i will face bottleneck with that?

mohyasdgold

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Nov 27, 2013
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i will go to buy GPU
Gigabyte R7 250 OC 2GB GDDR3
OR
Gigabyte GeForce GT 640 OC 2GB GDDR3

i will face bottleneck and how much?
CPU is:intel pentium E5700
Mother:Gigabyte G41mT-S2P
RAM:6 GB
 
There's always going to be some component that's a bottleneck to some degree.

DDR3 cards are extremely slow compared to the same card with DDR5 so I wouldn't go with either of those if you plan on playing games. Both are good choices for your computer, just pay the extra $10 and get the DDR5 version.
 

mohyasdgold

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Nov 27, 2013
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How and my mother just able to have DDR3?and there is no DDR5 for them