Sign in with
Sign up | Sign in
Your question

PT6 Dexule & Corsair Venegence DDR3 1600 (12 GB)

Last response: in Overclocking
Share
May 21, 2012 5:42:18 PM

Hi,

I tried to over clock my CPU by following this tutorial:

http://www.clunk.org.uk/forums/overclocking/22106-core-...

I was able to achieve 3.36Ghz and to run PRIME95 for an hour with no issues. When I raised the block to 181 and the V-Core to 1.20. I would get the BSOD. I am a little confused by the instructions tho, should I leave my DRAM BUS VOLTAGE at 1.50 and not set it to 1.65? I have the following specs:

-PT6 Dexule
-i920 2.66
-Vengeance Series 12GB DDR3-1600 (PC3-12800) CL9 Triple Channel Desktop Memory Kit (Three 4GB Memory
-GTX 560 Overclocked
-750 Watt power supply

I set my DRAM clock at 9 / 9 / 9 / 24 (this is what it says on the actual ram). I was afraid to increase the DRAM BUS VOLTAGE above 1.50 because it says 1.50 v on the ram itself. Is it safe to increase it to 1.65? Should I leave 9/9/9/24 or increase that as well?

Thanks.
a b } Memory
a c 126 K Overclocking
May 21, 2012 5:53:05 PM

Hi

If the RAM is rated at 1.50V then do not increase it to 1.65V, if your overclocking the CPU then try and leave the RAM at stock values to minimise confusion if there's a problem.

do you have the BSOD code so we can identify the cause of the instability?
m
0
l
May 21, 2012 6:05:34 PM

Hi, no, I did not get the code, but if I get the BSOD again I will note the code.

I made some changes and so far have ran Prime 95 for about 45 mins with no failures;

BLOCK: 181
Multiplier: 100
DRAM Freq: 1451
CPU Voltage: 1.25
QPI/DRAM Voltage: AUTO ???

timing 9 / 9 / 9/ 24

I think I won't increase block to more than 181 as I am getting up to 79 C running Prime95. But, I want to over clock the memory (I bought this memory today specifically because it's decent for overclocking) and wanted some guidance on how to processed. Any suggestions? I can post screen shots as well if that can help.

Found this:
http://www.corsair.com/blog/vengeance_overclocking/

Any help will be appreciated.

Thanks.
m
0
l
Related resources
a b } Memory
a c 126 K Overclocking
May 21, 2012 6:20:27 PM

Hi

With X58 if I remember correctly the memory speed is determined by the following

Base clock x memory Multiplier = memory speed

So increasing your base clock or memory multi will increase the speed of your RAM.

Tightening the RAM timings also has a large effect on memory performance, you may want to try 8-8-8-24 or if the command rate is 2T, changing it to 1T will improve memory performance.
m
0
l
a b } Memory
a b K Overclocking
May 21, 2012 6:50:57 PM

I have the same boards and was able to run both my i7 920's at 3.8G with the cpu voltage at 1.2 without error. You do need to watch the DRAM frequency and may need to drop the multiplier down so that your memory doesn't cause the system to BSOD. What you can do is setup the bios to what you are looking to have for a BCLK and then use memtest86 to see if you get any errors. If you get errors you have to either bump up the memory voltage or slow down the memory speeds. With mine and a memory speed above 1283MHz it would start to error in Memtest86 and I am running 12G ram (4X3G).
m
0
l
May 21, 2012 8:31:50 PM

I have 12G ram (3X4G)

Currently I am running this configuration and it's stable:

block: 181
DRAM Freq: 1451
Vcore: 1.25
dram voltage: auto
Timings: 9/9/9/24

I tried to increase the DRAM to the next freq but the computer would not boot. So I guess the highest I can go is 1451? I have not changed the voltage from the default 1.5 v on the ram. I have my CPU over clocked how I want it. Now I want to use the full capability of my ram, that is the reason I bought this ram.
m
0
l
a b } Memory
a c 126 K Overclocking
May 21, 2012 8:36:17 PM

Well you may need to increase the voltage to regain stability at a higher RAM frequency, though I personally don't think the very small performance boost is worth the risk or effort but its up to you.
I would say anything upto 1.65V would be relatively safe, You may also have to increase the QPI/VTT voltage to gain high RAM frequencies.
m
0
l
May 21, 2012 10:29:55 PM

Rustyy117 said:
Well you may need to increase the voltage to regain stability at a higher RAM frequency, though I personally don't think the very small performance boost is worth the risk or effort but its up to you.
I would say anything upto 1.65V would be relatively safe, You may also have to increase the QPI/VTT voltage to gain high RAM frequencies.


Ok, my main concern was increasing the dram voltage above 1.5V. here is what I am getting with the current setting tho:

3dmark.com/3dmv/4096585
m
0
l
a b } Memory
a c 126 K Overclocking
May 22, 2012 9:49:11 AM

heph224 said:
Ok, my main concern was increasing the dram voltage above 1.5V. here is what I am getting with the current setting tho:

3dmark.com/3dmv/4096585


I take it 3DMark isn't reading the RAM speed correctly (1333Mhz) ?

Have you tried 3DMark11?
m
0
l
Related resources
!