hi, i just bought a new cpu from best buy and when im playing total war, it runs slow when i zoom in. i dont know that much about computers so i am listing what my cpu has that i got from their website. can someone tell me where my problem is? im guessing its either the video card, the processor, or both. im running it at the lowest settings, which helped, but im just not satisfied with the way the game looks. please help. thanks.

Product Features
Intel® Pentium® processor E5300
Features 2 processing cores, an 800MHz system bus, 2MB L2 cache and 2.6GHz processor speed per core.
Two processing cores
6GB DDR2 memory
640GB Serial ATA hard drive (7200 rpm)
Intel® Graphics Media Accelerator X4500
Features 512MB shared video memory for impressive images with stunning detail. High-definition audio with 5.1-channel surround sound support. HDMI port for connection to an HDTV or HD monitor.