Core 2 Duo T5800 vs Xeon E5-2666 V3

Primary details

Comparing Xeon E5-2666 V3 and Core 2 Duo T5800 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	850	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Laptop
Series	no data	Intel Core 2 Duo
Power efficiency	6.29	no data
Architecture codename	Haswell-EP (2014−2015)	Merom (2006−2008)
Release date	13 November 2014 (9 years ago)	1 October 2008 (16 years ago)

Detailed specifications

Xeon E5-2666 V3 and Core 2 Duo T5800 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	10 (Deca-Core)	2 (Dual-core)
Threads	20	2
Base clock speed	2.9 GHz	2 GHz
Boost clock speed	3.5 GHz	2 GHz
Bus rate	no data	800 MHz
L1 cache	64K (per core)	no data
L2 cache	256K (per core)	2 MB
L3 cache	25 MB (shared)	2 MB L2 Cache
Chip lithography	22 nm	65 nm
Die size	356 mm2	143 mm2
Maximum core temperature	no data	85 °C
Number of transistors	2,600 million	291 Million
64 bit support	+	+
Windows 11 compatibility	no data	-
VID voltage range	no data	1.075V-1.175V

Compatibility

Information on Xeon E5-2666 V3 and Core 2 Duo T5800 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	no data
Socket	2011-3	PPGA478
Power consumption (TDP)	135 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2666 V3 and Core 2 Duo T5800. You'll probably need this information if you require some particular technology.

AES-NI	+	-
AVX	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	no data	-
Hyper-Threading Technology	no data	-
TSX	+	-
Demand Based Switching	no data	-
AMT	no data	+
FSB parity	no data	-

Security technologies

Xeon E5-2666 V3 and Core 2 Duo T5800 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2666 V3 and Core 2 Duo T5800 are enumerated here.

VT-d	+	no data
VT-x	+	-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2666 V3 and Core 2 Duo T5800. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3, DDR4 2133 MHz Quad-channel

no data

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2666 V3 and Core 2 Duo T5800.

PCIe version	3.0	no data
PCI Express lanes	40	no data

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

---

---

Pros & cons summary

---

Recency	13 November 2014	1 October 2008
Physical cores	10	2
Threads	20	2
Chip lithography	22 nm	65 nm
Power consumption (TDP)	135 Watt	35 Watt

---

Should you still have questions on choice between Xeon E5-2666 V3 and Core 2 Duo T5800, 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.

---