Please recommend a desktop system for me, a programmer, for < $1k
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From: John Doe on 13 Aug 2010 12:29 RayLopez99 <raylopez88(a)gmail.com> wrote: > I decided to go buy the lowest end Dell Precision T1500 Yup yup. Something like that, apparently expandable, is probably a good recommendation for someone who wants to start building a personal computer. There is a bad comment about the power supply, but probably makes no difference for adding an SSD drive. http://www.dell.com/us/en/business/desktops/precision-t1500/pd.aspx?refid=precision-t1500&cs=04&s=bsd Good luck and have fun.
From: RayLopez99 on 13 Aug 2010 18:49 On Aug 14, 12:26 am, Paul <nos...(a)needed.com> wrote: > Have you done any analysis of the effects of the "profile" being used > with your ADSL modem ? The "profile" is a cap inserted at the ISP end, > reducing the data rate to a level where there are no CRC errors. > > Tools like DMT, on select modems, can tell you the error margin > or signal to noise ratio. That predicts how much bandwidth > can safely be extracted from the line. > > The "profile" or maximum bandwidth setting, has to be such that > there is some noise margin left, so that there won't be excessive > errors. A slow connection *might* be caused, by a too-aggressive > profile. > > DMT reads out the information inside the modem. There are multiple > downloadable versions of DMT, each of which supports a different > set of modems. DMT reads out the statistics (the "bins" used by ADSL), > and displays the result. > > http://www.dslreports.com/r0/download/1300227~83b958fe55e96961420237b... > > If you collect a DMT result, or a number of them, and forward them > to your ISP, they can adjust the profile to suit the situation. > > http://www.dslreports.com/forum/r20370982-Noise-margin > > I'm on a 500KB/sec service, and I'm only getting 300KB/sec, and > that is the "cap" they've set in the initial profile. I have > to complain to the ISP, to get that raised, something I haven't > wasted time on yet. Whether it can be raised, depends on SNR. > My previous ISP had the line running at 500KB/sec, but the > next one selected ~300KB/sec to start with. > > HTH, > Paul Wow, good stuff here Paul. I've bookmarked this for future reference. What I can say is this: here in GR they have noise of the digital variety, meaning your signal gets dropped completely for 30 second to 180 seconds--absolutely nothing goes through SAVE *sometimes* Skype (go figure? How is that possible? The only thing I can think of is that Skype uses some sort of Spread Spectrum error correction algorithm so that even the slightest connection will allow you to make a spotty Skype call). Then, after the digital noise abates, you get a decent download speed of SEE BELOW* and from BroadBand DSL Reports **. Only slightly worse than my USA connection in DC, in a house that had poor telephone wiring. That is, not too bad for my purposes, since I don't do much online high-def media streaming. The generic SpeedTouch ADSL modem + router I use has a hardware firewall, and I think when I set it up it was set to "block ads"--so often the ads will not appear in a web page. I have a sneaky suspicion (though I cannot prove it) that sometimes, in ad-heavy sites like Marketwatch, if you block ads the page 'takes forever' (i.e., a long time) to load up, since I think the behind-the-scenes code waits until all ads are loaded, or, after a long time, will allow the page to be loaded without the ads. Hence the long load times for advertisement and graphics-heavy sites like Yahoo or Marketwatch. But I don't go there often, so it's not a big deal. The big deal for me is the white noise I describe above--very annoying. Any suggestions welcome. These developing countries like Mexico and Greece (been to both) seem to have this problem of white noise a lot. Ditto Thailand when I visited. The excuse given by a support person here in Greece, probably bogus, is that wildfires severed certain fiber optic lines, but that's a lame excuse IMO. Another reason might be they are ramping up their infrastructure, and have too many subscribers and not enough hardware. 5 years ago, when they first started rolling out DSL here in Athens on a volume basis, it was not this bad--I used to get, with the same setup, about 50% to 100% more throughput and I don't remember any white noise problems. A small possibility, as I note I was the only GR user who has "home" prefix in the domain name below at ** (i.e., home.otenet.gr), is that I am saddled with some crippled version of DSL, even though I specifically asked the salesperson to set me up with the highest DSL (and I'm paying for the highest). Would not surprise me, incompetent as they are here. RL *Speedtest.net: Download Speed: 1240 kbps (155 KB/sec transfer rate) Upload Speed: 78 kbps (9.8 KB/sec transfer rate) 6/25/2010 18:30:17 **from Broadband DSL reports that Paul recommended: I am last below at 505/66 but a few others also have these numbers Speed Dwn/up Claimed ISP & Speed User Location Test Day Hour (EST) Company & Domain 3.3m/353 OTENet anon @ ATHENS (flash speedtest) 9th 12:33 PM OTENet otenet.gr 2.1m/519 OTENet anon California, USA 4th 04:59 PM OTENet home.otenet.gr 1.8m/508 OTENet anon (flash speedtest) 26th 02:07 PM OTENet otenet.gr 1.5m/576 OTENet anon (flash speedtest) 8th 03:16 PM OTENet otenet.gr 1.4m/266 OTENet anon @ ath (flash speedtest) 31st 11:28 AM OTENet otenet.gr 1.4m/236 OTENet anon (flash speedtest) 30th 12:42 PM OTENet otenet.gr 1.1m/194 OTENet anon (flash speedtest) 16th 12:48 PM OTENet otenet.gr 702/120 OTENet anon @ rafina (flash speedtest) 14th 03:01 PM OTENet otenet.gr 635/43 OTENet anon (flash speedtest) 26th 02:41 PM OTENet otenet.gr 505/66 OTENet anon @ Athens California, USA 13th 06:39 PM OTENet home.otenet.gr
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