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post #71 of 106
Quote:
Originally Posted by ovawe View Post

Have you had any luck yet with 1866 on the motherboard and CPU combo?

With timings have used? Thanks

I built the system yesterday and I have got to say that this is the first APU build I have done and I was very impressed with the speed of the system,

This build was for a friend so I didn't have much time to play with the ram but with a bit of work I managed to get 1866 9-10-10-28 1T @ 1.4V stable, it did take quite a lot of messing to get this and probably with a bit more work i could have got faster. I haven't got any screen shots as my friend wanted to take the system.
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post #72 of 106
I have an important question:

What is everyone using to determine stability?
Just IBT or Prime?
High memory usage, of course,
but is anyone else running their clocks and timings through MemTest over 200%..?

I'm just wondering,
cause some of the clocks and timings I see posted are seemingly just out of my reach,
but I'm not considering passing IBT as completely stable,
since MemTest can still see errors.

Can run 7-7-7-18-2t @ 1.65v,
and the 90ns thing helped (smile.gif),
but not completely stable,
and odd behavior at times (no crash, though...).

I've got 2200Mhz 11-11-11-28-2t @ 1.57v completely stable.
275% run through MemTestPro with no errors. Have a screeny if needed.
Did that for the iGPU of my 3870K. 35.2GB/s of bandwidth is pretty sweet for an IGP. thumb.gif

I know 2400Mhz isn't stable enough with 1.65v 11-11-11-28.
11-11-11-30 helps a little it seems, but anything higher fails to post.... (?)
I'm guessing with my current settings and 1.65v my limit is around 2300Mhz,
but I haven't confirmed yet.

I am still pretty new to tweaking RAM.
Can anyone give me any tips on stabilizing high memory clock?
Especially great to hear from one of the few-and-far-between Llano experts.
Already gave a voltage bump to what is, from what I read, the memory controller.
Not sure how much higher I should rightfully raise the "APU 1.2v" setting.
It turns yellow after 1.25v in my F1A75-M Pro BIOS.... (scary...! lol)
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post #73 of 106
I use both IBT and Prime95. I run between 20-50 IBT tests and then Prime is 24 hours. Any errors in either one of those and there is something wrong with the OC.

MemTest isn't really for stability. Normally you use it to find defunct RAM.
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post #74 of 106
8320 on a Gigabyte 970A-UD3. I'm not sure if I like this RAM. It seems to be really quirky stuff.

I can't seem to get this RAM to stay stable in Prime95 blend for more than 2 minutes at 1866, with any timings at all. What's the deal?!

at 9-9-9-24-2T, it seems to be okay with 1.5v. I've even tried 1600 cl8 at 1.5v I think it was, which worked well for a while before I clocked it down to push the CPU some. Anyone running 1866+ at CL9?

Also, what is this 90ns thing people are referring to? Changing the trfc to 90ns from 160?
Edited by breakfromyou - 1/26/13 at 9:56am
post #75 of 106
Well, HCI MemTest has definitely won me over.
Ran 20 hogh on IBT ok,
then a few minutes of MemTest showed errors.

I heard of it when I stunbled across this...

http://forums.anandtech.com/showpost.php?s=2cad632b9d54be822fb216481282cefc&p=32341719&postcount=1


The 90ns comment I made was due to the guy who posted on the last page.
He said he had 7-7-7-18-1t 90ns stable on 1.5v.
I tried 7-7-7-18-1t and couldn't even post.
Switched from 160ns to 90ns, and could even run Windows without crashing.

Moral of the story is:
I'm still learning about the deeper details of RAM timings,
and that was neat to find out.
I assume the tighter trfc helps accomodate the overall tighter timings.
I am, obviously, not completely sure of the details,
but that's what I can say about it. smile.gif

BTW - I haven't done thorough testing,
but 9-9-9-24-1t seemed fine @ 2000Mhz for me.
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post #77 of 106
This RAM makes no sense. I need to learn what it likes and what it doesn't like. Why is 8-8-8-24-2T unstable at 1600?!?! It was before! Subtimings, of course!

I'm basically wondering how to handle timings and subtimings on an AMD based system. I am nowhere near figuring out what this RAM likes.
post #78 of 106
O_O im reading this thread and i cannot belive that those rams are not available in europe. It makes me sad :C also they remind me of gskill eco series that also overclocked like mad.
post #79 of 106
Quote:
Originally Posted by Jahocowi View Post

Are these the Samsung RAM everyone's been talking about recently?

Samsung DDR3 RAM

No. It is NOT!
Here's the real thing: http://www.newegg.com/Product/Product.aspx?Item=N82E16820147096
I've been looking for this memory almost a year at e-tailers all over the world and can't find any.
As far as I can tell it is no longer made.
Notice the black pcb? The designation is also MV-3V4G3D/US.
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post #80 of 106
Quote:
Originally Posted by kzinti1 View Post

No. It is NOT!
Here's the real thing: http://www.newegg.com/Product/Product.aspx?Item=N82E16820147096
I've been looking for this memory almost a year at e-tailers all over the world and can't find any.
As far as I can tell it is no longer made.
Notice the black pcb? The designation is also MV-3V4G3D/US.

Newegg must have changed the product page. That is not the RAM I originally linked to.
Edited by Jahocowi - 6/8/13 at 12:03pm
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