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Intel Core i5-3427U

The Intel Core i5-3427U is an ULV-processor for laptops based on the Ivy Bridge architecture released in Q2 2012. Due to Hyperthreading, the two cores can handle up to four threads in parallel leading to better utilization of the CPU. Each core offers a base speed of 1.8 GHz but can dynamically increase clock rates with Turbo Boost up to 2.6 GHz (for 2 active cores) and 2.8 GHz (for 1 active core). As its Sandy-Bridge-based predecessors, it offers a 3 MB L3-Cache.

Ivy Bridge is an enhanced die shrink of the Sandy Bridge architecture with improvements on both GPU and CPU performance. The CPUs are produced in 22nm (versus 32nm Sandy Bridge CPUs) and are the first to introduce 3D transistors for increased energy efficiency when compared to similarly clocked Sandy Bridge processors. Other new features are integrated PCI Express 3.0 and  DDR3(L)-1600 support.

The performance of the Core i5-3427U isslightly above a similarly clocked Sandy Bridge processor due to the architectural improvements. Therefore, overall performance is similar to the former Core i7-2677M or a Core i3-2330M.

The integrated Intel HD Graphics 4000 offers 16 Execution Units (EUs) clocked at 350 MHz up to 1150 MHz with Turbo Boost, delivering a performance comparable with an AMD Radeon HD 6620G.

The ULV-CPUs are rated at a TDP of 17 W including graphics card and memory controller.  Therefore, the CPU is suited for small laptops and ultrabooks.

SeriesIntel Core i5
CodenameIvy Bridge

Series: Core i5 Ivy Bridge

Intel Core i5-3380M compare2.9 - 3.6 GHz2 / 4 cores3 MB L3
Intel Core i5-3360M compare2.8 - 3.5 GHz2 / 4 cores3 MB L3
Intel Core i5-3340M compare2.7 - 3.4 GHz2 / 4 cores3 MB L3
Intel Core i5-3320M compare2.6 - 3.3 GHz2 / 4 cores3 MB L3
Intel Core i5-3230M compare2.6 - 3.2 GHz2 / 4 cores3 MB L3
Intel Core i5-3210M compare2.5 - 3.1 GHz2 / 4 cores3 MB L3
Intel Core i5-3437U compare1.9 - 2.9 GHz2 / 4 cores3 MB L3
Intel Core i5-3427U « 1.8 - 2.8 GHz2 / 4 cores3 MB L3
Intel Core i5-3337U compare1.8 - 2.7 GHz2 / 4 cores3 MB L3
Intel Core i5-3317U compare1.7 - 2.6 GHz2 / 4 cores3 MB L3
Intel Core i5-3439Y compare1.5 - 2.3 GHz2 / 4 cores3 MB L3
Intel Core i5-3339Y compare1.5 - 2 GHz2 / 4 cores3 MB L3
Clock Rate1800 - 2800 MHz
Level 1 Cache128 KB
Level 2 Cache512 KB
Level 3 Cache3 MB
Number of Cores / Threads2 / 4
Power Consumption (TDP = Thermal Design Power)17 Watt
Manufacturing Technology22 nm
Max. Temperature105 °C
FeaturesTurbo Boost 2.0, Hyper-Threading, Virtualization VT-x, AES, Intel 64, Anti-Theft, My WiFi, Idle States, Enhanced SpeedStep, Thermal Monitorin, Execute Disable Bit
GPUIntel HD Graphics 4000 (350 - 1150 MHz)
64 Bit64 Bit support
Starting Price$225 U.S.
Announcement Date05/01/2012
Product Link (external)


X264 HD Benchmark 4.0 - x264 Pass 2
min: 14.82     avg: 14.9     median: 14.9 (5%)     max: 15 fps
X264 HD Benchmark 4.0 - x264 Pass 1
min: 80     avg: 80.7     median: 80.7 (19%)     max: 81.3 fps
TrueCrypt - TrueCrypt Twofish
min: 0.221     avg: 0.2     median: 0.2 (4%)     max: 0.231 GB/s
SiSoft Sandra Dhrystone (MIPS) - SiSoft Sandra Dhrystone (MIPS)
min: 45000     avg: 49710     median: 51990 (25%)     max: 52140 MIPS
SiSoft Sandra Whetstone (MFLOPS) - SiSoft Sandra Whetstone (MFLOPS)
min: 31400     avg: 31997     median: 31750 (24%)     max: 32840 MFLOPS
3DMark - 3DMark Ice Storm Physics
min: 9077     avg: 18768     median: 18767.5 (15%)     max: 28458 Points
3DMark - 3DMark Cloud Gate Physics
min: 1110     avg: 1809     median: 1809 (5%)     max: 2508 Points
3DMark - 3DMark Fire Strike Standard Physics
min: 1645     avg: 2580     median: 2579.5 (5%)     max: 3514 Points
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

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