Everyday

My Dominator GT 2133 rams are not completely stable with my CPU at full throttle, using Intel specified voltage. To get a stable setup I have been working out another spec, and there will still be room for improvement. What I want is the daily system to run as fast as possible. Since it is kind of difficult to test memory settings using non-synthetic applications, I have choosen the 3dmark11 physics score to be my reference line.

To get the system stable within Intel specifications:

DRAM frequency 1866MHz (down from 2133MHz)

DRAM voltage 1.65v

VCCIO voltage 1.15v

VCCSA voltage 1.1v

I have been tweaking primary, secondary and tertierry timings.

Limits, but not my prefered and fastest specs, within the Intel specs so far is:

Primary

CL 6 (stable)

tRCD 9 (stable)

tRP 6 (stable)

tRAS 22 (needs more testing)

CR 1 (stable)

Secondary

tRRD 6 (stable)

REF Cycle Time 88 (needs more testing)

tWR 10 (never touched it)

tRTP 6 (stable)

tFAW 35 (never touched it)

tWTR 6 (stable)

tCKE 5 (never touched it)

tWCL 7 (stable, unstable if lowered - needs to be changed in bios)

Tertiary

tWRDRDD 1 (never touched it)

tRWDRDD 3 (stable)

tRWSR 3 (stable)

tRRDR 1 (never touched it)

tRRDD 3 (never touched it)

tRRSR 4 (never touched it, but cant get lower than 4)

tWWDR 3 (never touched it)

tWWDD 3 (never touched it)

tWWSR 4 (never touched it)

RTL Offset 14 (never touched it)

Round Trip Latency (A) D0 33

Round Trip Latency (A) D1 32

Round Trip Latency (A) D0 32

Round Trip Latency (A) D1 32

Is visible in the right google-sheet, lowest timings doesnt nessesarily mean highest performance, even if I use 1866Mhz all through the benches.