opinions: A8V-E vs. A8N-SLI

  • Thread starter Thread starter H.W. Stockman
  • Start date Start date
AMD is trying to promote an Optimising for AMD style following as per Intels
attempts to get everyone to dig deeper into their stuff (HT, Itanium, SSE,
etc. ect.).

Perhaps consider dropping them a line or have a look at their web site.

HTH.


H.W. Stockman said:
Paul said:
Thanks!

The time taken in screen draws is actually quite small -- less than the
resolution of the timer (if I eliminate the screen redraws, there is no
difference in the time for 2048 steps, to one second). Your system is ~1.13
times as fast as mine for this benchmark. Que sera, sera (apologies to the
French and the "Barefoot Contessa").
Click to expand...
[...]
Perhaps there are some clever optimizations out there.
Click to expand...


I just got a 15% improvement, from an optimization that wasn't too
clever -
and involved no coding!!

I noticed that the 2T setting in the bios was on "auto". I just changed
it
to "disable" and got the 15% improvement in my application, and about 18%
in
sandra 2005 stream (now ~6000 MB/s). I guess this should have been a
"duh",
but I somehow thought the BIOS would see that there were only two DDR
modules, and would pick the faster 2T setting.

I hope there are no down sides to disabling 2T -- like having the computer
burst into flames, a fall in the Dow-Jones, an earthquake in China, etc.
Click to expand...
 
"H.W. said:
Paul said:
Thanks!

The time taken in screen draws is actually quite small -- less than the
resolution of the timer (if I eliminate the screen redraws, there is no
difference in the time for 2048 steps, to one second). Your system is ~1.13
times as fast as mine for this benchmark. Que sera, sera (apologies to the
French and the "Barefoot Contessa").
Click to expand...
[...]
Perhaps there are some clever optimizations out there.
Click to expand...


I just got a 15% improvement, from an optimization that wasn't too clever -
and involved no coding!!

I noticed that the 2T setting in the bios was on "auto". I just changed it
to "disable" and got the 15% improvement in my application, and about 18% in
sandra 2005 stream (now ~6000 MB/s). I guess this should have been a "duh",
but I somehow thought the BIOS would see that there were only two DDR
modules, and would pick the faster 2T setting.

I hope there are no down sides to disabling 2T -- like having the computer
burst into flames, a fall in the Dow-Jones, an earthquake in China, etc.
Click to expand...

Purely for its amusement value, take a look at this review. It is
a review of the new Tyan dual Opteron board, with two x16 PCI-Express
video card slots. Using NUMA on the two Opterons, and placing two
registered DDR sticks on each processor (so both processors are
running dual channel), one processor gets to fetch data from both
memory arrays. The result - a Sandra Memory bench of 11562 MB/sec :-)
And it is not even overclocked.

(About 2/3rds of the way down the page.)
http://www.gamepc.com/labs/print_content.asp?id=thunderk8we

Paul
 
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