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I found a GTX 275 with 1792MB of RAM on Newegg, it has 448-bit interface. The GTX 285's have 512-bit interface. Is the difference noticeable, and how does it help?
 

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Basically, it goes like this

RAM Speed + Bitwidth = Bandwidth (a little more complex than that, but that's the general idea)

Basically, the 1792MB Version of that card was designed to look impressive, but like the 2GB HD4890, it falls on it face as it does not properly use that much RAM for even the highest resolutions (2650x1600)
 

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Quote:

Originally Posted by heyman View Post
So would a 2 GB 512 bit 285 do a better job of running on high resolutions?
Not really
http://www.tweaktown.com/reviews/272...rd/index7.html

If you look at that review, you'll see that even have 2GB of VRAM, against a stock GTX275, it barely pulls ahead in 2650x1600.
 

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Having >1GB of vram is really only useful if you are going to run SLI or tri-SLI and have at least a 2560x1600 resolution. And even then, it's only sometimes going to matter (on certain games that use exceptionally high-resolution textures like ... you know ... Crysis)

Otherwise you're better off with the standard memory amounts on either a 275 or 285. The extra memory bandwidth does help a little on the 285, as does the 32 ROP's (vs 28 on the 275) ... but all in all the 275 is pretty dang close performance-wise to the 285, and thus it's a much better deal.
 
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