Gigabyte GA-X58A-UD7 Excessive DPC Latency

[Dark Mantis]

Thanks for sharing this information with the forum, it may well save someone else a lot of time trying out different settings.

[plop28]

Hi there,

im back !!

The new beta bios (fb10) for the GA-EX58-UD5 rev2 has fixed the issue for me. No DPC latency and no audio crackling.

See ya

[Dark Mantis]

Another member that it has worked for. Great!

[alpha1980]

Hello,

I also noticed the high latency with my UD7 board.
I would like to try the new bios but i dont know which revision it is.

cpu-z says "rev 1.3" , but there is no 1.3 for the UD7, is it?

thanks

[Dark Mantis]

Check on the bottom left hand side of the motherboard, it will be printed in white lettering just under the expansion slots.
It may not be fixed by a BIOS update though, it could be a program running in the background that is causing it.

[alpha1980]

thanks.

i could not reproduce the spikes ... it just happens .

i was playing sc2 2 hrs, everything fine
i streamed video , was ok
i played a 1080p video , all ok
i run a gpu benchmark , all ok

then 3minutes later, system idle , the latency was up again for a couple of minutes, then all back to normal

happens sometimes during a game (metro2033, sc2) or internet stream, but i dont think it's NB-heat related, because during the stress test it ran fine.

that's why i want to try the bios

[Dark Mantis]

Well let's hope the BIOS update does indeed fix it for you as it has for many others. If not try checking the programs that are set to run during idle.

[mythosmint]

Are you sure it's not the video card (gtx 460) that's causing it ? I just got the GTX 460 1GIG version and am getting these DPC spikes.

More info here @ http://www.evga.com/forums/tm.aspx?high=&m=508637

my system:

intel q6600
8gigs ddr2 800mhz ram
XFX 9300m
NVIDIA gtx 460
Windows 7 64bit

[Dark Mantis]

It's quite possible for any of the drivers to cause latency problems if they are badly written. It's all to do with how the driver accesses the kernal.

[plop28]

Hello,

Who have test the FB Bios ?

here for the rev 2.0 http://www.gigabyte.fr/products/product-page.aspx?pid=3450&dl=1#bios

[Dark Mantis]

I have the rev 1.0 board and have run most of the BIOSes that have been released for it. The latest update is very similar to the one that you are enquiring about I think so it is probably just a port of that to the rev 2.0 board.

[plop28]

hey

Ok, but i do not want to return to the same problem : the DPC Latency on the FA BIOS

[Dark Mantis]

Well if the Beta BIOS update FB10 worked for you there is no reason to think that the final release of it is going to be any worse. If you are in any doubt though why run it at all. Assuming that your current setup is stable stick with that.

[plop28]

OK i will test it. yes my setup is stable with the FB10 Bios.

Only one thing, i have 2 fans on my H50, and when the computer is booting, the second fan is not at 100%, i have to run Speedfan to solve that.

[Dark Mantis]

To be fair it really doesn't matter if neither of your fans were working at all on booting. As long as the pump is working the cool water in the system would keep the temperature down for at least several minutes just in passive mode.