DPete27 wrote:Not to throw a monkey wrench into everything, but the size of the memory pipeline also affects performance in some instances. That's why I like AMD cards right now, they may not be quite as power efficient, but the 7850's and up have 256-bit or larger memory interface which allows them to deal with AA better, and they have much better GPU-compute performance than Kepler for what it's worth.
DPete27 wrote:Not to throw a monkey wrench into everything, but the size of the memory pipeline also affects performance in some instances.
Airmantharp wrote:Just remember that Nvidia made their memory pipeline a little 'wider' with Kepler
DPete27 wrote:Airmantharp wrote:Just remember that Nvidia made their memory pipeline a little 'wider' with Kepler
Can you explain this statement a little more? Even as low as the GTX 460/560 had a 256-bit interface. Now with Kepler you don't go above 192-bit until you get to the GTX 670. Maybe I don't understand the relationship between available VRAM and the memory bus width as well as I thought.
My understanding is: the wider the memory bus, the faster data can be transferred to and from the VRAM. Available VRAM is how much info you can store at a time. Seems to me that if Kepler is so much more memory efficient, then it makes sense that you can get away with having less available VRAM. But you should still need enough "lanes" to transfer data into and out of the VRAM fast enough for the application to use it; otherwise you still end up with a bottleneck. The article I linked shows that bottleneck.
Airmantharp wrote:Also, you're posting on a legitimate review site; please reference one instead of an advertising agency. Using Tom's does not add to one's credibility.
axeman wrote:graphics memory speeds continually go up as well. some newer cards have narrower memory bus, but not necessarily less memory bandwidth.
Airmantharp wrote:On the usefulness of AA- I haven't seen a situation where you can really get away with running a current game at it's highest settings and with 4xMSAA while keeping frame-times anywhere near 16.7ms (for smooth 60FPS) in the 99th percentile.
Users browsing this forum: No registered users and 3 guests