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newbie posting some questions about a/n vedio cards

catstone

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#1
i am a newbie to this forum,and i am happy to join with u to learn more
here i have several questions about the differences between the specifications of ATI and NVIDIA cards.
1/ frequency. ATI cards run at a much higher frequency,about 100mhz higher than NVIDIA
2/pipeline. ATI cards have more pipelines builtin, about twice as NVIDIA
3/memory bandwidth. ATI cards are more likely to corporate a memory bandwidth of 256bit.From 9800pro on, there are various models. While Nvidia has fewer 256-bandwidth cards. eg. the best-seller of nvidia-family:7600gt
hereby I am puzzled with these differeces. As known,the specifications above are vitally important to tell their performance. But how can these differences results in similar class of performance?
 

KennyT772

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#2
um currently nvids top end has 24pipes and ati 16. but nvid only has 24 shaders where ati has 48. clockspeed doesnt matter a whole lot in todays world. for the record any x1800/x1900 has a 256bit bus where any x1300/x1600 has 128bit. same for nvid really 8 and 9 series have 256 with 3 and 6 having 128.