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Is the R9 280X "symmetric"?

B

bergami

Member
Awhile ago, I saw a topic in this forum about the 660 TI not being "symmetric" I think this was the therm, it wasn't "symmetric" because it had 192-bit and 2GB, someone said that it had 2 slots of 512MB and a slot of 1GB. So some VGAs had a "memory wall" using only 1500MB instead of 2GB.

This scared me a lot.

So, I am willing to buy a new VGA, I am between 770 and 280X.
I am, most likely, getting 280X because it's 3GB and 384-bit but the question is:

Is the R9 280X "symmetric"? Does it really have 3GB and no "wall memory"?

My specs:

3570k @4.0
GA-Z77X-UD5H
4x4 1600Mhz
6870
Crucial M4 120
Seasonic S12II 620

Thank you!
 
Yes, it is symmetric. The bus scales perfectly with the 3gb. On an unsymmetrical card the final GB or whatever is a fair bit slower.
 
Only Nvidia does the "asymmetrical" memory buses, IIRc, allowing them to do stuff like put 2 GB of memory with a 192 bit memory bus. AMD does not use technology like that, so all their graphics cards are "symmetrical" when it comes to memory.
 
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