| Author |
Message |
Guest
|
 Posted:
Mon Feb 21, 2005 7:55 am Post subject:
Fast Adders |
|
|
| Can someone please tell what is the fastest adder for 16-bit integers |
|
| Back to top |
|
 |
Eric Smith
Guest
|
| Posted:
Tue Feb 22, 2005 5:28 am Post subject:
Re: Fast Adders |
|
|
ramkumar.sankar@gmail.com writes:
| Quote: | Can someone please tell what is the fastest adder for 16-bit integers
|
The fastest one that is readily available is probably on of the
new 6xx-series Pentium 4 processors. Though an Athlon 64 may get
you better total system throughput. |
|
| Back to top |
|
|
Anton Ertl
Guest
|
| Posted:
Tue Feb 22, 2005 1:14 pm Post subject:
Re: Fast Adders |
|
|
Eric Smith <eric@brouhaha.com> writes:
| Quote: | ramkumar.sankar@gmail.com writes:
Can someone please tell what is the fastest adder for 16-bit integers
The fastest one that is readily available is probably on of the
new 6xx-series Pentium 4 processors.
|
The Prescott has an add latency of 1 cycle, the Northwood/Gallatin 1/2
cycle. So the fastest one among those would be the 3.46GHz Pentium4EE.
Also, note that the Northwood uses (staggered) 16-bit adders whereas
AFAIK the Prescott does not use that idea.
However, I guess that the OP did not have adders surrounded by an
expensive CPU in mind.
- anton
--
M. Anton Ertl Some things have to be seen to be believed
anton@mips.complang.tuwien.ac.at Most things have to be believed to be seen
http://www.complang.tuwien.ac.at/anton/home.html |
|
| Back to top |
|
|
Stephen Maudsley
Guest
|
| Posted:
Tue Feb 22, 2005 2:19 pm Post subject:
Re: Fast Adders |
|
|
"Anton Ertl" <anton@mips.complang.tuwien.ac.at> wrote in message
news:2005Feb22.091447@mips.complang.tuwien.ac.at...
| Quote: | Eric Smith <eric@brouhaha.com> writes:
ramkumar.sankar@gmail.com writes:
Can someone please tell what is the fastest adder for 16-bit integers
The fastest one that is readily available is probably on of the
new 6xx-series Pentium 4 processors.
The Prescott has an add latency of 1 cycle, the Northwood/Gallatin 1/2
cycle. So the fastest one among those would be the 3.46GHz Pentium4EE.
Also, note that the Northwood uses (staggered) 16-bit adders whereas
AFAIK the Prescott does not use that idea.
However, I guess that the OP did not have adders surrounded by an
expensive CPU in mind.
|
Well how about some of the new RAP arrays like the Elixent stuff ? |
|
| Back to top |
|
|
Eric Smith
Guest
|
| Posted:
Wed Feb 23, 2005 4:02 am Post subject:
Re: Fast Adders |
|
|
anton@mips.complang.tuwien.ac.at (Anton Ertl) writes:
| Quote: | However, I guess that the OP did not have adders surrounded by an
expensive CPU in mind.
|
Perhaps not, but the stated question was about as meaningful as "how long is
a piece of string". |
|
| Back to top |
|
|
|
|
|
|
FAQ
Memberlist
Register
Profile
Log in to check your private messages
Log in