The memory we selected for our tests can be considered standard. Two 1-GB DDR2-667 SO-DIMMs are extremely affordable these days, which is why you might as well consider going for 3 GB or 4 GB of RAM. Windows XP and especially Windows Vista will perform better by being able to reduce data swapping to the slower swap file on the hard drive. Vista will be able to efficiently utilize the SuperFetch feature, which pre-loads applications into available RAM space in order to make them available faster once you launch them.
Remember that the memory speed directly depends on the processor speed with all AMD64 processors. In the case of the Turion 64 X2 family, we saw effective memory clock speeds of 300-333 MHz. Please have a look at the following table on one of the following pages to check the effective clock speed for the Turion 64 X2 processor of your choice.