help with 4870x2

[Morgan82]

Not sure whether this should be in the memory section or the graphic cards section.
Here it goes....couple of weeks ago upgraded my pc to vista 64 and bought 4gig of ram Corsair 4GB DDR2 XMS2 Dominator PC2-8500C5 .
My cpu is a 8400 and was running at 4ghz on xp with 2 gig of geil ram once I made the upgrade could not get anywhere near 4 ghz overclock and kept getting Nvlddmkm errors . Thought this was due to the gtx card that I had and vista 64 .
Just upgraded to 4870x2 card , card works fine with the drivers that came on the disc, Here's where the problem starts, when the ram is running at 1060mhz I received crashes when gaming more than half hour.Windows says its due to ati driver failing ,if I run the ram at 800mhz I dont get any crashes ,it runs fine.
I have the ram running in dual channel and manually set the times to 1066 mhz and the voltage to 2.1,is this correct?
Haven't overclocked the system as yet all on stock speeds
Thinking now that maybe it was the ram not the gtx card that was the reason why I couldnt get a good overclock after the upgrade.The motherboard is an asus rampage.
Should the ram be running at 1066 in dual channel?Or am I making a mistake doing this?
I tried the 8.8 beta drivers I couldnt get them to work
Cheers

 

[gary996]

what mobo you using?

 

[Morgan82]

Mobo is a Asus Rampage Formula Intel X48

 

[mda96bjh]

Not sure whether this should be in the memory section or the graphic cards section.
Here it goes....couple of weeks ago upgraded my pc to vista 64 and bought 4gig of ram Corsair 4GB DDR2 XMS2 Dominator PC2-8500C5 .
My cpu is a 8400 and was running at 4ghz on xp with 2 gig of geil ram once I made the upgrade could not get anywhere near 4 ghz overclock and kept getting Nvlddmkm errors . Thought this was due to the gtx card that I had and vista 64 .
Just upgraded to 4870x2 card , card works fine with the drivers that came on the disc, Here's where the problem starts, when the ram is running at 1060mhz I received crashes when gaming more than half hour.Windows says its due to ati driver failing ,if I run the ram at 800mhz I dont get any crashes ,it runs fine.
I have the ram running in dual channel and manually set the times to 1066 mhz and the voltage to 2.1,is this correct?
Haven't overclocked the system as yet all on stock speeds
Thinking now that maybe it was the ram not the gtx card that was the reason why I couldnt get a good overclock after the upgrade.The motherboard is an asus rampage.
Should the ram be running at 1066 in dual channel?Or am I making a mistake doing this?
I tried the 8.8 beta drivers I couldnt get them to work
Cheers

did you upgrade or reformat & install??

 

[Morgan82]

When I first upgraded the ram I reformatted the harddrive and installed a fresh copy of vista 64,when I changed the graphic card from the gtx8800 to the 4870x2 I uninstalled the nvidia drivers booted into safe mode and used driver sweeper to clear all nvidia drivers then installed the 4870x2 drivers that were on the cd that came with the card.

 

[w311zy]

When I first upgraded the ram I reformatted the harddrive and installed a fresh copy of vista 64,when I changed the graphic card from the gtx8800 to the 4870x2 I uninstalled the nvidia drivers booted into safe mode and used driver sweeper to clear all nvidia drivers then installed the 4870x2 drivers that were on the cd that came with the card.

When changing graphics cards or mobo's i think its best to do a full format.

 

[Speed]

I have to say I agree, changing the ram wouldn't of needed one, but I'm guessing that's not why you did it.

My suggestion would be if you had a spare empty hard drive is to switch it over and install a fresh copy of Windows, along with the drivers you need. That way you can be certain if the problem is driver related.

Also, make sure to download the Intel chipset drivers from the Intel website, the ones on the Asus site are very outdated.

 

[MDPlatts]

What voltage do you actually have on your RAM - and is your PSU/Mobo delivering the 2.1v you requested in the BIOS - maybe try a little more - and maybe some more IO voltage too ?

 

[Morgan82]

Thanks for the replies. I just set the ram times and voltage in the bios.
How can i read the voltage in windows?
so i know the ram is getting the correct volts?

 

[gary996]

does Everest do this?

 

[MDPlatts]

Thanks for the replies. I just set the ram times and voltage in the bios.
How can i read the voltage in windows?
so i know the ram is getting the correct volts?

I'm not familiar with Asus - but Abit have their uGuru BIOS screens and s/w for use within windows which can read them - and I'm sure Asus will have something similar - various utilities may be able to read them too but it would need to know quite a bit about the chipset which makes it a less likely option.

Most systems/psu's and mobos will undervolt - so will actually deliver less juice than you asked for - try pushing it to 2.15v and see if that improves things. It maybe that your old ram was more tolerant of lower voltages.