UnOfficial EVGA X58 Classified Owners Thread

[cstkl1]

@cstkl1



You wanted someone with real stability - here I am

More than 16h of Prime 64Bit using 5.5GB of RAM. It's rocksolid. Never seen a DFI doing that, mate!

tested ure setting on the dram
u took a hit on bandwidth

not exactly the 2.1k c7 setting i was looking for but its stable

[SAE]

tested ure setting on the dram
u took a hit on bandwidth

not exactly the 2.1k c7 setting i was looking for but its stable

I later got 1057 7-8-7-20 with tighter subs and b2b cas=4 (with the newer cpu tweaker beta) primestable for 6h or so... (did not test longer as it's been during summer and 34°C... I have not been running my rig for about 8 weeks now as I sold my big rad while waiting for my ordered single stages. Being quite busy the last weeks I was not able to even think of testing anyway (though I miss it).

[cstkl1]

I later got 1057 7-8-7-20 with tighter subs and b2b cas=4 (with the newer cpu tweaker beta) primestable for 6h or so... (did not test longer as it's been during summer and 34°C... I have not been running my rig for about 8 weeks now as I sold my big rad while waiting for my ordered single stages. Being quite busy the last weeks I was not able to even think of testing anyway (though I miss it).

ok but u do know why
even though ure ram is stable for 2.1k 7-7-7-20 at 1.67set but u cant run prime
reason being is the vtt jump for 205 to 210 compared to 200 to 205
this also affects vcore scaling
guess this is the reason p55 can clock the ram high
to proove this i bet u can run 2.1 7-7-7-20 at 1.71v with no tweaks

[SAE]

ok but u do know why
even though ure ram is stable for 2.1k 7-7-7-20 at 1.67set but u cant run prime
reason being is the vtt jump for 205 to 210 compared to 200 to 205
this also affects vcore scaling
guess this is the reason p55 can clock the ram high
to proove this i bet u can run 2.1 7-7-7-20 at 1.71v with no tweaks

You mean it's all about the vtt-vdimm relation? I noticed the cpu needed too much of an increase of vtt voltage going from 2000 (1.35V set, 1.324V DMM read) to 2100MHz RAM (1.475V set, 1.46V DMM). This would limit stability strongly to about 2100 without subzero cooling. IMHO subzero could be the solution here. Will know soon.

[cstkl1]

You mean it's all about the vtt-vdimm relation? I noticed the cpu needed too much of an increase of vtt voltage going from 2000 (1.35V set, 1.324V DMM read) to 2100MHz RAM (1.475V set, 1.46V DMM). This would limit stability strongly to about 2100 without subzero cooling. IMHO subzero could be the solution here. Will know soon.

anyway figured out a few things and will post the result later for prime 12 hours

so far got up to 2100 7-7-7-2X ( X still trying to lower it down to 0) at 1.68v set
2 hours stable for the vdimm part with no adjustment on tFAW ,tWRWR etc.
my setup vdimm set = dmm voltage

btw from ure vdimm at 205
i am pretty sure u could have done the same at 1.66v

till the post ..

also the max stable from empirical evidence and tweaks available should be 2150 bclk 215

only tested on one gc initial at HT 0ff.
reason being i find HT off bettwer for vdimm tweaks and later on proceed to HT on for more dummy voltage adjustments only

seriously this board is damn easy to figure out
few bugs i found out on the bios however for A7 error.
not surprised at it cause of evga being innovative on certain IMC tweaks that are non-standard.
only happens if u manually set it instead of auto.