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Master Member
  
加入日期: Feb 2003 您的住址: Pussalia
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NVidia VS ATi
資料來源 :
HERE Here's a wonderful XbitLabs article comparing the X1950XTX against the 7950GX2 at "equal" image quality settings and also at highest quality image settings. XBIT LABS This is one of the best video comparison articles I have seen in a long time! The reason why I said "equal" is because most website hardware reviewers still benchmark Nvidia cards at only the default "Quality" Image settings, which is sub-par to ATI's image quality. ATI's cards do not display the texture shimmering or noise that is very distracting and noticeable (almost as bad as screen tearing!) on Nvidia cards at default settings. So, for high-end card comparisons, it is a logical requirement that we start testing Nvidia cards only at "High Quality" Image settings. The performance penalty can be as great as 30-40% for Nvidia in some games such as Battlefield 2 and UT2004, but not so bad in other games. It actually causes the 7950GX2 to score lower than the X1950XTX in 3DMark06! Nvidia has gotten away with unfair comparisons to ATI's cards for a couple of years, and it is time that we bring light to this, and put an end to this. Now that the G80 and R600 are due to be released shortly, it is probably not going to continue since there is tremendous pressure on Nvidia to implement High Quality Anisostropic Filtering once again, just like with ATI's X1xxx series. The ugly thing is that Nvidia has largely gotten away with it while only a few people noticed this unfair advantage with optimizations over the past year or so. Consequently, many of us suffered texture shimmering/noise. After changing the Nvidia settings to "High Quality" image settings in order to get rid of the horrible shimmering, I noticed that with my 7900GTX I had to lower the settings from TR Supersampling AA down to TR Multisampling AA on many of the newer games at 1920x1200 while on my X1900XTX nearly all of the games were smoothly playable with Quality Adaptive AA without having to lower it to Performance AAA. If you want to see how bad the texture shimming is at default settings on Nvidia cards compared to ATI, here's a link for this Battlefield 2 video clip download: EDIT: http://www.filefactory.com/file/5aeee2/ (after clicking on the above link, scroll down to where you see "download for free with filefactory basic" then click on it.) or you could check out other comparison video clips from Xbitlabs: XBIT LABS Enjoy!
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2006-10-28, 11:53 PM
#1
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Master Member
加入日期: Dec 2001
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它的意思簡單的說:
nVidia 預設值的 AF 效果就是比較差, 因此要多開一兩級的 AF 畫面才能跟 AMD (ATi) 比. 所以硬要畫質相同的話, 多半要把 AF 調高才能夠跟 AMD(ATi) 比. 結果這樣一比下來, 不少遊戲本來是 nVidia 佔上風的, 現在其實蠻多都被 ATi 贏過. 如果有越多的人理解這個 (測試網站更要理解啦) 那應該可以慢慢的讓整個顯示卡界的方向往上提升 ^^ |
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2006-10-29, 12:22 AM
#2
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Master Member
加入日期: Feb 2003 您的住址: Pussalia
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引用:
翻得得好 ...  講到重點 
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2006-10-29, 12:43 AM
#3
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Major Member
 加入日期: Sep 2004
文章: 114
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wow~
自己一直都是用ATI的卡..不知道NV開AF是不是真的有差呢?! 有沒有大大來些圖片看看呢? 總覺得要有真相比較一下哩~
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2006-10-29, 01:26 AM
#4
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Master Member
加入日期: Jan 2004
文章: 1,518
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感謝分享資訊
但恕我直言 這對市佔率的影響應該不會太大 準時上市, 高良率, 高的pure speed performance (至少先求遊戲跑得動再求畫質) 遊戲開發者的最佳化比較重要...這也是NV的成功之道 大多數的人還是先重效能 接下來才會注意畫質 一值以來ATi以品質(AA/AF)見長 ,NV以效能和支援度見長 儘管NV和AMD(ATi)一值在努力同時提升效能和品質 但是 有多少玩家玩game會開AA/AF 勒? 有多少玩家跑benchmark會開AA/AF,會注意畫質好不好呢? 很多人只會注意分數和FPS值 因為"畫面貼圖品質好不好"無法比較 分數可以 比較炫耀 想盡辦法追求高分只是為了對外宣稱說 我家電腦跑xxx超級順的, 3Dmark分數xxx分電腦都不會lag喔 藉此得到他人的欽羨 而會去調driver/工具選項降低貼圖品質讓分數飆到最高點趕快照個相做紀念的人大有人在 畫面好壞,遊戲順不順, 每個人的接受度都不同... 有的人玩game一定要開4xAA/8XAF且FPS要>60不然玩不下去 他家小朋友要夠多才行 XD 鋸齒嚴重得像被狗啃過,畫面模糊的像漿糊 也是有人玩得下去 紋理細節 ? 阿那是什可以吃嗎? 遊戲跑得動就好, FPS值比別人高最重要 看過太多人沒善用自己的顯示卡了....連AA都不知道是什也可以玩得很快樂 這種人在PCDVD可能比較少...但確實存在於這世上而且還不少 真浪費阿 |
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2006-10-29, 01:37 AM
#5
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*停權中*
加入日期: Feb 2004
文章: 255
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問題是Ati的Driver讓人聞之卻步.
玩個遊戲若是常當掉或不穩或衝突...光這點就足以打入冷宮了. 不曉得ATI的DRIVER有沒有改進了. |
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2006-10-29, 01:40 AM
#6
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*停權中*
加入日期: Aug 2001
文章: 1,061
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當初從ATI 9800PRO(用了2年) 跳到7800GT
總覺得畫面怪的(遊戲跟影片) 不到一年就放棄NV，再跳回ATI X1900 ATI的驅動，我玩遊戲都沒問題 倒是NV的FORCEWARE，很多版掛WHQL真的很糟糕 |
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2006-10-29, 02:21 AM
#7
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Master Member
加入日期: Aug 2005
文章: 2,250
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引用:
如果您玩bf2的話那好像有針對a卡做強化 包括最近的2142 小弟是認為如果由遊戲針對a卡或n卡做強化的話(通常看遊戲包裝或是遊戲開頭的logo即可) 使用指定的顯卡通常表現會好很多 a卡有a卡的強項，n卡也有 我也想一次擁有兩陣營的高階卡然後看遊戲換卡玩 可是這樣做的代價實在是太高了...XD |
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2006-10-29, 02:29 AM
#8
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Advance Member
加入日期: Sep 2005
文章: 444
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小弟從6800GT轉戰ASUS X1950PRO，看了本版某個關於GOTHIC3的討論串，看了發文者的圖，就是覺得小弟的X1950PRO似乎比較漂亮，不知是不是就是這個關係？
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2006-10-29, 02:36 AM
#9
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Master Member
加入日期: Dec 2001
文章: 1,747
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如果說, 整體的大環境沒有多少人會在意這點.
那 ATi 應該可以推出比較新版的驅動程式, 也學 nVidia 把次一級的 AF/AA 放進來當作是預設值. 並且宣稱有多少 % 的性能進步. 不過這樣做就是 "向下沉淪" 了. PS: 結果 ATi 沒有這樣做, 讓 nVidia 在這方面佔了小便宜. 現在還被 AMD 併購, 該不會印證了一句話 "劣幣驅逐良幣" |
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2006-10-29, 02:42 AM
#10
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