<br><br><div class="gmail_quote">2012/2/11 lkcl luke <span dir="ltr"><<a href="mailto:luke.leighton@gmail.com">luke.leighton@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<a href="http://www.tensilica.com/uploads/pdf/LX4.pdf" target="_blank">http://www.tensilica.com/uploads/pdf/LX4.pdf</a> - i'm just reading what's<br>
on page 1, in the bottom left-hand corner. um... i'm having a bit of<br>
conceptual difficulty understanding what 100 Giga-MACs is, when<br>
compared to say... the engines you find in a GPU.<br>
<br>
could someone be kind enough to explain it to me, using like...<br>
y'know, words with only a few syllables, and maybe paint some pretty<br>
pictures? i'm trying not to sound flippant but i just can't get my<br>
head round such monstrously-large numbers.<br>
<div class="HOEnZb"><div class="h5"><br>
l.<br>
<br>
_______________________________________________<br>
arm-netbook mailing list <a href="mailto:arm-netbook@lists.phcomp.co.uk">arm-netbook@lists.phcomp.co.uk</a><br>
<a href="http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook" target="_blank">http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook</a><br>
Send large attachments to <a href="mailto:arm-netbook@files.phcomp.co.uk">arm-netbook@files.phcomp.co.uk</a><br>
</div></div></blockquote></div><br><div>Hi,</div><div>According to my very rough estimation 100 Giga-MACs performance is at least equivalent to the performance of AMD Radeon HD 6250 GPU. That is the GPU used in AMD G-Series SoC - the one you have chosen for future EOMA-68 SoCs. (I suggest you have to ask Xtensa about what stays behind "100 Giga-MACs performance" - 1-, 2-, 4- or 8-core configuration?)</div>
<div><br></div><div>How is the comparision done? GFLOPS (<font class="Apple-style-span" face="arial, helvetica, sans-serif">Giga <span class="Apple-style-span" style="font-size:13px;line-height:19px;background-color:rgb(255,255,255)">floating-point operations per second) </span></font>is a theoretical measure used in comparisions between GPUs/CPUs. AMD Radeon HD 6250 GPU has performance of 45 GFLOPS at maximum of 400 MHz. In AMD G-Series SoC the GPU even operates at lower speed: 280 MHz.</div>
<div><br></div><div>Giga-MACs to GFLOPS ratio is 2:1 according to this source: <a href="http://electronicdesign.com/article/communications/DSPs-Deliver-Up-To-10-GHz-Throughput-With-Full-Floating-Point-Math.aspx">http://electronicdesign.com/article/communications/DSPs-Deliver-Up-To-10-GHz-Throughput-With-Full-Floating-Point-Math.aspx</a></div>
<div>AMD graphcis cards specifications: <a href="http://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units#IGP_.28HD_6xxx.29">http://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units#IGP_.28HD_6xxx.29</a></div>
<div><br></div><div>Regards,</div><div><br></div><div>Iliya</div><div><br></div>