Intel Core i7-4578U vs Core i7-2675QM

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Combined performance score

i7-2675QM
2.55
+26.9%

Core i7-2675QM outperforms Core i7-4578U by 27% in our combined benchmark results.

General info

Comparing Core i7-2675QM and Core i7-4578U processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking16111796
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
SeriesIntel Core i7Intel Core i7
Architecture codenameSandy Bridge (2011−2013)Haswell (2013−2015)
Release date12 October 2011 (12 years old)21 July 2014 (9 years old)
Launch price (MSRP)$378$426
Current price$696 (1.8x MSRP)$900 (2.1x MSRP)

Technical specs

Core i7-2675QM and Core i7-4578U 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 cores4 (Quad-Core)2 (Dual-core)
Threads84
Base clock speed2.2 GHz3 GHz
Boost clock speed3.1 GHz3.5 GHz
L1 cache64K (per core)128 KB
L2 cache256K (per core)512 KB
L3 cache6 MB (shared)4 MB
Chip lithography32 nm22 nm
Die size216 mm2181 mm2
Maximum core temperature100 °C100 °C
Number of transistors1,160 million1300 Million
64 bit support++
Windows 11 compatibility--
Unlocked multiplierNoNo

Compatibility

Information on Core i7-2675QM and Core i7-4578U 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 configuration11
SocketFCBGA1224FCBGA1168
Power consumption (TDP)45 Watt28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-2675QM and Core i7-4578U. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® AVXIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
FMA+no data
AVX++
Enhanced SpeedStep (EIST)++
My WiFi+no data
Turbo Boost Technology2.02.0
Hyper-Threading Technology++
TSXno data-
Idle States++
Thermal Monitoring++
Flex Memory Access+no data
Demand Based Switching-no data
FDI++
Fast Memory Access+no data
StatusDiscontinuedDiscontinued

Security technologies

Core i7-2675QM and Core i7-4578U technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-2675QM and Core i7-4578U are enumerated here.

AMD-Vno data+
VT-d-+
VT-x++
EPT++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-2675QM and Core i7-4578U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3-1066, DDR3-1333DDR3
Maximum memory size16 GB16 GB
Max memory channels22
Maximum memory bandwidth21.3 GB/s25.6 GB/s
ECC memory support--

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
Intel HD Graphics 3000Intel Iris Graphics 5100
Max video memoryno data2 GB
Quick Sync Video++
Clear Video HD++
Graphics max frequency1.2 GHz1.2 GHz
InTru 3D++

Graphics interfaces

Available interfaces and connections of Core i7-2675QM and Core i7-4578U integrated GPUs.

Number of displays supported23
eDP++
DisplayPort++
HDMI++
VGAno data+
SDVO+no data
CRT+no data

Graphics image quality

Maximum display resolutions supported by Core i7-2675QM and Core i7-4578U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4no data3200x2000@60Hz
Max resolution over DisplayPortno data3200x2000@60Hz
Max resolution over VGAno dataN/A

Graphics API support

APIs supported by Core i7-2675QM and Core i7-4578U integrated GPUs, sometimes API versions are included.

DirectXno data11.2/12
OpenGLno data4.3

Peripherals

Specifications and connection of peripherals supported by Core i7-2675QM and Core i7-4578U.

PCIe version2.02
PCI Express lanes1612

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.

i7-2675QM 2.55
+26.9%
i7-4578U 2.01

Core i7-2675QM outperforms Core i7-4578U by 27% in our combined benchmark results.


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.

Benchmark coverage: 68%

i7-2675QM 3919
+27%
i7-4578U 3087

Core i7-2675QM outperforms Core i7-4578U by 27% in Passmark.

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.

Benchmark coverage: 42%

i7-2675QM 434
i7-4578U 838
+93.1%

Core i7-4578U outperforms Core i7-2675QM by 93% in GeekBench 5 Single-Core.

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.

Benchmark coverage: 42%

i7-2675QM 1366
i7-4578U 1574
+15.2%

Core i7-4578U outperforms Core i7-2675QM by 15% in GeekBench 5 Multi-Core.

Gaming performance

Advantages and disadvantages


Performance score 2.55 2.01
Integrated graphics card 0.66 1.81
Recency 12 October 2011 21 July 2014
Physical cores 4 2
Threads 8 4
Cost $378 $426
Chip lithography 32 nm 22 nm
Power consumption (TDP) 45 Watt 28 Watt

The Core i7-2675QM is our recommended choice as it beats the Core i7-4578U in performance tests.


Should you still have questions on choice between Core i7-2675QM and Core i7-4578U, ask them in Comments section, and we shall answer.

User ratings

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core i7-2675QM
Core i7-2675QM
Intel Core i7-4578U
Core i7-4578U

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Questions and comments

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