Xeon E5440 vs Opteron 6276

Primary details

Comparing Opteron 6276 and Xeon E5440 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1411	2140
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	5.21	no data
Market segment	Server	Server
Power efficiency	3.29	1.77
Architecture codename	Interlagos (2011−2012)	no data
Release date	14 November 2011 (12 years ago)	1 January 2008 (16 years ago)
Launch price (MSRP)	$119	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Opteron 6276 and Xeon E5440 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	16 (Hexadeca-Core)	no data
Threads	16	no data
Base clock speed	2.3 GHz	2.83 GHz
Boost clock speed	3.2 GHz	no data
L1 cache	768 KB	no data
L2 cache	16 MB	no data
L3 cache	8 MB (per die)	12 MB L2 Cache
Chip lithography	32 nm	45 nm
Die size	316 mm2	no data
Maximum core temperature	no data	67 °C
Number of transistors	2,400 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	no data	0.85V-1.35V

Compatibility

Information on Opteron 6276 and Xeon E5440 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	4	no data
Socket	G34	LGA771
Power consumption (TDP)	115 Watt	80 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Opteron 6276 and Xeon E5440. You'll probably need this information if you require some particular technology.

AES-NI	+	-
FMA	+	-
AVX	+	-
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

Opteron 6276 and Xeon E5440 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 Opteron 6276 and Xeon E5440 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Opteron 6276 and Xeon E5440. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

no data

Peripherals

Specifications and connection of peripherals supported by Opteron 6276 and Xeon E5440.

PCIe version

2.0

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.

---

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.

---

Pros & cons summary

---

Performance score	4.15	1.55
Recency	14 November 2011	1 January 2008
Chip lithography	32 nm	45 nm
Power consumption (TDP)	115 Watt	80 Watt

---

Should you still have questions on choice between Opteron 6276 and Xeon E5440, 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.

---