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To: Bilow who wrote (41977)	5/10/2000 6:12:00 PM
From: Don Green	Read Replies (1) \| Respond to of 93625

Sony sets date for PlayStation2 debut By Ian Fried Staff Writer, CNET News.com May 10, 2000, 2:05 p.m. PT URL: news.cnet.com update Sony said today that its PlayStation2 will hit U.S. stores Oct. 26 with a suggested price tag of $299. The U.S. launch of the PlayStation2 should help rekindle the console wars, as the new machine competes head-to-head against Sega's Dreamcast. Nintendo's Dolphin and Microsoft's X-Box are expected in 2001. Sony plans to crank out 1 million PlayStation2 units for the launch, with 2 million more units to ship through March 31, 2001. The machine will work, as shipped, to play DVD movies and audio CDs. Sony announced the launch in Los Angeles in advance of the Electronic Entertainment Expo (E3) trade show there. As expected, the PlayStation2 does not include a built-in hard drive but can connect to one through the console's USB (universal serial bus) and "iLink" ports. The PlayStation2 will not ship with a built-in modem, as many had expected, but it will contain an expansion bay designed to handle the modem. The modems will be sold separately and will not be available at the launch. A company representative said they should be available shortly thereafter, however. "The overwhelming success of the product launch proves that the market is ready for PlayStation2, as we chart a path toward the future of networked digital entertainment," Sony Computer Entertainment chief executive Ken Kutaragi said in a statement.

To: Bilow who wrote (41977)	5/10/2000 7:44:00 PM
From: jim kelley	Read Replies (2) \| Respond to of 93625

Bilow, You are wrong! You have not dealt with my original post. So your post constitutes a misleading reply not a rebuttal. In fact, your response is way off base. My calculations were for the use of DDR in a "PC motherboard" with 128 MB. You are responding with a 32 MB example using DDR SGRAM in a graphics application. It is interesting to note that your calculation yield a point power consumption of 4 X (300 mA X 2.5 V) = 3 Watts for a 32 MB system. A memory with 1/4 the capacity of the one in my example. However, the graphics chip is not suitable for the PC motherboard application. I chose instead the Samsung 16M X 8 chip. By the way, I specified the IDD4r and IDD4w currents from the Samsung specifications. Are you calling those specifications into question? If so why? A simple point calculation of the power consumption for the Samsung 16MX8 chip during a read operation (with Vdd at 2.5 volts nominal) yields 375 mW per 16MX8 chip. It takes 16 of these chips to obtain an 128 bit data bus. That is it takes 6 watts to power the DDR memory. Rdram requires 1.3 watts per chip during the read. Only one chip need be active at a time because each is 16 bits. Now the RIMM situation can get more complicated because RDRAM has a nap mode, a standby mode and as well as an active mode. For 128 MB RIMM doing a read operation we get: NAP MODE---------1.4 Watts Standby mode-------2.6 Active Mode---------4.1 But in all of these cases the power consumption is still below that of an equivalent DDR PC Memory. Now perhaps you have some other example to illustrate your points but currently the ball is in your court. The use of a heat spreader is a good idea since the power consumption of the RDRAM can vary a lot as my example shows. My calculations are approximate. Yours are non existent. :)