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Is there a rule of thumb for calculating tRAS for DDR4?

I remember when I overclocked my DDR3 kit, there was a rule where you added up the first 3 timings and subtract by something to get a rough idea of what to change your tRAS to (4th timing) to save time testing.  

Is there something like that people do for DDR4?

Otherwise, I'll just spend more time working the timings and testing I guess. 

Memory overclocking is so tedious so it's worth asking anyways.

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@Jumper118 might have more input on this.

|King Of The Lost|
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24 minutes ago, stateofpsychosis said:

I remember when I overclocked my DDR3 kit, there was a rule where you added up the first 3 timings and subtract by something to get a rough idea of what to change your tRAS to (4th timing) to save time testing.  

Is there something like that people do for DDR4?

Otherwise, I'll just spend more time working the timings and testing I guess. 

Memory overclocking is so tedious so it's worth asking anyways.

the timings i've been using for b-die is basically the same as the b-die kits sold on newegg, but with higher speeds, 14-14-14-34 at 3466 or 3600, 15-15-15-35 at 3733, 16-16-16-36 at 4000, and 17-17-17-37 at 4133.

 

for hynix dies i'd imagine the timings are looser and not as uniformal.

 

for current cpus i like 3600-4000, if you are lucky enough for a zen+ that does 4000+, grats.

5950x 1.33v 5.05 4.5 88C 195w ll R20 12k ll drp4 ll x570 dark hero ll gskill 4x8gb 3666 14-14-14-32-320-24-2T (zen trfc)  1.45v 45C 1.15v soc ll evga non-3090 tie ftw3 1905 0.8v 65C 270w (double fps of 1080ti) ll samsung 970 500gb nvme os ll sandisk 4tb ssd ll all nf12/14 fans ll tt gt10 case ll evga g2 1300w ll w10 pro ll 34GN850B ll x27 ll PA272w

 

9900k 1.36v 5.1avx 4.9ring 85C 195w (daily) 1.02v 4.3ghz 80w 50C R20 temps score=5500 ll D15 ll Z390 taichi ult 1.60 bios ll gskill 4x8gb 14-14-14-30-280-20 ddr3666  bdie 1.45v 45C 1.22sa/1.18 io  ll EVGA non-30 tie XC 1830//7600 0.85v 210w ll  8x nf12/14 fans 2x samsung 860 evo 500gb raid 0 ll 500gb nvme 970 evo ll Corsair graphite 780T ll EVGA P2 1200w ll Windows 10 Pro ll NEC PA242w (movie, work mon dying) 1080p 60hzll Predator X27 4k144 hdr (using at 4:4:4 98 fan is dying)

 

 

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5 hours ago, stateofpsychosis said:

I remember when I overclocked my DDR3 kit, there was a rule where you added up the first 3 timings and subtract by something to get a rough idea of what to change your tRAS to (4th timing) to save time testing.  

Is there something like that people do for DDR4?

Otherwise, I'll just spend more time working the timings and testing I guess. 

Memory overclocking is so tedious so it's worth asking anyways.

there is not really any rules tbh. i normally run c12-11-11-28 or 14-14-14-32. 

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Harrynowl's 775/771 OC and mod guide: http://linustechtips.com/main/topic/232325-lga775-core2duo-core2quad-overclocking-guide/ http://linustechtips.com/main/topic/365998-mod-lga771-to-lga775-cpu-modification-tutorial/

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8 hours ago, xg32 said:

the timings i've been using for b-die is basically the same as the b-die kits sold on newegg, but with higher speeds, 14-14-14-34 at 3466 or 3600, 15-15-15-35 at 3733, 16-16-16-36 at 4000, and 17-17-17-37 at 4133.

 

for hynix dies i'd imagine the timings are looser and not as uniformal.

 

for current cpus i like 3600-4000, if you are lucky enough for a zen+ that does 4000+, grats.

Yea, I kind of wish I would have sprung for a 3600mhz kit now.

I bought a 3200 kit for a really good deal instead.

How much of a difference would a 3600mhz kit make for gaming anyways though right?

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6 hours ago, stateofpsychosis said:

Yea, I kind of wish I would have sprung for a 3600mhz kit now.

I bought a 3200 kit for a really good deal instead.

How much of a difference would a 3600mhz kit make for gaming anyways though right?

not much honestly compared to ddr3200, 2% at most on the top end, and only if the cpu's the bottleneck (100->102fps), there's a good chance the 1% lows goes up a little.

5950x 1.33v 5.05 4.5 88C 195w ll R20 12k ll drp4 ll x570 dark hero ll gskill 4x8gb 3666 14-14-14-32-320-24-2T (zen trfc)  1.45v 45C 1.15v soc ll evga non-3090 tie ftw3 1905 0.8v 65C 270w (double fps of 1080ti) ll samsung 970 500gb nvme os ll sandisk 4tb ssd ll all nf12/14 fans ll tt gt10 case ll evga g2 1300w ll w10 pro ll 34GN850B ll x27 ll PA272w

 

9900k 1.36v 5.1avx 4.9ring 85C 195w (daily) 1.02v 4.3ghz 80w 50C R20 temps score=5500 ll D15 ll Z390 taichi ult 1.60 bios ll gskill 4x8gb 14-14-14-30-280-20 ddr3666  bdie 1.45v 45C 1.22sa/1.18 io  ll EVGA non-30 tie XC 1830//7600 0.85v 210w ll  8x nf12/14 fans 2x samsung 860 evo 500gb raid 0 ll 500gb nvme 970 evo ll Corsair graphite 780T ll EVGA P2 1200w ll Windows 10 Pro ll NEC PA242w (movie, work mon dying) 1080p 60hzll Predator X27 4k144 hdr (using at 4:4:4 98 fan is dying)

 

 

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Just now, xg32 said:

not much honestly compared to ddr3200, 2% at most on the top end, and only if the cpu's the bottleneck (100->102fps)

Yea, so pretty much just for bragging rights. The 3600 stuff was a lot more expensive here so I guess I can feel good about my purchase.

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