Comments on: Windows 7 GDI performance: the trade-off http://www.pcpro.co.uk/blogs/2009/05/07/windows-7-gdi-performance-the-big-trade-off/ Blogging in the real world Sun, 22 Nov 2009 02:52:54 +0000 http://wordpress.org/?v=2.8.4 hourly 1 By: Italian Boy http://www.pcpro.co.uk/blogs/2009/05/07/windows-7-gdi-performance-the-big-trade-off/comment-page-1/#comment-59701 Italian Boy Sun, 17 May 2009 16:04:11 +0000 http://www.pcpro.co.uk/blogs/?p=5528#comment-59701 Hi, I think that the reasoning is not much correct. With the new GDI model of WDDM 1.1 there will be a slowdown only when the CPU has to read back from the GPU vram. This case is very rare in normal applications. Why you would read back from video memory? Usually you want only to draw something on the screen. And if you want to elaborate some pixels already displayed on video, usually you leave this task to the GPU itself (and this is what should do WDDM 1.1), because the GPU can work at full speed with its vram. So, I think that if an application, today, works faster with Vista WDDM 1.0 drivers, it is only because the Win7 WDDM1.1 drivers are not mature yet. Or maybe new applications have to use new WDDM1.1 api to take advantage of its GPU accelerated functions. Sorry for my bad english. Hi, I think that the reasoning is not much correct. With the new GDI model of WDDM 1.1 there will be a slowdown only when the CPU has to read back from the GPU vram. This case is very rare in normal applications. Why you would read back from video memory? Usually you want only to draw something on the screen. And if you want to elaborate some pixels already displayed on video, usually you leave this task to the GPU itself (and this is what should do WDDM 1.1), because the GPU can work at full speed with its vram.
So, I think that if an application, today, works faster with Vista WDDM 1.0 drivers, it is only because the Win7 WDDM1.1 drivers are not mature yet. Or maybe new applications have to use new WDDM1.1 api to take advantage of its GPU accelerated functions.
Sorry for my bad english.

]]> By: Darien Graham-Smith http://www.pcpro.co.uk/blogs/2009/05/07/windows-7-gdi-performance-the-big-trade-off/comment-page-1/#comment-58407 Darien Graham-Smith Mon, 11 May 2009 13:05:28 +0000 http://www.pcpro.co.uk/blogs/?p=5528#comment-58407 Yuri: These are the standard PC Pro real world benchmarks, which use Office 2003. I'm afraid we can't distribute them as they're built on commercial code from multiple vendors... but if you're interested you can find more details in the "Real World Benchmarks" section of any PC Pro cover disc. Cheers! Yuri: These are the standard PC Pro real world benchmarks, which use Office 2003. I’m afraid we can’t distribute them as they’re built on commercial code from multiple vendors… but if you’re interested you can find more details in the “Real World Benchmarks” section of any PC Pro cover disc. Cheers!

]]> By: W7: problemas con drivers GDI « Tecnologia, Actualidad,y mucho mas…. http://www.pcpro.co.uk/blogs/2009/05/07/windows-7-gdi-performance-the-big-trade-off/comment-page-1/#comment-57794 W7: problemas con drivers GDI « Tecnologia, Actualidad,y mucho mas…. Fri, 08 May 2009 23:28:06 +0000 http://www.pcpro.co.uk/blogs/?p=5528#comment-57794 [...] PCPro nos llega el resultado de unas pruebas de rendimiento que competen a la nueva versión de Windows [...] [...] PCPro nos llega el resultado de unas pruebas de rendimiento que competen a la nueva versión de Windows [...]

]]> By: Yuri http://www.pcpro.co.uk/blogs/2009/05/07/windows-7-gdi-performance-the-big-trade-off/comment-page-1/#comment-57774 Yuri Fri, 08 May 2009 18:48:30 +0000 http://www.pcpro.co.uk/blogs/?p=5528#comment-57774 Darien, where can I install the benchmark from? Which version of office does it use? Thanks! Darien, where can I install the benchmark from? Which version of office does it use?
Thanks!

]]> By: Alan http://www.pcpro.co.uk/blogs/2009/05/07/windows-7-gdi-performance-the-big-trade-off/comment-page-1/#comment-57740 Alan Fri, 08 May 2009 12:11:58 +0000 http://www.pcpro.co.uk/blogs/?p=5528#comment-57740 Good work Darien, very interesting. Good work Darien, very interesting.

]]> By: TaoistTotty http://www.pcpro.co.uk/blogs/2009/05/07/windows-7-gdi-performance-the-big-trade-off/comment-page-1/#comment-57728 TaoistTotty Fri, 08 May 2009 09:31:39 +0000 http://www.pcpro.co.uk/blogs/?p=5528#comment-57728 This is interesting and it could be the beta drives as muck mentions. Are you planning on testing this with CAD and/or Photoshop etc. as this would be interesting to see and could cause bigger problems)? This is interesting and it could be the beta drives as muck mentions.

Are you planning on testing this with CAD and/or Photoshop etc. as this would be interesting to see and could cause bigger problems)?

]]> By: muck http://www.pcpro.co.uk/blogs/2009/05/07/windows-7-gdi-performance-the-big-trade-off/comment-page-1/#comment-57723 muck Fri, 08 May 2009 08:34:12 +0000 http://www.pcpro.co.uk/blogs/?p=5528#comment-57723 Surely the ATI Win 7 drivers are in beta. I use Nvidia drivers and I know they stick the beta tag to it. Surely the ATI Win 7 drivers are in beta. I use Nvidia drivers and I know they stick the beta tag to it.

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