F3-12800CL7-2GBRH vs. GA-MA790FXT-UD5P

[rthaney]

I need the voltage and timings for this memory. Right now I have the voltage at default (1.6v I believe) with the timings as follows 8-8-8-24. I have managed to get the timings down to 8-7-7-24. but had to raise voltage up to 1.7v. It is also not very stable like this.

I can run it at 1600Mhz which is better than the Mushkin equivalent I am replacing but can't seem to get the timings as tight as advertised.

Please help and give me all the. recommended timings for this memory

[MadDias]

it?s a bios problem.
i had the same happen on my msi gd70. cl7 was a no go at 1600.
had to wait for a bios update to resolve the incompatibility.

[rthaney]

I hope not

Man, I hope it is not the BIOS. They are already on revision 260,432 and the board is only 8 months old.

I did notice two things but I am not sure it is an issue: Look at my voltages. Some are 40% off

[rthaney]

Forgot relavant info

Forgot the posting rules:

Board: Gigabyte GA-MA790FXT-UD5P
Memory: G.Skill F3-12800CL7-2GBRH
CPU: AMD Phenom II x3 720BE (will be upgrading to 955BE in a day)

[Stu ST200]

I currently have the same motherboard and ram as you do and I can't get it to run at 7-7-7-24-2T @ 1600Mhz either which are the advertised speeds.

As far as I am aware this is a bios issues with this board so for now you will have to use looser timings such as you mentioned 8-7-7-24 .. you should be able to run that at 1600Mhz @ 2T using 1.65v as I am ... although I do suffer the odd BSOD now and again so I have relaxed mine further to 9-9-9-24-2T @ 1600Mhz at 1.65v until a bios update is released to address this issue, if that ever happens.

Stu

[Stu ST200]

By chance I have just checked the Gigabyte website and there has been an F7 bios released which is a new one, only been there a day or so, I'm going to update to that to see if it solves the memory CL7 issue.

Stu

[Stu ST200]

Well I've just updated to the F7 bios and the ram at 7-7-7-24-2T @ 1600Mhz @ 1.65v is still a no go so it's back to 8-7-7-24-2T @ 1600Mhz @1.65v for me and see if this solves the BSOD, if not it will be back to 9-9-9-24-2T @ 1600Mhz @ 1.65v to ensure 100% stability until a bios update addresses this issue, if they ever do that is ...

Stu

[GSKILL TECH]

Should be able to operate 8-8-8-24 @ 1600. Keep us posted on the results.

Thank you
GSKILL SUPPORT

[rthaney]

To GSkill Tech

Can boot at 8-8-8-24 but will crah during prime95

9-8-8-24 are the best stable timmings I can achieve


Tried to address with Gigabyte but their tech forum is worthless. They always blame you for not setting things correctly and they take three days to tell you that.

Maybe the problem is Gigabyte.

[GSKILL TECH]

What voltage? How did 8-7-7-24-2T @ 1600Mhz @1.65v go? You may want to try increasing HT Voltage to see if it is the processor causing the instability. Keep me posted on the results and I will be able to further assist you.

Thank you
GSKILL SUPPORT

[rthaney]

GSkill Tech - You are the man! (I presume)

I bumped my HT voltage 0.2v and I am stable at 8-7-7-24. Here are my voltages and timmings for others.




I am fast as lightning now. AWSOME. Thanks a bunch!

Figures, the memory techs know more about motherboards than the MB manufacturers do.

Glad I came back to G.Skill

[GSKILL TECH]

Fantastic, glad to hear we were able to get it running smoothly. With those timings, it should definitely be fast and operating at full potential.

Either motherboard, memory, or any other computer company, it simply depends whether they care enough about their customers.

We do.

If you have time, please share your G.Skill Support experience and rate it via the poll system. This will help us improve our Customer Service. Thank you!

http://www.gskill.us/forum/showthread.php?t=1093

Thank you for choosing G.Skill
GSKILL SUPPORT

[JZO]

Hi,

Posting rules:
Board: Gigabyte GA-MA790FXT-UD5P (with latest BIOS version)
Memory: G.Skill F3-12800CL7-2GBRH (2 x 2GB)
CPU: AMD Phenom II x4 945 (TDP 95W, HDX945WFGIBOX)

I cannot stabilize the system on 1600MHz memory speed. The memories run with 1333MHz only. I tried several settings in BIOS just published previously by other forum members.
The best settings for 1600 MHz 9-9-9-24-33-1 @ 1.650V, Memtest86 done 3 x 100%, but MemTest (and sometimes any windows parts and other aplications) fails under Windows.

Here are the settings of this scenario:
http://kepfeltoltes.hu/091111/cpuz_w...toltes.hu_.jpg
http://kepfeltoltes.hu/091111/bios_t...toltes.hu_.jpg
http://kepfeltoltes.hu/091111/bios_v...toltes.hu_.jpg

As I wrote, I tried several other timings and voltage settings. These settings are always destabilize the system. The computer (not the op-system) does not start with rthaney's settings (8-7-7-24 with voltages)...

Currently memories run on 1333 MHz, default voltage settings with 9-9-9-24-33-1 timings. This is a stable version.

Does anyone can help me, what can I do for the 1600 MHz speed as tight as advertised?

[GSKILL TECH]

You won't be able to operate CL7 with 1600, so try 8-7-7-24-33-2. Let me know how that goes.

Thank you
GSKILL SUPPORT

[JZO]

These timings look like...

...good: 8-7-7-24-33-2 @ 1333 MHz @ 1.6V

I do not exatly understand why don't operate memory on 1600 MHz? What is the problem?
Why advertised this type of module on 1600 MHz ?

Thanks for your help.