I am stuck between the two. 7750 is faster they say but R7 has DDR5. Also Which one is better option to R7 250 PSU? Don't give advice to change the PSU since I don't have the budget.
Video Card:Asus Radeon HD 7750 1GB Video Card ($103.98 @ SuperBiiz) Total: $103.98 (Prices include shipping, taxes, and discounts when available.) (Generated by PCPartPicker 2013-12-22 12:42 EST-0500)
I know but currently there is only the DDR3 with 2GB version. Also AMD site keeps saying that minimum PSU for both is 400W but users say they want to over guarantee their products with high PSU requirements.