Quote Originally Posted by saaya View Post
hmmm but i think cpuz eads pretty accurately on BR... can you please try with CxE disabled and vdroop enabled and check? it should be much better then
I always had CxE disabled

Quote Originally Posted by saaya View Post
yeah uncore is a big limit for i7... im sure without that 2 to 1 limit to mem clock we would be seeing DDR3 3000 already... at huge timings, but still...

heres a hint, i heard 1156 has a 1.5 to 1 limit, so higher mem clocks with lower uncore will be possible

from what ive seen the realworld impact of mem ocing on i7 is tiny... ocing uncore seems to be a bigger boost than ocing memory itself.
and in some scenarios low speed tight timings seem to be better and other benchmarks/apps pefer high speeds with lax timings...
on x48 you could run low speed tight timings and high speed high timings and get about the same perf... the fastest was 1800 cas6, the second fastest was around 2000 cas7... i havent played that intensively with i7s imc yet, so im not sure about this stuff with i7... but i saw that tony from ocz focussed on low speed tight timings instead of high speed high timings when tweaking his i7 system...

from what ive seen most seem to aim for 2000+ cas7, still, same as on x48... so for that 4ghz uncore is more than enough... if you want more then you need to go subzero afaik... and you need a good cpu, the newer ones can run notably higher uncore with lower vtt, ive heard of 4ghz on water with 1.2v vtt not sure if that was 100% stable though...
Im not even pushing for DDR2000 lol, Im fine with DDR1600~1700. But yeah, my Uncore runs at 3.2 now, with a Blck of 210 it would run what, like 3.36Ghz. But it just refuses to, tried around 1.4VTT, 1.75Vdimm, just no way, C1 error.

Set RAM multi to 6 but still C1, which pretty much makes the only suspect Uncore Now if RAM multi at 6 would be worth while but it ain't regarding latencies (DDR1260 with tCL6)

Weird thing is, my Uncore does 3.2Ghz with +100mV and 1.65Vdimm, but upto +300mV and upto 1.75Vdimm it just doesnt do it

Quote Originally Posted by saaya View Post
what are your cpu clocks?
i think uncore doesnt clock well if its above cpu clockspeed?
maybe thats why it needs so much vtt to get higher...

did anybody ever check how the efficiency is with uncore clocked the same as core compared to higher or lower? i remember anandtech did that but only briefly and they didnt check it at high overclocked speeds with fast mem speeds...
My CPU is at 4.2Ghz, 21x200. But I'd rather have 20x210 for the increased Uncore and RAM speeds, but whatever I do, no way. Sometimes it doesnt come up with a C1 error but simply BSOD's after POST or just before log on, even tried to increase Vcore a bit incase CPU likes more Volts with a higher Blck