Phenom X4 9850B vs Phenom II X3 P820

Aggregate performance score

Phenom II X3 P820
2010
3 cores / 3 threads, 25 Watt
0.69
Phenom X4 9850B
2008
4 cores / 4 threads, 95 Watt
1.27
+84.1%

Phenom X4 9850B outperforms Phenom II X3 P820 by an impressive 84% based on our aggregate benchmark results.

Primary details

Comparing Phenom II X3 P820 and Phenom X4 9850B processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking27352310
Place by popularitynot in top-100not in top-100
Market segmentLaptopDesktop processor
Series3x AMD Phenom IIno data
Power efficiency2.521.22
Architecture codenameChamplain (2010−2011)Agena (2007−2008)
Release date12 May 2010 (14 years ago)August 2008 (16 years ago)

Detailed specifications

Phenom II X3 P820 and Phenom X4 9850B 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)4 (Quad-Core)
Threads34
Boost clock speed1.8 GHz2.5 GHz
Bus rate3600 MHzno data
L1 cache384 KB128 KB (per core)
L2 cache1.5 MB512 KB (per core)
L3 cacheno data2 MB (shared)
Chip lithography45 nm65 nm
Die sizeno data285 mm2
Number of transistorsno data450 million
64 bit support++
Windows 11 compatibility--

Compatibility

Information on Phenom II X3 P820 and Phenom X4 9850B 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
SocketS1AM2+
Power consumption (TDP)25 Watt95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Phenom II X3 P820 and Phenom X4 9850B. You'll probably need this information if you require some particular technology.

Instruction set extensionsVirtualization, AMD64, Advanced Virus Protection, SSE(1,2,3,4a)no data
VirusProtect+-

Virtualization technologies

Virtual machine speed-up technologies supported by Phenom II X3 P820 and Phenom X4 9850B are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Phenom II X3 P820 and Phenom X4 9850B. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3no data

Gaming performance

Pros & cons summary


Performance score 0.69 1.27
Physical cores 3 4
Threads 3 4
Chip lithography 45 nm 65 nm
Power consumption (TDP) 25 Watt 95 Watt

Phenom II X3 P820 has a 44.4% more advanced lithography process, and 280% lower power consumption.

Phenom X4 9850B, on the other hand, has a 84.1% higher aggregate performance score, and 33.3% more physical cores and 33.3% more threads.

The Phenom X4 9850B is our recommended choice as it beats the Phenom II X3 P820 in performance tests.

Be aware that Phenom II X3 P820 is a notebook processor while Phenom X4 9850B is a desktop one.


Should you still have questions on choice between Phenom II X3 P820 and Phenom X4 9850B, ask them in Comments section, and we shall answer.

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AMD Phenom II X3 P820
Phenom II X3 P820
AMD Phenom X4 9850B
Phenom X4 9850B

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Community ratings

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4 48 votes

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