Phenom II X4 955 (125W) vs A8-6600K

Primary details

Comparing A8-6600K and Phenom II X4 955 (125W) processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1964	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.23	no data
Market segment	Desktop processor	Desktop processor
Series	AMD A-Series (Desktop)	no data
Power efficiency	1.79	no data
Architecture codename	Richland (2013−2014)	Deneb (2009−2011)
Release date	1 June 2013 (11 years ago)	1 April 2009 (15 years ago)
Launch price (MSRP)	$142	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

A8-6600K and Phenom II X4 955 (125W) 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)	4 (Quad-Core)
Threads	4	4
Base clock speed	3.9 GHz	3.2 GHz
Boost clock speed	4.2 GHz	3.2 GHz
L1 cache	192 KB	128 KB (per core)
L2 cache	4096 KB	512 KB (per core)
L3 cache	0 KB	6 MB (shared)
Chip lithography	32 nm	45 nm
Die size	246 mm2	258 mm2
Maximum core temperature	74 °C	no data
Maximum case temperature (TCase)	74 °C	no data
Number of transistors	1,178 million	758 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-

Compatibility

Information on A8-6600K and Phenom II X4 955 (125W) 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	FM2	AM3
Power consumption (TDP)	100 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A8-6600K and Phenom II X4 955 (125W). You'll probably need this information if you require some particular technology.

AES-NI	+	-
FMA	FMA4	-
AVX	AVX	-
PowerNow	+	-
PowerGating	+	-
VirusProtect	+	-

Virtualization technologies

Virtual machine speed-up technologies supported by A8-6600K and Phenom II X4 955 (125W) are enumerated here.

AMD-V	+	+
IOMMU 2.0	+	-

Memory specs

Types, maximum amount and channel quantity of RAM supported by A8-6600K and Phenom II X4 955 (125W). Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-1866	DDR3
Max memory channels	2	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	AMD Radeon HD 8570D	On certain motherboards (Chipset feature)
Number of pipelines	256	no data
Enduro	+	-
Switchable graphics	+	-
UVD	+	-
VCE	+	-

Graphics interfaces

Available interfaces and connections of A8-6600K and Phenom II X4 955 (125W) integrated GPUs.

DisplayPort	+	-
HDMI	+	-

Graphics API support

APIs supported by A8-6600K and Phenom II X4 955 (125W) integrated GPUs, sometimes API versions are included.

DirectX

DirectX® 11

no data

Peripherals

Specifications and connection of peripherals supported by A8-6600K and Phenom II X4 955 (125W).

PCIe version

2.0

2.0

Pros & cons summary

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Recency	1 June 2013	1 April 2009
Chip lithography	32 nm	45 nm
Power consumption (TDP)	100 Watt	125 Watt

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