I know the Asus to be a very reliable well built brand. That I3 chip has 2 cores and 4 threads, runs at 2.3 GHz and has no hyperthreading. Since you didn't give the model no. for the I5, there's no way for us to compare the I3 vs the I5. The I5s all have hyperthreading I believe, and are faster in most cases than the I3.
Hi im upgrading from pentium4 desktop so all these are great for me, but which one is the best? All are in the same price range of what i want to spend €450
Thanks in advance for the help
Acer Aspire E1 Intel® Core™ i5 Processor, 4Gb RAM, 500Gb Hard Drive, 15.6 inch Laptop - Black/Silver
Asus K53E Intel Core i3-2350M Processor 4Gb RAM 500Gb 15.6 inch Laptop
Lenovo ™ G585 AMD E300, 4Gb RAM, 500Gb Hard Drive, 15.6in Laptop