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     ATI's real fake SDK DX10
      Posted on 21/04/2006 at 11:56 by Damien
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    Now this would be great if this SDK was really a link with DirectX 10. In fact this is a 100% DirectX 9 SDK released one month ago. We even used it for our article on R2VB. This is a promising DirectX 9 technique that makes possible to outline the absence of vertex texturing in the Radeon X1000 and still provide a wider range of possibilities. In this article and after analysing the different demonstrations, we came to the conclusion that some of these rendering techniques could be a solution for current Direct X9 GPU to deal with some of DirectX 10 rendering techniques.

    ATI's marketing service probably had the same thought…but got rid of half of the words… By acting like that ATI, let us think that these are DirectX 10 techniques and hopes to mislead the careless reader. For now, ATI doesn't have a practical lead compared to NVIDIA for DirectX 10 API and only Microsoft put at the developers' disposal beta DirectX 10 content via February and April's DirectX SDK.



     Seagate Barracuda 7200.10
      Posted on 21/04/2006 at 09:55 by Marc - source: Forum SR
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    Seagate released several pdf here and here introducing the next generation of 3.5" PATA/SATA hard drives. The 7200.10 are the first discs of this type that use perpendicular recording. They will come out in 200, 250, 320, 400, 500 and ... 750 GB capacities, a new record. Several versions will be available Ultra ATA/100 or Serial ATA. The 750, 500, 400 and 320 GB versions include 16 MB of cache and the 200 GB, 8 MB. For the 250GB, we will have the choice between 8 or 16 MB. Here are the drives configurations:

    - 750 GB : 4 platters, 8 heads, 720g
    - 500 GB: 3 platters, 6 heads, 720g
    - 400 GB: 3 platters, 5 heads, 635g
    - 320 GB: 2 platters, 4 heads, 635g
    - 250 GB: 2 platters, 3 heads, 580g
    - 200 GB: 2 platters, 3 heads, 580g

    We added the weight to show you some incoherencies on Seagate's datasheet. On this page the 500 GB version's weight is reduced to 635g and a 300 GB Ultra ATA/100 (at 580g) shows up. If these configurations are correct, the maximum is 93.75 GB / face for the 750 GB. For the others the capacity oscillates between 80 and 83.3 GB / face and falls to 66.6 GB for the 200 GB. We remind you that the 7200.9 density is also variable: 62.5 GB per face for the 250 GB, 80 GB for the 160 GB for example.

    From the performance point of view, Seagate doesn't speak of access time, but say that the maximum sustained sequential transfer rate reaches 78 MB /s. FYI, we measured maximum sustained sequential transfer rate between 67 MB /s (Seagate) and 75 MB /s (Samsung) with 125 GB / platters density.

    Besides weight, other elements sound weird. The noise level in rotation is of 25 dBA for the 200 to 400 GB versions and 27 dBA over 400 GB: but in theory the 400 GB version noise level should be just like the 500 GB at 27 dBA. This is better than the 7200.9 that were announced at 28 dBA for 3 & 4 platters versions.

    The non operating shock capacity in stand by is logically at 320 GB: up until this capacity it is of 350 Gs and 300 Gs beyond. This time, the 7200.9 were better. Seagate announced that they supported 350G even in 3 & 4 platters versions. For operating shocks, the 7200.10 are better because announced at 68 GS as compared to 63 GS for the 7200.9.

    The Ultra ATA 750 GB is announced to be available in pre-ordersin Japan in a few days from certain shops at approximately 460€ (before taxes). Now, we still have to wait and see how long it will take for the worldwide availability. For the previous generations 3 to 6 months were required.


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