Trying to buy r9 280x graphics card and have a question.

merle van osdol
merle van osdol
Joined: 1 Mar 05
Posts: 513
Credit: 60724446
RAC: 0
Topic 198209

trying to buy r9 280x graphics card and have a question.

One card says 256bit the other says 384bit. Does this refer to the data transfer rate within the card or to a transfer rate to the motherboard? If it's just within the card I don't have to worry about compatibility to my MoBo.
Thanks

merle

What is freedom of expression? Without the freedom to offend, it ceases to exist.

— Salman Rushdie

Sasa Jovicic
Sasa Jovicic
Joined: 17 Feb 09
Posts: 75
Credit: 76784864
RAC: 49203

Trying to buy r9 280x graphics card and have a question.

The 384-bit is much, much faster.

merle van osdol
merle van osdol
Joined: 1 Mar 05
Posts: 513
Credit: 60724446
RAC: 0

RE: The 384-bit is much,

Quote:
The 384-bit is much, much faster.


Thanks but do I need to worry about compatibility to MoBo?
I have an older r9 280x vapor-x that I bought last year and I assume it's something less than 384-bit.

merle

What is freedom of expression? Without the freedom to offend, it ceases to exist.

— Salman Rushdie

Bill592
Bill592
Joined: 25 Feb 05
Posts: 786
Credit: 70825065
RAC: 0

Howdy Merle, That refers to

Howdy Merle,
That refers to the "Memory Bus Width" of the card.
It won't affect motherboard compatibility.

As far as I know - ALL 280X's are 384bit.

the slower 270X is 256bit.

also - the older 7970 gigahertz edition is basically
the same as the 280X. (they just re-named it )

Bill

merle van osdol
merle van osdol
Joined: 1 Mar 05
Posts: 513
Credit: 60724446
RAC: 0

RE: Howdy Merle, That

Quote:

Howdy Merle,
That refers to the "Memory Bus Width" of the card.
It won't affect motherboard compatibility.

As far as I know - ALL 280X's are 384bit.

the slower 270X is 256bit.

also - the older 7970 gigahertz edition is basically
the same as the 280X. (they just re-named it )

Bill

Thanks Bill

merle

What is freedom of expression? Without the freedom to offend, it ceases to exist.

— Salman Rushdie

ExtraTerrestrial Apes
ExtraTerrestria...
Joined: 10 Nov 04
Posts: 770
Credit: 536500999
RAC: 189238

Bill is right. In addition:

Bill is right. In addition: the 256 bit card you saw may have been a R9 285 based on the Tonga GPU. It's got the smaller memory bus and fewer shaders, so it's in every crunching-related aspect worse than a R9 280X. Even the R9 280 probably performs better at Einstein, as it still has the 384 bit bus.

MrS

Scanning for our furry friends since Jan 2002

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.