Xeon W-11855M vs Atom Z3740

Place in the ranking	3005	682
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Server
Series	no data	Intel Tiger Lake
Power efficiency	18.45	30.85
Architecture codename	Bay Trail-T (2013−2014)	Tiger Lake-H (2021)
Release date	27 September 2013 (11 years ago)	11 May 2021 (3 years ago)
Launch price (MSRP)	$32	no data

Detailed specifications

Atom Z3740 and Xeon W-11855M 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	4 (Quad-Core)	6 (Hexa-Core)
Threads	4	12
Base clock speed	1.33 GHz	3.2 GHz
Boost clock speed	1.86 GHz	4.9 GHz
Bus rate	no data	8 GT/s
L1 cache	64K (per core)	96K (per core)
L2 cache	512K (per core)	1.25 MB (per core)
L3 cache	0 KB	18 MB (shared)
Chip lithography	22 nm	10 nm SuperFin
Maximum core temperature	90 °C	100 °C
Maximum case temperature (TCase)	no data	72 °C
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Atom Z3740 and Xeon W-11855M 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
Socket	UTFCBGA1380	FCBGA1787
Power consumption (TDP)	2 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom Z3740 and Xeon W-11855M. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
FMA	-	+
AVX	-	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Hyper-Threading Technology	no data	+
TSX	-	+
Thermal Monitoring	-	+
Flex Memory Access	no data	+
SIPP	-	+
Turbo Boost Max 3.0	no data	+
Deep Learning Boost	-	+

Security technologies

Atom Z3740 and Xeon W-11855M technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
Secure Key	+	+
Identity Protection	+	-
SGX	no data	-
OS Guard	no data	+
Anti-Theft	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Atom Z3740 and Xeon W-11855M are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom Z3740 and Xeon W-11855M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4
Maximum memory size	4 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	17.1 GB/s	51.2 GB/s
ECC memory support	-	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics for Intel Atom Processor Z3700 Series	Intel UHD Graphics for 11th Gen Intel Processors
Quick Sync Video	+	+
Clear Video HD	+	no data
Graphics max frequency	667 MHz	1.45 GHz
Execution Units	no data	32

Graphics interfaces

Available interfaces and connections of Atom Z3740 and Xeon W-11855M integrated GPUs.

Number of displays supported

no data

Graphics image quality

Maximum display resolutions supported by Atom Z3740 and Xeon W-11855M integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	no data	4096x2304@60Hz
Max resolution over eDP	no data	4096x2304@60Hz
Max resolution over DisplayPort	no data	7680x4320@60Hz

Graphics API support

APIs supported by Atom Z3740 and Xeon W-11855M integrated GPUs, sometimes API versions are included.

DirectX	no data	12.1
OpenGL	no data	4.6

Peripherals

Specifications and connection of peripherals supported by Atom Z3740 and Xeon W-11855M.

PCIe version	no data	4.0
PCI Express lanes	no data	20

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.

Atom Z3740 0.39

Xeon W-11855M 11.41
+2826%

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.

Atom Z3740 621

Xeon W-11855M 18129
+2819%

Gaming performance

Pros & cons summary

Performance score	0.39	11.41
Integrated graphics card	0.77	5.58
Recency	27 September 2013	11 May 2021
Physical cores	4	6
Threads	4	12
Chip lithography	22 nm	10 nm
Power consumption (TDP)	2 Watt	35 Watt

Atom Z3740 has 1650% lower power consumption.

Xeon W-11855M, on the other hand, has a 2825.6% higher aggregate performance score, 624.7% faster integrated GPU, an age advantage of 7 years, 50% more physical cores and 200% more threads, and a 120% more advanced lithography process.

The Xeon W-11855M is our recommended choice as it beats the Atom Z3740 in performance tests.

Be aware that Atom Z3740 is a notebook processor while Xeon W-11855M is a server/workstation one.

Should you still have questions on choice between Atom Z3740 and Xeon W-11855M, ask them in Comments section, and we shall answer.