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1080i performance boost?!?!?!?

Forum Graphic & Displays : ATI - 1080i performance boost?!?!?!?

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pr0phet129   11-08-2009 at 09:01:33 AM

Hi guys,

I seem to get a mssive performance boost in game, and on 3d mark with a 1080i tv plugged in. Its native resolution is 1366x768 but CCC wont let me run it at native, so I have to run it at 1920x1080 and I get average 8 fps more than on my 1680x1050. I get the same result when I put my tv onto my flatmates PC (we both have ati gpu's, 5770 and 5870), or use my other 1080i monitor on my pc.

Has anyone come across this before? or anyone have any suggestions why the **** performance goes up with 1080i?

Cheers

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Bronze Graphics badge mousemonkey   11-08-2009 at 09:14:56 AM
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If the native res is 13 x 7 then it won't be running at 19 x 10 but at 12 x7 which is like 1080i being scaled down to 720i in that it looks very similar.

------------------------------ [:mousemonkey:1] http://img29.imageshack.us/img29/5041/vr2009champ.jpg
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pr0phet129   11-08-2009 at 09:30:42 AM
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its actually being upscaled to 1920x1080, this is the thing, alot of new 1080 tv's actually have a native resalution of 1366x768, but are upscaled to 1920x1080

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pr0phet129   11-08-2009 at 09:38:39 AM
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sorry, the image is being scaled to fit 1366x768, it displays 1080, but at 768!!i had the option of running 1366x768 on my CCC with my 4870, but with my 5770 i dont have that option. The resolution is definitely different!

TV firmware just makes 1080i, 'fit' to a 1366x768,

And from that i get a massive performance boost?

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Bronze Graphics badge mousemonkey   11-08-2009 at 09:41:51 AM
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Yes, because there are less pixels to push about.

------------------------------ [:mousemonkey:1] http://img29.imageshack.us/img29/5041/vr2009champ.jpg
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