Intel core i5-2500K i5-2500S i5-2500T i5-2400S i5-2390T processors
Intel is expected to announce the release of the Sandy Bridge processors in the CES 2011 and it is high time to review some of these forthcoming processor.
The part number of the Sandy Bridge based processor has started appearing. It looks like intel is going to keep its i3 , i5 and i7 nomenclature that it used for the earlier Nehalem based processors. In this article let us take a look at some of i5 processors, which include Intel core i5-2500K , Core i5-2500, core i5-2500S , core i5-2500T , Core i5-2400, i5-2400S and core i5-2390T processors.
All of the core i5 processors have turbo boost enabled. Historically this is in the same way as the Arrandale i5 processors. Notice that the Sandy bridge i3 processors ( which include i3-2120. i3-2100 and i3-2100T) will have the turbo boost disabled.
All of the intel Sandy Bridge core i5 processors (core i5-2500K Core i5-2500, core i5-2500S core i5-2500T Core i5-2400 i5-2400S ), except the Core i5-2390T have 6 MB of L3 Cache. Notice that the 6 MB of the L3 cache is shared with the graphics controller in the Sandy Bridge processors.
A note on the part numbering scheme of the core i5 processors. The subscript S in a part number means that the processor TDP is less than normal. The four core i5 models with S subscripts will have 65 watt TDP. The parts with T have even less power consumption. The TDP of the T part with 4 core is 45Watts and TDP for i5 processors with 2 core is 35 Watts.
The Sandy Bridge processors, have, in general, limited overclocking feature. It is a limitation of the chipset. However, the K processors are unlockable and are designed for the overclocking.
All of the i5 processors except the T models (Core i5-2500T and Core i5-2390T) have graphics core working at 850 MHz with the turbo frequency being 1100 MHz. The Core i5-2500T and Core i5-2390T have nominal frequency of 650 MHz and turbo frequency of 1250 MHz.
All of the core i5 processors come with LGA 1155 sockets.
The Table below lists out all the core i5 processors, their frequencies and turbo frequencies.
Table : Intel Sandy Bridge core i5 processor comparison
|Part No||Core Freq||Turbo Freq||Core Thread||L3 Cache||Graphics Freq/Turbo Freq|
|Core i5-2500K||3.3 GHz||3.7 GHz||4/4||6 MB||850 MHz /1100 MHz|
|Core i5-2500||3.3 GHz||3.7 GHz||4/4||6 MB||850 MHz /1100 MHz|
|Core i5-2500S||2.7 GHz||3.7 GHz||4/4||6 MB||850 MHz /1100 MHz|
|Core i5-2500T||2.3 GHz||3.3 GHz||4/4||6 MB||650 MHz /1250 MHz|
|Core i5-2400||3.1 GHz||3.4 GHz||4/4||6 MB||850 MHz /1100 MHz|
|Core i5-2400S||2.5 GHz||3.3 GHz||4/4||6 MB||850 MHz /1100 MHz|
|Core i5-2390T||2.7 GHz||3.5 GHz||2/4||3 MB||650 MHz /1100 MHz|
Benchmarking results with core i5 processors
Intel has released some of the Sandy Bridge processors and some initial benchmarking result is available. The results, for example, show that the Sandy Bridge Core i5-2400 processor is expected to give an average of 20 to 25% performance improvement over the Core i5-760. Despite having the hyperthreading disabled, the core i5-2400 should have performance comparable to Core i7-880.
The comparison of the Sandy Bridge processor over the similarly clocked earlier Arrandale processors (Nehalem core) show an improvement of about 10%.
The are few things in the basket for the gamers. The first is the availability of the K suffix parts for gamers which overclocker experts definitely would like to try. The second is the improved performance of the core i5 processors for gaming with its improved in built graphics processor. In other words, you can think of getting a Radeon HD 5450 free when you purchase a Sandy Bridge processor.
It will be interesting to look for the i5 processor early next year when they are launched. In the mean time AMD is honing its Fusion processor to give a tough fight to the Sandy Bridge.