Re: Athlon 64 X2 or Turion 64 X2
the Athlon 64 X2 is usually faster, but the Turion 64 X2 uses less power (and therefore extends battery life)
the TK53 is only a 1.6GHZ chip which has 2x256kb L2 cache
the TL58 is 1.9GHZ and has 2x512kb L2 cache
In this particular case, the Turion 64 X2 (TL58) will actually be faster, and is likely to use less power.
Anyway, the Radeon Xpress 1150 should run most pre-2005 games, though it might struggle in some, such as Half-Life 2, unless you turn down the graphics low. But the 1.9GHZ Turion 64 X2 will be able to handle the games well.