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Questions about GIGABYTE products => Motherboards with Intel processors => Topic started by: samsagaz on August 24, 2012, 08:10:27 am

Title: GA-Z77M-D3H PCI Latency Problem
Post by: samsagaz on August 24, 2012, 08:10:27 am

Hi guys, im trying to fix an latency issue that im having with my GA-Z77M-D3H Motherboard.
 
I already tryied Bios F4, F5, F7, F9, F10, F11 and the latency of the sound card connected to the PCI Port is 1500us! without the card i get 125us :/
 
someone know if is possible to fix it?
 
Thanks

Title: Re: GA-Z77M-D3H PCI Latency Problem
Post by: Dark Mantis on August 24, 2012, 10:03:58 am

Hi

The problem is easilly fixed but finding the culprit can be more troublesome. Latency is caused by bad programming generally. There are various rules for how a program should access the core and if it doesn't follow these rules it can result in the core not being released for the next operation and this causes a bottleneck that backs up. The biggest headache from our perspective is that we have to find the rogue program/driver.

The best way to tackle this is to go to Task Manager and then in the Processes section stop all the processes that are not required for Windows to run. If you do this one at a time until you find the one that is causing the trouble. Then depending on what it is as to how you tackle the repair.

If none of that works you would need to go to Device Manager and disable all the devices not needed to run the system. Then you can enable them one at a time and again see which one causes the problem.

Have fun!

Title: Re: GA-Z77M-D3H PCI Latency Problem
Post by: samsagaz on August 24, 2012, 05:01:15 pm

As i told you before, the problem are the sound card connected to the PCI card. i figure that tht problem are from the file Envy24HF.sys.

If disabled the Card from Device Manager i get low latency 125ys)

Think that im having problem with my pci slot.

Title: Re: GA-Z77M-D3H PCI Latency Problem
Post by: samsagaz on August 25, 2012, 01:08:58 am

try new bios F8, F10a and still get the same issue :(

Title: Re: GA-Z77M-D3H PCI Latency Problem
Post by: samsagaz on August 25, 2012, 04:57:58 am

I read this

"it is a known issue with the PCI slot, b/c it isn't native to the chipset it causes high DPC latency"

Is that True? Hope Gigabyte stuff told me something about that, because i dont want a new motherboard (purchased it 1 month ago) with that kind of problem! I can get cheapest motherboards with not so high latency!

Title: Re: GA-Z77M-D3H PCI Latency Problem
Post by: samsagaz on August 27, 2012, 04:21:56 am

Ok, so noone know something about PCI Latency? :/

Title: Re: GA-Z77M-D3H PCI Latency Problem
Post by: samsagaz on September 06, 2012, 09:12:50 pm

they dont have an solution for my case, amazing.

Looks like need to drop this motherboard!

I really cant beliave it i spend more than 150USD on that crap. And gigabyte dont answer my questions.