Core i7-2640M vs Core i7-6800K

General info

Comparing Core i7-6800K and Core i7-2640M processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	920	1976
Place by popularity	not in top-100	not in top-100
Value for money	3.75	no data
Market segment	Desktop processor	Laptop
Series	no data	Intel Core i7
Architecture codename	Broadwell-E (2016)	Sandy Bridge (2011−2013)
Release date	31 May 2016 (7 years ago)	4 September 2011 (12 years ago)
Launch price (MSRP)	$345	$346
Current price	$195 (0.6x MSRP)	$114 (0.3x MSRP)

Value for money

Performance per price, higher is better.

Technical specs

Core i7-6800K and Core i7-2640M 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	6 (Hexa-Core)	2 (Dual-core)
Threads	12	4
Base clock speed	3.4 GHz	2.8 GHz
Boost clock speed	3.8 GHz	3.5 GHz
L1 cache	32 KB (per core)	128 KB
L2 cache	256 KB (per core)	512 KB
L3 cache	15 MB (shared)	4 MB
Chip lithography	14 nm	32 nm
Die size	no data	149 mm2
Maximum core temperature	67°	100 °C
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	624 Million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	Yes	No

Compatibility

Information on Core i7-6800K and Core i7-2640M 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 (Uniprocessor)
Socket	FCLGA2011	FCBGA1023,PPGA988
Power consumption (TDP)	140 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-6800K and Core i7-2640M. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® AVX
AES-NI	+	+
FMA	no data	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
My WiFi	no data	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	no data	+
Flex Memory Access	no data	+
Smart Response	+	no data
Demand Based Switching	no data	-
Turbo Boost Max 3.0	+	no data
FDI	no data	+
Fast Memory Access	no data	+
Status	Discontinued	Discontinued

Security technologies

Core i7-6800K and Core i7-2640M technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Identity Protection	no data	+
Anti-Theft	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-6800K and Core i7-2640M are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-6800K and Core i7-2640M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR3
Maximum memory size	128 GB	16 GB
Max memory channels	4	2
Maximum memory bandwidth	no data	21.3 GB/s
ECC memory support	-	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel HD Graphics 3000
Quick Sync Video	no data	+
Clear Video HD	no data	+
Graphics max frequency	no data	1.3 GHz
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Core i7-6800K and Core i7-2640M integrated GPUs.

Number of displays supported	no data	2
eDP	no data	+
DisplayPort	no data	+
HDMI	no data	+
SDVO	no data	+
CRT	no data	+

Peripherals

Specifications and connection of peripherals supported by Core i7-6800K and Core i7-2640M.

PCIe version	3.0	2.0
PCI Express lanes	28	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.

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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.

Core i7-6800K outperforms Core i7-2640M by 334% based on our aggregated benchmark results.

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Advantages and disadvantages

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Performance score	6.90	1.59
Recency	31 May 2016	4 September 2011
Physical cores	6	2
Threads	12	4
Cost	$345	$346
Chip lithography	14 nm	32 nm
Power consumption (TDP)	140 Watt	35 Watt

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Should you still have questions on choice between Core i7-6800K and Core i7-2640M, ask them in Comments section, and we shall answer.

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