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Getting to 1600

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June 4, 2010 5:18:45 AM

Problem: I was setting my RAM (OCZ3BE1600C8LV4GK) on my Motherboard (GA-790XTA-UD4) to it's values printed on the RAM and on the OCZ website (8-8-8-24 @ 1600 @ 1.65v) but Windows 7 (64 Bit) does not like it. I am wanting to usie this setting as the Motherboard originally put it to (11-11-11-30 @ 1066 @ 1.5v). From what I understand, it should work fine. The BIOS display and starts loading windows, gets to the point on the loading screen where the 4 colours that make up the windows logo are just about to touch then freezes. Runs fine at Auto Values (11-11-11-30 @ 1066 @ 1.5v).

I have read putting the voltage slightly above 1.65 would help but when I put it to 1.675, weird lines came up on the screen where the computer freezes in the startup. I have a Phenom II 965 BE running stock at the moment. I tried using AOD to use BE Memory Profiles but the option is greyed out (Motherboard does support AOD though).

If you need more information, ask me. :) 

I originally tried just increasing the Mhz but the BIOS would not load until I changed the timings aswell. I have found another site which suggested to do this:

"Set System Voltage Control to {Manual}
Set DRAM Voltage COntrol to {1.65 volts}
Set CPU NB VID Control to {1.35 volts}

Set memory Clock to {Manual} and {X8.00}
Set DCTs Mode to {Unganged}
Set DDR3 Timing Items to {Manual}
Set Memory Timings to CL 8-8-8-24 (CL-TRCD-TRP-TRAS)
Set 1T/2T Command Timing to {2T}
"

But it did not work. No other parts are overclocked on the Motherboard. Also, not sure if this is the best place to put this thread so if its in the wrong spot, sorry. :( 

More about : 1600

a b } Memory
a b V Motherboard
a c 100 K Overclocking
June 4, 2010 6:56:06 AM

Hmm sounds like you might have a bad stick or something... Maybe first try running at 1600 CL9. But those auto values are super high for sticks that should be 1600 CL8. Might just be your mobo being funny but my 1600mhz CL8 ram was defaulted at 1333mhz CL7 I believe maybe CL8... CL11 is super duper high.

Memtest86+ is a great program for finding bad RAM.
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June 4, 2010 7:48:05 AM

So should I put the RAM to the unstable (8-8-8-24 @ 1600 @ 1.65v) then test with Memtest86+ or the values you said (CL9)? Also, when you say "CL9" do you mean (9-9-9-24) as I haven't heard of that terminology before?
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Related resources
June 5, 2010 5:15:50 AM

The memory support list contains RAM with 1600 mhz though it doesn't contain my specific RAM. This may be due to when the memory list was updated.

I have some progress, I have it currently running stable with (9-9-9-30 @ 1333 @ 1.65v). I tried running it at 1600 with those timings but to no avail. Do you think I would get a good performance increase if I could find 1600mhz stable at 10+ timings or would it be slower?

I will see if upgrading my BIOS from F2 to F3 will help (though the Gigabyte site recommends against upgrading BIOS if nothing is wrong)
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June 5, 2010 10:07:12 AM

Ok, I have upgraded my BIOS and tried what I said but still doesn't work.
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June 6, 2010 6:02:41 AM

I did try what Wolfram23 suggested and am about to try what you suggested. I couldn't straight away as I had to do other Uni work on my computer so I needed it to work.

What timings should I try when in DIMM 3 & 4, all of them or just cycle from 8-8-8-24 to 10-10-10-30?
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a b } Memory
a b V Motherboard
a c 100 K Overclocking
June 6, 2010 6:12:01 AM

smart_monkey said:
I did try what Wolfram23 suggested and am about to try what you suggested. I couldn't straight away as I had to do other Uni work on my computer so I needed it to work.

What timings should I try when in DIMM 3 & 4, all of them or just cycle from 8-8-8-24 to 10-10-10-30?

Start with 8-8-8-24 then 9-9-9-27 then 10-10-10-30. If it works at 10-10-10-30 for example, you could then try 10-10-9-29 or 10-10-9-28. Then maybe see if 10-9-9-28 or 10-9-9-27 work. Just fyi the last number is generally the previous three added up +/- 1 so there's alittle room to play. The first two of the numbers have the biggest affect on speed and stability. You should also probably keep all the advanced timings on auto.
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June 6, 2010 7:22:47 AM

Ok, I put the RAM in DIMM 3 & 4 and cycled through all the timings from 8-8-8-24 to 12-12-12-30 as that is as far as my motherboard will let me set it.

11-11-11-30 was the most successful at 1600 as it got the furthest through the Windows 7 loading screen. I am beginning to wonder if it is possible now.

Should I mess with the voltage or just message Gigabyte?
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a b } Memory
a b V Motherboard
a c 100 K Overclocking
June 6, 2010 8:12:39 AM

Hard to say if it's the RAM or the mobo... but that's pretty odd and I have to think it's actually the RAM.
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a b K Overclocking
June 6, 2010 4:50:59 PM

I would try putting a bit more voltage on the CPU-NB, like 1.4v. Then run the sticks at their advertised settings and give it a shot.
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June 10, 2010 6:07:25 AM

Ok, I tried putting putting the CPU-NB to 1.4 with the RAM settings but didn't even get to the Windows loading screen.

Also, I contacted Gigabyte and they said to ask OCZ for all of the RAM timings, not just the standard 4. I haven't done that yet as I am a bit busy but when I do I will get back to you guys.
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