MrK6
Diamond Member
- Aug 9, 2004
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Originally posted by: gregor7777
I'm still trying to wrap my head around the fact that a 128-bit card is consistently beating the 256-bit 4830 in benchmarks, even given the higher clocks. I haven't been following the video card releases lately, but has memory bandwidth become less of an issue than it used to be?
The bandwidth isn't that much different: http://www.gpureview.com/show_...hp?card1=612&card2=586 (57.6GB/s vs. 51.2GB/s) however the GPU on the 4770 is much more powerful, so it seems to more than make up the performance deficit created by the lower memory bandwidth. At stock clocks for both cards, I believe you'll see the HD 4830 might close the gap at higher resolutions which will be more RAM-bandwidth dependent. All in all though, ATI just went about a different (and cheaper) way of creating similar bandwidth.