Hi,
ok in your last post you are in the right menu for VCCIO and VCCSA voltage please reduce them now:
VCCIO=1.15
VCCSA= 1.25V
should be more than enough for 3600mhz/3700mhz , please check and test if you can go higher than 3700mhz
maybe you can make some screenshots from the bios ram timings @3700mhz
(and please don`t OC your cpu/uncore while testing new ddr4 clockrates)
in the pic i marked the voltages and they are extreme high - IMO too high and maybe over time little bit dangerous -
for coffee lake cpu`s is a max recommended from 1.25V VCCIO and 1.30V VCCSA - and some pages say 1.20V and 1.25V
most times VCCSA should be 0.05V higher than VCCIO, sometimes it s better if VCCSA is 0.10V higher than VCCIO and sometimes they have to be equal.
1.4V for VDIMM is ok, also 1.45V - if we get your ram running on the desired clockrate you can reduce it and test for stability
-> 32GB (8GBx4) 3733MHz F4-3733C17Q-32GTZKK
i can`t find 2x16gb in the QVL, i know DoubleSided DIMMS are more tricky with the timings and maybe you can`t reach very high clock rates and of course your timings are little bit higher.
so i think that is why ASUS want you to use 4 sticks single sided
"Would one of the 2 you rams just mentioned be better than mine" not really, maybe little bit higher bandwith - if we can`t hit 4000mhz i think they will be better because i am sure 4x8gb will reach it
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Help overclocking F4-4000C19D-32GTZR on asus maximux XI extreme with i9 9900k
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Thank you so so much!
Finally a qualified and educated on the matter person that can help out !
What I have right now is 2× 16 GB = 32gb at 3700 mhz at timing 19
Would one of the 2 you rams just mentioned be better than mine ( mine after played with the bios and brought it to 4000 MHz and lowering the timing) ?
https://www.gskill.com/en/product/f4-3733c17q-32gtzr
https://www.gskill.com/en/product/f4-3733c17q-32gtzsw
Would 2 x 16gb be worse than 4 x 8gb ?
Also asus just replied to me and suggested this ram among all the ones I mentioned you and based on the issues I told them
32GB (8GBx4) 3733MHz F4-3733C17Q-32GTZKK
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The memory controller is within your i7 9900k, your (one of the best) mainboard offers the "infrastructure"
your bios will try to establish stable communication between your memory controller and your ram
these will happen by "ram training" your bios will try to find working timings (of course stored timings in your RAM for example XMP Profile1 will be used, these are all primary and some secondary timings and zero tertiary timings)
maybe
GSKILL TECH
can answer the question if memory kits/modules which are on the QVL list have usable timings stored in the bios already...
if your i7 9900k needs "special treatment" for vccio and vccsa, QVL listed memory will probably fail too working with higher clockrates than 3700MHz
i don`t know if there is a logic behind the "auto" voltage setting or if it simple raise it with higher clock rates
as i know 4 DIMMS and double ranked DIMMS means more problems with higher clock rates and lower timings
my experience is limited to Z97 G.Skill Ripjaws DDR3-2400@2600MHz 11 13 13 31 @ i7 4790k and G.Skill Trident Z DDR4-4133 19 19 19 39 on Z370 Gigabyte Board @3866MHz 16 16 16 30 and Z370 ASRock Board @4133 17 17 17 32 and i7 8700k
atm i think your kit will work with 4000 and better timings than advertised
for future it makes sense to buy a 32gb kit
which one i would choose,
https://www.gskill.com/en/product/f4-3733c17q-32gtzr // https://www.gskill.com/en/product/f4-3733c17q-32gtzsw
or if you want to be on the safe side "plug and play":
https://www.gskill.com/en/product/f4-3600c17q-32gtzr
i think the 3600 kit will run on ~4000 too if you spend time in ram tuning and you don`t fear >1.4V VDIMM
Last edited by hq-hq; 01-02-2019, 09:23 AM.
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Originally posted by hq-hq View Postok, please read out the VCCIO and VCCSA voltage @XMP profile with 3700MHz (you can do this with HWiNFO64 "sensors" look there for your mainboard, maybe ASUS AI Suite will work too)
please post the values
in the meanwhile please find the option to change them in your bios - should be here: "CPU Core/Cache Voltage"
( if it is easy to change the ram sticks you can try to get F4-4133C19D-16GTZR or F4-4000C17D-16GTZR, do you want 32 gig now or maybe later please check the list if the 32gb kit of the choosen 16gb kit is in the list too... )
From this list below
https://dlcdnets.asus.com/pub/ASUS/m...184.1545942982
the 1st 64 (4 x16 gb) bank that come up is this:
http://gskill.com/en/product/f4-3733c17q-64gtzsw
https://www.newegg.com/Product/Produ...82E16820236285
and the 32gb are these:
https://www.gskill.com/en/product/f4-4000c18q-32gtz
https://www.gskill.com/en/product/f4-4000c17q-32gtzr
https://www.gskill.com/en/product/f4-3866c18q-32gtzr
https://www.gskill.com/en/product/f4-3733c17q-32gtzsw
https://www.gskill.com/en/product/f4-3733c17q-32gtzr
https://www.gskill.com/en/product/f4-3600c17q-32gtzr
https://www.gskill.com/en/product/f4-3466c16q-32gtzr
https://www.gskill.com/en/search?key...3400C16D-32GTZ
https://www.gskill.com/en/product/f4-3333c16d-32gtzb
I am still confused about the mhz.
What I should go for ? I mean they claim these are compatible with the asus motherboard but if we use banks with too high MHz we encounter problems?
Which one should I get?
I want the best with no issue .
if I have to get something similar to what I have and encounter the same issues, it might not be worthed .
Can I go better with 4 compared to the 2 I have right now ?Last edited by marcolisi; 01-02-2019, 07:25 AM.
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ok, please read out the VCCIO and VCCSA voltage @XMP profile with 3700MHz (you can do this with HWiNFO64 "sensors" look there for your mainboard, maybe ASUS AI Suite will work too)
please post the values
in the meanwhile please find the option to change them in your bios - should be here: "CPU Core/Cache Voltage"
( if it is easy to change the ram sticks you can try to get F4-4133C19D-16GTZR or F4-4000C17D-16GTZR, do you want 32 gig now or maybe later please check the list if the 32gb kit of the choosen 16gb kit is in the list too... )
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Originally posted by hq-hq View Posti7-9900k stock is DDR4-2666
so 4000 is a huge overclock, that is why you have to boost the IO and SA voltage, 0.95V and 1.05V is not enough for that OC
and remember, stock DDR4-2666 voltage is 1.2V your sticks of ddr4-4000 RAM have 1.35V - other buy cheaper and with higher voltage they reach 4000mhz too
it can happen that the auto adjustment of VCCIO and VCCSA (and sometimes VDIMM) is much to high - can lead to stability problems
with 4 sticks or 2 sticks dual rank you run in more trouble for higher clock rates and fast memory timings
i would say your choice was a good one, now you have to play a little bit with the voltages and clock rates to learn what is to do to get it running
-> for plug and play you should read Qualified Vendors List of your mainboard next time -> https://www.asus.com/Motherboards/RO.../HelpDesk_QVL/
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Originally posted by hq-hq View Posti7-9900k stock is DDR4-2666
so 4000 is a huge overclock, that is why you have to boost the IO and SA voltage, 0.95V and 1.05V is not enough for that OC
and remember, stock DDR4-2666 voltage is 1.2V your sticks of ddr4-4000 RAM have 1.35V - other buy cheaper and with higher voltage they reach 4000mhz too
it can happen that the auto adjustment of VCCIO and VCCSA (and sometimes VDIMM) is much to high - can lead to stability problems
with 4 sticks or 2 sticks dual rank you run in more trouble for higher clock rates and fast memory timings
i would say your choice was a good one, now you have to play a little bit with the voltages and clock rates to learn what is to do to get it running
-> for plug and play you should read Qualified Vendors List of your mainboard next time -> https://www.asus.com/Motherboards/RO.../HelpDesk_QVL/
you have any suggestion from the list of compatible ram?
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i7-9900k stock is DDR4-2666
so 4000 is a huge overclock, that is why you have to boost the IO and SA voltage, 0.95V and 1.05V is not enough for that OC
and remember, stock DDR4-2666 voltage is 1.2V your sticks of ddr4-4000 RAM have 1.35V - other buy cheaper and with higher voltage they reach 4000mhz too
it can happen that the auto adjustment of VCCIO and VCCSA (and sometimes VDIMM) is much to high - can lead to stability problems
with 4 sticks or 2 sticks dual rank you run in more trouble for higher clock rates and fast memory timings
i would say your choice was a good one, now you have to play a little bit with the voltages and clock rates to learn what is to do to get it running
-> for plug and play you should read Qualified Vendors List of your mainboard next time -> https://www.asus.com/Motherboards/RO.../HelpDesk_QVL/
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Originally posted by hq-hq View Post4000+ should be possible...
what i would do first is not using XMP Profile and set voltage for VCCIO and VCCSA.
In my case VCCSA jumps with XMP Profile to 1.35V - too high VCCSA can cause stability problems
depending on your CPU (memory controller), Board and RAM you have to find working voltage for VCCIO and VCCSA, sometimes it is good if they have the same level, in my case i need VCCSA >70mV than VCCIO
For beginning i would check how far you can get with VCCIO and VCCSA @Stock voltage (should be 0.95 and 1.05V) but set them by yourself - do not use "auto" and after that you can use XMP Profile and start with let`s say 2933MHz - then give more speed until you get stability problems. I think you will need ~1.05V VCCIO and ~1.15V for 3700MHz, or maybe 1.00V and 1.10V or 1.15V and 1.15V.
If pc is booting and windows starts with 4000MHz next step testing the ram with the tool memtest - i would say open it 8 times (or 16 times) and give every memtest 1500mb to test. let them run up to 200% and an error is not allowed. stable voltage setting -> reducing secondary and tertiary timings for higher bandwith and lower latency. for checking this you need aida64xtreme and do the ram bandwith and latency benchmark. and of course you need memtest again for testing if your new timings are stable. uncore OC means also testing with memtest, higher uncore clock means lower ram latency.
your kit should be single ranked - good for high oc - you can check for B-Die BGAs and if it is single ranked with thaiphoon burner
(for 24/7 use i would not go above 1.25V VCCIO and 1.30V VCCSA)
I can't even reach 4000 mhz by stock ....
My pc does not boot if the ram is set past 3700 mhz
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4000+ should be possible...
what i would do first is not using XMP Profile and set voltage for VCCIO and VCCSA.
In my case VCCSA jumps with XMP Profile to 1.35V - too high VCCSA can cause stability problems
depending on your CPU (memory controller), Board and RAM you have to find working voltage for VCCIO and VCCSA, sometimes it is good if they have the same level, in my case i need VCCSA >70mV than VCCIO
For beginning i would check how far you can get with VCCIO and VCCSA @Stock voltage (should be 0.95 and 1.05V) but set them by yourself - do not use "auto" and after that you can use XMP Profile and start with let`s say 2933MHz - then give more speed until you get stability problems. I think you will need ~1.05V VCCIO and ~1.15V for 3700MHz, or maybe 1.00V and 1.10V or 1.15V and 1.15V.
If pc is booting and windows starts with 4000MHz next step testing the ram with the tool memtest - i would say open it 8 times (or 16 times) and give every memtest 1500mb to test. let them run up to 200% and an error is not allowed. stable voltage setting -> reducing secondary and tertiary timings for higher bandwith and lower latency. for checking this you need aida64xtreme and do the ram bandwith and latency benchmark. and of course you need memtest again for testing if your new timings are stable. uncore OC means also testing with memtest, higher uncore clock means lower ram latency.
your kit should be single ranked - good for high oc - you can check for B-Die BGAs and if it is single ranked with thaiphoon burner
(for 24/7 use i would not go above 1.25V VCCIO and 1.30V VCCSA)Last edited by hq-hq; 01-01-2019, 11:52 AM.
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Originally posted by GSKILL TECH View PostSlot 1 and 2 away from CPU? Should be installed in 2 and 4 away from CPU.
If only using one module, it should be in slot 2.
This is the farthest this ram can go on my pc.
What is the best gskill ram to purchase for my pc for 32 or 64 GB? I do not think this ram I have is compatible and hence not fully used by my pc3 Photos
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Slot 1 and 2 away from CPU? Should be installed in 2 and 4 away from CPU.
If only using one module, it should be in slot 2.
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