RAM won't run at correct speed.

kitkat9933 · 23 Oct 2013 at 18:49

I have 2 (2*8GB) kits of Geil Black dragon RAM http://www.overclockers.co.uk/showproduct.php?prodid=MY-158-GL&groupid=701&catid=8&subcat=1517

Both are identical kits, except the second kit was from a much later batch.

The newer kit runs at 1600mhz no problems, and yet the first kit will only run at 1333mhz. Both are rated for 1600mhz and are the exact same model. I have tried changing to to the XMP profile and manually inputting the timings for the rated speeds and still no luck.

SPD screenshots posted below.

Older 2*8GB kit, currently in slots C1, D1.

Newer kit, currently in slots A1, B1.

On the Labels they are both PC3-12800(and on site when ordered), yet the older kit says PC3-10700. Could this be the cause of the issue? Maybe packaged wrong?

Any ideas guys?

kitkat9933 · 23 Oct 2013 at 19:00

On the Labels they are both PC3-12800, yet the older kit says PC3-10700 in the SPD profile. Could this be the cause of the issue?

OracIe · 24 Oct 2013 at 13:37

Yep, and that's being reflected on the first and second screen shot.
Look at the max bandwidth difference.

What motherboard do you have? Slot #5 would suggest you have 8 slots?

kitkat9933 · 24 Oct 2013 at 15:34

Asus Rampage extreme 4. Does that mean the actual ram is not what it was sold as? As both kits were identical and the rams profile settings are contradicting the label and packaging?

OracIe · 25 Oct 2013 at 13:42

I would say its not as it was sold at, at the end of the day, despite the labels, the bandwidth is lower than it should...

Jono8 · 25 Oct 2013 at 13:46

Are you sure your motherboard can handle 4 DIMM slots filled and running at those speeds?

I am having issues at the moment with memory speeds and 4x4gb sticks (2 mixed kits)

Only actual kits will guarantee the speed and timings advertised. I know you bought two of the same kits but I have read that this is not good enough and mixing even identical kits can cause issues.

OracIe · 25 Oct 2013 at 13:53

Jono8 said:
Are you sure your motherboard can handle 4 DIMM slots filled and running at those speeds?.

Simple to test, whip out the other RAM leaving only those stick in and see what it reports as.

I'd be surprised if that was the case though.

kitkat9933 · 25 Oct 2013 at 13:58

The other kit on its own will only run at 1333mhz as-well. OCUK are letting me RMA it, so hopefully the replacement should be ok.

Jono8 · 25 Oct 2013 at 14:50

Oh wait you have quad channel memory so it wont be the same as my problem then. I guess it should be more than capable of having 4 slots filled.