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Twin SSD's and base overclocking

post #1 of 10
Thread Starter 
Hi all.
Not really up to snuff on all my ways around overclocks and HD connections, but I have a situation I'd like to solve before I build my next computer.

I want to up my reference clock on my next build - watercooled a10- to get the memory frequencies high. I have managed to do this on my current llano a8, but that was before I picked up an ssd and added a 160gb x2 raid 0 setup.

I'd like to get the memory at least up to 2400. This is far past the AHCI limit of a baseclock of 108 in my case for the SSD. The bios raid 0 is even less happy with a high ref clock, and doesn't work past 104.
So my previous 3.6ghz cpu and 2500mhz memory is now at 3.0 and 1940.

The twin 160s are kind of old, and won't have room for them anyways, so the plan is to pick up a second ssd and run it in raid 0, if possible. I don't mind picking up a pcie budget raid 0 controller if it will allow a high reference clock, but as I understand it, the pcie also gets overclocked, and so I don't know if this will help at all.

Apparently windows software raid can't do raid 0 on the boot drive, so that option is out. Considering using linux, as my brother knows a way to get it to basically run off raid 0. He's the computer guy of the family, but not really into overclocking much, so he's not run into this issue before.

I am open to software or budget hardware raid setups. I will, as a last resort, run it as JBOD, but preferably not. Getting things like this to work are most of the fun for me, as is the overclocking stuff.

I know my post is kind of all over the place, but I think I got most of the information you'll need to either help me out or tell me I'm out of luck.

Yeroon
post #2 of 10
I don't know your reasons for needing such a high memory clock, but it seems to me that if you settled for the official limit of 1866MHz, the rest of your problems would be solved. With an unlocked Trinity CPU, you could overclock the cores and GPU to whatever you wish and still keep your AHCI and RAID options.

Or you could ditch the AHCI (no more SSD) and RAID by running the SATA ports in IDE mode and use high baseclocks to achieve your overclocks.

My understanding is the ultra-high RAM speeds only made a noticeable difference for the integrated GPU... the performance increase from 1333MHz to 2224MHz ram is less than 5% for the CPU cores. And I don't know if there is any truth to this, but a lot of guys will tell you that low clocks + tight timings is better than high clocks + looser timings on AMD platforms.

You may be right on the PCI-E overclocking thing, but even if the PCI-E bus is unaffected, budget RAID controllers for SSDs probably are not a good idea; I've been told performance won't be nearly as good as a native SATA 3.0 port. Plus the TRIM command doesn't work in RAID, so there's that to consider too.
 
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Wild eyes (2015)
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post #3 of 10
Thread Starter 
Quote:
Originally Posted by MrLinky View Post

I don't know your reasons for needing such a high memory clock, but it seems to me that if you settled for the official limit of 1866MHz, the rest of your problems would be solved. With an unlocked Trinity CPU, you could overclock the cores and GPU to whatever you wish and still keep your AHCI and RAID options.

I would really like to get my memory high to help the gpu out, even with the BE chip. Its just that way I can push the other components farther. I know it would make life easy but I'd also know I'm missing out on more performance.
Quote:
Originally Posted by MrLinky View Post

Or you could ditch the AHCI (no more SSD) and RAID by running the SATA ports in IDE mode and use high baseclocks to achieve your overclocks.

Raid mode in my current setup defaults to ahci for all drives. I would rather stop using the old ide drives then stop using the SSD. I will use ide mode SSD x2 and just get it partitioned as a boot/main drive if i have to, but I am hoping for a solution to get both together as raid.

Quote:
Originally Posted by MrLinky View Post

My understanding is the ultra-high RAM speeds only made a noticeable difference for the integrated GPU... the performance increase from 1333MHz to 2224MHz ram is less than 5% for the CPU cores. And I don't know if there is any truth to this, but a lot of guys will tell you that low clocks + tight timings is better than high clocks + looser timings on AMD platforms.

Yes. I want to clocks for the gpu, and the cpu does like tighter timings more then really high frequency. Your percentage is off for the gpu's though, theres a bigger gain just from 1333 to 1866 then 5%, let alone 2133 and 2400
http://www.tomshardware.com/reviews/a10-5800k-a8-5600k-a6-5400k,3224-5.html
Quote:
Originally Posted by MrLinky View Post

You may be right on the PCI-E overclocking thing, but even if the PCI-E bus is unaffected, budget RAID controllers for SSDs probably are not a good idea; I've been told performance won't be nearly as good as a native SATA 3.0 port. Plus the TRIM command doesn't work in RAID, so there's that to consider too.

I take it windows TRIM commands don't work on a raid setup as well?
post #4 of 10
Quote:
I take it windows TRIM commands don't work on a raid setup as well?
TRIM only works in RAID 0 with Intel 7 series motherboards (not x79 yet, newer driver to be released soon) with the latest IRST driver. Otherwise no TRIM for your RAID array.
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post #5 of 10
Thread Starter 
Quote:
Originally Posted by Sean Webster View Post

TRIM only works in RAID 0 with Intel 7 series motherboards (not x79 yet, newer driver to be released soon) with the latest IRST driver. Otherwise no TRIM for your RAID array.

Ok, thanks. I guess I'll have to do the linux software raid setup if i still want to go this route, as it supposedly has the option to 'discard' even with a raid setup.

Yeroon
post #6 of 10
Quote:
Originally Posted by MrLinky View Post

... the performance increase from 1333MHz to 2224MHz ram is less than 5% for the CPU cores.
The performance difference for the GPU is noticeable, but the performance change for the cores is less than 5%.

It does seem odd that you need uncompromising GPU performance, but are willing to run Linux. You won't be able to do much gaming outside of Windows, and if you need it for GPGPU work, you would be much better off with a cheaper CPU and discrete GPU.
 
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post #7 of 10
Thread Starter 
Maybe it sounds retarded. It probably is retarded. But I want the fast ram speeds to get fast ram speeds. And I'll overclock the crap out of the cpu and gpu for the same reason. Then I will let it sit and fold/boinc whilst i browse the internet and play with a 3d modeling program. If its a semi-simple one in linux, ok with me, I don't use most of autodesk inventor anyways.
I'm having fun building and making this as fast as possible with what I have. I like to make my ideas work. Sometimes they don't. I technically don't even need a new computer, this llano is doing it great and its not even overclocked (thanks raid/ahci). But, I have some disposable income and this way ends up helping more people (overclocking trinity) then if I just picked up a new game. I also learn more about all this computer stuff as I'm fairly new to it.
I enjoy overclocking. The llano was a blast tweaking it until my bios ran out of allowable baseclock. Got some pretty decent scores for an m-itx - locked llano build too.
So I don't really need to figure this out. But I want to, and I appreciate all the assistance in a field I know very little about.
So thank you for the help so far, even if its doesn't have the result I'm looking for.

Yeroon
post #8 of 10
If you want more help on overclocking the RAID section here is not the place to post.

This is: http://www.overclock.net/f/9/amd

You will get a lot more help there.
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post #9 of 10
Thread Starter 
lol I'm there a lot. But this isn't so much an overclock only problem, its the raid doesn't like to overclock. We've both agreed the easiest way to deal with this is ide mode with no raid. The problem is gone. But I want more then just the high overclock, I was hoping for a solution to keep the raid and the overclocking ability. Maybe there isn't one, but i wasn't going to just give up and not look for a solution.

Yeroon
post #10 of 10
Unless you will be Folding on the GPU, or your 3D modeling program is fully hardware accelerated, I still don't see the need for all-out RAM overclocks. But I do understand the joy of "going off the beaten path" when it comes to overclocking and tweaking, and I admire your not giving up so easily. But as the saying goes, "Good food, cheap and fast. Choose two". Sometimes you simply can't have it all.

Well, you've probably heard enough nay-saying from me by now, so I'll shut up now biggrin.gif. If you do find some solution, post it up (heck, I'd love to run 2133MHz RAM and keep AHCI), but I've run out of ideas. Best of luck, sir.
 
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Wild eyes (2015)
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