Originally Posted by ocre
To ALL Some DDR3 1600mhz findings:
I had some serious issues with my ddr1600, which I almost RMAed. I have OCZ3RPR16004GK, which is supposed to setup at 7-7-7-24 @ 1600mhz. So i was doing some comparing to tighter timings with lower speeds and high NB. At first I couldnt run the 1600 with 1T or i would get errors so i tested a some with 2T. Well the test were favoring the lower 1200 with 5-5-5 I ran my old ram at over the 7-7-7 1600. But then my computer started crashing and wasnt stable. I never tested the new ram which seemed to do okay with 2T, but then i started to realize, I was getting memory errors. I couldnt run 7-7-7-24 as advertised. But i had ran the ram at a sweat 1333 5-5-5-16 1T for like 2 months, so i just couldnt see how the ram was bad because it was stable even at 6-6-6-18 1T at 1500mhz. So after thinking hard about it and many more test, I found out that there wasnt anything wrong with the RAM. AMD doesnt officially support speeds over 1333, although you can run those speeds, amd nor any memory manufacturer can promise you it will be fully stable. I can runn my ram at 1600 with 8-8-8-27 2t, and the imc seems to handle that okay, but anything tighter i get errors, and sometimes right away. So this is where i am now with my ddr3: 1460mhz 6-6-6-18 1T. this gives me slightly better performance over my old ram, which was 1220mhz 5-5-5, but that is barely any difference on any benchmark. The NB makes the difference here. whether you run 1600mhz at 7-7-7 or 1333 6-6-6 all the way down to 1066 5-5-5 and anywere in between, its gonna be pretty much exactly the same. If you can get 1333 at 5-5-5 or 1066 at 4-4-4 then you will surpass 1600 7-7-7 any day of the week. But then again, when you are speaking of memory boasting performance, you are speaking of millimeters when compared to the benefit of OCing the CPU which is like yards of differences
i got a lot of errors in memtest when i tried 7-7-7-24@1600mhz so i read some posts in the ocz forum where somone from ocz made some comparisons with 1600mhz loose timings and 1333 tight timings and the performance is almost the same unless you have some really crazy oc.
he also got the ram to run at 5-5-5-24 so i tried cl5 but it gives me some error beeps on boot. i also tried to increase the Vdimm a bit but it didnt help, any idea what settings will be needed to run it as cl5?
i have a strange motherboard temp sensor the highest temps on it are idle about 50Â°c and when i run a stress test the temps go down... to about 40Â°C... *** is wrong with that sensor?