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Non-Tech : Quote.com QCharts -- Ignore unavailable to you. Want to Upgrade?

To: Esteban who wrote (2213)	5/13/1999 9:00:00 PM
From: Dan Clark	Read Replies (2) \| Respond to of 17977

Esteban, a analog 28.8 modem theoretically runs at 2,880 bytes per second. Actually throughput is probably half that - about 1,400 bytes per second. So that's fine for 250 bytes per second. I think when you first start QCharts, there will be a spike in data volume as it loads up the charts and quote sheets with data. That is where you will probably notice a difference with a much faster modem, ISDN, DSL or cable modem. But I think that only lasts for a minute or so. After that, it should be less of an issue. CPU speed will probably have an effect, but graphics speed will probably have a major effect also. You are pushing a log of graphical images around on the screen. Memory, I'm not sure of. In general, the more memory, the better. WinNT is a memory hog. Win98 also likes memory. You will need at least 64Mb for WinNT and 32Mb for Win98. Double that for reasonable performance. Currently I use WinNT on a dual-pentium 400 with 256Mb of memory. On the other hand, my kitchen PC is a pentium 120 with 80Mb of memory. QCharts runs very nicely there also. What is your OS? Regards, Dan.

To: Esteban who wrote (2213)	5/13/1999 9:02:00 PM
From: Jon Tara	Read Replies (1) \| Respond to of 17977

Esteban: at 28,800 modem is 28,800 BITS per second. Because of start/stop bits, figure 10 bits/byte, so it's 2880 BYTES/second. Sounds like plenty of speed for monitoring 120 symbols. Now, multiply that by 50, if you want to monitor all of NASDAQ. :) You'd need 12,500 bytes, second, or 100,000 bits/second. (I only multiplied by 8, because I assumed one would need a cable modem or ISDN connection...) Of course, with QFeed, there is less of a reason for wanting to monitor all of NASDAQ, because they seem to provide excellent filtering mechanisms on the server. That is, it looks like you can have the server watch for interesting stuff for you, rather than having to pull all the data down to your PC to have it do filtering.