Intel Pentium 3558U vs AMD Phenom II X3 P820


General info

Comparing Phenom II X3 P820 and Pentium 3558U processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking24662467
Market segmentLaptopLaptop
Series3x AMD Phenom IIIntel Pentium
Architecture codenameChamplain (2010−2011)Haswell (2013−2015)
Release date12 May 2010 (13 years old)1 January 2014 (9 years old)
Launch price (MSRP)no data$161
Current priceno data$295 (1.8x MSRP)

Technical specs

Phenom II X3 P820 and Pentium 3558U 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 cores3 (Tri-Core)2 (Dual-core)
Base clock speedno data1.7 GHz
Boost clock speed1.8 GHz1.7 GHz
Bus support3600 MHzno data
L1 cache384 KB128 KB
L2 cache1.5 MB512 KB
L3 cacheno data2 MB
Chip lithography45 nm22 nm
Maximum core temperatureno data100 °C
64 bit support++
Windows 11 compatibility--
Unlocked multiplierno data-


Information on Phenom II X3 P820 and Pentium 3558U 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 configurationno data1
Power consumption (TDP)25 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Phenom II X3 P820 and Pentium 3558U. You'll probably need this information if you require some particular technology.

Instruction set extensionsintegrated DDR3 Memory Controller, Virtualization, AMD64, Advanced Virus Protection, SSE(1,2,3,4a)Intel® SSE4.1, Intel® SSE4.2
AES-NIno data-
VirusProtect+no data
Enhanced SpeedStep (EIST)no data+
Turbo Boost Technologyno data-
Hyper-Threading Technologyno data-
TSXno data-
Idle Statesno data+
Thermal Monitoringno data+
SIPPno data-
Smart Responseno data-
GPIOno data+
Smart Connectno data+
FDIno data-
AMTno data9.5
Matrix Storageno data-
HD Audiono data+
RSTno data+

Security technologies

Phenom II X3 P820 and Pentium 3558U technologies aimed at improving security, for example, by protecting against hacks.

TXTno data-
EDBno data+
Secure Keyno data+
Identity Protectionno data-
OS Guardno data-
Anti-Theftno data-

Virtualization technologies

Virtual machine speed-up technologies supported by Phenom II X3 P820 and Pentium 3558U are enumerated here.

VT-dno data-
VT-xno data+
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Phenom II X3 P820 and Pentium 3558U. Depending on the motherboards, higher memory frequencies may be supported.

Supported memory typesDDR3DDR3
Maximum memory sizeno data16 GB
Max memory channelsno data2
Maximum memory bandwidthno data25.6 GB/s
ECC memory supportno data-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel® HD Graphics for 4th Generation Intel® Processors
Quick Sync Videono data+
Clear Videono data+
Graphics max frequencyno data1 GHz

Graphics interfaces

Available interfaces and connections of Phenom II X3 P820 and Pentium 3558U integrated GPUs.

Number of displays supportedno data3
eDPno data+
DisplayPortno data+
HDMIno data+


Specifications and connection of peripherals supported by Phenom II X3 P820 and Pentium 3558U.

PCIe versionno data2.0
PCI Express lanesno data10
PCI supportno data-
USB revisionno data3.0
Total number of SATA portsno data2
Max number of SATA 6 Gb/s Portsno data2
Integrated IDEno data-
Number of USB portsno data4
Integrated LANno data-
UARTno 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.

Phenom II X3 P820 0.82
Pentium 3558U 0.82

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

Benchmark coverage: 20%

Phenom II X3 P820 1560
Pentium 3558U 2510

Pentium 3558U outperforms Phenom II X3 P820 by 61% in Cinebench 10 32-bit single-core.

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

Benchmark coverage: 20%

Phenom II X3 P820 4169
Pentium 3558U 4852

Pentium 3558U outperforms Phenom II X3 P820 by 16% in Cinebench 10 32-bit multi-core.

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

Benchmark coverage: 19%

Phenom II X3 P820 2043
Pentium 3558U 1926

Phenom II X3 P820 outperforms Pentium 3558U by 6% in 3DMark06 CPU.

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

Benchmark coverage: 17%

Phenom II X3 P820 2
Pentium 3558U 1

Phenom II X3 P820 outperforms Pentium 3558U by 6% in Cinebench 11.5 64-bit multi-core.

Gaming performance

Advantages and disadvantages

Recency 12 May 2010 1 January 2014
Boost clock speed 1800 1700
Chip lithography 45 nm 22 nm
Power consumption (TDP) 25 Watt 15 Watt

We couldn't decide between Phenom II X3 P820 and Pentium 3558U. The differences in performance seem too small.

Should you still have questions on choice between Phenom II X3 P820 and Pentium 3558U, ask them in Comments section, and we shall answer.

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AMD Phenom II X3 P820
Phenom II X3 P820
Intel Pentium 3558U
Pentium 3558U

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4.1 36 votes

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Questions and comments

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