It appears you have not yet registered with our community. To register please click here...

 
Go Back [M] > Madshrimps > WebNews
What you need to know about Intel's Nehalem CPU What you need to know about Intel's Nehalem CPU
FAQ Members List Calendar Search Today's Posts Mark Forums Read


What you need to know about Intel's Nehalem CPU
Reply
 
Thread Tools
Old 9th April 2008, 14:57   #1
Madshrimp
 
jmke's Avatar
 
Join Date: May 2002
Location: 7090/Belgium
Posts: 79,001
jmke has disabled reputation
Default What you need to know about Intel's Nehalem CPU

In this article, I'll give a general overview of Nehalem, focusing on the major changes and big new features that the architecture will eventually bring to Intel's entire x86 processor line. A more in-depth examination of Nehalem from me will show up later in the spring; for now, read on for the highlights. Here's what you need to know about Nehalem.

http://arstechnica.com/articles/paed...ut-nehalem.ars
__________________
jmke is offline   Reply With Quote
Old 14th April 2008, 14:56   #2
Kougar
 
Posts: n/a
Default

Great article. I didn't realize the changes were quite so numerous such as the loop stream detector.

Quote:
Nehalem widens the number of x86 instructions that can be macrofused in two ways. First, it expands four new compare + jump branch conditions to the list of macrofusable instruction pairs. Second—and this is major—it can now macrofuse 64-bit instructions
Macrofusion is partly what gives C2D it's performance advantage, it will be very interesting to see if this new 64-bit capable version means 64-bit OS's will offer better performance at long last?

I still am still betting QPI is going to show a significant performance improvement with the Nehalem generation thanks to all these changes. SMT should actually be useful this time around.
  Reply With Quote
Old 14th April 2008, 15:24   #3
Madshrimp
 
jmke's Avatar
 
Join Date: May 2002
Location: 7090/Belgium
Posts: 79,001
jmke has disabled reputation
Default

doesn't 64-bit improvements come from applications written especially for 64-bit, which take advantage of the upgraded architecture ?
__________________
jmke is offline   Reply With Quote
Old 14th April 2008, 15:31   #4
Rutar
 
Posts: n/a
Default

What we need to know? It made the CTO of AMD resign =P
  Reply With Quote
Old 14th April 2008, 22:19   #5
Kougar
 
Posts: n/a
Default

Quote:
Originally Posted by jmke View Post
doesn't 64-bit improvements come from applications written especially for 64-bit, which take advantage of the upgraded architecture ?
Not sure the program must be natively 64bit to see an improvement. If I understand this Nehalem will simply act upon several specific 64bit instruction sets, and fuse them together for processing in half the time. Same principle as the current 32bit macrofusion. Except with Core 2 Duo 64bit instructions are first split into 32+32, then processed.

64bit applications on 64bit Operating Systems would no longer need to be split into 32bit+32bit. Instead, select 64+64 instruction sets would be processed in the same clock cycle previously taken to process a 32+32bit (A single split 64bit) instruction set. Or am I wrong?
  Reply With Quote
Reply


Similar Threads
Thread Thread Starter Forum Replies Last Post
Intel's fastest server CPU for 2010 is 6-Core Xeon 5680 jmke WebNews 1 18th February 2010 01:47
Hood popped open on Intel's Clarkdale CPU: GPU and CPU Die Shot jmke WebNews 0 26th November 2009 10:50
Intel's Turbo Mode on Core i5 to boost CPU to 3.6Ghz jmke WebNews 0 24th April 2009 23:41
Intel Plans 10W Nehalem CPU jmke WebNews 0 5th February 2009 17:17
Asus P6T Deluxe & Intel Nehalem CPU jmke WebNews 0 27th October 2008 11:46
Inside the Nehalem: Intel's New Core i7 Microarchitecture jmke WebNews 0 26th August 2008 18:23
Nehalem - Everything You Need to Know about Intel's New Architecture jmke WebNews 0 21st August 2008 21:21
Intel Nehalem CPU B1 Stepping Photo jmke WebNews 0 18th August 2008 17:19
Intel Nehalem Mainstream CPU coming in Q3 2009 jmke WebNews 0 17th July 2008 10:34
Intel's CPU architects talk about Penryn, Nehalem jmke WebNews 0 8th May 2007 10:02

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


All times are GMT +1. The time now is 13:22.


Powered by vBulletin® - Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO