You should be able to play pretty much anything with these specs. However, the Sempron CPU is surprisingly behind the times and mismatched to the RAM and GPU. So you'll definitely have some slowdown in more than a few games I'm afraid.
It really depends on how much a given game stresses the GPU vs. the CPU.
System Manufacturer/Model Number Custom-built OS Windows 7 Professional SP1 32-bit CPU Intel Core 2 Duo E6600 2.4GHz, overclocked to 2.7GHz Motherboard Asus PL5D2 Memory 4GB DDR2-667 (4x1GB in dual-channel config) Graphics Card nVidia GeForce 9800 GT Sound Card Creative X-Fi XtremeMusic Monitor(s) Displays Acer Screen Resolution 1920x1200 (DVI)
Keyboard Standard Mouse Microsoft wireless optical mouse PSU Antec TruePower 2.0 Case Cooler Master Centurion Cooling various fans Hard Drives OCZ SSD Vertex Plus 60GB SATA (Firmware 3.55), 64MB cache
Hitachi HD321KJ SATA, 320GB, 7200rpm, 16MB cache Internet Speed DSL; ~330KB/sec down, ~110KB/sec up Other Info Have a laptop too :) (Compaq CQ60 also with Win7 Pro SP1 32-bit)
Drives in both systems:
C: - Windows 7 + apps. Pagefile is fixed size and located at the very end of the partition.
D: - various temp files/cache for Firefox and apps/games.
E: - videos, music, misc. storage, torrent downloads, etc.
You are lucky. It is an AM2 socket. There are many pretty good CPUs for around $50 that would fit - e.g. an AMD 5xxx+. Just check on the Wattage because the Sempron draws only 45 Watts. But the board may be able to do better.
I love how AMD keep sockets alive for such a long time!
With intel it seems to be a new socket per CPU family.
With amd you can have a 2-3 year old pc and still drop in a new CPU. Well apart from bulldozer lol.
System Manufacturer/Model Number Built by badgers!!! OS Windows 7 Ultimate x64 & Mac OS X 10.7.1 CPU Intel Core i5 2500k Motherboard Asus P8z68 Memory Corsair Vengence 8gb 1866mhz Graphics Card XFX Ati HD6950 2Gb Sound Card Mobo Optical to Yamaha Rx-V667 7.2 home cinema system Monitor(s) Displays Samsung LED 32" TV Screen Resolution 1920x1080
Keyboard Saitek Cyborg V7 Mouse Saitek R.A.T 9 PSU Corsair HX650w Modular Case NZXT Phantom White Cooling Corsair H60 Push/Pull Hard Drives 120gb Corsair Force 3 SSD Internet Speed Too slow! Other Info AMD fusion E350N Home server-Windows Home Server 2011 (also made by badgers!)
2011 Macbook 2.4ghz Core2Duo, 4gb ddr3, 120gb Ocz Vertex SSD