X48 Rampage Formula Preview.

[leo27]

Consider this the SCREAM!!!!!!!!!!!!

On another note are there any memory timings in our Bios that are better higher rather than lower (i.e like how tREF gives more performance at 16383t rather then 3120t)

[Alien Grey]

Consider this the SCREAM!!!!!!!!!!!!

On another note are there any memory timings in our Bios that are better higher rather than lower (i.e like how tREF gives more performance at 16383t rather then 3120t)

I asked them when we could expect the new BIOS.


There are no other timings.

[Fritz_the_germ]

Consider this the SCREAM!!!!!!!!!!!!

On another note are there any memory timings in our Bios that are better higher rather than lower (i.e like how tREF gives more performance at 16383t rather then 3120t)

The only BIOS I remember that calculated the tREFs at 16,383T was the 0308 version.
It´s right that the memory performance increases by increasing the tREFs. But you shouldn´t forget that you are loosing stability because your memory needs refreshing after a while or your systems breaks down all of a sudden. The more often your memory gets the "refreshing" the better the datas will stay complete to work. Condenser memorychips need a refreshing after a while or they "forget".
The longer your memory won´t get a refreshing the higher is the risk that the memory will "forget" the stored datas.
That´s why the 16,383T should be used for benching - but not for the 24/7 use. Gaining stability a tRFEs value of 2,600T is even better.

[Swiguy]

Hello all,

I've recently attempted to OC my system using the 0902 BIOS but I wasn't able to get a stable OC at all. I've flashed my BIOS back to 0803 and set my BIOS settings to the following:

Ai Overclock Tuner [Manual]
CPU Ratio Setting [8.0]
FSB Strap to North Bridge [400MHz]
FSB Frequency [450MHz]
PCIE Frequency [100MHz]
DRAM Frequency [1081MHz]
DRAM Command Rate [2N]
DRAM CLK Skew on Channel A/B [Auto]
DRAM TimingControl [Auto]
DRAM Static Read Control [Enabled]
Ai Clock Twister [Moderate]
Ai Transaction Booster [Manual]
Common Performance Level [08]
Pull-In of CH A/B all disabled
CPU Voltage [1.35000V]
CPU PLL Voltage [1.50V]
North Bridge Voltage [1.45V]
DRAM Voltage [2.2V]
FSB Termination Voltage [1.3V]
South Bridge Voltage [1.05V]
SB 1.5V Voltage [1.50V]
Loadline Calibration [Disabled]
CPU GTL Voltage Reference [0.63X]
NB GTL Voltage Reference [0.67X]
DRAM Controller Voltage REF [Auto]
DRAM Channel A/B Voltage REF [Auto]
CPU Spread Spectrum [Disabled]
PCIE Spread Spectrum [Disabled]
CPU Clock Skew [Delay 200ps]
NB Clock Skew [Delay 100ps]

CPU Ratio Setting [8.0]
C1E Support [Disabled]
CPU TM Function [Enabled]
Vanderpool Technology [Disabled]
Execute Disable Bit [Enabled]
Max CPUID Value Limit [Disabled]

I'm trying to get my OC stable at 3.6ghz but my system won't even load into Windows 7. If I down clock to 3.4ghz I'm able to boot into Windows but Prime 95 fails within a few minutes. Any suggestions on how to get my CPU stable at 3.6 or will I have to live with 3.4ghz?

Thanks!

[Alien Grey]

Hello all,

I've recently attempted to OC my system using the 0902 BIOS but I wasn't able to get a stable OC at all. I've flashed my BIOS back to 0803 and set my BIOS settings to the following:

Ai Overclock Tuner [Manual]
CPU Ratio Setting [8.0]
FSB Strap to North Bridge [400MHz]
FSB Frequency [450MHz]
PCIE Frequency [100MHz]
DRAM Frequency [1081MHz]
DRAM Command Rate [2N]
DRAM CLK Skew on Channel A/B [Auto]
DRAM TimingControl [Auto]
DRAM Static Read Control [Enabled]
Ai Clock Twister [Moderate]
Ai Transaction Booster [Manual]
Common Performance Level [08]
Pull-In of CH A/B all disabled
CPU Voltage [1.35000V]
CPU PLL Voltage [1.50V]
North Bridge Voltage [1.45V]
DRAM Voltage [2.2V]
FSB Termination Voltage [1.3V]
South Bridge Voltage [1.05V]
SB 1.5V Voltage [1.50V]
Loadline Calibration [Disabled]
CPU GTL Voltage Reference [0.63X]
NB GTL Voltage Reference [0.67X]
DRAM Controller Voltage REF [Auto]
DRAM Channel A/B Voltage REF [Auto]
CPU Spread Spectrum [Disabled]
PCIE Spread Spectrum [Disabled]
CPU Clock Skew [Delay 200ps]
NB Clock Skew [Delay 100ps]

CPU Ratio Setting [8.0]
C1E Support [Disabled]
CPU TM Function [Enabled]
Vanderpool Technology [Disabled]
Execute Disable Bit [Enabled]
Max CPUID Value Limit [Disabled]

I'm trying to get my OC stable at 3.6ghz but my system won't even load into Windows 7. If I down clock to 3.4ghz I'm able to boot into Windows but Prime 95 fails within a few minutes. Any suggestions on how to get my CPU stable at 3.6 or will I have to live with 3.4ghz?

Thanks!

For your BIOS problem.


1. Remove the power cable from your PSU and push the Clear CMOS button for a minute or something.

2. Enter BIOS setup and load setup defaults.

3. Flash your board with BIOS 0902.

4. Repeat step 1. and 2. and don't load your old overclock profiles.

If that doesn't work reflash it with the same procedure. This seems to work when you've got problems with BIOS 0902 flashing it the first time. Don't ask me why but it's a fact.


For your overclock. Does your memory need 2.2V for 1081MHz?
Run MemTest86+ and try to find out how much voltage you need for 1081MHz.


If you need 1.45V for the NB to be stable at FSB 450MHz with Ai Clock Twister Moderate there's a good chance that you experience the exact same issue that I've got at FSB 470MHz when using CPU Clock Skew Delay 200ps and NB Clock Skew Delay 100ps and that is that higher voltage on the NB makes it unstable.

The 100ps delay difference between the CPU and NB Clock Skew is the key to the high FSB overclocks with our Quads but we need a new BIOS that makes it possible to use it with FSB 450MHz+ without having to push the NB Voltage higher than we should need for that FSB frequency to have it stable.


Try with CPU Clock Skew Delay 100ps and NB Clock Skew Normal or both on Auto with Ai Clock Twister Moderate. You can also leave it with CPU Clock Skew Delay 200ps and NB Clock Skew Delay 100ps and try with Ai Clock Twister Light or Lighter.

You should be able to use Common Performance Level 7 with FSB 450MHz and DDR 1081MHz.

[Swiguy]

For your BIOS problem.


1. Remove the power cable from your PSU and push the Clear CMOS button for a minute or something.

2. Enter BIOS setup and load setup defaults.

3. Flash your board with BIOS 0902.

4. Repeat step 1. and 2. and don't load your old overclock profiles.

If that doesn't work reflash it with the same procedure. This seems to work when you've got problems with BIOS 0902 flashing it the first time. Don't ask me why but it's a fact.


For your overclock. Does your memory need 2.2V for 1081MHz?
Run MemTest86+ and try to find out how much voltage you need for 1081MHz.


If you need 1.45V for the NB to be stable at FSB 450MHz with Ai Clock Twister Moderate there's a good chance that you experience the exact same issue that I've got at FSB 470MHz when using CPU Clock Skew Delay 200ps and NB Clock Skew Delay 100ps and that is that higher voltage on the NB makes it unstable.

The 100ps delay difference between the CPU and NB Clock Skew is the key to the high FSB overclocks with our Quads but we need a new BIOS that makes it possible to use it with FSB 450MHz+ without having to push the NB Voltage higher than we should need for that FSB frequency to have it stable.


Try with CPU Clock Skew Delay 100ps and NB Clock Skew Normal or both on Auto with Ai Clock Twister Moderate. You can also leave it with CPU Clock Skew Delay 200ps and NB Clock Skew Delay 100ps and try with Ai Clock Twister Light or Lighter.

You should be able to use Common Performance Level 7 with FSB 450MHz and DDR 1081MHz.

I tried the above but I'm still freezing within a minute in Windows 7. Not sure what I'm missing here since I was overclocked to 3.4ghz (425fsb) on the 701 BIOS. Ever since I've updated my BIOS to 0803 or 0902 I've had a very unstable system... any other suggestions?