Core 2 Duo procesory - skusenosti, pretaktovanie

[r1z1ko]

Preco mi ukazuje v CPUZ nasobic 6 ale v biose ho mam nastaveny na 10. a taktiez mi to ukazuje 1200Mhz namiesto povodnych 2Ghz.
Mam E4400
ASUS P5K SE
X1950 pro
A 2x1GB 800Mhz OCZ

[Gudas]

Preco mi ukazuje v CPUZ nasobic 6 ale v biose ho mam nastaveny na 10. a taktiez mi to ukazuje 1200Mhz namiesto povodnych 2Ghz.
Mam E4400
ASUS P5K SE
X1950 pro
A 2x1GB 800Mhz OCZ

Vypni EIST a C1E.

[ujo Andydúla]

Nuz akurat som dostal svoj E2160 na stabilnych 3200 MHz.
NB voltage:1,2V
FSB Termination voltage: 1,25V
BIOS napatie: 1,5250V
CPU-Z 1.40.5 napatie IDLE: 1,49V
CPU-Z 1.40.5 napatie BURN: 1,39V
Chladic Sythe Ninja + Rev.B + Coollaboratory Liquid Pro + Nexus 120mm FAN na 1070 otackach.
Teplota v miestonosti: 29°C
Teplota v zatazi 100% Workload Level obe jadra cez Intel TAT (merana cez Intel TAT) po 15 minutach Burnu: 89°C (Len 89°C...krucis! Musi horiet viac! Viaaaaaac!)
Slusne, na to, ze ten procesor stal 3000,-SK...

Inak velmi malo ludi tu pise o nastaveni napatia pre NorthBridge a FSB Termination, pricom tieto su velmi dolezite hlavne pri vysokych FSB.

[crux2005]

a podla teba ma kazda doska moznost v Biose s nazom "FSB Termination voltage" ?

[marduk]

ja s tym mojim 6300 na p5b stracam trpezlivost

2.56 je malo ale najdem si den a pohram sa s tym

[Gudas]

Celkom zaujimavy stuff, hlavne druhy post, ktory pojednava trocha o problematike frekvencie Northbridge... komu sa chce, precitajte...

[ujo Andydúla]

a podla teba ma kazda doska moznost v Biose s nazom "FSB Termination voltage" ?

FSB Termination voltage - kazda doska rady ASUS P5B.
A nastavitelne napatie NorthBridge kazda OC-Friendly.
Samozrejme su tie polozky trosku inak pomenovane, ale myslim, ze vieme, o co ide.
Zjavne ale vacsine ide procak nataktit vyborne aj bez toho.
Ja som sa s tym pohral a som prekvapeny, co sa da vymackat z CPU pomocou tychto nastaveni. vCore nieje vsetko. Ale to vsetci vedia, len ja som trosku pribrzdeny a trva mi to, kym privyknem...

marduk: Ty si spravil obrovsku chybu, ze si kupil P5B a procesor s nasobicom 7, niet divu, ze sa cez 400 MHz FSB nevies dostat, ta doska na take vysoke FSB nieje proste stavana, zakladny model nebude nikdy mat kvalitu Deluxe verzii...
Proste mu pridaj napatie na NB a FSB a uvidis...

[marduk]

marduk: Ty si spravil obrovsku chybu, ze si kupil P5B a procesor s nasobicom 7, niet divu, ze sa cez 400 MHz FSB nevies dostat, ta doska na take vysoke FSB nieje proste stavana, zakladny model nebude nikdy mat kvalitu Deluxe verzii...
Proste mu pridaj napatie na NB a FSB a uvidis...

ja som mal pol roka ds3 lenze odisla a nemohol som ju zohnat. kedze som uz mal pc mimo 25 dni a cakal by som dalsich 10 aj viac(co by bolo neunosne), zobral som najblizsiu alternativu

[ujo Andydúla]

Vtedy nebolo moc z coho vyberat, verim ti, ja som tiez vzal P5B, lebo ine boli moc drahe a nebudem k procaku za 3000,-SK kupovat Deluxe dosku za 6000,-SK. Proste som kupil odpadovy CPU s odpadovou doskou spolu za 6000,-SK. Aj tak ten vykon nevyuzijem, len sa v tom rypem pre zabavu...

[Toman]

Ma niekto kombinaciu Asus P5K a 2160tku?

[Gudas]

Kratky "pokec" o L2 cache, vykone a pretaktovani:

4 facts:

1. Cache is there to compensate memory access latency
2. More cache is needed to compensate inter-cpu communication
3. Higher clocked is the CPU, it makes more inter-cpu and memory requests.
4. Clocking higher the CPU retains the original quantity of cache

The bottleneck is in the cpu-to-cpu and cpu-to-memory bus...
Overclocking needs higher FSB, and that is exactly what you do when you overclock, raise FSB and raise memory clock. On intel systems this is true and this means clocking higher the CPU too. That is because of the front side bus deriving from the northbridge, it dictates the memory AND cpu-to-cpu bus speed. So when an (current) Intel CPU goes higher in clocks it needs more data through its FSB, but the cache remains the same - and the front side bus too (since faster chips have only higher multiplier). When you overclock the cpu you overclock the cache too, but this means nothing since its merely a requirement. If it didn't overclock with the processor you would have SEVERE performance drops.
Conclusion: current amount of cache is what Intel calculated as the right amount for Penryn bandwidth needs and improvement for applications (encoding is one of those that will benefit much). The amount of cache is generally computed based on architecture, and scaling is mainly dictated by architecture too. I've read somewhere that C2D doesn't need more than 3MB of cache, as more wouldn't help anything but applications that rely mainly on cache (ie encoding).

On AMD systems there is another bus in the way. The Hypertransport bus is for CPU-CPU and CPU-Peripherals communications. The FSB there is something fictional. Memory clock is postulated by division of the CPU clock - because of the integrated memory controller. And this is the reason why AMD cpus scale better with speed (with higher multipliers) - because you clock higher the memory controller too (giving the same memory speed you still have lower latencies)!

[l0k2]

P5B da 400FSB bez problemov, ak nevies nastavit, bude problem niekde inde.

Toman, P5K ani nespominaj, je tolko verzii, ze uz ma ide porazit, a problemy ani nehovorim. Zatial iba jednu co som kupil isla bez akychkolvek problemov. (network, usb, ide radic..)

[jergus]

Celkom zaujimavy stuff, hlavne druhy post, ktory pojednava trocha o problematike frekvencie Northbridge... komu sa chce, precitajte...

Skusali ste to uz niekto??? Nejde mi ani o to dosiahnut na mensom nasobici vyssiu frakvenciu, ale ci niekto "preskocil" jeho max FSB frekvenciu

[Cobretti]

ja s tym mojim 6300 na p5b stracam trpezlivost

2.56 je malo ale najdem si den a pohram sa s tym

Cauko, ..mam rovnaku zostavu ako Ty. Da sa z toho vymlatit 3.01 Ghz ( 7 x 430 ) . Skus dat casovanie pamate na 4-4-4-12 a voltaz cpu mam 1.36V. Pamate maju 2.1 V. Hodne zdaru.

Vysledok :

http://ns.rsnet.sk/gallery2/main.php?g2_itemId=690

Hodne zdaru

[marduk]

...tu bola zbytocna citacia...

cez vikend sa s tym pohram

inak zaujimave ze s ds3 mi to slo na 2.8 ghz so vsetkym na defaulte