New Graphic Card

[drkarasheed]

The following is a short description of my Desktop PC

Operating System
MS Windows 64-bit
CPU: AMD A8-3870 APU with Radeon(tm) HD Graphics

RAM
8.0GB
Motherboard
ASUSTeK COMPUTER INC. F1A75-V PRO (FM1 )
Graphics: ATI Radeon HD 5700 Series
Hard Drives
488GB Western Digital WDC WD50 00AADS-00M2B0 SATA Disk Device (IDE): (Storage)
147GB Western Digital WDC WD15 00HLFS-01G6U1 SATA Disk Device (IDE) Storage)
117GB Corsair Force 3 SSD (IDE): (System C- drive)
59GB Corsair Force 3 SSD (IDE): (other applications)
Optical Drives
TSSTcorp CDDVDW SH-S223C ATA Device
HL-DT-ST DVDRAM GH22NS50 ATA Device
Audio
AMD High Definition Audio Device

I want to convert my system to a good gaming PC. Please advise as to which Graphic card is the most suitable one.

 

[ASHISH65]

HD 7870 OR GTX 660

 

[drkarasheed]

Any idea ?
What difference it makes with DDR3 and DDr5. DDR3 seems to be less costly, but with more RAM, whereas DDR is costly for lesser RAM. But is it much more efficient.

 

[ASHISH65]

Gpu with ddr5 is much faster than ddr3.1gb vram is enough for upto 1600*900 and 2gb for above.