"For the 1500, the Intel ICH10 chip is continually the one I find that needs an external hub for proper operation."
Or just use AMD systems :-) -Tim -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Neal Campbell Sent: Wednesday, November 10, 2010 11:41 AM To: Tim N9PUZ Cc: [email protected] Subject: Re: [FlexEdge] New sdr While I don't want to steal any thunder from Gerald's response, the mentioned criteria are really not the ones that delineate a well-working system. I think the amount of L2/L3 cache on the CPU is a major component. 2MB or more is good. Dual core or more for the cpu architecture is good. 2GHz or greater is good for speed. Generally for windows 7 2GB or greater for memory is good (just a normal Win7 configuration guideline). Finally there is the southbridge architecture (the bus that manages I/O to all the peripherals on the various buses like PCIe, PCI, etc. Its my anectodal conclusion that Intel's ICH9 and ICH10 chips are very sensitive to any bus delays. Therefore, if you see high DPCs (driver i/o throughput delays) or IRQ contention (with heavy volume devices, one of which is your firewire card), you will have problems. For the 1500, the Intel ICH10 chip is continually the one I find that needs an external hub for proper operation. If you have an older Intel system with a southbridge configuration with ICH7 or ICH8, you actually have a better chance of success than the ICH9/10 from anectodal observation. The limitation is the ICH7/8 chips are primarily used on Pentium boards which lack L2 cache and multi-core capabilities. I can say however I have talked to many people with a well-tuned Pentium4 configuration that runs like a hot knife thru butter. 73 Neal Campbell Abroham Neal Software www.abrohamnealsoftware.com (540) 645 5394 On Wed, Nov 10, 2010 at 11:29 AM, Tim N9PUZ <[email protected]> wrote: > Gerald, > > I'm curious to know what sort of computer you are using in terms of > RAM, OS, speed, etc. > > 73, > > Tim N9PUZ > > > > On 11/9/2010 3:42 PM, Gerald Youngblood wrote: > >> Ron, >> >> Did you test different audio buffer settings? I ran perfect CW on my >> FLEX-1500 last night with 128 sample buffers. This is probably a >> settings issue. Contact US technical support if you need assistance. >> >> Gerald >> >> >> Gerald Youngblood, K5SDR >> President and CEO >> FlexRadio Systems(TM) >> > > _______________________________________________ > Flexedge mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz > This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is > used for posting topics related to SDR software development and > experimentalist who are using beta versions of the software. > _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software. _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
