Need help flashing ram SPD

Found my answer.

 

I just purchased Thaiphoon. I now am at Cas6, nothing I can really see as a huge difference...........

 

Im actually wanting to loosen my timing for more overclock. I flashed mine with an old version of Thaiphoon Burner, the 6.3 trial, but I flashed it with one of the automatic timings and now my overclocks are jacked up. Does anyone know what all of the original timings are on the stock ram? I need to play with these timings a lot more obviously

 

The original timings are 7-7-7-20 for the 1066MHz memory in the P-7805u; the P-7811 has 800MHz RAM so the timings would be different.

 

Thanks, I have a 7805u. Whenever I try to adjust memory timings to anything other than stock in TB it causes me to crash as soon as I apply any OC. I can flash it back to stock and I can OC again, but hit a ceiling at around 333 on SetFSB. I have also tried adjusting the timings in memset, but it doesn't seem to make a difference, possibly since I can't change the CAS? Any suggestions?

 

I don't have a way to chane the FSB, since I have the X9100 I no longer have a reason too look for one either. I wet with the slightly tighter timings and it does make some difference in memory intensive tasks but nothing major.

Since I've gone to CAS6 this is the end of upgrades for the P7805 for now. I won't bother with 8GB of CAS7 memory till I feel I need it..............

I think one of my sticks though was an issue, it seemed really slow on it as a single stick. I flashed it and it picked back up. The other stick was sfast even at default cas7 so I may have inadvertantly caught a bottleneck.........

 

Why can't you change the CAS? Any way once you get things figured out I recommend starting with 9-9-9-25 timings for a 333MHz FSB OC because anything lower would be actually a lower latency from the stock 7-7-7-20 @ 533MHz.

 

Memset won't let me change the CAS timing... otherwise it would be perfect

 

Unfortunately the PM45 chipset in the P-7805u doesn't support ram at CAS 9 so the system won't boot up with that setting. The max would be CAS 8, at least from what I have tested on my system.

 

You must have damn good RAM then because I know you overclocked your FSB substantially.

 

I tried mine at 9 and it wouldn't boot... Even when I tried 8 it would not overlclock at all. Even if I applied the stock clocks through SetFSB it would crash. Maybe I just need some new ram.

 

Does it boot and run at CAS6 stock FSB etc?

 

I'll try it now

edit: well i lowered the timings and now setfsb works. weird. I guess I can try the higher timings again.

edit 2: just flashed both modules back to the looser timings and now I'm @ 3.05ish GHz... Not quite sure why this didn't work before.

 

For the record what program(s) can you use to lower the CAS latency of RAM and is it safe to do?

 

I used Thaiphoon. As far as safe, well you have to be carefull as you could easily make the ram unbootable. so long as you have two sticks and keep one at good settings you should be ok as ram willtend to run both together at the slower settings and you can reflash, WITH CARE!!!!!!!!!

 

Yes, I also use Thaiphoon burner as well.

For one of my ram sticks, the part of the SPD that contains the ram timings has actually been permanently software write protected so even if I try to write new values to it, those values won't actually change if I check afterwards. In this case, this ram stick would be safe from accidentally flashing unbootable ram timings.

I'm not sure if it's the same for you bus_driver?

 

Both sticks are writable, and I have checked, double checked, triple checked them to the point that I have become anal retentive about the timings. Now I just need your bios Kravis so that I can get Throttlestop up and running.