Originally Posted by firelink
I was wondering if anyone can help me:
I am having trouble getting my 1055t up to 4GHz. I've followed many guides on the subject and cannot seem to find any solutions.
8GB (2x4GB) DDR3 Corsair Vengeance C9 (9-9-9-24 @ 1600MHz)
EVGA nVidia GTX 560 on Ti
GA 970a-UD3 mobo
and of course, AMD 1055t 125W
My issue seems to be RAM related. I've tested it and it's come up with no errors, but for some reason, I cannot reach 4GHz with two DIMMS installed. If I take out one of my 4GB chips I can get up to 4GHz easily, but with both, it seems like something strange is happening.
My current highest is 3.99GHz, but it BSODs as soon as it starts with a random assortment of errors ranging from Page Fault in Nonpaged Area to System Service Exception to Memory Management. If I try 4GHz it won't even post. I've even tried running my RAM @ around 1140MHz with 10-10-10-24 timings.
If it helps, I noticed my mobo has extreme LLC. It won't even let you turn it off (only "Regular" and "Extreme" or "Auto"). I have not had to touch the voltage on the CPU because it goes up to 1.47v by itself due to the LLC.
Can't really rely on Memtest for memory stability on AMD systems. It'll test for max overclock sure, but AMD relies so much on NB when it comes to memory, that it's better to find stability with memory using Blend test on Prime or whatever alternative you're using.
Personally I think the timings are off too. On mine the recommended timings for 1866mhz is 9-11-9-27 so CL of 9 for 1600 seems pretty loose (to me anyways). Look at the SPD tab in CPU-Z to get an idea of where the timings should be for each of the speeds. It helps me tremendously with my RAM to know where the timings are using that SPD tab as a reference.
Also you said you haven't touched the voltage yet but it goes up to 1.47v by itself causes instability too. Try to manually set the voltage and play with each of the LLC settings to see if it improves. On my system if I can keep it as close to the setting as possible, the more improved the stability is.
What is the NB and HT speed also? I usually try to have mine at about 2800 with 1.3v and HT close to 1800 as possible with auto voltage setting and it always seems to do well.