New PC -> Error: PCI Bandwidth limit reached - HELP!

[next to nothing]

I guess if u only have one card then it will do fine

However there are 5 slot native PCI socket 1155 variants as well, like http://www.newegg.com/Product/Product.a ... _-13131721 and http://www.asus.com/Server_Workstation/ ... AS4L/#CPUS .
I would check on CPU compability and placing of heatsinks behind the slots though.

[Warp69]

the info is factual, the PCI bus is NOT natively supported with the p67 and it IS one of the worst performing chipsets(for PCI performance ONLY) since the pentium, true.

Since the p67 doesn't have native support for the PCI interface, then how can it be the worst performing chipset regarding PCI performance - that's like saying that XITE IS one of the worst performing sound cards (for Mac performance ONLY)?

Are every PCIe bridge equal? IDT, PLX, TI, Pericom etc all makes PCIe bridges.

Asus apparently uses Asmedia ASM1083.
Gigabyte uses iTE IT8892.

[garyb]

for all those who are truly tech saavy, you will know what to do. for everyone else, the generalization is appropriate.

from what i've seen, none of the pci-e bridges work as well as a bx, 8xx, or p35 chipset, not even close. usable? maybe, it depends on one's expectations, but not recommended for Scope PCI cards at this time.

maybe the poor performance could even be addressed through bios upgrades, who knows?

until i see otherwise(people should post their masterverb tests when they buy these newer chipsets), i continue to say the same thing, especially when so many users complain about performance. when these newer chipsets are confirmed to work well, i'll recommend them. honestly guys, no need to be assholes, it's not like i have an agenda against socket 1155. actaully, i couldn't possibly care less about the computer technology, except for it's ability to do the work i want it to do. if i want to run a Scope PCI card, THAT's what i care about, putting it into an environment where i can make the best use of it's tools. making music is not about building machines.

[geamella]

How do I measure how much bandwidth my home network is using? I just recently heard of the 250 gb bandwidth cap for Comcast. I just bought the NetGear RangeMax Wireless-N. I have my own computer, one more computer, an Xbox 360 with Live, and my iTouch using this connection.
__________________
keyword research ~ keyword tool ~ keyword tracking ~ affiliate elite

[astroman]

the thread is about internal bandwidth on the PCI bus, not external network bandwidth...
sorry, no idea...
but it highly depends on what you are specifically doing.

cheers, Tom

[t_tangent]

LOL Tom,

Actually there seems something not right about geamella. This is his first post in this forum and I thought I would try to point him to a more useful website for that kind of topic, so typed his question into google and surprise surprise there is the exact same question asked with exactly the same wording 3 years ago at following

http://answers.yahoo.com/question/index ... 219AAihMnG

Very strange.

[garyb]

[Sheldon]

Let's calculate. So we have ASM1083 PCI Express-to-PCI forward bridge. It's x1 PCI Express to 32-bit PCI Bridge and has features
- Support PCI bus 33/66 MHz
- Support 3 PCI Masters
- SSC Support
- CLKRUN Support
- PME Support.
For x1 pci-e 2.0 we have the duplex bandwith
8 Gbit/s=8000 Mbit/s=1000 MB/s
PCI bus 33/66 MHz 32-bit has bandwith
133 MB/s for 33 MHz
266 MB/s for 66 MHz
So theoretically ASM1083 may provide three 66 MHz 32-bit PCI or 4 but 4th will be lacked a little bit. Any suggestions?

[thermoman]

Hi guys,

just wanted to let you know that the problem seems to be the ASM1083 chip:

For about 6 months many users have been having interrupt problems with PCI boards, but it hasn't been
easy trying to find where the problem may be. However, it is now looking likely that the problem lies
in the ASM1083 PCIe-PCI bridge chipset, as used by Asus in many Sandybridge and AMD boards.

Many people using Linux do have this problem.

The right terms to google this are:

• irq "nobody cared" sandy bridge
• irq "nobody cared" asm1083

In this thread (same thread) they even link to this thread on planetz as one of the rare examples where windows users are affected.

Many people with DVB TV-cards are having problems with this chip on newer (mainly ASUS-) boards:

[mythbuntu] Disabling IRQ

The problem lies with the interrupt handling of this chip in some circumstances where the chip isn't answering fast enough (that's what i understood reading all the other postings).

Quote from Linux Kernel Mailing List:

Specifically for the Asus E45M1-M PRO I would recommend:

1. The IRQ bug manifests itself when using any device behind the
ASM1083 bridge. That includes the 2 PCI slots on the motherboard, as
well as the Firewire interface. Avoid their use. Preferably use the
PCIe x1 slot.

2. An important problem is that, when IRQ 16..19 goes down, an
integrated device, which otherwise works flawlessly, goes along with
it. This includes the SATA, USB and both audio (HDMI / Analog)
subsystems. If possible, enable the use of MSI for these devices.
Clemens's patch for AHCI MSI is a real help here.

3. Step 1 above will practically eliminate the occurrence of the IRQ
bug. If the PCI bus really is needed, the patch below must be used
(with the kernel irqpoll command line option turned on, of course).

Just wanted to give you a heads up - even registered for this

[next to nothing]

Thanks for your effort

I see there is a lot of talk about Asus (and if i am not mistaken, Intel boards as well), however i see more people have luck with the Gigabyte GA-H67A-UD3H-B3 from what i remember, with the same ASM chip (which suggest hardwire/revision/batch fault).

For information, people here generally need PCI latency not bigger than 1-10ms, so generally a PCI-E > PCI bridge will never work. Native support is still needed

Thanks again for your effort and if you have some resources to non-briged PCI cards of newer sockets ( yes we are emotive-ional i guess ) please report

I might be wrong but please correct me

Source:
http://communities.intel.com/thread/22547

[garyb]

as i said, socket 1155, not recommended for pci cards. it may work, but....

when the new chipsets are out and common, this issue may be corrected.

[Sheldon]

I do not have nor irq problems neither latency ones. Only master verb test upsets me (3 ones after adding 4th i get the message pci capacity limit). So i don't understand why this happens, theoretically there are no reasons for it.

[ehasting]

For me, this card have proved to be very stabile! only down side is that its only have 2 pci slots!

Gigabyte GA-MA770-UD3
http://www.gigabyte.com/products/produc ... id=2982#sp

[Sheldon]

For me, this card have proved to be very stabile! only down side is that its only have 2 pci slots!

Gigabyte GA-MA770-UD3
http://www.gigabyte.com/products/produc ... id=2982#sp

What about master verb test? How many masterverbs can you add before pop up window ''PCI capacity limit'' appears?

[garyb]

I do not have nor irq problems neither latency ones. Only master verb test upsets me (3 ones after adding 4th i get the message pci capacity limit). So i don't understand why this happens, theoretically there are no reasons for it.

that is EXACTLY the problem with socket 1155 motherboards, in general. specifically, some may work fine. some may work fine for you and not others.

[Sheldon]

I do not have nor irq problems neither latency ones. Only master verb test upsets me (3 ones after adding 4th i get the message pci capacity limit). So i don't understand why this happens, theoretically there are no reasons for it.

that is EXACTLY the problem with socket 1155 motherboards, in general. specifically, some may work fine. some may work fine for you and not others.

As i understand you it's possible for some 1155 motherboards to provide full pci bandwidth? May be the mood of pci-e - pci bridge is locked to 33 Mhz and not to 66 Hz. this can explain bandwidth lack.

[ehasting]

For me, this card have proved to be very stabile! only down side is that its only have 2 pci slots!

Gigabyte GA-MA770-UD3
http://www.gigabyte.com/products/produc ... id=2982#sp

What about master verb test? How many masterverbs can you add before pop up window ''PCI capacity limit'' appears?

12 the last time i checked!

[Sheldon]

For me, this card have proved to be very stabile! only down side is that its only have 2 pci slots!

Gigabyte GA-MA770-UD3
http://www.gigabyte.com/products/produc ... id=2982#sp

What about master verb test? How many masterverbs can you add before pop up window ''PCI capacity limit'' appears?

12 the last time i checked!

How many dsp you card have? Mine has 6 and i have no idea what's the normal result of masterverb test for it? Dsp load after adding 4 masterverbs is about 50%. So i think it can do 8-9. May be i'm wrong.

[ehasting]

On 9 dsp i 11 masterverb, on 21dsp I did 12.

Frankly I don't know how much Bw each takes. But 12 is probably rather close to the limit. Maybe garyb have some insight here?

[garyb]

12 is pretty healthy. a system should run great even if it only does 6 or 7. it really depends on how you use your stuff.

if you use resources stupidly, in ways that make no musical sense, then there's never enough resources....ever.