Jon Simon van Sharky Extreme heeft een (gelukkig redelijk korte) preview van de Matrox G450 online gemikt. De G450 is een opgevrolijkte G400, geproduceerd op een 0,18 ipv 0,25micron procédé en voorzien van een hogere core clock en sneller DDR geheugen. De geheugenbus is echter versmalt naar 64-bit, waardoor het performance voordeel van DDR SDRAM al weer teniet wordt gedaan:
The G400 uses a 128-bit memory bus connected to 16 or 32MB of SDR memory. With the G450, Matrox decided to use a 64-bit memory bus connected to 32MB of DDR memory. By narrowing the memory bus, Matrox does not have to run as many wires between memory and the G450 processor. This gives Matrox more leeway in board design and lets them use less layers in their PCB, which saves Matrox manufacturing costs. By using DDR memory, Matrox can do this without reducing memory bandwidth. Another advantage of a 64-bit memory bus is better memory granularity. With a 64-bit memory bus, the minimum amount of memory Matrox can use is half that of a card with a 128-bit memory bus. As memory module density increases to the gigabit range, this will turn into a major cost savings. At this time, we do not know whether the G450 will come with SDRAM or SGRAM. Matrox will most likely choose which kind of memory depending on pricing and availability.
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