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Intel Core i5-2557M

The Intel Core i5-2557M is power efficient ULV (Ultra Low Voltage) processor for thin and light laptops. The base frequency of 1.7 GHz is relatively low, but due to Turbo Boost 2.0, the CPU may clock up to 2.7 GHz (on core loaded, 2.4 GHz with both cores loaded). However, this is depending on the cooling and power consumption of the laptop. Due to HyperThreading, the i5-2557M is able to handle 4 threads in parallel. Compared to the Core i7-2657M, the i5 offers less cache but a higher base clock speed and faster graphics turbo boost.

Sandy Bridge is the evolutionary successor of the Arrandale architecture. The most noteable improvements is the improved Turbo 2.0 and the integration of the graphics card into the 32nm CPU core. 

The integrated Intel HD Graphics 3000 clocked at 350 or 1200MHz (Turbo Boost). Due to the slower clock rate, compared to HD Graphics 3000 in 35W and 45W processors (usually clocked at 650-1100/1300MHz in non LV processors), the performance should be noticeable lower.

The performance of the CPU should be a bit higher than a similar clocked Arrandale Core i5. In our benchmarks (see below), the similar 2657M ULV processor was as fast as a Core i3-2310M due to the high Turbo Boost frequencies. However, the laptop cooling system has to keep the processor relatively cool for the Turbo Boost to work often.

The TDP of 17W (includes the integrated GPU and memory controller) allows the use of the 2557M CPU in small subnotebooks.

SeriesIntel Core i5
CodenameSandy Bridge
Clock Rate1700 - 2700 MHz
Level 1 Cache128 KB
Level 2 Cache512 KB
Level 3 Cache3072 KB
Number of Cores / Threads2 / 4
Max. Power Consumption (TDP = Thermal Design Power)17 Watt
Transistor Count624 Million
Manufacturing Technology32 nm
Die Size149 mm2
Max. Temperature100 °C
SocketBGA1023
FeaturesTurbo Boost 2.0, VPro, Hyper-Threading, Virtualization VT-x, Virtualization for Directed I/O (VT-d), Trusted Execution, AES, Intel 64, Anti-Theft, My WiFi, Idle States, Enhanced SpeedStep, Thermal Monitorin, Execute Disable Bit
GPUIntel HD Graphics 3000 (350 - 1200 MHz)
64 Bit64 Bit support
Hardware VirtualizationVT-x, VT-d
Starting Price $250 U.S.
Announcement Date06/19/2011
Product Link (external)Intel Core i5 2557M

CPU Benchmarks

wPrime 2.0x: 1024m
0% 100%
min: 764.61     avg: 768.5 (92.33%)     max: 772.419 seconds*
wPrime 2.0x: 32m
0% 100%
min: 23.555     avg: 23.7 (96.12%)     max: 23.773 seconds*
3DMark Vantage: P CPU no PhysX 1280x1024
0% 100%
min: 7260     avg: 7452 (18.64%)     max: 7644 Points
3DMark 06 - CPU:
0% 100%
min: 2738     avg: 2750 (29.47%)     max: 2762 Points
Cinebench R11.5: CPU Multi 64Bit
0% 100%
min: 2.18     avg: 2.2 (11.48%)     max: 2.25 Points
Cinebench R10: Rendering Single CPUs 64Bit
0% 100%
min: 4201     avg: 4202.5 (16.86%)     max: 4204 Points
Cinebench R10: Rendering Multiple CPUs 64Bit
0% 100%
min: 8266     avg: 8307.5 (21.19%)     max: 8349 Points
Cinebench R10: Rendering Single 32Bit
0% 100%
min: 3382     avg: 3419 (50.3%)     max: 3456 Points
Cinebench R10: Rendering Multiple CPUs 32Bit
0% 100%
min: 6223     avg: 6533.5 (18.79%)     max: 6844 Points
Super Pi mod 1.5 XS 1M:
0% 100%
min: 14     avg: 14 (98.9%)     max: 14 Seconds*
Super Pi mod 1.5 XS 2M:
0% 100%
min: 33     avg: 33.5 (99.46%)     max: 34 Seconds*
Super Pi Mod 1.5 XS 32M:
0% 100%
min: 763     avg: 771 (96.63%)     max: 779 Seconds*
SiSoft Sandra Dhrystone (MIPS):
0% 100%
min: 37300     avg: 38565 (18.3%)     max: 39830 MIPS
SiSoft Sandra Whetstone (MFLOPS):
0% 100%
min: 28460     avg: 28470 (21.84%)     max: 28480 MFLOPS
Windows 7 Experience Index: Processor
0% 100%
min: 6.8     avg: 6.8 (84.13%)     max: 6.8 points
- Range of benchmarks for this CPU
- Average benchmark score

Reviews for the Intel Core i5 2557M processor

Acer TravelMate 8481T-6440 (Intel HD Graphics 3000, 14.0")
» Acer TravelMate 8481T-6440 - External Review

Apple Macbook Air 13 inch 2011-07 (Intel HD Graphics 3000, 13.3")
» Review Apple MacBook Air 13 Mid 2011 (1.7 GHz, 256 GB SSD) Subnotebook - Review
» Apple Macbook Air 13 inch 2011-07 MC966D/A - External Review

Asus UX31E-RY009V (Intel HD Graphics 3000, 13.3")
» Asus UX31E-RY009V - External Review

Asus Zenbook UX31E-DH52B (Intel HD Graphics 3000, 13.3")
» Asus Zenbook UX31E-DH52B Laptop Review - Review
» Asus Zenbook UX31E-DH52B - External Review

Asus Zenbook UX31E-DH53 (Intel HD Graphics (Sandy Bridge), 13.3")
» Asus Zenbook UX31E-DH53 - External Review

Asus ZenBook UX31E-RY009V (Intel HD Graphics 3000, 13.3")
» Asus ZenBook UX31E-RY009V - External Review

Toshiba Portégé Z830-104 (Intel HD Graphics 3000, 13.3")
» Toshiba Portégé Z830-104 - External Review

Toshiba Portégé Z830-10E (Intel HD Graphics 3000, 13.3")
» Toshiba Portégé Z830-10E - External Review

» Mobile CPU Comparison
Comparison of all mobile CPU series

» Mobile Processors - Benchmarklist
Benchmarklist of all known CPUs that are used in laptops (desktop and laptop CPUs)

Other CPUs of the series Intel Core i5

» Intel Core i5 4340M
   2.9 GHz / 0.5 MB + 3 MB
» Intel Core i5 5287U
   2.9 GHz / 0.5 MB + 3 MB
» Intel Core i5 4210H
   2.9 GHz / 0.5 MB + 3 MB
» Intel Core i5 4330M
   2.8 GHz / 0.5 MB + 3 MB
» Intel Core i5 4200H
   2.8 GHz / 0.5 MB + 3 MB
» Intel Core i5 5257U
   2.7 GHz / 0.5 MB + 3 MB
» Intel Core i5 4308U
   2.8 GHz / 0.5 MB + 3 MB
» Intel Core i5 4310M
   2.7 GHz / 0.5 MB + 3 MB
» Intel Core i5 4400E
   2.7 GHz / 0.5 MB + 3 MB
» Intel Core i5 4300M
   2.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 4210M
   2.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 4288U
   2.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 4278U
   2.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 3380M
   2.9 GHz / 0.5 MB + 3 MB
» Intel Core i5 3360M
   2.8 GHz / 0.5 MB + 3 MB
» Intel Core i5 4200M
   2.5 GHz / 0.5 MB + 3 MB
» Intel Core i5 3340M
   2.7 GHz / 0.5 MB + 3 MB
» Intel Core i5 3320M
   2.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 4258U
   2.4 GHz / 0.5 MB + 3 MB
» Intel Core i5 3230M
   2.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 5300U
   2.3 GHz / 0.5 MB + 3 MB
» Intel Core i5 5350U
   1.8 GHz / 0.5 MB + 3 MB
» Intel Core i5 3210M
   2.5 GHz / 0.5 MB + 3 MB
» Intel Core i5 2540M
   2.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 4310U
   2 GHz / 0.5 MB + 3 MB
» Intel Core i5 4360U
   1.5 GHz / 0.5 MB + 3 MB
» Intel Core i5 5200U
   2.2 GHz / 0.5 MB + 3 MB
» Intel Core i5 5250U
   1.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 4300U
   1.9 GHz / 0.5 MB + 3 MB
» Intel Core i5 4350U
   1.4 GHz / 0.5 MB + 3 MB
» Intel Core i5 2520M
   2.5 GHz / 0.5 MB + 3 MB
» Intel Core i5 2450M
   2.5 GHz / 0.5 MB + 3 MB
» Intel Core i5 580M
   2.67 GHz / 0.5 MB + 3 MB
» Intel Core i5 2435M
   2.4 GHz / 0.5 MB + 3 MB
» Intel Core i5 2430M
   2.4 GHz / 0.5 MB + 3 MB
» Intel Core i5 2415M
   2.3 GHz / 0.5 MB + 3 MB
» Intel Core i5 2410M
   2.3 GHz / 0.5 MB + 3 MB
» Intel Core i5 3437U
   1.9 GHz / 0.5 MB + 3 MB
» Intel Core i5 560M
   2.67 GHz / 0.5 MB + 3 MB
» Intel Core i5 4210U
   1.7 GHz / 0.5 MB + 3 MB
» Intel Core i5 4260U
   1.4 GHz / 0.5 MB + 3 MB
» Intel Core i5 3427U
   1.8 GHz / 0.5 MB + 3 MB
» Intel Core i5 4402E
   1.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 4200U
   1.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 4250U
   1.3 GHz / 0.5 MB + 3 MB
» Intel Core i5 480M
   2.67 GHz / 0.5 MB + 3 MB
» Intel Core i5 540M
   2.53 GHz / 0.5 MB + 3 MB
» Intel Core i5 460M
   2.53 GHz / 0.5 MB + 3 MB
» Intel Core i5 3337U
   1.8 GHz / 0.5 MB + 3 MB
» Intel Core i5 520M
   2.4 GHz / 0.5 MB + 3 MB
» Intel Core i5 450M
   2.4 GHz / 0.5 MB + 3 MB
» Intel Core i5 3317U
   1.7 GHz / 0.5 MB + 3 MB
» Intel Core i5 430M
   2.26 GHz / 0.5 MB + 3 MB
» Intel Core i5 4300Y
   1.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 4302Y
   1.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 2557M
   1.7 GHz / 0.5 MB + 3 MB
» Intel Core i5 3439Y
   1.5 GHz / 0.5 MB + 3 MB
» Intel Core i5 4202Y
   1.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 4220Y
   1.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 4210Y
   1.5 GHz / 0.5 MB + 3 MB
» Intel Core i5 2467M
   1.6 GHz / 0.5 MB + 3 MB
» Intel Core i5 3339Y
   1.5 GHz / 0.5 MB + 3 MB
» Intel Core i5 4200Y
   1.4 GHz / 0.5 MB + 3 MB
» Intel Core i5 2537M
   1.4 GHz / 0.5 MB + 3 MB
» Intel Core i5 560UM
   1.33 GHz / 0.5 MB + 3 MB
» Intel Core i5 470UM
   1.33 GHz / 0.5 MB + 3 MB
» Intel Core i5 540UM
   1.2 GHz / 0.5 MB + 3 MB
» Intel Core i5 520UM
   1.06 GHz / 0.5 MB + 3 MB
» Intel Core i5 430UM
   1.2 GHz / 0.5 MB + 3 MB

Surrounding CPUs

- AMD A-Series A10-4600M
   2.3 GHz / 4 MB
- AMD A-Series A10-4657M
   2.3 GHz / 4 MB
- Intel Core i3 2312M
   2.1 GHz / 0.5 MB + 3 MB
- Intel Core i3 2310M
   2.1 GHz / 0.5 MB + 3 MB
- Intel Core i3 2308M
   2.1 GHz / 0.5 MB + 3 MB
» Intel Core i5 2557M
   1.7 GHz / 0.5 MB + 3 MB
+ AMD A-Series A10-5745M
   2.1 GHz / 4096 KB
+ AMD A-Series A8-5550M
   2.1 GHz / 4096 KB
+ AMD A-Series A8-5557M
   2.1 GHz / 4096 KB
+ AMD Kaveri FX-7500
   2.1 GHz / 4096 KB
+ AMD Kaveri A10 Pro-7350B
   2.1 GHz / 4096 KB
> Notebook / Laptop Reviews and News > FAQ / Tips / Technics > Notebook Processors > Intel Core i5 2557M Notebook Processor
Author: Klaus Hinum (Update: 2012-05-26)