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Old 04-11-06, 09:39 AM   #1
alex31
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Join Date: Dec 2002
Posts: 47
Default 87.56 : thanks for this big step forward stability and performance

This release has solved all of the big problems we add with previous 81xx drivers :

hi res t221 ibm screen : 81xx was unable to start, with 76xx we had to find suitable modelines with difficulties, but with 87xx the driver get correctly the edid and we just need to use the fancy Option "ModeValidation" "NoMaxPClkCheck" to be able to drive this screen.

stability problem on xeon 64 bits platform : our app (opengl, fbo, shaders) randomly hangs the X server (X take 100% of cpu, and just killing X and relaunching is not sufficient, only issue was to reboot), until now our app is stable with 87xx.

fluidity problems problem on xeon 64 bits platform : every 10-20 seconds the app was hanging during a second, this problem has gone with 87xx

performance on xeon 64 bits platform : our app was two time slower on a 3ghz bi xeon64 than with a low cost amd64 3800 (bi core), now with 87xx performance on xeon is nearly as good as on amd proc.

There is still some small problems : character rendering is not as fast as that we have on ati card (large amount of text scrolling in a console is slow), and on the ibm screen whe have some tearing at the border between what is drawn from dvi0 and what is drawn from dvi1, but we can live with that minors problems !

Thanks again
Alexandre
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