I had Intel Pentium dual-core with 4 GB ram with 2.6GHz of processor speed which had DDR2 SD RAM type memory so can I play gta5 with this specifications?
Correct, a Quad and more memory would be rerquired.
(My X5460 @4.1 GHz with 8 GB DDR2 runs it actually quite fine, but that still fits into the requirements)