Whats wrong with my memory?

hi
you have to go into the bios and make the changes..

from the specs of your ram you'd want to set it to 8-8-8-24
Voltage 1.65V

the ram should run at the specs it made for ...i think once you make the changes to the timings and voltage it will run at the rated speed

first i need to know the mother board you are using so i can look and see were you need to go and change the settings

on my board gigabyte ma785-ud3h i change the ram timimgs at this location in the bios


pic from online manual

Just to add to what's currently visible, you're currently running at 1333 according to your post. The clock is doubled from the readings in Cpu-z, where it says pc2 8500 is just the default startup settings for compatibility. On the previous page (memory) that displays the current settings of 666.7, double that you have 1333. To achieve the higher setting of 1600 voltage must be set to 1.65 which is the manufacturers specification. The 1.5 v setting currently used is standard voltage for ddr3 chips. In your bios prior to the ddrii timings sheet you should see a ram setting for EPP which refers to enhanced performance profile on gigabyte boards. Enable Epp mode for clock speed, right beneath that should be Epp voltage enable this also. You must enable the EPP voltage setting or you probobly won't be able to post on next boot after setting. Run Cpu-z again and click memory, you should see 800mhz, which doubled is 1600. You may need to type in ctrl F1 to reach enhanced bios screen settings once you come up into the initial bios screen. Good luck

its related to bandwidth as bandwidth is directly determined by mhz(speed)

what are you stuck on I think he described what you needed to do fairly well?

your chips were rated to run 8-8-8-24@1.65 volts as a PAIR.. not as 4 chips
Its harder to drive 2 chips per channel than one.

so it may not be stable without tweaking.

to rand_79: I did tweak to get to 8-8-8-24 on all chips, but im not sure if its 100% stable, i will have to memtest it. Also will these timings at 1600Mhz give any performance increase over what i had before?