rrundzans Posted March 6, 2010 Posted March 6, 2010 (edited) Hi everyone! Just yesterday bought brand new cooler for my cpu, successfully replaced stock cooler, so i guess it is time to try some OCing : ) (@ idle its 40, load 60 now. i think it would be better if i would put thermal more carefully, and/or used standalone one (i used that came with cooler), but i am 99% sure tems are not an issue here) So my system specs are: mobo: Giga Byte GA-EP45T-DS3R (Supports DDR3 1900MHz) http://www.gigabyte.com.tw/Products/Mother...?ProductID=2851 cpu: Intel Core 2 Quad Q9550, 2.83GHz, FSB1333, 12MB ram: Kingston 2GB, DDRIII1600MHz, KIT OF 2, CL9 (= 4 modules) psu: Chieftec 750W cpu cooler: asus silent knight 2 Overall my system looks oc ready (1600Mhz ram, mobo supports 1900Mhz). However, i am failing OCing it bigtime.. At stock, it was 8.5 x 333 = (2830.5). First things i did was lowered multiplier to 8 (fine cpu clock ratio: off). I increased voltages to both cpu and ram, so there will be enough juice if needed. I also fixed my rams timings to 9-9-9-24 (they climbed up automatically with fsb, i think it is unneccessary)). fixed pci bus to 100mhz also. So i incresed fsb to 355 and got stable (primed & memtested) system = 355x8 = 2840Mhz system. However, if i try upping fsb more (to 366) it fails to start up OS. When i memtested it, LOTS of errs showed up. I also tried to un-fix ram timings (to auto), no success eather. I am sure i am missing something. Pls help guys . My bios settings (@m.i.t page) are here (stable 355x8): M.I.B first page: http://not.justdied.com/pic/001/mit1.jpg http://not.justdied.com/pic/001/mit2.jpg http://not.justdied.com/pic/001/mit3.jpg Adv timing control (left it as it was): http://not.justdied.com/pic/001/atc1.jpg http://not.justdied.com/pic/001/atc2.jpg Adv clock control (made no changes here also): http://not.justdied.com/pic/001/acc.jpg Tnx in advance. Edited March 6, 2010 by rrundzans Share this post Link to post Share on other sites More sharing options...
Flibo Posted March 6, 2010 Posted March 6, 2010 Just in case, you could try to lower your memory clock frequency and see if it gives errors. Why would you drop your CPU multiplier? 8,5 is a blessing Share this post Link to post Share on other sites More sharing options...
rrundzans Posted March 6, 2010 Posted March 6, 2010 Hmm.. It is ok to manually change mems freq? I thought it must be fsb x 4 for ddr3 rams. Share this post Link to post Share on other sites More sharing options...
rrundzans Posted March 6, 2010 Posted March 6, 2010 Flibo Tnx a lot. RAM truly was weak link. I changed fsb:dram to 5:8 for now, and that prevents ram freq going above 1333 (stock freq). So for now on i am excluding ram out of equation. Perhaps later i will try to find correct ram timings for higher freqs. Share this post Link to post Share on other sites More sharing options...
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