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Staro 02.07.2006., 01:15   #1
crn
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Sinhrono / Asinhrona dilema

Ne smatram sebe overclockerom ali bio sam na neki način 'prisiljen' brljati po BIOS-u i sad imam dilemu.
Kako mi proc ide do @270 a memorija do @220 (2.5-2-3-5 1T) nisam siguran koje postavke ostaviti
(bar dok ne nađem neku memu koja bi bolje pratila proc)

Sinhrono:


ili asinhrono:


Obje opcije rade stabilno na stock naponima a gledajući benchmarke očito je da druga daje bolje rezultate... ali gdje god da čitam:
Xtremesystems: Overclocking guide
PC Perspective: The memory guide
svi naglašavaju da je važnije imati proc i memu sinhrono na A64 platformi nego veči takt tako da... koja su vaša iskustva ? Koliko asinhrone postavke proca i memorije imaju utjecaj na stvarne performanse računala ?
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At first glance
I probably appear to be a somewhat ordinary,
somewhat average looking fellow.
Calm, harmless, at ease.

But this is by design.
You see, it is through decades of research and rigorous training that I have crafted this façade of normalcy.

And now, through intense concentration,
I am able to function in a social setting.
I can speak at length with educated people about
pertinent matters of public importance,
such as literature,
or the current political climate in Europe.

I am capable of conversing with you
without ever revealing that just underneath the surface
of this manufactured veneer
there hides an altogether different person.
A monster, some might say.
My alter-ego.
He is the opposite of the image I project.
He is the antithesis of Cool.
He is the LAST person you want to get trapped in a conversation with.

He is The Geek.
The obsessive science fiction movie watching,
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that I struggle daily to keep hidden from the world.

But The Geek Wants Out.

He want to talk to you.
He wants to give you his doctoral dissertation on why
The Adventures of Buckaroo Banzai Across the 8th Dimension
is the greatest fucking film of all time!

He wants to bitch slap you because
you’ve never seen Big Trouble in Little China.
What? Have you been living in a fucking cave?!

He wants to kick your ass in Star Wars Trivial Pursuit.
And he will.
Because he’s a fucking Geek.

And he wants his toys.
He wants the complete set
in mint condition,
still in the box.
He wants every item on the planet that is even remotely related to Ultraman.
Because Ultraman is Airwolf!

He could give a squirt of piss
about sports or politics or rhetoric.
Such things are of no consequence to him.
What matters is the release date of the next Lord of the Rings movie!

You see, The Geek can’t wait.
The Geek has no patience.
He wants what he wants when he wants it.
And all he wants is stupid shit!

He wants his own Tardis.
He wants his own light saber.
He wants to buy a DeLorean and he wants to drive it 88 miles per hour.

He wants movies.
He wants to see the Director’s Cut.
He wants the impossible to find Japanese bootleg with
6 minutes of never-before-seen footage.

He wants to watch Blade Runner. Again.
He wants to watch Brazil. Again.
He wants to watch A Clockwork Orange.
Again and Again!

But I deprive him of these things, as best I can,
until I can no longer ignore his voice
screaming in my head.

I am Jekyl. He is Hyde.
I am Bruce Banner. He is the Hulk.
Especially the Hulk from issues #272 to #378.

But no longer!
I am putting a stop to all this nerdy shit right now!
I’m an adult, for Christ’s sake!
And this body isn’t big enough for the both of us.
One of us has to go, and it’s gonna be him.
I banishing the Geek forever to the Phantom Zone,
just like in Superman II !
Because, in the end –
there can be only one.
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Staro 02.07.2006., 01:16   #2
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asinhrono... nije toliko bitno...
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Staro 02.07.2006., 01:34   #3
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Ma furaj asinhrono, najbolje je sinhrono, ali sitne su to razlike (mislim na to kad ti je proc na istoj frekvi a sa različitim mem. djeliteljima; nije ovo više soc.A da je važno ići na 1:1). Deri proc kolko ide, puno puno bolje je imati proc na 2650Mhz nego na 2200.

I nemoj bezveze trošit pare na memu koja će ići više kad ćeš profitirat samo u sintetičkim testovima...U real-life testovima (i samim aplikacijama u kojima radiš) neš ama baš niš osjetit (jer razlike pa skoro i nema)!

EDIT:
Zapravo, kolko sam skužil, crni se sa ovim slikicama *urči pred nama
šala
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Staro 02.07.2006., 01:41   #4
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I ja bih odabrao asinhrono... to ti unosi dodatne latencije u sustav, ali po pitanju performansi je to zanemarivo, veci dobitak ti je u vecem "FSB-u"
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Staro 02.07.2006., 01:53   #5
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Veći "FSB" (pravilnije bi bilo reći HTT) je bolji samo ako ga prati memorija 1:1 (ili ako se može narihtati da ti memorija radi asinhrono ali na većem taktu, tipa 313x8, mem. djelitelj 166 i memorija ti radi na 250mhz).
Inače, nema koristi od većeg HTT-a, osim kaj si dodatno mučiš ploču.

I opet, razlika je jako vidljiva samo u sintetici...
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Staro 02.07.2006., 08:51   #6
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Talking

Hmm kolko se ja kužim u A64 arhitekturu tu više nema Sinkrono/Asinkrono dileme...

AFAIK takt na kojem radi Mem kontroler se ne derivira iz FSB-a nego se djeli takt jezgre, dakle FSB je potpuno nevažan....
Jer je djeljitelj bukvalno Wait instrukcija iliti latencija koja drži x taktova do idućeg odašiljanja na memoriju...

Tako da FSB treba staviti tako da radi na što je većoj frekvi moguće da bi proc vrtio što bolje a memu staviš kako već ide i neće biti nikakvih posebnih latencija jer je djeljitelj npr. 12 a ne 10 ionako je to nebitno koliki je...
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Staro 02.07.2006., 10:36   #7
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s puno volje i truda ja sam mjerio performanse više puta, i uvijek mi je bolje bilo kad je bilo asinhrono. tjeraj proc kolko ide i priključi memoriju sa zategnutim latencijama.
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