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I'm not sure, but I think my mobo is on my sig, if not, its an MSI G41M-P23. Yes, very cheap and not the best for OCing, but it was all I could afford(as I didn't know everything I do now), but anyway, the problem I'm having is with these two timings specifically. All other timings I can change, most with a max of 15 clock cycles in the BIOS, but for these two, I can't. The BIOS has "tRC" but its actually tRFC so I got confused when I first tweaked it, and ended up locking up my system, so I had to reset the CMOS and change all the settings in the BIOS back to the way I had them. Anyway, here is the simplest way I can explain this:

BIOS==supports tRFC
tRFC max clock cycles=78 in BIOS
BIOSxxxxtRC unsupported
tRC set automatically without manual option(presumably, or it could be negligible)

So now its going to get a little bit more confusing:

tRFC auto in BIOS====86
tRFC in SPD@1066MHZ====86
tRFC in SPD @1333====107
tRFC auto in BIOS @ 1333====86

So the problem is, I need to change the tRFC to go above 78 clock cycles, but the BIOS doesn't let me go beyond that manually, if I set it to auto, it goes to 86, which is still too low.

The other problem is, I can't even see or change tRC at all! I've narrowed down all possibilities of what's causing my system instability to these two timings because they don't and can't change.

In the BIOS, when I go into Memory-Z I can see all the timings. AUTO doesn't set to those on the SPD in Memory-Z so its unreliable. However, I think, I have to check, but if I'm not mistaken, the tRC is marked with an "N/A", while tRFC is "107". so could that mean that the tRC is negligible?

Also, in my attempt to make the system stable without worrying about these two timings, I've run into some, uh, counter-intuitive results. You'd think that lowering the clock cycles for ALL parameters would decrease the latency(making the system faster) and causing instability. Well I've experienced just the opposite, and actually setting some of the other timings(tRRD,tWTR,tWR,tRTP) lower has made the system slower and more stable!thumbsupsmiley.png
Now, that's not the only way the timings are working against logic, since I'm trying to keep the RAM at as low of a clock as possible, I decreased the ratio from 1:2 to 1:1.6 and, well, it hardly helped. At 1:2, the RAM works perfect @ 1066mhz 7-7-7-20(which is also where the SPD says tRFC is 86) but when its at 1:1.6 and the RAM @ 1066mhz(which means the CPU is oc'd to 3GHz) the RAM is no longer stable at those settings wha-smiley.png (and maybe this just means the CPU isn't stable? haven't tried uping the CPU voltage to check)

Now let me also give some more information on the testing. I used to try testing with prime95, but I decided I didn't care for such long term stability, so I just use IBT to check for proper functionality. In both tests, I NEVER see unstable results reported and I NEVER see BSODs(maybe black instead of blue). No what I get is the system crashing in the weirdest way, I get a "No Signal" black screen on my monitor. I've tried waiting to see if it was a gfx issue, but it doesn't ever come back on. This has become my way of knowing whether my RAM is stable or not. Yes, I checked memtest and the RAM passed for hours. So I don't know what's going on with the system, maybe the black screen is a result of CPU failure? no, because when I do have cpu failure and the black screen, it gets reported to me as a BSOD upon startup, at least I think so, that happened once or twice, but i fixed that.

offtopic.gif ANYWAY, i'm tired, its 5am I've been up for like16 hours messing with computers(in addition to my own computer giving me a headache, I got my aunt's new laptop that needed a Win7 upgrade and antivirus software PLUS she got it at the pawn shop so there were no instillation discs so I had to find the drivers on the internet one by one. yay mad.gif)