Atom E665C vs Xeon E5-2680

Primary details

Comparing Xeon E5-2680 and Atom E665C processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1096	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.81	no data
Market segment	Server	Laptop
Series	Xeon (Desktop)	no data
Power efficiency	4.31	no data
Architecture codename	Sandy Bridge-EP (2012)	Stellarton (2010)
Release date	6 March 2012 (12 years ago)	22 November 2010 (13 years ago)
Launch price (MSRP)	$1,723	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5-2680 and Atom E665C 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	8 (Octa-Core)	1 (Single-Core)
Threads	16	2
Base clock speed	2.7 GHz	no data
Boost clock speed	3.5 GHz	1.3 GHz
Bus rate	8 GT/s	no data
L1 cache	64K (per core)	64 KB (per core)
L2 cache	256K (per core)	512 KB (per core)
L3 cache	20 MB (shared)	0 KB
Chip lithography	32 nm	45 nm
Die size	435 mm2	26 mm2
Maximum core temperature	85 °C	no data
Number of transistors	2,270 million	47 million
64 bit support	+	-
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E5-2680 and Atom E665C 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	2	1
Socket	FCLGA2011	Intel BGA1466
Power consumption (TDP)	130 Watt	4 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2680 and Atom E665C. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	no data
AES-NI	+	-
AVX	+	-
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	+
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	-	no data
Demand Based Switching	+	no data

Security technologies

Xeon E5-2680 and Atom E665C 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 E5-2680 and Atom E665C are enumerated here.

VT-d	+	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2680 and Atom E665C. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR2
Maximum memory size	384 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	51.2 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

Intel GMA 600

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2680 and Atom E665C.

PCIe version	3.0	no data
PCI Express lanes	40	no data

Pros & cons summary

---

Recency	6 March 2012	22 November 2010
Physical cores	8	1
Threads	16	2
Chip lithography	32 nm	45 nm
Power consumption (TDP)	130 Watt	4 Watt

---

Should you still have questions on choice between Xeon E5-2680 and Atom E665C, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---