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GA-890GPA-UD3H and AMD Phenom II X6 1055T overclock

post #1 of 31
Thread Starter 
I have a rev2.1 GA-890GPA-UD3H with the latest BIOS (FGf).
This is the AM3 model unfortunately,, not AM3+ so no Bulldozer for me.

The only upgrade CPU available for this system appears to be the 1100T and it's becoming difficult to get and costs about $200, which is hard to justify for just an 18% clock speed increase.

So, I'm looking to OC my 1055T. I am not having much luck.

The RAM is Corsair 4x4 GB, model CMZ16GX3M4A1600C9 .
I am only able to run the RAM at 1333 speed. If I change the RAM multiplier from 6.66x to 8x, the board won't POST - it just complains about overclocking and then reverts to normal.

The best I have been able to do is change the bus from 200 to 210 which is rather pathetic, only 5% increase frown.gif.
With the case open, I can run the bus at 235 and a few minutes video encoding tests seem stable.
With the case close, it crashes right away.

The case - a very nice Lian-Li PC-60 that has survived 12 years of various upgrades (it first hosted a dual Athlon MP) - won't accept larger fans from hydro coolers. I just bought a Corsair H80 at fry's and will return it tomorrow. The fan cannot be mounted. The fan is 120x120mm and the max that would fit would be 80x80 :-(

I know there have been threads on this exact mobo & CPU combo before, though not the same RAM.
But the final BIOS settings were never posted.

Any help would be appreciated. If I could run this baby at 4 GHz instead of 2.8 then I would be fairly happy.
Otherwise I might have to bite the bullet and build another system with new case/mobo/CPU :-(

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post #2 of 31
To start you should be able to O.C. on that board a bit, keeping in mind it listed as a 4+1 phase board.

When you changing your ram speed are you adding any v's needed? 1333 is a safety default for AMD's.

By the sound of it you are trying this on a stock cooler, not a good idea devil.gif

Either get a better cooler, or mod. your case.

If anything, only look at a new case, something that will support at least 1x120mm on top. Your CPU is ok, and the board is not that bad, but if wanted a new board would make your life easier wink.gif
post #3 of 31
Thread Starter 
Hi,
Quote:
Originally Posted by ginger_nuts View Post

To start you should be able to O.C. on that board a bit, keeping in mind it listed as a 4+1 phase board.

OK, that's good to know!
Quote:
When you changing your ram speed are you adding any v's needed? 1333 is a safety default for AMD's.

Which V's specifically should I change ?
Quote:
By the sound of it you are trying this on a stock cooler, not a good idea devil.gif

Yes, it's a stock cooler, since I couldn't fit the alternate H80 cooler.
Quote:
Either get a better cooler, or mod. your case.

Are there any better coolers that have an 80mm form factor ?
I do not see how the case could be modded to accept a larger cooler, there simply isn't enough space on the backplate, a 120mm fan would go down into the motherboard ATX plate. In the other direction there is 120mm.
The cover is already modded with a window, so I can't mod it to put the cooler there.
Moving to another case is a pain, I would only do it if I can manage OC to 4 GHz.
Shouldn't I be able to do that with the right settings and the case open ? If so; then I would consider new case/new cooler.
post #4 of 31
Not to sure for your BIOS, but look in Advanced settings under the ramm settings, or at the bottom, there might be a listing of voltages, pretty sure default is 1.5v, try upping it. But no more then 1.65v absolute.

OC on a stock cooler with AMD is near lethal, Cooler Master Hyper 212 is a good budget cooler, for more details do the obvious google searches, I personaly like Hardware Secrets.

Arctic cooling do a 80mm cooler, but your options are going to be limited, and I am not to sure how good of a cooler you will get restricting yourself to 80mm.

A good guide to follow is
follow this guide
post #5 of 31
I think you have to up your cpu/nb (to get it to post with 1600mhz ram), since you're using 4 sticks of ram. Your ram is rated at 1600mhz 1.5v, so you don't have to change the dram voltage.
post #6 of 31
Thread Starter 
No luck so far running the memory at 1600.
With the CPU host clock at 200 and the x8 memory multiplier I tried :

- CPU NB VID control +0.2V
- CPU NB VID control +.0.375V

No POST, just a message that "the system has experienced boot failures because of overclocking"..

If I overclock the CPU clock, I probably wouldn't want to use the x8 multiplier anyway as the memory speed would be way over 1600.

When I had the CPU host clock at 235, the memory was at 1566 . Everything seemed to run OK, but with case open only.
I was not able to push it past that, at 240 the board would POST, but Windows would BSOD during boot.
post #7 of 31
I mean the cpu/nb frequency also, to 2400/2600mhz+.
Put the cpu/nb multiplier to 12/13ish to do that ^ and you can keep those cpu/nb voltages you put before (try to keep cpu/nb below 1.375 or so).
post #8 of 31
Thread Starter 
auraofjason,
Quote:
Originally Posted by auraofjason View Post

I mean the cpu/nb frequency also, to 2400/2600mhz+.
Put the cpu/nb multiplier to 12/13ish to do that ^ and you can keep those cpu/nb voltages you put before (try to keep cpu/nb below 1.375 or so).


Under CPU NorthBridge Freq., the multipliers only go frmo x5 to x10 . No x12 or x13 frown.gif
post #9 of 31
Oh I didn't know even the cpu/nb multiplier was locked in non black edition cpus too.
You should probably just look at this then, they'll probably explain things much better than me: http://www.overclock.net/t/720502/the-1055t-owners-club
post #10 of 31
as yopu rasie the host lower your ram keep it around 1550
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