8 PACK MEMORY RANGE GROWING: SAY HELLO TO 8 PACK RIPPED EDITION & 32GB KITS!!!

ran it but have no idea if its good or not :o

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Think mine was very similar. I know it's possible to manually get faster but for XMP, no time required to get working I think these kits are pretty good. I've got too many jobs to do, massive garden revamp, to have time to do much tweaking.

Interested to hear what the more experienced make of them.
 
So for the fun of it set trfc to about 340. That not too tight. And run again.

Your should be getting under 110 easy and 210 default.

But trfc and tfaw need to be tightened.

Why would the trfc be set so high for XMP when it can be tightened up so much? Tbh I'm not that up on what all the RAM timings do.
 
Why would the trfc be set so high for XMP when it can be tightened up so much? Tbh I'm not that up on what all the RAM timings do.
TRFC is how long the ram will recharge a cell for. Cells need to be continuously recharged to hold their value. Mobos put this loose as most ram of old needs a longer charge. B-die is much better in this respect.

TRFC is not part of the XMP spec..so is trained by the mobo which will naturally be cautious.

And not to sound like a ****, but that is why you buy this kit and not other stuff.
 
TRFC is how long the ram will recharge a cell for. Cells need to be continuously recharged to hold their value. Mobos put this loose as most ram of old needs a longer charge. B-die is much better in this respect.

TRFC is not part of the XMP spec..so is trained by the mobo which will naturally be cautious.


Ok thanks, that makes sense. So if it's being charged for a shorter time the value can be changed sooner?
 
Ok thanks, that makes sense. So if it's being charged for a shorter time the value can be changed sooner?
Nope. That's a bit different.

If a bit in ram is set to 1. The cell holding that bit needs to be constantly recharged to hold that value of 1. The longer the controller is handling recharging bits the less time it has to serve requests. At least that's my understanding from reading the specs.
 
god dam it i was looking for a non existent value :o, will have a play tomorrow any advice on what i should set it too? (default is 38)
Tfaw not tfawr. That should be a min of 4*trrds. Faw stands for four active window, hence the min of 4 multiplier, four read ops in the window take at most tfaw. Trrds is the time between read ops on the same bank (short) trrdl is across different banks (long) . 38 ain't bad. Maybe head to 32.

Something like that anyway.
 
I'll tell you how to sort it all out once I'm done playing BFV. :p

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OK.... So what you are looking at with your timings is exactly what I was looking at when I manually overclocked my kit (which is the 3200MHz 8 Pack stuff) using the same primary timings. I thought I was good. Except you can get much better performance if you use the dram calc.

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Nothing remarkable but this will be what you will achieve with the dram calc as well.

Aida64 says I have a latency of 66ns which I am personally very pleased with.

The way I did it was quite easy:

Use the primary and secondary timings from the dram calc. Set only the dram voltage and don't change anything else. Everything else auto. When I say don't I mean you do not need to change the VDDG or VDDP voltages or fiddle with procodt or RTTnom etc etc... only the primary and secondary timings.

Set your ram frequency and FCLK. (I am assuming the FCLK you choose is stable in the first place)

Run the memtest part of the dram calc 400% single for around 80% of ram. I do about 11Gb of 16Gb. Takes around 2hrs ish.

If you get any errors add 0.01v of voltage. Repeat this until no more errors and you pass 400% in this memtest.

You may or may not be stable at this point. I find different games push the system differently. At 1.45v I was good for many hours in Doom Eternal. Fire up BFV and I was freezing. Eventually my voltage is now 1.47v and the crashing in BFV has gone and Doom Eternal still plays just as well as before.
 
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@opethdisciple I don't get why I complete that test almost 20 seconds quicker than you, at 3400c14?! Your tRC should come down to at least 48. Your SCL's should go down to 2. But, can you get down to 14-14-15-14-28-42? Though I've never seen a difference in benches having tRCDWR lower than tRCDRD like it suggests. You'd likely get identical performance, and perhaps more stability at 14-15-15-14-28-42.
Have you adjusted any of the CAD_Bus settings? My system with dual rank is happy at standard 24-24-24-24 but you may be able to disable GDM if you set these to 120-24-24-24, also Proc ODT to 53 if its not already.
 
@opethdisciple I don't get why I complete that test almost 20 seconds quicker than you, at 3400c14?! Your tRC should come down to at least 48. Your SCL's should go down to 2. But, can you get down to 14-14-15-14-28-42? Though I've never seen a difference in benches having tRCDWR lower than tRCDRD like it suggests. You'd likely get identical performance, and perhaps more stability at 14-15-15-14-28-42.
Have you adjusted any of the CAD_Bus settings? My system with dual rank is happy at standard 24-24-24-24 but you may be able to disable GDM if you set these to 120-24-24-24, also Proc ODT to 53 if its not already.
I'm over 35 seconds faster. With cl16. Although I run 3733.
 
I've realised the dram calculator is basically a bit rubbish. Glorified spreadsheet.

I think it's more useful as a guide rather than gospel. I have come to realise what a rabbit hole RAM tuning is though! Tune to sell my old kits, very pleased with these Ripped Edition sticks. Nicely fills all my motherboard slots too ;) I can now throw my money at at a GPU that can do ray tracing at decent frame rates when they're eventually available.
 
i found trfc and dropped to 340 and tfaw was dropped to 32, i've noticed since the latter was dropped the read and write speed of the ram has dropped slightly, is that normal?

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I'm gonna make a wild guess.

Drop you trrdl to 8, should be fine stability wise, and see if that fixes it.

These are good times, but im not blown away. Are you on 2*16?
 
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