FX-8100 vs Phenom II X4 840T

Primary details

Comparing Phenom II X4 840T and FX-8100 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2150	1736
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.28	no data
Market segment	Desktop processor	Desktop processor
Power efficiency	1.48	2.54
Architecture codename	Zosma (2010−2011)	Zambezi (2011−2012)
Release date	1 September 2010 (14 years ago)	12 October 2011 (13 years ago)
Launch price (MSRP)	$80	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Phenom II X4 840T and FX-8100 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)	8 (Octa-Core)
Threads	4	8
Base clock speed	2.9 GHz	2.8 GHz
Boost clock speed	3.2 GHz	3.7 GHz
L1 cache	128 KB (per core)	384 KB
L2 cache	512 KB (per core)	8 MB
L3 cache	6 MB (shared)	8 MB (shared)
Chip lithography	45 nm	32 nm
Die size	346 mm2	315 mm2
Number of transistors	904 million	1,200 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	-	+

Compatibility

Information on Phenom II X4 840T and FX-8100 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	AM3	AM3+
Power consumption (TDP)	95 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Phenom II X4 840T and FX-8100. You'll probably need this information if you require some particular technology.

AES-NI	-	+
FMA	-	+
AVX	-	+

Virtualization technologies

Virtual machine speed-up technologies supported by Phenom II X4 840T and FX-8100 are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Phenom II X4 840T and FX-8100. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

DDR3

Peripherals

Specifications and connection of peripherals supported by Phenom II X4 840T and FX-8100.

PCIe version

2.0

2.0

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	1.49	2.55
Recency	1 September 2010	12 October 2011
Physical cores	4	8
Threads	4	8
Chip lithography	45 nm	32 nm

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Should you still have questions on choice between Phenom II X4 840T and FX-8100, ask them in Comments section, and we shall answer.

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