Which is better? 2gb of gddr5 128bit or 1gb of gddr5 256bit?

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DaanDieKooHaan

DaanDieKooHaan

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For example the Sapphire Radeon HD 5850 1GB Vapor-X vs MSI R7 260 2GB OC.

I have heard talk that the bus width doesn't even matter anymore, but can't think that that's true?

If you can explain fully please do.

Thanks in advance!
 
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It varies on a case-by-case basis.

Newer GPU architectures tend to be more memory-bandwidth-efficient so you can get about the same performance with half the memory bus width. Nvidia's Maxwell does quite well there.

If you compare the HD5870 against the R7-260X (one notch above the HD5850 and R7-260 you were looking at), you can see they are fairly close in performance, with the R7-260X leading most of the time
http://www.anandtech.com/bench/product/1062?vs=1044
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Titan
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It varies on a case-by-case basis.

Newer GPU architectures tend to be more memory-bandwidth-efficient so you can get about the same performance with half the memory bus width. Nvidia's Maxwell does quite well there.

If you compare the HD5870 against the R7-260X (one notch above the HD5850 and R7-260 you were looking at), you can see they are fairly close in performance, with the R7-260X leading most of the time
http://www.anandtech.com/bench/product/1062?vs=1044
 
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