3200+ za 3800+

[Quake]

Da li mi se isplati mijenjati 3200+ Venice za 3800+ Newcastle s nadoplatom?Ovaj 3800+ nema sse3,koliko on utječe na performanse i za šta on uopće služi?

[baterija]

đizs,kaj si tolko zapeo za taj sse3.To ti je skup instrukcija koje
A 3800+ ima MMX +,3DNOW +,SSE ,SSE2, x86-64
SSE3, also known by its Intel code name Prescott New Instructions (PNI), is the third iteration of the SSE instruction set for the IA-32 architecture. Intel introduced SSE3 in early 2004 with the Prescott revision of their Pentium 4 CPU. In April 2005, AMD introduced a subset of SSE3 in revision E (Venice and San Diego) of their Athlon 64 CPUs. The earlier SIMD instruction sets on the x86 platform, from oldest to newest, are MMX, 3DNow! (developed by AMD), SSE and SSE2.
Contents




Changes

The most notable change is the capability to work horizontally in a register, as opposed to the more or less strictly vertical operation of all previous SSE instructions. More specifically, instructions to add and subtract the multiple values stored within a single register have been added. These instructions simplify the implementation of a number of DSP and 3D operations. There is also a new instruction to convert floating point values to integers without having to change the global rounding mode, thus avoiding costly pipeline stalls. Finally, the extension adds LDDQU, an alternative misaligned integer vector load that has better performance on NetBurst architectures for loads that cross cacheline boundaries.


CPUs with SSE3

* AMD:
o Athlon 64 (since Venice Stepping E3 and San Diego Stepping E4)
o Athlon 64 X2
o Athlon 64 FX (since San Diego Stepping E4)
o Opteron (since Stepping E4)
o Sempron (since Palermo Stepping E3)
o Turion 64
* Intel:
o Celeron D
o Pentium 4 (since Prescott)
o Pentium D
o Intel Core
o Xeon (since Nocona)
* VIA/Centaur:
o C7
* Transmeta
o Efficeon TM88xx (NOT Model Numbers TM86xx)


New Instructions


Common Instructions

Arithmetic

* ADDSUBPD - ( Add-Subtract-Packed-Double )
o Input - { A0, A1 }, { B0, B1 }
o Output - { A0 - B0, A1 + B1 }
* ADDSUBPS - ( Add-Subtract-Packed-Single )
o Input: { A0, A1, A2, A3 }, { B0, B1, B2, B3 }
o Output: { A0 - B0, A1 + B1, A2 - B2, A3 + B3 }

AOS ( Array Of Structures )

* HADDPD - ( Horizontal-Add-Packed-Double )
o Input: { A0, A1 }, { B0, B1 }
o Output: { B0 + B1, A0 + A1 }
* HADDPS ( Horizontal-Add-Packed-Single )
o Input: { A0, A1, A2, A3 }, { B0, B1, B2, B3 }
o Output: { B0 + B1, B2 + B3, A0 + A1, A2 + A3 }
* HSUBPD - ( Horizontal-Subtract-Packed-Double )
o Input: { A0, A1 }, { B0, B1 }
o Output: { A0 - A1, B0 - B1 }
* HSUBPS - ( Horizontal-Subtract-Packed-Single )
o Input: { A0, A1, A2, A3 }, { B0, B1, B2, B3 }
o Output: { A0 - A1, A2 - A3, B0 - B1, B2 - B3 }
* LDDQU - As stated above, this is an alternative misaligned integer vector load. It can be helpful for video compression tasks.
* MOVDDUP, MOVSHDUP, MOVSLDUP - These are also used for complex numbers, and can be helpful for wave calculation like sound.

* FISTTP - Like the older x87 FISTP instruction, but ignores the floating point control register's rounding mode settings and uses the "chop" (truncate) mode instead. Allows omission of the expensive loading and re-loading of the control register in languages such as C where float-to-int conversion requires truncate behaviour by standard.



Intel Instructions

* MONITOR, MWAIT - These optimize multi-threaded applications, giving processors with Hyper-Threading better performance.

[nicko]

ja ne bi mjenjao...venicea lako kloknes za 400mhz i imas 3800+

[Quake]

Ma nisam zapeo,samo me zanima za šta služi i to
@baterija:javim ti se onda još
Čuo sam da aplikacije najviše profitiraju od sse3,zato pitam.Je li to istina ili ne?

[Wolverine]

ja se nebi mjenjao samo zato kaj je NewCastle a to su najlošije s939 jezgre! A taj E3 Venice ide ziher i preko takta tog 3800+

@baterija
dobar copy/paste ali ti mu još nisi zdravo seljački objasnio ćemu to služi

[Milentije]

A kakva su vam misljenja o NewCastle jezgrama u s.754 procevima?

[nicko]

Autor Quake

Ma nisam zapeo,samo me zanima za šta služi i to
@baterija:javim ti se onda još
Čuo sam da aplikacije najviše profitiraju od sse3,zato pitam.Je li to istina ili ne?

samo neke, koje koriste te instrukcije, a takvih nema mnogo...

[Lihto]

ne isplati se mjenjat

[OveRkiLL]

ne valja ti to, da je winchester jezgra onda još možda, ali ovak ne. newcastle je 130nm, a venice i winchester 90nm.

[Quake]

Ma odustao sam od toga

[maX]

Pametno

[iveumag]

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