Pentium E6800 vs Core 2 Quad Q8400s

Primary details

Comparing Core 2 Quad Q8400s and Pentium E6800 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	2678
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	0.01
Market segment	Desktop processor	Desktop processor
Power efficiency	no data	1.08
Architecture codename	Yorkfield (2007−2009)	Wolfdale (2008−2010)
Release date	19 April 2009 (15 years ago)	29 August 2010 (14 years ago)
Launch price (MSRP)	no data	$831

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core 2 Quad Q8400s and Pentium E6800 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	4	2
Base clock speed	2.66 GHz	3.33 GHz
Boost clock speed	0.67 GHz	0.33 GHz
Bus rate	1333 MHz	no data
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	4 MB (shared)	2 MB (shared)
L3 cache	0 KB	0 KB
Chip lithography	45 nm	45 nm
Die size	2x 82 mm2	82 mm2
Maximum core temperature	no data	74 °C
Maximum case temperature (TCase)	76 °C	no data
Number of transistors	456 million	228 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	0.85V-1.3625V	0.85V-1.3625V

Compatibility

Information on Core 2 Quad Q8400s and Pentium E6800 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	1
Socket	FCLGA775,LGA775	LGA775
Power consumption (TDP)	65 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q8400s and Pentium E6800. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE2, Intel® SSE3, Intel® SSSE3
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	-	-
Hyper-Threading Technology	-	-
Idle States	+	+
Thermal Monitoring	+	+
Demand Based Switching	-	-

Security technologies

Core 2 Quad Q8400s and Pentium E6800 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q8400s and Pentium E6800 are enumerated here.

VT-d	no data	-
VT-x	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q8400s and Pentium E6800. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

DDR1, DDR2, DDR3

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

no data

Peripherals

Specifications and connection of peripherals supported by Core 2 Quad Q8400s and Pentium E6800.

PCIe version

2.0

2.0

Pros & cons summary

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Recency	19 April 2009	29 August 2010
Physical cores	4	2
Threads	4	2

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Should you still have questions on choice between Core 2 Quad Q8400s and Pentium E6800, ask them in Comments section, and we shall answer.

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