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[realworldtech]Intel’s Haswell CPU Microarchitecture

post #1 of 33
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Quote:
Over the last 5 years, high performance microprocessors have changed dramatically. One of the most significant influences is the increasing level of integration that is enabled by Moore’s Law. In the context of semiconductors, integration is an ever-present fact of life, reducing system power consumption and cost and increasing performance. The latest incarnation of this trend is the System-on-a-Chip (SoC) philosophy and design approach. SoCs have been the preferred solution for extremely low power systems, such as 1W mobile phone chips. However, high performance microprocessors span a much wider design space, from 15W notebook chips to 150W server sockets and the adoption of SoCs has been slower because of the more diverse market.

.

Read the article

The most in-depth overview of Haswell I've read.
A definite "must read" for everyone interested in CPU architecture.
post #2 of 33
good read.
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post #3 of 33
Very interesting! Can't wait for the release thumb.gif
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post #4 of 33
Interesting, is there anything that wasn't covered by the Anandtech article?
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post #5 of 33

Re: [realworldtech]Intel

Hopefully I'm through basic and school with the Navy by the time Haswell is released, or I'm going to sit on my Sandybridge setup until the next generation Haswell is released.
post #6 of 33
Quote:
Originally Posted by TranquilTempest View Post

Interesting, is there anything that wasn't covered by the Anandtech article?
I think the AT article covered more.

AT gets a bit more in depth with the L3 cache changes and touches on sleep states/power management, while this article completely ignores it. This article also makes no mention of the increased L3 latency that the AT article mentions. The RWT article does a better job on memory hierarchy. AT does a better job of writing it in a way that you can actually understand what's going on.

I'd say just read the AT article. I love both sites, but this is far too technical to keep track of everything that's going on, and the AT article hits subjects that aren't mentioned here.

Also, this article puts Haswell at 10% faster than Sandy Bridge in existing applications. Anand Shimpi predicted 5-15% over Ivy Bridge per clock. I think the RWT article, annoyingly, uses Sandy Bridge and Ivy Bridge interchangeably. So I guess 10% on average, before potential clock speed increases.
Edited by Homeles - 11/20/12 at 9:26pm
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post #7 of 33
Quote:
Originally Posted by Homeles View Post

I think the AT article covered more.
AT gets a bit more in depth with the L3 cache changes and touches on sleep states/power management, while this article completely ignores it. This article also makes no mention of the increased L3 latency that the AT article mentions. The RWT article does a better job on memory hierarchy. AT does a better job of writing it in a way that you can actually understand what's going on.
I'd say just read the AT article. I love both sites, but this is far too technical to keep track of everything that's going on, and the AT article hits subjects that aren't mentioned here.
Also, this article puts Haswell at 10% faster than Sandy Bridge in existing applications. Anand Shimpi predicted 5-15% over Ivy Bridge per clock. I think the RWT article, annoyingly, uses Sandy Bridge and Ivy Bridge interchangeably. So I guess 10% on average, before potential clock speed increases.

Intel's own internal tests also quoted a 15% per clock advantage in existing applications so I think the AT estimates where just playing it safe.
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post #8 of 33
Looks like a good design from Intel.2013/14 keeps getting interesting.
post #9 of 33
Quote:
Originally Posted by BizzareRide View Post

Intel's own internal tests also quoted a 15% per clock advantage in existing applications so I think the AT estimates where just playing it safe.
I'm thoroughly (albeit blindly) convinced that the L3 cache being less aggressive than Sandy Bridge's is the reason why the performance isn't as exciting. To be fair though, Sandy Bridge was phenomenal.

The real unknown is whether or not Haswell will be a great overclocker or not. It'll be hard to top the precedent that Sandy set.
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post #10 of 33
I'm just excited about TSX. This is going to be required as we get more and more cores.

http://www.realworldtech.com/haswell-tm-alt/
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