Gentoo Archives: gentoo-user

From: Michael Mol <mikemol@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] new machine : CPU : 22 nm vs 32 nm
Date: Thu, 26 Jul 2012 13:57:28
Message-Id: CA+czFiBnhtriJAtWABwh3W-HiOTVo5CKbD_viZ7K6hi4x0tRTg@mail.gmail.com
In Reply to: Re: [gentoo-user] new machine : CPU : 22 nm vs 32 nm by microcai
1 On Thu, Jul 26, 2012 at 4:39 AM, microcai <microcai@×××××××××××××.org> wrote:
2 > 2012/7/26 Philip Webb <purslow@××××××××.net>:
3 >> I've listed what's available at the local store,
4 >> which I trust to stock reliable items, tho' I wouldn't ask their advice.
5 >>
6 >> All the AMD's are 32 nm , while the Intel recommended by one commenter
7 >> -- Core i5-3570 4-Core Socket LGA1155, 3.4 Ghz, 6MB L3 Cache, 22 nm --
8 >> is 22 nm : it costs CAD 230 & they have 3 in stock,
9 >> which suggests demand, but not the most popular ( 9 in stock).
10 >>
11 >> Isn't 22 nm going to be faster than 32 nm ?
12 >>
13 >> In the same price range, AMD offers Bulldozer X8 FX-8150 (125W)
14 >> 8-Core Socket AM3+, 3.6 GHz, 8Mb Cache, 32 nm ( CAD 220 , 2 in stock).
15 >>
16 >> How do you compare cores vs nm ?
17 >> How far is cache size important ( 6 vs 8 MB )?
18 >
19 > cache size is always the most important thing. cache miss is the top
20 > reason your application slows down.
21
22 Generally speaking, but it does depend on your workload; if you're
23 processing and referencing the same piece of memory over and over,
24 cache shines. If you're streaming through a lot of data...not so much.
25
26 Certainly, though, the former behavior is far more common.
27
28 --
29 :wq