Gigabyte MA790X-UD3P and F2-6400CL4D-4GBPI-B

[Demonkiller]

Hello guys, I'm having some issues/instability when my RAM is above 900MHz.

I just did a testing and, I booted my FSB with 224 and Memory x4.00 (= 896MHz) and ran memtest and ORTHOS, it was stable, then I just pushed to 225 and Memory x4.00 (= 900 MHz) and it was a NO GO, unstable.

And my point is, I bought this new motherboard just to overclock my Memory RAM. my other motherboard was a Gigabyte GA-MA78GM-S2H and I upgraded because of this same particular error. (note: the Gigabyte GA-MA78GM-S2H doesn't have a CPU-NB Volt on BIOS, and wasn't very good for OCing, another factor for the upgrade).

I also posted on overclock.net but people couldn't help me very much, that's why I'm here

I am trying to Overclock my RAM modules to 1000MHz 5-5-4-12, I've tried 960MHz 5-5-4-12/5-5-5-15, 1000MHz 5-5-4-12/5-5-5-15 and all were NO GO.

My spec:
AMD Phenom II X4 955 *BE* @3.85GHz atm
Gigabyte MA790X-UD3P F5 Bios
2x2 G Skill Black Pi 800MHz 4-4-4-12
CoolerMaster eXtreme Power 550W PSU
Nvidia GeForce XFX 9800GTX+
320GB S-ATA II / 80GB IDE as storage.

http://valid.canardpc.com/show_oc.php?id=1155978

[GSKILL TECH]

Did you overclock CPU-NB to x11 2200MHz? CPU-NB Voltage +0.1V

Raising NB and HT Voltage may help as well.

Let me know how that goes.

Thank you
GSKILL TECH

[Demonkiller]

Since I'm new on this motherboard, I gotta get used to it, I still don't know how good I can go with my CPU-NB Volt, as for the CPU-NB Link I set it depending of the FSB, always limiting from 2000 ~ 2400MHz...

When I had my RAM OCed @1000MHz, that was the spec: 250 FSB, 14x Mult = 3500MHz, and tried many CPU-NB Volts. all were NO GO, from +0.1 to +0.3.5, it was unstable all the time...

I've tried to push the vDimm to 2.1V see how that goes and yet was unstable.

CPU-NB Link was @2250.

[GSKILL TECH]

NB and HT Voltage may help stabilize as well.

Thank you
GSKILL TECH

[Demonkiller]

Hello again,

In the past 2 days I've been trying to OC my RAM to 1000MHz, tried all possible matches, all were a NO GO, I started at 1000 @5-5-5-15 with 2.1V, and 1.25 CPU-NB Volt, and started raising, 1.275, 1.3, until 1.5V CPU-NB Volt, all were a NO GO, then I did the same steps but with 2.2V, same thing.

I'd like to know if Gigabyte boards are not very good on OCing RAM?

Thanks.

[GSKILL TECH]

No, it mainly has to do with the AMD CPU memory controller. If you are raising CPU-NB Voltage, you might as well oc the Northbridge to see if that will help. Sometimes setting NB Frequency to x11 2200MHz can help with overclocking.

Thank you
GSKILL TECH