OCZ SLI PC6400 Overclocking

[NewComer]

I considered that this one RAM was assumed to be very good for overclocking. I begins with the common configuration as stated below:

FSB 800
4-4-4-12
2.0 v

I am able to get only it to this:

FSB 900 (which reads that actual is 864)
5-5-5-15
2.1 v

It's my opinion that you should not push these chips past 2.1 v. Am I wrong or am I going to do wrong? I read so many articles where several persons have simply pushed this passed the 900 mark by loosening the timings.

[Russell]

Yeah ! I am getting your issue but I need to know some information that can be much helpful to find the exact fix for such issue, Can you tell me, Is that at T1 or T2? And if you are able to do then could you also give me a link to the exact memory that you have got. If you captured any screen shot of all your moments or timings in MemSet, then just post them also with the thread ...if you find it possible to do ?

[MattyBoy]

Actually he is talking about OCZ SLI-Ready 2GB RAM, Am I right ??

The SLI ready 2GB kit from OCZ contains the NVIDIA Enhanced Performance Profiles built in making it the better memory possible for use in nForce SLI dependent motherboards. These boards came with a custom-designed BIOS, like the designed for NVIDIA nForce SLI MCPs is able to boot at 800MHz with 4-4-4-15 1T timings right out of the box.

The exclusive NVIDIA XTC heat spreader provides the most flexible cooling possible. Airflow is optimized by making micro-convection currents in what is commonly dead space in conventional heat spreaders. The honey-comb design offloads heat frequently.

[Roasted]

I am running with the following settings on my machine, rock solid stable with the these settings:.

CPU: 334 FSB
1.3250 vCore
diabled spread spectrum
9X CPU multiplier
--------------
Memory settings

vDIMM 2.15
1:1 or 5:4 (668 or 835)
5,5,5,15,5,42,4,11,5,14 (in northbridge settings) I got these from memory reader in windows at full stock configurations.

Just made disable some memory configuration after these.. It doesn't matter how I configure the memory either 1:1 or the next higher, the memory always detects as PC5300 on start up. If I do not move for overclocking at all then the memory starts up just well at PC6400...Where I have issues is that system hangs on startup even when I push the vCore up to as maximum as 1.5000 volts and or vDIMM up to 2.25 volts. Can anybody help me to get my system again with best speed? I am trying to get all my parts locked into their top performing status. It is not just the processor which will get bottlenecked if the rest of the system is performing very worst.

[SecRecy]

And currently that stupid chip is going to warn you that how much you can OC it!?

This is the exactly, what you going to do, that has been proven quite helpful when users are running with complexity : Lower vCore and vDimm one notch at a time until you are no longer Prime95 and memtest stable, at 334Mhz FSB.

The move up the FSB by 7~10Mhz during that time with this voltages until you are no longer stable, when you are not, you have to add a notch to vCORE. After you will require to add a notch, Move up the FSB by 7~10Mhz at a time using this voltages until you are no longer stable, and you get the drill. Just keep a 1:1 ratio and just make sure that your memory should not go beyond 2.1v when you get 400Mhz FSB.

[Spyrus]

It assumed like my ignorance of how ASUS considered that it's motherboard reports memory configuration is the real issue. After an OCZ tech suggest me that ASUS reports the memory PC#### value depends on the multiplier I considered out on that: Any time, I have it configured to 1:1 it will report the memory as 266 * the Inverse of the memory configuration * 2 = 533 or PC4300 or if I configured it to 4:5 it will = 667 or PC5300 and if I configured it to 2:3 it will = 800 or PC6400. This is regardless of the factual FSB overclock.

It suggest that I am actually finding my good performance from the memory, as when I am at 334 FSB my memory at 4:5 is similar to the actual value of 835 that is quite acceptable. I now have vDIMM 2.1 and vCORE 1.325. Using ORTHOS I can get 2 hours of CPU and some Ram check and go 9 hours of CPU stress without any errors.