1 cache	128 KB	64K (per core)
L2 cache	512 KB	512K (per core)
L3 cache	2 MB	0 KB
Chip lithography	14 nm	22 nm
Die size	98.57 mm²	no data
Maximum core temperature	100 °C	90 °C
Number of transistors	1750 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Celeron 3855U and Atom Z3740 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	FCBGA1356	UTFCBGA1380
Power consumption (TDP)	15 Watt	2 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron 3855U and Atom Z3740. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	no data
AES-NI	+	+
Enhanced SpeedStep (EIST)	+	+
My WiFi	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Smart Response	+	no data

Security technologies

Celeron 3855U and Atom Z3740 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data
Secure Key	+	+
Identity Protection	+	+
SGX	Yes with Intel® ME	no data
OS Guard	-	no data
Anti-Theft	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron 3855U and Atom Z3740 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron 3855U and Atom Z3740. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1866/2133, LPDDR3-1600/1866, DDR3L-1333/1600	DDR3
Maximum memory size	32 GB	4 GB
Max memory channels	2	2
Maximum memory bandwidth	34.134 GB/s	17.1 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics 510	Intel HD Graphics for Intel Atom Processor Z3700 Series
Max video memory	32 GB	no data
Quick Sync Video	+	+
Clear Video HD	+	+
Graphics max frequency	900 MHz	667 MHz

Graphics interfaces

Available interfaces and connections of Celeron 3855U and Atom Z3740 integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Celeron 3855U and Atom Z3740 integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@24Hz	no data
Max resolution over eDP	4096x2304@60Hz	no data
Max resolution over DisplayPort	4096x2304@60Hz	no data
Max resolution over VGA	N/A	no data

Graphics API support

APIs supported by Celeron 3855U and Atom Z3740 integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.4	no data

Peripherals

Specifications and connection of peripherals supported by Celeron 3855U and Atom Z3740.

PCIe version	2.0	no data
PCI Express lanes	10	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 3855U 0.77
+97.4%

Atom Z3740 0.39

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 3855U 1219
+96.3%

Atom Z3740 621

Gaming performance

Pros & cons summary

Performance score	0.77	0.39
Integrated graphics card	1.61	0.77
Recency	15 August 2015	27 September 2013
Physical cores	2	4
Threads	2	4
Chip lithography	14 nm	22 nm
Power consumption (TDP)	15 Watt	2 Watt

Celeron 3855U has a 97.4% higher aggregate performance score, 109.1% faster integrated GPU, an age advantage of 1 year, and a 57.1% more advanced lithography process.

Atom Z3740, on the other hand, has 100% more physical cores and 100% more threads, and 650% lower power consumption.

The Celeron 3855U is our recommended choice as it beats the Atom Z3740 in performance tests.

Should you still have questions on choice between Celeron 3855U and Atom Z3740, ask them in Comments section, and we shall answer.