Memory question

[Fawlty]

Fella's I just installed 6gb more memory of the same type. Here's a few shots to save on a long drawn out explanation, note the memory speeds.







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For some reason when all 6 slots are filled 3 are only running at 1333.
I pulled all the memory then filled 1,3 &5 (white slots) with the new memory and got 1600.

Just wondering if any one has a suggestion, my next step will be to update the bios from current FA, but I'll wait for any response.

Cheers
Fawlty

[wazza300]

You can manually adjust ram speed by increasing the spd system memory multiplier to give you 1600mhz,also set dram voltage to what's printed on the ram,either 1.5v or 1.66v,make a note of what auto sets qpi/vtt voltage to,as the more ram and faster the speed the more qpi/vtt voltage you will need to cope,for 12gb I would test with between 1.35-1.42v qpi/vtt voltage

[Fawlty]

Hey Wazza, ya I have my BCLK @160 and my system speed memory at 10
XMP disabled
QPI/VTT at 1.28 (that may be a bit low)

The strange thing is, the memory sticks in the white slots 1, 3 & 5 are at 1600. The blue slots 2, 4 & 6 are at 1333 as per the first image.

Cheers
Fawlty

[wazza300]

Ah,I see what you mean,can you download CPU-z and look at the memory tab to see what it shows? Still could be not enough qpi/vtt voltage to run all sticks at 1600mhz hence the blue slots are at 1333mhz? Could be a bug in aida64? In easytune/memory tab it should show you your current ram speed aswell,just to rule out a software bug

[Fawlty]

Ya both Everest (images above) and CPU-Z both give me the same results. Don't think I even installed EasyTune.
I'll give the QPI/VTT a boast, will let you know if I get any results.

Cheers
F

[wazza300]

Can try with qpi link speed at 44x,and I would set uncore freq to 21x

[Fawlty]

Well tried just about everything but she's a no go,

Appreciate the help.

Cheers
Fawlty

[wazza300]

Tried latest BIOS? After flashing load optimized defaults and re enter all your BIOS settings

[shadow6491]

Im not an expert. But I dont think it is physicaly posible for the memory to be running at different clock speeds. The same clock goes to all the dimm sockets.

[rclark]

Hey Fawlty,
Wonder if you go into bios and just reset to "safe' or "opitimized" with all 6 sticks in and then after reboot go back into bios and enable XMP, this should insure all memory set to
mfg. specs. Then check and see if memory showing correctly,if so, you should be able to just reenter you overclock values and be done-- ( I hope--ha !! )
see ya --- rc