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RE: [Discuss-gnuradio] Progress on Sheeva -- actually got a half-way fun
RE: [Discuss-gnuradio] Progress on Sheeva -- actually got a half-way functional flow-graph working
Fri, 9 Apr 2010 23:19:50 +0000
I did the same sort of thing comparing the 2 channel 1Gs/s roach boards and the
4 channel 1.5Gs/s PX15500's when every one was ranting about the roach boards
and how cheap they where. It worked out a persample dollar of a 3rd less or so
for the more expensive one.
What it really comes down to is, what do you really need, and will you ever
have any need of the capabilities. And more importantly do you have the could
hard cash to get the more "expensive one"
From: address@hidden address@hidden on behalf of Marcus D. Leech address@hidden
Sent: Friday, 9 April 2010 10:39 PM
To: Philip Balister; GNURadio Discussion List
Subject: Re: [Discuss-gnuradio] Progress on Sheeva -- actually got a half-way
functional flow-graph working
> On 04/08/2010 10:30 PM, Marcus D. Leech wrote:
>> It can only handle two channels, and it takes 78% of the CPU while doing
>> it, but it does work!
> How about calculating a $ per sample number?
Hmmm, let's see.
The Sheeva Plug was $99.00
The USB Audio subsystem I had to buy for it was $79.00
So, $178.00 divided by 96000 samples/sec
Let's see how that scales using a USRP1 and a "mildly pimped out" PC
USRP1 is $700
PC is probably another $700
So, $1400.00 divided by 8megasamples/sec
That's roughly 0.02cents/sample/sec
The USRP1 + PC is roughly an order-of-magnitude better value, when
looked at in that way.
Shirleys Bay Radio Astronomy Consortium
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