G.skill sniper 1866 speed

[minix69]

I recently bought some g.skill sniper 1866 mhz ram but it only runs at 1600 via cpuz, how can I get this to full speed.
System
Phenom IIx6 1100t
asus m4a89td pro usb 3.o
CF 5870's
samsung spinpoint 7200 rpm 500gb hard drive
650w xfx modular psu
windows 7 pro

My timings are set to factory 9,10,9,28

 

[minix69]

forgot to add the ram is G.Skill sniper 1866 mhz 16gb(4x4gb) ddr3

 

[minix69]

anyone?

 

[clarkjd]

1866 is considered overclocked, A lot of people have problems trying to overclock 4 sticks of memory, even if they are 4 of the same sticks. Also, looking at the specifications of the motherboard, 1866 is not listed as being supported. it likes either 1600 or 2000(OC).

 

[minix69]

I seen that I just figured 2000 oc i might be able to run in between at 1866

 

[minix69]

what might it take to OC this ram to 2000?

 

[ozanuyan]

If you overclock and already overclocked ram you risk burning/melting your RAMs and/or your motherboard. I wouldn't suggest it but then again I don't have deep knowledge on the issue.

 

[jaquith]

Raise your FSB Frequency, start with 240 MHz and continue to go up until something close or exact is a option. If 2000 MHz is 'it' then still use a FSB of 240+ MHz and 2000 MHz DDR3. Also, this will cause your CPU to OC. OC the RAM will require at least a DRAM Voltage increase and probably a QPI/VTT/VCCIO Voltage increase at minimum.

edit: the 'Sandy Bridge' RAM offers different Frequencies than your AMD or prior Intel CPUs; your supported are: 2000(O.C.)/1600/1333/1066 MHz. I realize 1866 is a selectable option, but I too understand stability.

AMD 1100t
3300 / 200 = '16.5'
3300 / 240 = '13.75' or 14

14 * 240 = 3.36GHz
17 * 240 = 4.08GHz and will require a vCore ~1.5v and really good HSF.

Math problem:
1600/200 = 1866/X ; X = 233
The problem with 233 MHz is the it's typically not enough FSB for 1800+ {1866} MHz to run properly. The next near whole number >240 MHz is 269 MHz (269 X 7 = 1883 MHz). 1866/240 = 7.8 or 8 X 240 = 1920 MHz.

Whereas 'AMD' RAM Frequencies:
2000 MHz, 1800 MHz, 1600 MHz ALL are easily divisible by the FSB of 200 MHz (10, 9, 8) respectably.

You can try the following:
AI Overclocker Tuner -> DOCP ; FSB OC
DRAM OC Profile -> DDR3-1866 MHz
DRAM Voltage -> (spec) or +0.10v~+0.15v
DRAM Timing Control /Enter
Set the CAS timings per 'XMP-1866' as listed in CPU-z
//You may need to increase the NB Voltage if unstable//

BTW - use CPU-z to see the available JEDEC/XMP {XMP 'feature is not supported on AMD} Frequencies/CAS/Voltage supported by your Ripjaws X:

 

[minix69]

Well its working I adjusted those and its acually running at 1926 mhz somehow seems stable so far, the only concern i had was the TRC only went to 41 and cpu-z said 42 will that make a difference?

 

[jaquith]

Ignore tRC.

 

[minix69]

should i leave it on auto then? I noticed something else though my ram was higher but my cpu went down?

 

[minix69]

Best answer selected by minix69.

 

[jaquith]

Correct leave other CAS Timings as 'Auto'. The only CAS Timings to touch are (CAS-TRCD-TRP-TRAS & CMD) e.g. 8-8-8-24-2N leave the rest alone If the Command Rate is set to 1N {1T same thing} and you're having errors then use 2N which is best in most instances >= 1600 MHz.

Next run Memtest86+ for 2~4 passes, 8GB is best overnight take a long time, create a bootable CD/DVD, use the ISO/zip file -> http://www.memtest.org/

Good Luck!

 

[minix69]

Ok I ran memtest and it went fine for the first handful of passes, then after ten or so I got tones of errors? any idea what I might be doing wrong?

 

[jaquith]

If no errors for (9) Passes and you're first seeing errors in the 10th Pass - 9/10 RAM was running too hot; 4 passes is considered good.

If running F3-14900CL9D-8GBSR 1866 MHz 9-10-9-28 @ 1.50v you could relax the CAS by going 10-10-10-(28~30) OR RAM Fan OR DRAM Voltage -> +0.10v.

Otherwise, after 9 Good passes IMO it's nothing to worry about, you'd need to be Gaming or Rendering just as long to replicate the 'strain' on the RAM, but the above three choices will lower the error rate.

 

[minix69]

I might look into a memory fan, it only takes like a half hour to get to those passes, and also I'll try those settings and get back to u! Thanks a million!

 

[jaquith]

Let me know, we'll figure it out. There are more obscure settings to try if needed, but it's very 'trial by error.'

 

[minix69]

Ok I played with some settings and I'm getting errors at test 7? i adjusted the cas from 9,11,9,29 to 10,10,10,29, and keeping my ram at 1.5v?

 

[minix69]

Think I have a g.skill fan found as well

 

[jaquith]

Up the CPU/NB Voltage -> 1.25v~1.35v ; start with 1.35v if error free then 1.30v etc until the lowest error free is found.

I assume you upped the DRAM Voltage ; DRAM Voltage -> (spec) or +0.10v~+0.15v

IMO - on current AMD {non-Bulldozer}, Intel LGA 1156 or LGA 1366 CPUs High Frequency yet low DRAM Voltage RAM don't make good company; DRAM Frequencies > 1333 MHz use 1.65v RAM.

The next step is to try a post at G.SKILL -> http://www.gskill.us/forum/

 

[minix69]

gonna give this a try right now and my timings are 9-11-9-29 as per cupz again! my coolers in the mail as well get right back to u.

 

[jaquith]

If you're manually setting the CAS Timings in the BIOS and the BIOS is 'forgetting':
1. Post Failure increased the CAS to a 'safe' number.
2. Bad CMOS Battery
3. You are running some 'crapware' that's BIOS invasive and is overwriting your entries e.g. ASUS TurboV EVO, AMD OverDrive Utility, ASUS Ai Suite, etc.

Do you think that I use a 'Utility' to OC? Do you know why I don't?

Spoiler

...because I don't want an App F'ing with my settings It's really simple to OC and there's no need to have an App do it for you & you can do it better. -- Uninstall those Apps!

 

[minix69]

i havent installed any of those programs and the bios is staying as i set it, though sometimes when I change voltage the numbers turn yellow or green as a warning. I set those back myself

 

[minix69]

red not green sorry

 

[jaquith]

There's a few ways to skin a cat, let's try simply OC the FSB manually. You may need to play with both the CPU Bus Frequency & CPU Ratio to get a DRAM Frequency that will work. You wanted fast RAM now you get to have some fun with it and join the club of OC'ing.

AI Overclocker Tuner -> Manual
CPU Bus Frequency -> 240 MHz (try 233 MHz the CPU will be slightly under clocked 3.26GHz)
CPU Ratio -> 14
DRAM Frequency -> DDR3-1866 MHz {closet value; note 'Math Problem' above}
DRAM Voltage -> (spec) or +0.10v
CPU/NB Voltage -> (spec) or 1.25v~1.35v
DRAM Timing Control /Enter
Set the CAS timings per 'XMP-1866' as listed in CPU-z
//You may need to increase the NB Voltage if unstable//