U300 vs Atom C3558

Place in the ranking	2139	1193
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.47	no data
Market segment	Server	Laptop
Series	Intel Atom	no data
Power efficiency	9.04	9.01
Architecture codename	Goldmont (2016−2017)	no data
Release date	15 August 2017 (7 years ago)	1 January 2023 (1 year ago)
Launch price (MSRP)	$86	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Atom C3558 and U300 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)	5 (Penta-Core)
Threads	4	6
Base clock speed	2.2 GHz	no data
Boost clock speed	2.2 GHz	4.4 GHz
Multiplier	22	no data
L1 cache	224 KB	no data
L2 cache	8 MB	no data
L3 cache	8 MB	8 MB Intel® Smart Cache
Chip lithography	14 nm	Intel 7 nm
Maximum core temperature	83 °C	100 °C
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Atom C3558 and U300 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	FCBGA1310	FCBGA1744
Power consumption (TDP)	16 Watt	55 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom C3558 and U300. 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
AES-NI	+	+
Enhanced SpeedStep (EIST)	+	no data
QuickAssist	+	no data
Speed Shift	no data	+
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	+
Thermal Monitoring	-	+
Flex Memory Access	no data	+
Deep Learning Boost	-	+

Security technologies

Atom C3558 and U300 technologies aimed at improving security, for example, by protecting against hacks.

EDB	+	+
Secure Boot	+	no data
Secure Key	+	+
SGX	-	no data
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Atom C3558 and U300 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom C3558 and U300. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4: 2133	DDR5-5200, DDR4-3200, LPDDR4x-4267
Maximum memory size	256 GB	96 GB
Max memory channels	2	2
Maximum memory bandwidth	29.871 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel UHD Graphics for 13th Gen Intel Processors
Quick Sync Video	-	+
Graphics max frequency	no data	1.1 GHz
Execution Units	no data	48

Graphics interfaces

Available interfaces and connections of Atom C3558 and U300 integrated GPUs.

Number of displays supported

no data

Graphics image quality

Maximum display resolutions supported by Atom C3558 and U300 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	no data	4096 x 2304 @ 60Hz
Max resolution over eDP	no data	4096 x 2304 @ 120Hz
Max resolution over DisplayPort	no data	7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Atom C3558 and U300 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 C3558 and U300.

PCIe version	3	no data
PCI Express lanes	12	20
USB revision	3	no data
Total number of SATA ports	12	no data
Max number of SATA 6 Gb/s Ports	12	no data
Number of USB ports	8	no data
Integrated LAN	2x10/2.5/1 GBE + 2x2.5/1 GBE	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.

Atom C3558 1.53

U300 5.24
+242%

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 C3558 2431

U300 8328
+243%

Gaming performance

Pros & cons summary

Performance score	1.53	5.24
Recency	15 August 2017	1 January 2023
Physical cores	4	5
Threads	4	6
Power consumption (TDP)	16 Watt	55 Watt

Atom C3558 has 243.8% lower power consumption.

U300, on the other hand, has a 242.5% higher aggregate performance score, an age advantage of 5 years, and 25% more physical cores and 50% more threads.

The U300 is our recommended choice as it beats the Atom C3558 in performance tests.

Be aware that Atom C3558 is a server/workstation processor while U300 is a notebook one.

Should you still have questions on choice between Atom C3558 and U300, ask them in Comments section, and we shall answer.