i5-661 vs Xeon E5-2670 v3

Primary details

Comparing Xeon E5-2670 v3 and Core i5-661 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	880	2108
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.92	0.08
Market segment	Server	Desktop processor
Series	Intel Xeon E5	no data
Power efficiency	6.74	1.69
Architecture codename	Haswell-EP (2014−2015)	Clarkdale (2010−2011)
Release date	8 September 2014 (10 years ago)	7 January 2010 (14 years ago)
Launch price (MSRP)	$1,589	$252

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E5-2670 v3 has 2300% better value for money than i5-661.

Detailed specifications

Xeon E5-2670 v3 and Core i5-661 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	12 (Dodeca-Core)	2 (Dual-core)
Threads	24	4
Base clock speed	2.3 GHz	3.33 GHz
Boost clock speed	3.1 GHz	3.6 GHz
Bus type	QPI	no data
Bus rate	2 × 9.6 GT/s	2.5 GT/s
Multiplier	23	no data
L1 cache	64K (per core)	64 KB (per core)
L2 cache	3 MB	256 KB (per core)
L3 cache	30 MB (shared)	4 MB (shared)
Chip lithography	22 nm	32 nm
Die size	306.18 mm2	81 mm2
Maximum core temperature	85 °C	70 °C
Number of transistors	4700 Million	382 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E5-2670 v3 and Core i5-661 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 (Multiprocessor)	1
Socket	FCLGA2011	FCLGA1156
Power consumption (TDP)	120 Watt	87 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2670 v3 and Core i5-661. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX2	Intel® SSE4.2
AES-NI	+	+
FMA	+	-
AVX	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	1.0
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	+	-
Flex Memory Access	-	no data
Demand Based Switching	+	-
PAE	46 Bit	36 Bit
FDI	no data	+

Security technologies

Xeon E5-2670 v3 and Core i5-661 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2670 v3 and Core i5-661 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2670 v3 and Core i5-661. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1600, DDR4-1866, DDR4-2133	DDR3
Maximum memory size	768 GB	16.38 GB
Max memory channels	4	2
Maximum memory bandwidth	68 GB/s	21 GB/s
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel® HD Graphics for Previous Generation Intel® Processors
Clear Video HD	no data	+

Graphics interfaces

Available interfaces and connections of Xeon E5-2670 v3 and Core i5-661 integrated GPUs.

Number of displays supported

no data

2

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2670 v3 and Core i5-661.

PCIe version	3.0	2.0
PCI Express lanes	40	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.

---

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	8.87	1.61
Recency	8 September 2014	7 January 2010
Physical cores	12	2
Threads	24	4
Chip lithography	22 nm	32 nm
Power consumption (TDP)	120 Watt	87 Watt

---

Should you still have questions on choice between Xeon E5-2670 v3 and Core i5-661, 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.

---