The Corsair User Forums  

Go Back   The Corsair User Forums > Corsair Product Discussion > Memory

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
  #1  
Old 09-29-2009, 09:15 PM
Chickenfeed Chickenfeed is offline
Registered User
Chickenfeed's PC Specs
 
Join Date: Jun 2008
Posts: 4
POST ID # = 418673
Chickenfeed Reputation: 10
Default CM3X2G1600C7D timings on EX58-UD5

I have a question regarding the tRas timing on these modules. The XMP profile reports 7-7-7-20 timings yet for some reason windows is reporting the tRas running at 23 ( I have 7-7-7-20 manually keyed into the BIOS ) I've played around with the Performance profile options that gigabyte have but they don't seem to effect any timings of the ram itself (just the chipset) I am running a single 3x2 kit.

I am currently running at 1.66 vdimm, 1.355 QPI vtt and 1.3 vcore at 19x200 with the QPI at 3.6GHz (36x multi / 7.2GTs). Changing any of the clock speeds doesn't have any effect on anything ( reports 23 tRas at any settings )

The ram itself is working perfectly fine performance and stability wise I just wanted clarification on the tRas timing and if this is normal.

Here is a image of the info reported in windows.


Let me know if you require any more information ( BIOS settings ect ) Appreciate your feedback.
Reply With Quote


  #2  
Old 09-30-2009, 08:05 PM
Chickenfeed Chickenfeed is offline
Registered User
Chickenfeed's PC Specs
 
Join Date: Jun 2008
Posts: 4
POST ID # = 418844
Chickenfeed Reputation: 10
Default

To follow up, this issue appears to be an issue with the BIOS. It more than likely will be something that will be fixed in future BIOS revisions. For the benefit of others I did find this kit won't run CR1 at auto settings on the UD5 ( the XMP profile sets the CR setting to 2 for memory channels b and c ) If you manually key in the CR setting for b and c, it will run correctly at 1T shaving off some latency.
Reply With Quote


  #3  
Old 10-02-2009, 05:32 PM
RAM GUY's Avatar
RAM GUY RAM GUY is offline
Corsair Product Guru
 
Join Date: Apr 2001
Location: Fremont, CA
Posts: 118,269
POST ID # = 419152
RAM GUY Reputation: 10
Default

You are looking in the SPD tab and that is correct for that part, you need to check in the Memory Tab to see what the system is actually running at.
__________________
Support accounts and tickets can be created at https://support.corsair.com.
Reply With Quote


  #4  
Old 10-06-2009, 09:03 AM
Chickenfeed Chickenfeed is offline
Registered User
Chickenfeed's PC Specs
 
Join Date: Jun 2008
Posts: 4
POST ID # = 419667
Chickenfeed Reputation: 10
Default

That is why I included the everest info as well. For reference sake, CPUZ reports 7-7-7-23. I contacted Gigabyte about this and they are going to look into it but does appear to be an issue with the BIOS and not the dimms themselves so all is well.

I will mention however if I manually key in the timings ( which the XMP profile reports at 7-7-7-20 as it should ) the machine won't boot. If I leave them be, it boots fine. Again I'm still thinking it to be BIOS related. I spoke with one of your technicians last week and that is the conclusion we came to.
Reply With Quote


  #5  
Old 10-08-2009, 11:54 AM
RAM GUY's Avatar
RAM GUY RAM GUY is offline
Corsair Product Guru
 
Join Date: Apr 2001
Location: Fremont, CA
Posts: 118,269
POST ID # = 420083
RAM GUY Reputation: 10
Default

If you set the timings manually you must also set the memory Voltage and CPU VTT Voltage as well or for sure it will not post or run properly.
__________________
Support accounts and tickets can be created at https://support.corsair.com.
Reply With Quote


Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 12:53 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.