Rob, You should be able to get some pretty good deals on P4s 3.6 or 3.8 Ghz processors.. There will be some good deals on dual cores too, but make sure that your motherboard and bios will support the dual core.. By the end of the year Intel and AMD will be pushing Quad cores, and duals will be in the bargan bins.. Mine is a P4 with HyperThreading (HT) running at 3.4 and the CPU usage runs in the 10 to 20% with VAC and MixW running...
73, Dudley WA5QPZ At 06:32 PM 9/23/2007, Rob Dennison wrote: >Hi to Tim, Ken and Ed, > >Many thanks to all of you for responding. Clearly the Celeron is on its >way to the junk box. > >Back before I bought a box especially for the SDR1K to be, I cruised the >Website looking for advice on what processor to buy, the site only said >greater than 3Ghz. If the tasks are well suited to dual processing, a >1.6Ghz dual core maybe just makes 3Ghz total. However, even if PowerSDR >is locked into one core, the sig processing only gets 1.6Ghz max. > >Reading the three emails I see one neutral on replacement type, one in >favor of a dual core and one in favor of a Pentium P4. So, given a >socket 775, what's "best" Celeron replacement? I'm thinking best price >vs. performance? > >Thanks in advance, > >Rob ;o)~ >AB7CF > >Ps. Man I remember when it was great fun creating flight control systems >for missiles using 10Mhz processors and DARPA spent a bucket creating a >25Mhz processor... > > > > > > > >On Sun, 23 Sep 2007 14:02:17 -0500 "Ed Toal" <[EMAIL PROTECTED]> writes: > > > > Hi Rob, > > > > I started using my 2.4ghz Celeron machine to get my SDR1K with an > > FA-66 > > running and had similar results. In my case the CPU usage was > > between > > 40 and 60%. When I moved the radio to my station machine, a dual > > core > > Athalon at 2.1ghz the CPU usage dropped to 10 to 20% and the audio > > results were much better. > > > > So then I dropped a 3.0ghz P4 in place of Celeron and put the radio > > back > > on that machine. The CPU usage was much better and no audio > > problems. > > As I remember, the CPU usage was in the 30% range. The CPU was > > about > > $80 at Newegg.com. > > > > That proved to me that it was more than advertised speed, the P4 is > > a > > tad quicker but doing things much more efficiently. > > > > No more CELERONS in this household! > > > > The FA-66 here runs at 192khz with buffer size set at minimum and > > WDM > > and ASIO set for smaller. > > > > Yes, you will see a spectrum display bulge below the tuned > > frequency, > > but it won't bother you. As well, the whole display makes a rise > > and > > fall out from the center. Again, this won't affect anything. It > > seems > > like this could be compensated for by software, but I suspect it > > really > > isn't worth the time and effort to do so. > > > > Ed N9MW > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Rob Dennison > > Sent: Sunday, September 23, 2007 11:50 AM > > To: [email protected] > > Subject: [Flexradio] Up and Running > > > > Hi All, > > > > Have my SDR1K up and running. First contact was CE3/VE7SV. Heavy > > lifting is over. With a plan jane installation using an FA-66 (no > > special RFI or common mode treatments) everything is working very > > well. > > Love the radio... better than dared I imagine. > > > > So now I'm into fine tuning with a few questions: > > > > 1. I'm using an XP Pro box with a 3.46 Ghz Celeron D socket 775 and > > 1 > > Gig of Ram. Running PowerSDR 1.10.2 and DXLabs only. > > > > With a 192khz sampling rate I'm experiencing dropouts (even when > > running > > stand alone.) Running PowerSDR v1.10.2 stand alone and using a > > 192khz > > sampling rate CPU usage averages about 35%. Dropouts occur often and > > can > > be forced by dragging the powerSDR window. When running with DXLabs > > they > > are frequent (enough to interfere with CW reception at about 22 wpm > > and > > to interfere with CWX auto CW transmission in the same speed > > range.) > > CPU > > utilization still runs about 35% with peaks above 75 %. Dragging > > any > > window will cause serious drop outs. > > > > Using 96Khz sampling, CPU utilization drops to ~25% with very few > > if > > any > > dropouts stand alone. There are dropouts with DXLabs and > > utilization > > occasionally bouncing up to 31% with occasional excursions into the > > 70% > > range. Dragging a window moves utilization right up to 100%. > > > > I'm currently using the 96Khz sampling rate. What to do? Buy a > > dual > > core? Pour on the memory? Both? > > > > 2. I calibrated everything which was certainly necessary. > > > > Am a little uncertain about the Level CAL results. I used a HP > > 8601A > > set > > to -50dbm. When I entered -50 in the Level (dbm) control the > > results > > were clearly not right (a noise level at -55dbm.) When I entered > > -100 > > in > > the Level (dbm) control the results seem "reasonable?" With the > > generator connected the display shows -50 dbm right smack on. With > > the > > antenna connected the noise level is about -110dbm and S5. (The > > noise > > level is very high in my neighborhood, sigh...) With a dummy load > > connected right to the box the noise level is about -130dbm and S2. > > > > > > Is this about right? > > > > 3. Mostly out of curiosity, when using the panadapter, there's > > always > > big amplitude bulge about 10Khz below the center frequency? > > > > I assume it's some sort of processing artifact? > > > > Other then these relatively small issues everything seems going > > fine. > > Congratulations on producing a marvelous radio... > > > > Rob > > AB7CF > > > > > > > > _______________________________________________ > > FlexRadio mailing list > > [email protected] > > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > > Archive Link: > > http://www.mail-archive.com/flexradio%40flex-radio.biz/ > > FlexRadio Knowledge Base: http://kb.flex-radio.com/ > > FlexRadio Homepage: http://www.flex-radio.com/ > > > > > > > > > > >_______________________________________________ >FlexRadio mailing list >[email protected] >http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz >Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ >FlexRadio Knowledge Base: http://kb.flex-radio.com/ >FlexRadio Homepage: http://www.flex-radio.com/ -------------- next part -------------- An HTML attachment was scrubbed... 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