PRO A6-8550B vs Xeon E5440

Primary details

Comparing Xeon E5440 and PRO A6-8550B processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2158	2367
Place by popularity	not in top-100	not in top-100
Market segment	Server	Desktop processor
Power efficiency	1.77	1.73
Architecture codename	no data	Godaveri (2014−2016)
Release date	1 January 2008 (17 years ago)	29 September 2015 (9 years ago)

Detailed specifications

Xeon E5440 and PRO A6-8550B 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	no data	2 (Dual-core)
Threads	no data	2
Base clock speed	2.83 GHz	3.5 GHz
Boost clock speed	no data	4 GHz
L2 cache	no data	1024 KB
L3 cache	12 MB L2 Cache	no data
Chip lithography	45 nm	28 nm
Die size	no data	245 mm2
Maximum core temperature	67 °C	71 °C
Maximum case temperature (TCase)	no data	72 °C
Number of transistors	no data	2,411 million
64 bit support	+	+
Windows 11 compatibility	-	no data
VID voltage range	0.85V-1.35V	no data

Compatibility

Information on Xeon E5440 and PRO A6-8550B 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	no data	1
Socket	LGA771	FM2+
Power consumption (TDP)	80 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5440 and PRO A6-8550B. You'll probably need this information if you require some particular technology.

AES-NI	-	+
FMA	-	+
AVX	-	+
FRTC	-	+
FreeSync	-	+
PowerTune	-	+
DualGraphics	-	+
TrueAudio	-	+
PowerNow	-	+
PowerGating	-	+
Out-of-band client management	-	+
VirusProtect	-	+
RAID	-	+
HSA	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	+	no data
FSB parity	+	no data

Security technologies

Xeon E5440 and PRO A6-8550B technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5440 and PRO A6-8550B are enumerated here.

AMD-V	-	+
VT-x	+	no data
EPT	-	no data
IOMMU 2.0	-	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5440 and PRO A6-8550B. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	no data	DDR3-2133
Max memory channels	no data	2

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	AMD Radeon R5 Graphics
iGPU core count	no data	4
จำนวนพาธไลน์	no data	256
Enduro	-	+
Switchable graphics	-	+
UVD	-	+
VCE	-	+

Graphics interfaces

Available interfaces and connections of Xeon E5440 and PRO A6-8550B integrated GPUs.

DisplayPort	-	+
HDMI	-	+

Graphics API support

APIs supported by Xeon E5440 and PRO A6-8550B integrated GPUs, sometimes API versions are included.

DirectX	no data	DirectX® 12
Vulkan	-	+

Peripherals

Specifications and connection of peripherals supported by Xeon E5440 and PRO A6-8550B.

PCIe version	no data	3.0
PCI Express lanes	no data	16

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	1.18
Recency	1 January 2008	29 September 2015
Chip lithography	45 nm	28 nm
Power consumption (TDP)	80 Watt	65 Watt

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Should you still have questions on choice between Xeon E5440 and PRO A6-8550B, ask them in Comments section, and we shall answer.

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