这样的配置能玩虐杀原形吗

推荐加内存到2G，至少1G。

CPU足够，如果卡的话可以考虑超频，不过应该不会卡。借官方的数据给你参考：

【配置要求】

Windows XP SP3 或 Windows Vista SP2
Intel Core 2 Duo 2.6GHz 或 AMD Athlon64 X2 3800+（A饭喜极而泣）
具备256M显存，支持SM3.0的DX9.0c显卡（NVIDIA GeForce 7800或更高；ATI Radeon X1800或更高）
系统内存1GB（XP）；2GB（Vista）
8G硬盘剩余空间
Operating System: Windows® XP (with Service Pack 3) and DirectX® 9.0c or (Windows Vista® with Service Pack 2)
Video Card: 256 MB 3D hardware accelerator card required - 100% DirectX® 9.0c with Shader Model 3 support*
Processor: Pentium(R) Intel Core® 2 Duo 2.6 GHz or AMD Athlon 64 X2 3800+ or better
RAM: 1 GB of RAM for Windows ® XP / 2 GB Windows ® Vista systems
Hard Drive Space: 8 GB of uncompressed hard disk space (Plus 500MB for swap file.)
Sound Card: DirectX 9.0 –compliant sound card
DVD-ROM: DVD-ROM
Peripheral:
100% Windows(R) XP/Vista - compatible mouse, keyboard and drivers
100% Windows(R) XP/Vista - compatible 4X DVD-ROM drive or better (600
K/sec sustained transfer rate) and drivers

*Supported Chipsets for Windows(R) XP and Vista
All NVIDIA® GeForce™ 7800 256 MB and better chipsets
All ATI® Radeon™ X1800 256 MB and better chipsets

你的显卡是多少？从上文看A卡至少X1800 N卡至少GF 7800GT，因此就是说显存不能少于256MB，频率等不能低于这些卡。