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- at 04:09:06 - _iPad_2_screen RSS Feed | Really Simple Syndication

Whatís the actual performance of new iPad 2 with A5 processor?



On temperature compared to old iPad 2 the improvement is not obvious, run the game "Infinity Blade 2" for one hour contrast data is reduced by only about 1 degree. Of course the new iPad is still horrifying. On performance, it nature is basically the same as for the structure there is no change. But it is worth attention that Anandtech gets iPad 2, 4 products in the maximum brightness / minimum brightness (black level) / gray color accuracy is better than the old iPad 2 performances, while the default color temperature is also lower so that the color is yellow.

Now it seems iPad 2 has four versions: 45nm LP A5 processor pure WiFi / WiFi + GSM / WiFi + CDMA version and 32nm LP version. The current well-known site Anandtech has already got this new version of the iPad 2 WiFi version to test, look at compared to the old version of iPad 2 what improvements there are.

New 32nm A5 processor
From the point of view on packaging in fact the new version of iPad 2 has no difference from old version, but after opening you can see through two aspects: First, the old version of iPad 2 preloaded system for iOS 5.0.1 or older, and the new iPad 2, 4 is preinstalled iOS 5.1; more accurate is to run Geekbench test software, the system information will be clearly pointed out iPad 2, 4 model.

Anandtech gets the iPad 2 purchased from the famous American retailer BestBuy, according to a small range of statistics relative to the old iPad 2 new iPad 2,4 is still relatively rare. More detailed analysis here for the time being, through a picture let us compares Apple A4, A5, A5 and A5X processing area size:

At present, semiconductor manufacturers, including Samsung are commonly used for 300nm wafer, while a wafer can be cut into 579 pieces of 45nm Apple old A5 processor, and after for the new 32nm process a wafer can be divided into the number of A5 processor can raise to 1015 pieces. Although these figures are calculated on the assumption that the yield is 100%, but at least in terms of the processor, Apple can save a lot of money. But reflected in the whole price it will not be large - ARM architecture SoC processor, including Apple A5, the wholesale price is generally about 15-30 dollars, for the $ 399 iPad 2 it is actually not save much money, and Apple is clearly more concerned about the market share.

Battery endurance test
First of all letís take a look at the most common Web browsing lifetime, Anandtech using the test conditions for the WiFi + 200nits brightness, life time in calculated by hours. You can see the Internet browsing time significantly improved, from iPad 2 of 11.7 hours to the iPad 2 of 10.1 hours it is increased by a half hour or so, about 15.8%. In the case of no change in the battery, the low leakage rate of processor natural can bring not little change.

While occupied the largest area in A5 processor PowerVR SGX 543MP2 GPU from 32nm HKMG process to get more gain than two Cortex-A9 core, the following two games Infinity Blade 2 and Riptide GP test results can clearly reflect this point. In which, "Infinity Blade 2" in the iPad 2, 4, the battery life is up to 7.9 hours, compared to the old version of iPad 2 itís increased by 29%; the data of "Riptide GP" is 8.82 hours that increased by about 30%.

In the use of GPU-accelerated video playback test it can also reflect the power of the new process. On H.264 720p High Profile playback time iPad 2,4 single charge even reached 15.7 hours, beyond the old iPad 2 by 18%. Of course, all this data is measured at a relatively low brightness - 200nits, about 40% of the rated brightness; but it is expected that the advantage will be significant after increasing the brightness.

On total power consumption test this data is also significant, pay attention to this data for the peak power consumption. iPad 2,4 compared to the old iPad 2 in the Sunspider Java script multi-threaded test lead in the largest, reaching 28%. In this pure CPU test data lead advantage is larger than the Internet browse, which is description of the machine power consumption in fact mainly from the screen, of course, except 3D games. Look at the new iPad A5X those data, which is at least one time more than the iPad 2, 4. You can imagine the new iPad installed with 32nm A5X will be greatly improved.

After Apple released the new iPad the price of entry-level 16GB WiFi version iPad 2 was cut to $ 399, but the changes on iPad 2 can be more than just these. Early April semiconductor development center website Chipworks after dismantling discovered the new generation of Apple TV and the recent produced iPad 2 WiFi version of the processor has been replaced by a new process A5 SoC processor, using Samsung 32nm HKMG LP process.

Summary
In fact, Apple's processor transferring to the Samsung 32nm HKMG LP process is a matter of course. After all, battery lifetime has a relatively large impact on user experience. The new iPad is also suffering, although Apple may continue to launch the next generation of iPad in future, before switch to 32nm A5X it is still very likely to happen. In the end Cell Phone Age is offering iPad 2 screen replacement for those who are looking forward at.

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9 Blog Posts 0 Comments 0 Following 0 Followers 9 User RSS Feed abonnieren
chriscui2016
@chriscui2016

Cell Phone Age Blog

Wholesale refurbished iPhone
Next Blog •
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