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My laptop model is ASUS A43TA.

The graphic card is excellent but the processor is not very powerful and I feel it could be better as sometimes my laptop become is slow and laggy.

Is it possible to upgrade this system?

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It would appear that your system has an AMD® Fusion APU A6-3400M/A4-3300M Processor. You should be able to tell whether you have the A6-3400M or A4-3300M processor using CPU-z.

It is very rare for mobile processors to be replaceable by the user. They are typically soldered directly to the motherboard to save space and make the system thinner and easier to assemble, typically the assumption is that you buy a system knowing what it can do and what you intend it to do.

Cheap laptops are not suited to playing games properly because they are built for portability and lack more powerful dedicated hardware as you are finding. They are perfectly good for some things but not others.

The graphics seems to suit your needs but you appear to be saying that your system sometimes has problems.

Your processor should be reasonably powerful so it may be that you either have too many programs running sucking up resources like memory. Try uninstalling programs that you do not regularly use, or look into finding out how much memory you have fitted and see if you can upgrade it.

The Asus page for your machine suggests you can fit up to 8GB of memory, that is where I would look first. Potentially you may also be able to replace your hard disk drive with an SSD to increase performance though this is a very expensive upgrade and you may end up increasing the speed of the system at the cost of reducing the amount of storage space.

You are going to have to do some research and find out

  1. What is causing your performance bottleneck - is there any program running in task manager that is using large amounts of CPU or memory
  2. How much memory you have in your system and where you can purchase more if you have less than 8GB. To fill your 8GB you would need to get 2 4GB DDR3 1333 MHz SDRAM SO-DIMM sticks.
  3. Whether you can afford to buy an SSD and also whether you can also afford to loose the storage space.
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so, I just only need to upgrade the RAM? ok..thanks for the informations..hope it will help me.. – trevor taming Jun 30 '12 at 22:01
    
if you only have 2GB of RAM the upgrading is definitely going to give you a good boost. If you have 4GB then you will want to be looking at other potential problems. – Mokubai Jun 30 '12 at 22:39

I have an Acer 7560, with the same processor, and I was able to switch to the 3410mx which is a lot more powerful, the processor is not hardwired into the motherboard, but the 3410m and no other of the Llano series AFAIK is not for sale to the final user, I was lucky enough to buy a totalled lap for about $50 dollars -with the processor intact -and change it to the faster processor and had to make BIOS, and memory upgrades, so it's technically possible. The motherboard according to the service manual can take up to the 3510mx with DDR3 1600mhz memory, so it's sweet. Hope this helps, but don't know about Asus. But your processor is a monster for the price, trust me, I could play 80% of the newer games on Steam with mid settings, at 25-60 FPS. search for 3400m on youtube and you will see what it can do. Hope this helps.

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did you even read the question? ASUS A43TA, not Acer 7560. These are two completely different manufacturers, and laptops. On the second point, WHY wake a 3 year old thread? – td512 Jun 14 '15 at 2:46
    
haha didn't see the date, sorry, tried to help though. XD – user458618 Jun 14 '15 at 3:00
    
Bumping an old question isn't by itself an issue. It's when the answer post fails to answer the question that we have a problem – bwDraco Jun 14 '15 at 5:54

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