These are my current specs:
Operating System
Microsoft Windows 7 Professional 32-bit
CPU
Intel Core i5 650 @ 3.20GHz 45 °C
Clarkdale 32nm Technology
RAM
4.00 GB Dual-Channel DDR3 @ 666MHz (9-9-9-24)
Motherboard
Intel Corporation DP55WG (LGA 1156) 34 °C
Graphics
S23B370 (1920x1080@60Hz)
SyncMaster (1600x900@60Hz)
512MB GeForce GTS 250 (XFX Pine Group) 57 °C
Hard Drives
932GB Seagate ST31000524AS ATA Device (SATA) 36 °C
Optical Drives
DTSoftBusCd00
HL-DT-ST DVDRAM GH22NS50 ATA Device
Audio
Realtek High Definition Audio
I'm thinking of getting a GTX 670 2GB, and I know there will be a bottleneck, but what kind of bottleneck should I expect? How much worse will the card perform than with a new CPU?