玩了几天7950GX2，对N卡的SLI技术比较失望

应该是驱动问题吧。在问题没找到的时候，先把功能禁用。

没记错的话，撕裂现象在高分辨率的HDTV里也会出现，
不过原理不同，解决的方法也有区别

下了一个GDC关于SLI的presentation（PDF超过128K无法上传），
其中有讲到这个问题


VSync Enabled

• Throttles frame-rate to monitor refresh

• Enabling triple-buffering does NOT offset enabling vsync:
– If render-rate faster than monitor refresh, Then vsync still gates GPU

• Worse, triple-buffering
– Increases lag
– Consumes (much) more video-memory

Limiting Number of Frames Buffered

• Some apps allow at most one frame buffered
– To reduce lag
– Via event queries
– Don’t lock/read back-buffer: Causes CPU buffer stall

• Disables AFR SLI speed-up
• But SLI is up to ~1.9x faster
– I.e., SLI systems ~1.9x less lag

分卷压缩上传，有兴趣的朋友可以看看
里面还有讲到AFR和AFR下的Latency问题
非常详细。

http://www.atomicmpc.com.au/forums.asp?s=1&c=3&t=2246

That said since writing the piece and after further digging, it appears triple buffering *can* work in SLI mode, but only with AFR. This at least gives us hope that TB in SLI isn't a factor of hardware, but software in the drivers.

我再试试看强制AFR模式

进来学习一下　。。。＃

呵呵，国外的NVIDIA爱好者和A记爱好者争论
不过说实话，比国内的技术含量高很多
http://www.rage3d.com/board/showthread.php?t=33835119&page=16

非常赞同这个观点，

I can't trust most web-sites today for my gaming experience. I read them and each may have some info that may be useful but most of it is canned marketing for the lemmings.

When sites or marketing picks and choses what negatives and positives to use -- you can make any product look good or bad. When you offer all the negatives and positives fairly -- then a gamer can make the right choice that fits their needs.

lz我坦白告诉你
只有游戏帧数跟显示器的当前刷新率一样的话不开垂直同步才会感觉画面有严重撕裂
一般是感觉不到的，但你开了那么高的分辨率会是60帧稳定吗？假如你的显示器是lcd
除非是低分辨率，比如1280x1024，所以说你要不要垂直同步都无所谓了，你要是玩cs开高分辨率也没办法，不过很少有玩cs去开高分辨率的　　！＃＃实在不行你去用A卡吧，也许会让你1000%的满意的