Core 2 Duo E6400 vs Xeon E3-1585 v5

Primary details

Comparing Xeon E3-1585 v5 and Core 2 Duo E6400 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1174	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.97	no data
Market segment	Server	Desktop processor
Series	Intel Xeon E3	no data
Power efficiency	7.70	no data
Architecture codename	Skylake-H (2015−2016)	Conroe (2006−2007)
Release date	31 May 2016 (8 years ago)	July 2006 (18 years ago)
Launch price (MSRP)	$556	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E3-1585 v5 and Core 2 Duo E6400 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	4 (Quad-Core)	2 (Dual-core)
Threads	8	2
Base clock speed	3.5 GHz	2.13 GHz
Boost clock speed	3.9 GHz	2.13 GHz
Bus type	DMI 3.0	no data
Bus rate	4 × 8 GT/s	1066 MHz
Multiplier	35	no data
L1 cache	64 KB (per core)	64 KB
L2 cache	256 KB (per core)	2 MB
L3 cache	8 MB (shared)	0 KB
Chip lithography	14 nm	65 nm
Die size	171 mm2	143 mm2
Maximum core temperature	100 °C	61 °C
Number of transistors	2,300 million	291 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	no data	0.85V-1.5V

Compatibility

Information on Xeon E3-1585 v5 and Core 2 Duo E6400 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	1 (Uniprocessor)	1
Socket	FCBGA1440	LGA775,PLGA775
Power consumption (TDP)	65 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E3-1585 v5 and Core 2 Duo E6400. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	no data
AES-NI	+	-
AVX	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
eDRAM	128 MB	no data
Turbo Boost Technology	2.0	-
Hyper-Threading Technology	+	-
TSX	+	-
Idle States	+	+
Thermal Monitoring	-	+
Demand Based Switching	no data	-
FDI	+	no data
FSB parity	no data	-

Security technologies

Xeon E3-1585 v5 and Core 2 Duo E6400 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E3-1585 v5 and Core 2 Duo E6400 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E3-1585 v5 and Core 2 Duo E6400. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3L,LPDDR3 1600 MHz, DDR4 2133 MHz at 1.2V	DDR1, DDR2, DDR3
Maximum memory size	64 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	34.134 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel Iris Pro Graphics P580	no data
Max video memory	64 GB	no data
Quick Sync Video	+	-
Clear Video	+	no data
Graphics max frequency	1.15 GHz	no data
Execution Units	72	no data

Graphics interfaces

Available interfaces and connections of Xeon E3-1585 v5 and Core 2 Duo E6400 integrated GPUs.

Number of displays supported

3

no data

Peripherals

Specifications and connection of peripherals supported by Xeon E3-1585 v5 and Core 2 Duo E6400.

PCIe version	3.0	no data
PCI Express lanes	16	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

---

Physical cores	4	2
Threads	8	2
Chip lithography	14 nm	65 nm

---

Should you still have questions on choice between Xeon E3-1585 v5 and Core 2 Duo E6400, 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.

---