X48 Rampage Formula Preview.

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I think I've got it all running stable now. I'm going to run some tests tomorrow.


If you want to run your G.SKILL F2-96000CLD-4GBPI memory at 1250MHz try with DRAM CLK Skew on Channel A/B Delay 50ps and DRAM Controller Voltage REF -10mV.

CPU PLL Voltage at 1.52V if your voltage fluctuates from 1.53V to 1.56 and CPU GTL Voltage Reference 0.65X with FSB termination Voltage 1.22V real to have your Q9650 running at 4.22GHz.

[OLDcomer]

q9650@4563 (9x507) Prime95 SmallFFT 1-2 hour test for fun:

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I'm done with trying to get it stable at 9 X 469MHz and DDR 1250MHz. It isn't stable and I don't think it's because of the memory at DDR 1250MHz.

It wasn't a complete waste of time and I've found some interesting things.

My CPU likes the CPU GTL Voltage Reference 0.65X and I've got to use CPU PLL Voltage 1.52V int the BIOS. The longest stable MemTest86+ Test 5 was 19 passes stable before it starts to fail with DRAM CLK Skew on Channel A Delay 50ps and DRAM CLK Skew on Channel B Advance 100ps.

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If you compare the original BIOS to the MOD BIOS than you know that ASUS did some work on the option ROMs and made the DRAM CLK Skew on Channel A Delay 100ps and DRAM CLK Skew on Channel B Advance 100ps the default for the original BIOS but didn't fix the stability problem.

[SoLoR]

If you compare the original BIOS to the MOD BIOS than you know that ASUS did some work on the option ROMs and made the DRAM CLK Skew on Channel A Delay 100ps and DRAM CLK Skew on Channel B Advance 100ps the default for the original BIOS but didn't fix the stability problem.

Managing option roms is not Asus job... they just intergrate what manufactures provides to them. I personaly think that option rom changing VITAL things like memory timings is a fluke (or design flaw) in the long run... option roms should have one function only, and that is to provide support and compatiblity for certain integrated hardware and not change functions that you might not want to be changed... But since this could be design flaw (and mobo manufacutes knows about it), this might be a reason asus is so reluctlant to update them, because they know it might effect stability. Funny thing is, all mobo manufacuters that actualy updates option roms every once in a while have award or efi bios. Dont think i ever saw mobo with AMI bios that manufacture also updates option roms... coincidence? could be... or not :<

[Alien Grey]

Managing option roms is not Asus job... they just intergrate what manufactures provides to them. I personaly think that option rom changing VITAL things like memory timings is a fluke (or design flaw) in the long run... option roms should have one function only, and that is to provide support and compatiblity for certain integrated hardware and not change functions that you might not want to be changed... But since this could be design flaw (and mobo manufacutes knows about it), this might be a reason asus is so reluctlant to update them, because they know it might effect stability. Funny thing is, all mobo manufacuters that actualy updates option roms every once in a while have award or efi bios. Dont think i ever saw mobo with AMI bios that manufacture also updates option roms... coincidence? could be... or not :<

Let's say that if they would like to update them it's going to be more work for them than just aading them to the BIOS. It's a bit sad that we still don't have a BIOS with the Special 133 Mode.

I've spend a lot of hours trying to get it stable at 9 X 470-469MHz and DDR 1253-1250Mhz and I know it isn't the memory that makes it unstable. If ti was the memory you can never run MemTest86+ Test 5 stable for such a long time before it starts to fail.

This is the reason why I don't believe in ASUS products anymore. If you want something for benching than it doesn't matter that much but if you want it to run stable than... well you better look for something else.

I know that 4.05GHz 24/7 stable isn't bad but if you've got that stable with the lowest voltages than something is seriously wrong.