msi GTX 650 performance trouble!

Lefteris Fousteris

Distinguished
Aug 27, 2013
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I upgraded to an msi GTX 650 Overclock Edition and I get lower Performance than my old one (Sapphire HD 7770 Overclock Edition)

My specs are :
Intel Core i3 3220 (3,30GHz)
msi GTX 650 Overclock Edition
Corsair XMS3 8GB 1600MHz
GIGABYTE H61M - DS2
SanDisk 64GB SSD
Western Digital 500GB HDD
INTENSO 750GB HDD
500W Multirama PSU

!!! PLEASE HELP !!!

[EDIT] The one I bought was broken so they gave me a new one and I get better performance than HD 7770...