Samsung "green memory" progress 2x4GB/Z77

[Clutch_Head]

it's been a week since i got my new build. finally settled on 100x44 1.25v on the core.

now onto the RAM. it's a 2x4GB "green" kit from samsung MV-3V4G3D
first thing i did was go into BIOS (Asrock Z77 Extreme 4) to find it running at DDR1600 with 1.58V
i'm guessing this is ensure it post's with the majority of RAM out there.

goal for the RAM was moderate tight timings at low voltage with high stability. knowing gains will be minimal outside benching/encoding.
i was unsure how to proceed. i do know that some numbers are related to one another and if they aren't correct it will refuse to post. so i tried this method...

setting the RAM to 1333 @1.35v and everything on auto i went back into BIOS and change most settings to what was current @1333 then switched to 1600.
the left number is the auto setting for 1600 the red are 1333 settings.

CAS 11 9
rAS 11 9
tRP 11 9
tRAS 28 24
CR 1N

tWR 12 10
tRFC 128 107
tRRD 5 4
tWTR 6 5
tRTP 6 5
tFAW 24 20
tCWL 8 7

tREFI 6240 5200
tCKE 4
tWRDR 1
tRWDR 3
tRWSR 3
tRRDD 3
tRRDR 1
tRRSR 4
tWWDD 3
tWWDR 3
tWWSR 4

\/other setting to auto\/

<run memtest86+ 5.00b6, drop voltage .01v, repeat> got down to 1.2v and got errors on pass #6
bumped it up to 1.25. 10 passes without errors

i'm very happy with these settings considering the risk:reward ratio for any tighter timing or >1600 stressing the IMC.

 

[Evilsizer]

yea seems if you got a early batch they oc like mad. i still havent messed with the two 2x4gig kits i have from around that time when few were using them. isnt a bad oc for such a low cost ram option, a hidden gem if you will. that is assuming some of the newer batches are ocing like that early ones. can you post a pic or the info off the sticker on the sammy sticks.

 

[Clutch_Head]

can't get a good pic and not really wanting to take them out.

damn this text is small. not sure about the red x

4GB 2Rx8 PC3L12800U 11-11-H0 M379B5273DHO-YKO 1209

 

[Woomack]

These IC are scalling at least up to 1.65V. Many like higher voltages but some have weird walls like my sticks @~2500 even though it's 2400 CL9 kit.

I would try:
1866 8-9-9-21 / 9-10-10-21 , 1.35-1.55V
2133 8-9-9-21 / 9-10-10-21 , 1.50-1.65V, +0.1V VCCIO/VCCSA