i7-2675QM vs i7-3820QM

Place in the ranking	1516	1762
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i7	Intel Core i7
Power efficiency	7.47	5.11
Architecture codename	Ivy Bridge (2012−2013)	Sandy Bridge (2011−2013)
Release date	29 April 2012 (12 years ago)	12 October 2011 (13 years ago)
Launch price (MSRP)	$498	$378

Detailed specifications

Core i7-3820QM and Core i7-2675QM 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	8
Base clock speed	2.7 GHz	2.2 GHz
Boost clock speed	3.7 GHz	3.1 GHz
Bus type	no data	DMI 2.0
Bus rate	5 GT/s	4 × 5 GT/s
Multiplier	no data	22
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	256K (per core)
L3 cache	8 MB (shared)	6 MB (shared)
Chip lithography	22 nm	32 nm
Die size	160 mm²	216 mm²
Maximum core temperature	105 °C	100 °C
Number of transistors	1,400 million	1,160 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i7-3820QM and Core i7-2675QM 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	FCBGA1224,FCPGA988	FCBGA1224
Power consumption (TDP)	45 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-3820QM and Core i7-2675QM. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	Intel® AVX
AES-NI	+	+
FMA	-	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
My WiFi	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
Demand Based Switching	-	-
FDI	+	+
Fast Memory Access	+	+

Security technologies

Core i7-3820QM and Core i7-2675QM technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-3820QM and Core i7-2675QM are enumerated here.

AMD-V	+	-
VT-d	+	-
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-3820QM and Core i7-2675QM. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3-1066, DDR3-1333
Maximum memory size	32 GB	16 GB
Max memory channels	2	2
Maximum memory bandwidth	25.6 GB/s	21.335 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics 4000	Intel HD Graphics 3000
Quick Sync Video	+	+
Clear Video HD	+	+
Graphics max frequency	1.25 GHz	1.2 GHz
InTru 3D	+	+

Graphics interfaces

Available interfaces and connections of Core i7-3820QM and Core i7-2675QM integrated GPUs.

Number of displays supported	3	2
eDP	+	+
DisplayPort	+	+
HDMI	+	+
SDVO	+	+
CRT	+	+

Peripherals

Specifications and connection of peripherals supported by Core i7-3820QM and Core i7-2675QM.

PCIe version	3.0	2.0
PCI Express lanes	16	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.

i7-3820QM 3.55
+46.1%

i7-2675QM 2.43

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

i7-3820QM 5637
+46.2%

i7-2675QM 3856

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

i7-3820QM 626
+40.4%

i7-2675QM 446

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

i7-3820QM 2137
+51.3%

i7-2675QM 1412

Gaming performance

Pros & cons summary

Performance score	3.55	2.43
Integrated graphics card	1.18	0.66
Recency	29 April 2012	12 October 2011
Chip lithography	22 nm	32 nm

i7-3820QM has a 46.1% higher aggregate performance score, 78.8% faster integrated GPU, an age advantage of 6 months, and a 45.5% more advanced lithography process.

The Core i7-3820QM is our recommended choice as it beats the Core i7-2675QM in performance tests.

Should you still have questions on choice between Core i7-3820QM and Core i7-2675QM, ask them in Comments section, and we shall answer.