Properly setting my Memory Clock Speed

[WeeDawg]

A year ago I built my first PC. Specs below:

AMD FX-8120 3.1Ghz

Gigabyte 990FXA-UD3 (BIOS Version F9)

G. Skill Ripjaws DDR3 1600 16GB (4 x 4) Link

Sapphire ATI HD 7850oc (Gen 1)

Plextor 128GB SSD (boot Drive)

Kingston HyperX 240GB (Games Drive)

Windows 7 Ultimate

I'm loving my system, however I've had two small problems. One being the stock CPU fan which is uber loud, but that's for another thread. The other problem is my memory. The mobo defaults to 1333 speeds and everything runs fine, but as soon as I change it to 1600 the PC will run fine for 5 to 10 minutes and then either freeze or it just auto reboots. Now I have an average understanding of computers, but this shouldn't be this hard. I've referred to G.Skill website for the proper timings, no luck. I've used CPU-Z's recommendations, no luck. I've ran Memtest 86 a couple of times with no errors. I've ran Prime95, no problems she runs stable until I change the clock speed. Maybe I'm not changing the right stuff in my BIOS. Here's what my BIOS is current running and the things I have changed, also there is a Spd line that I'll include that has different numbers, is that what I should change it too?:

[TABLE=width: 500]

[TR]

[TD]

DESCRIPTION[/TD]

[TD]

DEFAULT[/TD]

[TD]

SPD[/TD]

[TD]

GSKIL RECOMEND[/TD]

[/TR]

[TR]

[TD]

Clock Speed[/TD]

[TD]

1333[/TD]

[TD]

---[/TD]

[TD]

1600[/TD]

[/TR]

[TR]

[TD]

DCT Mode[/TD]

[TD]

Ungagged[/TD]

[TD]

---[/TD]

[TD]

Ungagged[/TD]

[/TR]

[TR]

[TD]

1T/2T Command Timing[/TD]

[TD]

2T[/TD]

[TD]

2T[/TD]

[TD]

2T[/TD]

[/TR]

[TR]

[TD]

CAS# Latency[/TD]

[TD]

9T[/TD]

[TD]

11T[/TD]

[TD]

9T[/TD]

[/TR]

[TR]

[TD]

RAS To CAS R/W Delay[/TD]

[TD]

9T[/TD]

[TD]

11T[/TD]

[TD]

9T[/TD]

[/TR]

[TR]

[TD]

Row Precharge Time[/TD]

[TD]

9T[/TD]

[TD]

11T[/TD]

[TD]

9T[/TD]

[/TR]

[TR]

[TD]

Min. RAS Active Time[/TD]

[TD]

24T[/TD]

[TD]

28T[/TD]

[TD]

24T[/TD]

[/TR]

[TR]

[TD]

TwTr Command Delay[/TD]

[TD]

5T[/TD]

[TD]

6T[/TD]

[TD]

5T[/TD]

[/TR]

[TR]

[TD]

Trfc0 DIMM 1, DIMM 3[/TD]

[TD]

160ns[/TD]

[TD]

160ns[/TD]

[TD]

160ns[/TD]

[/TR]

[TR]

[TD]

Trfc1 DIMM 2, DIMM 4[/TD]

[TD]

160ns[/TD]

[TD]

160ns[/TD]

[TD]

160ns[/TD]

[/TR]

[TR]

[TD]

Write Recovery Time[/TD]

[TD]

10T[/TD]

[TD]

12T[/TD]

[TD]

10T[/TD]

[/TR]

[TR]

[TD]

Precharge Time[/TD]

[TD]

5T[/TD]

[TD]

6T[/TD]

[TD]

5T[/TD]

[/TR]

[TR]

[TD]

Row Cycle Time[/TD]

[TD]

33T[/TD]

[TD]

39T[/TD]

[TD]

33T[/TD]

[/TR]

[TR]

[TD]

RAS To RAS Delay[/TD]

[TD]

4T[/TD]

[TD]

5T[/TD]

[TD]

4T[/TD]

[/TR]

[TR]

[TD]

Voltage[/TD]

[TD]

1.5[/TD]

[TD]

1.5[/TD]

[TD]

1.5[/TD]

[/TR]

[/TABLE]

Hopefully I've included everything, I tried to be as complete as possible to resolve my issue. If someone needs more details just let me know what that is, and as always thanks for any input.

[andi1455]

Trie to increase the voltage a little bit.

Maybe then it will run stabel :)

[Pyromaniacc]

You could try increasing the CPU-NB voltage a notch or 2 and see if that will help.

[Salmiakbal]

Try it with 2 DIMMS installed

[Chris_nz]

Try it with 2 DIMMS installed

i agree try 2 Dimms, it could be a faulty Ram stick.