Most high frequency RAM has a lower default BOOT Frequency of 1066 MHz. or 1333 MHz. programmed into the RAM SPD. You must go into the BIOS and set the proper timings, frequency and voltage as listed on your RAM modules/packaging. Then you SAVE the BIOS update and exit.Originally Posted by fxfighter
Motherboard Asus M5A99X EVO
CPU FX-8120
Windows 7
My ram is Corsair DDR-1866 2x4G
not show properly at BIOS.
Inastead, DDR133 was showed.
Please advice.
I think you're misunderstanding the footnote.Originally Posted by fxfighter
http://www.amd.com/us/products/desktop/processors/amdfx/Pages/amdfx-key-architectural-features.aspx
look at note #2 at the bottom.
it say only 1 dimm DDR1866 only, not dual channel memory.
Yes I've read that 1866 supported with 1 DPC (DIMM per Channel) in single memory slot motherboard designsOriginally Posted by fxfighter
http://www.amd.com/us/products/desktop/processors/amdfx/Pages/amdfx-key-architectural-features.aspx
look at note #2 at the bottom.
it say only 1 dimm DDR1866 only, not dual channel memory.
That's not strange. That's totally normal.Originally Posted by fxfighter
Information from CPU-Z
CPU Arch : 1 CPU - 8 Cores - 8 Threads
CPU PSN : AMD FX-8120 Eight-Core Processor
CPU EXT : MMX(+), SSE (1, 2, 3, 3S, 4.1, 4.2, 4A), x86-64, AMD-V, AES, AVX, XOP
CPUID : F.1.2 / Extended : 15.1
CPU Cache : L1 : 4 x 64 / 8 x 16 KB - L2 : 4 x 2048 KB
CPU Cache : L3 : 8192 KB
Core : Zambezi (32 nm) / Stepping : OR-B2
Freq : 1906.52 MHz (200.69 * 9.5)
MB Brand : Asus
MB Model : M5A99X EVO
NB : AMD RD9x0 rev 02
SB : AMD SB910/950 rev 40
GPU Type : AMD Radeon HD 7700 Series
DirectX Version : 11.0
RAM : 8192 MB DDR3 Dual Channel
RAM Speed : 936.5 MHz (3:14) @ 9-10-9-27
Slot 1 : 4096MB (10700)
Slot 1 Manufacturer : Corsair
Slot 2 : 4096MB (10700)
Slot 2 Manufacturer : Corsair
RAM Speed shows 936.5 MHz means DDR3-1866, and Slot 1: 4096MB(10700) means DDR3-1333
Why there is different numbers?
Very strange?
I really would like to see a 30 IBT run with RAM that high on ThubanOriginally Posted by sumitlian
Yes I've read that 1866 supported with 1 DPC (DIMM per Channel) in single memory slot motherboard designs
I think you misunderstood the sentence, It says 1 DIMM Per channel and there are two channels. Each first DIMM slot of both channel will support 1866MHz.
Even Thuban CPU can run 1900-2000Mhz with in 4 DIMM.
rather than doing this, save some money and just set the timings to 1600 mhzOriginally Posted by fxfighter
After i read the reply from AMD, I think of two option.
1. use 1 stick 4GB DDR3-1866.
2. buy another 2x4GB DDR3-1600.
Which way will be better?
He doesn't have to. If you read his cpuz info it's already running at 1873 MHz. His only problem is in realising the support tech misinformed him and in understanding the way cpuz displays information.Originally Posted by thepoopscooper
rather than doing this, save some money and just set the timings to 1600 mhz
It is true however that many people with FX CPUs don't bother buying 1866 MHz. RAM if it is significantly more expensive than 1600 MHz. as there is no tangible system benefit. I personally prefer to run the RAM at least at the default CPU designed frequency and for the FX it is 1866 MHz. If the OP's RAM wouldn't run at 1866 MHz. I would not lose sleep over it though as 1600 MHz. would be fine.Originally Posted by alancsalt
He doesn't have to. If you read his cpuz info it's already running at 1873 MHz. His only problem is in realising the support tech misinformed him and in understanding the way cpuz displays information.
MSI 990FXA GD80Originally Posted by Schmuckley
I really would like to see a 30 IBT run with RAM that high on Thuban![rolleyes.gif]( "rolleyes.gif")
@ fxfighter...Your RAM is running @ 1866
thread=[solved]
yeah, this is my question for now.Originally Posted by alancsalt
He doesn't have to. If you read his cpuz info it's already running at 1873 MHz. His only problem is in realising the support tech misinformed him and in understanding the way cpuz displays information.
