G.SKILL Releases Ultra Low Latency CL17 Trident Z RGB DDR4-4266MHz DDR4 Kits
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kruno
Holly molly, that is some wicked s**t memory
I_Am_Weasel
G.Skill "is" or "are" you can't have have them both Hilbert 😀
tsunami231
since when is CL17 low? or even ultra low? maybe it is in terms of super high frequencies memory sticks?
Fierce Guppy
My mobo isn't good enough.
HeavyHemi
CL 17 latency at 4.2ghz is roughly equivalent to CL 8 latency at 2ghz. Plus the added bandwidth of the higher frequency RAM.
kruno
On 4266MHz cl!7 is very very low. Remember you can still buy 1600Mhz cl11 DDR3 memory so in that contest it is very low.We are her still talking about less then 0.5ns cycle time and less then 8ns for first word.
user1
almost looks like you are maxingout the ringbus, have you tried setting the uncore even higher? (if thats even possible lol)
varkkon
Awesome! Any word on when the Threadripper version will be out? I know it is DDR4 and technically it should work on a X399 mobo, but there is that compatibility weirdness and most likely it doesn't work and is only for Intel CPUs.
It be real cool to see what the extra 1066mhz and timings would do for a Threadripper and Ryzen based CPU in games and benchmarks.
asturur
Well it depends.
I agree is not a bottleneck having the memory at 3.8, 4 or more GHz.
But someone has to push the pedal on the accelerator, someone does faster memories, and someone else will make faster memory controllers to take advantage of them.
tsunami231
that make sense not sure why i didnt realize this., maybe my attempts to forget all things i know about computer tech is finally working:p
Loophole35
Damn where were these when I built my system. Maybe I should just try out the timings and see if I get lucky.
user1
You would expect the bandwidth to go up even with looser timings on 4000mhz, since you're still seeing bandwidth scaling with the higher uncore even with looser timings at 3845, it would seem that coffee lake can't make use of 4000+ speeds unless you are setting the uncore past 5.3ghz.
Nice chip btw, truely amazing.
nizzen
3200mhz is so 2014..
4000 cl17 is pretty easy on CL, sky x and coffy L with b-die 3200cl14, 3600c15/c16 3733 c17 etc. Just add 1.4-1.45v 🙂
MegaFalloutFan
delete
user1
That would be @DStealth 's setup, Should probably ask him lol.
-Tj-
That drop happens when mobo auto raises 3rd timings to "compensate" for higher speeds.
I saw the same by mine 2400 ok , 2666 drop by write and copy, when i tightened back 3rd timings similar to 2400 if flew over 40GB/s (was 31)..
But for that I had to use more cpu sys agent voltage
MegaFalloutFan
Whats 3rd timings?
MegaFalloutFan
Can I ask you some questions about your overclock?
What cooling do you use? CPU is Delided? Is it 27/7 setup or benchmark mode?
Do you have Ring bus locked at the top speed or its down-clocking like CPU when idle?
Im on Gigabyte Gaming 7, so far i just enabled CPU Upgrade 5Ghz from the mobo and it works, ill tweak manually later, see if i can push it passed 5Ghz
Im on Corasir 110i, replaced their fans to two 140mm Noctuas
I got Corsair 4266MHz 19.26.26.46.72 1.4v KIt, it was amazing at first, plugged it in, enabled XMP2 and everything worked, booted fine and no Zero issues.....until i decided to benchmark and got 16000 MB/s read and write LOL
I tested RAM by choosing default (2333mhz) speed and got 31K, so i decided to test what will happen if i downlock it to 4000Mhz and to my amazement got 52404 MB/s READ, 57054 MB/s WRITE, 47384 MB/s COPY, 49.2 ns
So far the only optimizing i did is lowering timing one digit down 19.25.25.45 and got 53185 MB/s READ, 57673 MB/s WRITE, 47384 MB/s COPY, 49.2 ns
So, how did you achieved such low timing? did you increase the voltage or your RAM is just that good? you just lowered the timings and it holds?
-Tj-
Especially trdrd and twrrd
Read
4-6-6
Write
4-7-7
https://linustechtips.com/main/topic/773966-comprehensive-memory-overclocking-guide/
