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x370 Taichi & Corsair

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Fuad View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fuad Quote  Post ReplyReply Direct Link To This Post Topic: x370 Taichi & Corsair
    Posted: 14 Aug 2017 at 4:11am
Hello,

I'm about to get x370 Taichi, and I already have 4X4 16GB:
corsair DDR4 cmk16gx4m4a2666c15r
http://www.corsair.com/en-us/vengeance-lpx-16gb-4x4gb-ddr4-dram-2666mhz-c15-memory-kit-red-cmk16gx4m4a2666c15r

I had those with my X99 pc that recently died, they have 2 xmp profiles: 2666 and 2800
will they work with x370 taichi and hopefully at 2800 MHZ?

Thanks!
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nangu View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote nangu Quote  Post ReplyReply Direct Link To This Post Posted: 14 Aug 2017 at 4:22am
Check the memory QVL here for the Taichi: http://www.asrock.com/mb/AMD/X370%20Taichi/index.asp#Memory

Anyway, you can try before purchasing new memory, but XMP settings on those are for Intel processors, so is not guaranteed it can boot out of the box at OC settings on Ryzen. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fuad Quote  Post ReplyReply Direct Link To This Post Posted: 14 Aug 2017 at 5:33am
Originally posted by nangu nangu wrote:

Check the memory QVL here for the Taichi: http://www.asrock.com/mb/AMD/X370%20Taichi/index.asp#Memory

Anyway, you can try before purchasing new memory, but XMP settings on those are for Intel processors, so is not guaranteed it can boot out of the box at OC settings on Ryzen. 


Thanks Nangu, I did check it before posting and did not find my model, but what I don't understand is that the ram are DDR4, why wouldn't they work?
I don't have time to order a board and test my rams and then find out they are not working and then wait again for new ones to arrive, so in your opinion what are my odds?
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Fuad View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fuad Quote  Post ReplyReply Direct Link To This Post Posted: 14 Aug 2017 at 5:37am
Also, kindly any recommendation for compatible low profile 32GB ram?
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Post Options Post Options   Thanks (1) Thanks(1)   Quote parsec Quote  Post ReplyReply Direct Link To This Post Posted: 14 Aug 2017 at 10:52am
Originally posted by Fuad Fuad wrote:

Originally posted by nangu nangu wrote:

Check the memory QVL here for the Taichi: http://www.asrock.com/mb/AMD/X370%20Taichi/index.asp#Memory

Anyway, you can try before purchasing new memory, but XMP settings on those are for Intel processors, so is not guaranteed it can boot out of the box at OC settings on Ryzen. 


Thanks Nangu, I did check it before posting and did not find my model, but what I don't understand is that the ram are DDR4, why wouldn't they work?
I don't have time to order a board and test my rams and then find out they are not working and then wait again for new ones to arrive, so in your opinion what are my odds?


If only all DDR memory was so generic that it could work with any system! DDR3 memory is not generic enough to work with every system that uses it.

The memory controller which is part of the CPU has specifications for the memory chips used in memory modules. Those specifications are a bit complex, and is something we rarely see besides in datasheets that might be available from a memory manufacture, and the processor manufacture. Normally memory is sold as compatible with a board's chipset, like X99, which also includes the compatible processors. So the memory is matched to those memory controllers. Not that each processor has different memory chip requirements, but that is only one part of memory compatibility.

Also, define what it means for memory to work with a platform? Your memory will most likely work at its default speed with Ryzen, which for X99 memory is 1866 - 2133. But it is less likely that it will work at higher speeds, and once in the Ryzen memory OC territory, over 2667, that's when it is much less likely to work. Just read some of the many threads in this forum about Ryzen memory compatibility and issues over clocking memory on Ryzen. That is the main issue we have with Ryzen.

You said you wanted to use 32GB of memory, but did not specify a speed. Does that matter to you?

Here's an unofficial website that matches existing memory with Ryzen chipset boards:

https://rymem.vraith.com/

Here's one from AMD: https://www.amd.com/system/files/2017-06/am4-motherboard-memory-support-list-en_0.pdf

And of course your board's memory QVL list:

http://www.asrock.com/mb/AMD/X370%20Taichi/index.asp#Memory

I am very reluctant to suggest a model of memory for Ryzen to anyone, mainly because the maximum speed it will reach is such a variable that cannot be accurately predicted, mainly for memory over clocks, but in general too.

One main hint is memory that uses Samsung B-die memory chips works best with Ryzen. Next, the more memory you use (over 16GB), the more difficult it is to have it at a faster, over clocked speed. All memory speeds above 2667 are memory over clocks for Ryzen processors, and are not guaranteed. If you can run memory at 3200 with Ryzen, you are doing very well. Beyond 3200 is extremely good, and rare. 2933 is a common limit for many Ryzen users, with 16GB of memory. My G.SKILL 3200 FlareX 16GB (2 x 8GB) memory, designed for Ryzen, will not easily work above 2933.

Without knowing what type of memory chips your X99 DDR4 memory uses, and the speed you want, estimating the odds of it working without any other information (ie, other users experience) is simply a guess. The lists I provided above are the best we have currently. Most if not all memory manufactures have not updated their existing, older memory product's information as compatible with Ryzen.
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Fuad View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fuad Quote  Post ReplyReply Direct Link To This Post Posted: 14 Aug 2017 at 2:25pm
Thanks Parsec for the great explanation & links, for me if I can get the ram kit work & stable at around 29** Mhz I will be happy.
The problem I am facing is that I am constrained to low profile ram because of my cooler, the only available options I have in my place are:

1- HyperX Predator 32GB (16 x 2) HX424C12PB3K2/32 DDR4 2400Mhz CL12:   318 euro
Listed in Taichi compatibility list
2- HyperX Predator 32GB (16 x 2) HX424C15FBK2/32   DDR4 2400Mhz CL15:   277 euro
Listed in Taichi compatibility list
3- HyperX Predator 32GB (16 x 2) HX426C13PB3K2/32 DDR4 2666Mhz CL13:   324 euro
Listed in Taichi compatibility list
4-
HyperX Predator 32GB (16 x 2) HX426C16FBK2/32    DDR4 2666Mhz CL16:  300 euro
Listed in Taichi compatibility list

5-
HyperX Predator 32GB (16 x 2) HX430C15PB3K2/32  DDR4 3000Mhz CL15:  313 euro
UNLISTED in Taichi compatibility list, same model but 16GB is listed.

6- Corsair vengeance lpx 32GB (16 x 2)
CMK32GX4M2B3000C15 DDR4 3000Mhz CL15: 280 euro
UNLISTED in Taichi compatibility list

These are all the options I have, please help me decide (I will not hold you any responsibility) at least you know better than me.
Thanks!
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Post Options Post Options   Thanks (1) Thanks(1)   Quote datonyb Quote  Post ReplyReply Direct Link To This Post Posted: 15 Aug 2017 at 2:08am
as a suggestion

will the gskill trident z clear your cooler ? (im pretty confident its lower profile than those hyperx rams)

i am using 2 x 8 gb 3200 cl15 and its been very very stable since day one bios version 1.5 onwards (on my taichi)
[url=https://valid.x86.fr/jpg250][/url]

3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold
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Fuad View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fuad Quote  Post ReplyReply Direct Link To This Post Posted: 15 Aug 2017 at 2:32am
Thanks Datonyb, can you post the model number?

Edit: how about these?
https://www.gskill.com/en/product/f4-3000c15d-32gtz


Edited by Fuad - 15 Aug 2017 at 2:50am
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datonyb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote datonyb Quote  Post ReplyReply Direct Link To This Post Posted: 15 Aug 2017 at 4:18am
well to be fair none of us is brave enough to state for 100% sure fully compatable ram
allthough what we have learned is
the most sucessful ram seems to be brands containing samsung dies/chips and of them the chips labelled samsung E dies

you wont get these in 16 gb stick is seems, also to be certain of samsung b dies with gskill ram
it seems you need to choose 3200mhz and faster and the timing/latency of cl15 or cl14
sounds confusing not really its because samsumg make the nicest chips for ram so the faster ram with lower latency tends to need samsung dies....

the model number of my ram is
f4-c3200cl15-16gtz  this is a 2 x 8gb set though so only 16 gb
another guy near me also has exact same ram kit and shares the same if not better experiance with them
if i were to offer my best advice
that would be
gskill tridentz ram or flarex
or *GOOD*  team group ram (overclockers uk has been having reliable results using these in there kits)
[url=https://valid.x86.fr/jpg250][/url]

3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold
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datonyb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote datonyb Quote  Post ReplyReply Direct Link To This Post Posted: 15 Aug 2017 at 4:26am
ive just checked on rymem website
(this is a database of actual users and there results)
and this guys using these ram kits/sticks got 3200 cl14 with 32gb

F4-3200C14-16GTZ  (this is the software reported identity number of each stick)
the actual kit should be labelled retail as
f4-c3200cl14-32gtz 
validation link .........
http://valid.x86.fr/beqes1
https://rymem.vraith.com/detailed_ram/737
[url=https://valid.x86.fr/jpg250][/url]

3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold
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