DDR4 - High Row Refresh Cycle Time (tRFC)?

Stysner

Reputable
Apr 9, 2015
317
0
4,960
Hi everyone!

I've been enjoying my new build (specs below if you're interested) for the last week. Haven't really overclocked it to what it can do (so far I suspect I have one of the better 6700K's), but I have set the XMP (obviously) and a mild overclock (4.4GHz) on near stock voltage on my I7.

Everything is rock solid, and some simple benchmarking (UserBenchmark) shows all components running above average.

Though, when I check out the memory specs in CPU-Z, it shows the tRFC at 416 clocks... Is that right? I'm not an expert on memory timings, but I've never seen something that high, but then again this is my first DDR4 build, so I'm not sure.

Specs:

Case:
Fractal Design Define S

PSU:
CoolerMaster V650

Mobo:
MSI Z170-A G45 GAMING

CPU & HSF:
I7 6700K (@4.4GHz - 1.220V Core) > (Noctua) NH U14S

MEM:
Corsair Vengeance 2x8GB 3200MHz CL16 (16-18-18 - 36)

GPU:
(old, to be updated) R9 270 @ 1050MHz GPU / 1420MHz Memory

SSD:
Samsung 850 Evo 250GB

HDD:
WD Blue 1TB
 
Solution
Refresh, just like nearly every other DRAM timing, is roughly constant in terms of absolute time. Double the clock frequency, timings expressed in terms of clock cycles (because that is the only expression of time digital electronic can directly work with) also double.

InvalidError

Titan
Moderator
Refresh, just like nearly every other DRAM timing, is roughly constant in terms of absolute time. Double the clock frequency, timings expressed in terms of clock cycles (because that is the only expression of time digital electronic can directly work with) also double.
 
Solution

Stysner

Reputable
Apr 9, 2015
317
0
4,960


Yeah I kinda had a feeling that it might be something like this. Thank you for clearing that up!