Celeron 3855U vs Athlon 300U

Primary details

Comparing Athlon 300U and Celeron 3855U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1754	2632
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	AMD Athlon	Intel Celeron
Power efficiency	15.38	4.82
Architecture codename	Raven Ridge 2 (2019)	Skylake (2015−2016)
Release date	6 January 2019 (5 years ago)	15 August 2015 (9 years ago)
Launch price (MSRP)	no data	$107

Detailed specifications

Athlon 300U and Celeron 3855U 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	4	2
Base clock speed	2.4 GHz	1.6 GHz
Boost clock speed	3.3 GHz	1.6 GHz
Bus type	PCIe 3.0	OPI
Bus rate	no data	4 GT/s
Multiplier	24	16
L1 cache	192 KB	128 KB
L2 cache	1 MB	512 KB
L3 cache	4 MB (shared)	2 MB
Chip lithography	14 nm	14 nm
Die size	209.78 mm2	98.57 mm2
Maximum core temperature	no data	100 °C
Number of transistors	4940 Million	1750 Million
64 bit support	+	+
Windows 11 compatibility	+	-

Compatibility

Information on Athlon 300U and Celeron 3855U 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	FP5	FCBGA1356
Power consumption (TDP)	15 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon 300U and Celeron 3855U. You'll probably need this information if you require some particular technology.

Instruction set extensions	XFR, FMA3, SSE 4.2, AVX2, SMT	Intel® SSE4.1, Intel® SSE4.2
AES-NI	+	+
AVX	+	-
Enhanced SpeedStep (EIST)	no data	+
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

Athlon 300U and Celeron 3855U technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon 300U and Celeron 3855U are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon 300U and Celeron 3855U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Dual-channel	DDR4-1866/2133, LPDDR3-1600/1866, DDR3L-1333/1600
Maximum memory size	64 GB	32 GB
Max memory channels	2	2
Maximum memory bandwidth	38.397 GB/s	34.134 GB/s
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	AMD Radeon RX Vega 3	Intel HD Graphics 510
Max video memory	no data	32 GB
Quick Sync Video	-	+
Clear Video HD	no data	+
Graphics max frequency	no data	900 MHz

Graphics interfaces

Available interfaces and connections of Athlon 300U and Celeron 3855U integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Athlon 300U and Celeron 3855U integrated GPUs, including resolutions over different interfaces.

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

Graphics API support

APIs supported by Athlon 300U and Celeron 3855U integrated GPUs, sometimes API versions are included.

DirectX	no data	12
OpenGL	no data	4.4

Peripherals

Specifications and connection of peripherals supported by Athlon 300U and Celeron 3855U.

PCIe version	3.0	2.0
PCI Express lanes	12	10

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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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.

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Pros & cons summary

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Performance score	2.52	0.79
Integrated graphics card	2.98	1.61
Recency	6 January 2019	15 August 2015
Threads	4	2

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Should you still have questions on choice between Athlon 300U and Celeron 3855U, ask them in Comments section, and we shall answer.

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