Core i5-750 vs Core i7-3820

Primary details

Comparing Core i7-3820 and Core i5-750 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1405	1990
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.32	0.33
Market segment	Desktop processor	Desktop processor
Series	no data	Core i5 (Desktop)
Architecture codename	Sandy Bridge-E (2011−2013)	Lynnfield (2009−2010)
Release date	February 2012 (12 years ago)	23 September 2009 (14 years ago)
Launch price (MSRP)	$400	$150
Current price	$409 (1x MSRP)	$72 (0.5x MSRP)

Cost-effectiveness evaluation

Performance per price, higher is better.

i7-3820 has 603% better value for money than i5-750.

Detailed specifications

Core i7-3820 and Core i5-750 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)	4 (Quad-Core)
Threads	8	4
Base clock speed	3.6 GHz	2.66 GHz
Boost clock speed	3.8 GHz	3.2 GHz
Bus support	no data	2500 MHz
L1 cache	64 KB (per core)	256 KB
L2 cache	256 KB (per core)	1 MB
L3 cache	10240 KB (shared)	8 MB
Chip lithography	32 nm	45 nm
Die size	294 mm2	296 mm2
Maximum core temperature	67 °C	73 °C
Maximum case temperature (TCase)	67 °C	no data
Number of transistors	1270 million	774 Million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Core i7-3820 and Core i5-750 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	FCLGA2011	FCLGA1156,LGA1156
Power consumption (TDP)	130 Watt	95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-3820 and Core i5-750. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2, Intel® AVX	Intel® SSE4.2
AES-NI	+	-
AVX	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	1.0
Hyper-Threading Technology	+	-
Idle States	+	+
Thermal Monitoring	+	-
Smart Response	+	no data
Demand Based Switching	-	-
PAE	no data	36 Bit
Status	Discontinued	Discontinued

Security technologies

Core i7-3820 and Core i5-750 technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	+
Identity Protection	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-3820 and Core i5-750 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-3820 and Core i5-750. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3
Maximum memory size	64.23 GB	16 GB
Max memory channels	4	2
Maximum memory bandwidth	51.2 GB/s	21 GB/s
ECC memory support	-	no data

Peripherals

Specifications and connection of peripherals supported by Core i7-3820 and Core i5-750.

PCIe version	2.0	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.

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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 i7-3820 outperforms Core i5-750 by 127% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	3.72	1.64
Threads	8	4
Cost	$400	$150
Chip lithography	32 nm	45 nm
Power consumption (TDP)	130 Watt	95 Watt

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Should you still have questions on choice between Core i7-3820 and Core i5-750, ask them in Comments section, and we shall answer.

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