http://www.adkproaudio.com/PCI-E.cfm


***Updated

The new Intel 955 Chipset now seems to have no issues regarding PCIe bandwidth hogging and higher powered video cards. this is great news as its the motherboard that supports Dual Core Intel.

AMD Dual Core X2 now seem to work well with Nforce 4. However use caution.

Issues still remain with older items below!

There are a number of issues from the new Intel 915/925 chipsets as well as the new AMD Nforce 4 or Via K8T890 that use PCI-E video cards.

First let me state what does work.
An Intel 915/925 motherboard coupled with a very low powered PCI-E video card such as ATI X 300 LE or Nvidia 6200.
With this set up it works as good as the older 865/875 chipsets with AGP and gives you the benefit of the newer Intel Processors. (Increased Cache and support for 64bit OS) as well as speeds of 3.6G and 3.8G.

As you increase your video card power it decreases your ability to use the PCI bus (this includes Firewire and Harddrive I/O) therefore decreases your ability to use the system for Pro Audio. Some exceptions to this would be triple Bus Dual Xeon motherboards and its very hit and miss.
For AMD single core its worse, we have not been able to use any AMD single motherboard with PCI-E video successfully for Pro Audio.

For Dual Opterons things are differant, the New Tyan 2895 Dual Opteron and Dual PCI-E 16X motherboard is awesome.

The PCI-E architecture is brand new and in its infancy. From looking over white papers from various manufacturers and Intel, it would appear that it is not properly implimented yet. They are presently using a type of PCI to PCI-E bridge rather than a PCI-E controller. One of the reasons for this is it will require a near complete re-write of Windows as well as alot of software to properly impliment the protocol.

While other vendors have decided to sell this platform we feel at this time the negatives far outway the positives. Instead we use an 875 chipset with AGP that allows for the newer Intel Processors with out the downside of PCI-E.

We also feel that the AMD 939 outperforms the Intel platform therfore making it a moot point.

No. Tak to je hezký, přemýšlel jsem o upgradu z P4, ale asi ještě počkám. Jinak info od našeho obchodníka: Do 3 měsíců klesnou ceny displayů až o 20%. Takže kdo ho chcete teď kupovat (tak jako já), tak buďte trpěliví!

http://www.pctuning.cz/index.php?option ... &Itemid=67

takze s nforce4 pci-e zacinaju mat problem aj hraci

Updated 4-15-06
Nforce 4 is fixed “almost”
Since I was the loudest mouth piece about this issue, I thought I better be the one to release this. After 16 months of Nforce 4 motherboards plagued with issues due to PCIe, making them near useless for Pro Audio and in particular UAD cards, we now believe it is resolved.

We were able to run 2 UADs @97% and 1 Powercore @ 100% simultaneously with an RME fireface. (firewire on pcie) We also tried 2 UADs and a Lynx AES 16, as well as 1 UAD and 1 Poco. All performed very well with Nuendo 3 and Sonar 5.

Nforce 4 still shows a performance penalty of approx 10% over the long discontinued Nforce 3 ultra. We are continuing to work with both AMD and Nvidia to resolve this. The performance penalty only seems to happen in Nuendo 3. we have not yet tested Samplitude, Live, Pro tools, etc.

We can now recommend this chipset, however be advised we have not gone back and retested every Nforce 4 motherboard we had tested in the past. Nor do we intend to. For anyone owning Nforce 4 already I highly recommend you update your bios, and nvidia drivers.

I would like to thank UAD for their constant effort in working with us to resolve numerous issues with various chipsets during the last yr +. I would also like to thank AMD and Nvidia for their support with this as well. Also a thanks to Anders Fahlen in his pursuit of the issues and help getting the word out with all chipset issues.

Scott

info o chipsetoch a ich vhodnosti pre proaudio
http://www.rme-audio.com/english/techinfo/PCIe_01.htm

Tedka se delaj UAD a TC Powercore na PCIe... tak by s tim snad nemel byt problem

su uz tie karty vonku? podla mna tie problemy by mohli byt este horsie...

totiz ide o to ze graficka karta pci-e drhla zbernicu pci.

pri agp sa to nedialo pretoze agp bola od pci oddelena.

teraz bude zase graficka karta aj zvukovka na pci-e takze drhnutie je zase dost pravdepodobne.

Ted vysla verze PCIe na UAD http://uaudio.com/products/digital/expr ... index.html
Powercore je uz venku delsi dobu...

Ja kdyz jsem kupoval pred pul rokem novej komp tak jsem se radeji vykaslal na desku s PCIe,diky varovani na ezone

je ta PCIe UAD aspon nadupanejsi nebo jinak rychlejsi, lepsi, uzasnejsi, s mensi latenci nebo tak neco ? nebo je to proste jenom ta stara UAD ?

No porad to same....

aj ja este dlho zostanem na svojej nforce3 doske dalsi pocitac bude az conroe niekedy o rok-dva.

solarfall : kazda doska ma schemu.. a tam vidis ktore zbernice su zdielane .. PCIe minimalne na grafiku urcite nemoze byt zdielana s PCI ..

Neural_I píše:je ta PCIe UAD aspon nadupanejsi nebo jinak rychlejsi, lepsi, uzasnejsi, s mensi latenci nebo tak neco ? nebo je to proste jenom ta stara UAD ?

PCIe ma mit mensi latenci , vykonove jsou ale stejne , coz je skoda .
Po tolika letech uz mohli pridat i vykon DSP

ADDyS píše:Ted vysla verze PCIe na UAD http://uaudio.com/products/digital/expr ... index.html
Powercore je uz venku delsi dobu...

Ja kdyz jsem kupoval pred pul rokem novej komp tak jsem se radeji vykaslal na desku s PCIe,diky varovani na ezone

varovanie ezone bolo plane... tiez som vzapati vymenil NF4 za NF3 a skusil testy. nepotvrdilo sa nic, dokonca s NF3 boli lupance skor (pri nizsom zatazeni ako s NF4). podla mna su tieto problemy zanedbatelne, pretoze nastavaju az pri extremne zatazenom systeme, kedy sa priechodnost PCI zbernice stava kririckou. pri beznych home aplikaciach tento problem neexistuje.

Pytkin píše:solarfall : kazda doska ma schemu.. a tam vidis ktore zbernice su zdielane .. PCIe minimalne na grafiku urcite nemoze byt zdielana s PCI ..

Pytkin prestuduj si tie materialy na RME
http://www.rme-audio.com/english/techin ... _tests.htm
http://www.rme-audio.com/english/techinfo/PCIe_01.htm

a adkproaudio.com
http://www.adkproaudio.com/PCI-E.cfm

They are presently using a type of PCI to PCI-E bridge rather than a PCI-E controller.

jednoducho podla mnoho userov treba na nforce4 pouzivat vyssie latencie pri vysokej zatazi procesoru... cize z toho vyplyva ze ten chipset ukroji z vykonu...

The single-CPU, desktop versions, of the nForce4 chipsets, in combination with single-core AMD 64 CPUs, are still reported to have the original PCI to PCIe interconnectivity issue by which minimum latency settings without pops/clicks in Thonex audio stress tests are significantly increased and/or number of VSTi/samples reduced compared to the nForce3 @ socket 939 chipset.

However, it has recently been demonstrated via audio stress tests that the single-CPU nForce4 chipsets perform almost as good down to some 256 samples latency setting (Thonex/Thonex II) when used in combination with dual-core AMD 64 X2 CPUs. At lower latency settings this combination still cannot run the Thonex test without pops/clicks and/or have higher CPU loads than the nForce3.