[SOLVED] HELP RAM Die type?

Sep 1, 2019
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Hey guys just finished my 2nd build and Im trying to learn how to OC the RAM. I have an MSI board and a ryzen 3900x so I used a ryzen RAM calculator software and it asks for the Die type of the ram but I'm not sure what it is and have had some trouble trying to figure it out. And I'm starting to think I should've gone with other RAM but I'm still very new to this.
RAM is OLOy 32GB (2 x 16GB) 288-Pin DDR4 SDRAM DDR4 3200

-Thank you for any help
 
Solution
Maybe because Oloy is new and not supported yet?
Or more likely Oloy doesn't follow industry standards for storing and reporting SPD data. Beyond those certain bits necessary to support initialization and training I don't think all SPD data is necessary, just informative.

Edit: in Tom's article on OLOy, the modules they looked at contained either SpecTec (a division of Micron) or Hynix RAM. Doesn't help with knowing exactly which variant (die revision) but it does reduce the number of guesses somewhat.
Maybe because Oloy is new and not supported yet?
Or more likely Oloy doesn't follow industry standards for storing and reporting SPD data. Beyond those certain bits necessary to support initialization and training I don't think all SPD data is necessary, just informative.

Edit: in Tom's article on OLOy, the modules they looked at contained either SpecTec (a division of Micron) or Hynix RAM. Doesn't help with knowing exactly which variant (die revision) but it does reduce the number of guesses somewhat.
 
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Solution
Sep 1, 2019
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Hmmm well thank you guys so much for the great info! 🙏

One more question...
I did originally punch into the ryzen calculator that it was Hynix and it came up with 12 for the tWTRL and in the msi bios it only allows me to set tWTRL to 9 for a max setting. Should I just set it to 9?
 
Hmmm well thank you guys so much for the great info! 🙏

One more question...
I did originally punch into the ryzen calculator that it was Hynix and it came up with 12 for the tWTRL and in the msi bios it only allows me to set tWTRL to 9 for a max setting. Should I just set it to 9?

No, don't set it to what your board is capable of, set it to what your RAM is. So whatever RAM calc told you.
 

zx128k

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Would this be the RAM in question? Desktop Memory Model MD4U163216CGDA
toms hardware
  • DDR4 3200 (PC4 25600)
  • Timing 16-18-18-36
  • Voltage 1.35V
SPD image from thaiphoon
https://slickdeals.net/forums/attachment.php?attachmentid=8692916&d=1575316645
Copyright © 2018 Chun Well Technology Holding Limited.

Source https://slickdeals.net/f/13664789-o...c4-25600-desktop-memory-99?page=3#commentsBox

Basically Samsung A-die K4AAG085WA Source page 3 from samsung's website

Overclocking,
Samsung-A-Die-Reous_B6E4F1C0824F4692B4518A81D6D17EAA.jpg

The modules could be operated up to DDR4-3800 with timings of CL18-22-22 and a voltage of 1.35 V without any problems.
https://translate.google.co.uk/translate?hl=en&tab=wT1&sl=auto&tl=en&u=https://www.hardwareluxx.de/index.php/news/hardware/arbeitsspeicher/50765-erste-samsung-a-die-module-im-handel-aufgetaucht.html

More on overclocking A-die
https://translate.google.co.uk/translate?hl=en&tab=wT1&sl=auto&tl=en&u=https://www.hardwareluxx.de/index.php/news/hardware/arbeitsspeicher/50765-erste-samsung-a-die-module-im-handel-aufgetaucht.html

I think they used 1.45 volts for the below timings. From google translate, "The higher VDIMM of 1.45 V instead of 1.35 V or 1.20 V is also noticeable here. For all IC types, this scaled with the CL value. "
16Gbit-IC-04-Haupttimings.png


16Gbit-IC-03-Timings_0F4F3EA1BDC4419A988AF794CA07FB73.jpg


Just be careful, I have never heard of this RAM brand before.
 
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Crashman

Polypheme
Former Staff
I actually downloaded that software along side the ryzen RAM calculator but the die type doesn't show up for my RAM. Not sure why.
You're probably not using it right. First of all, you have to right click and chose "Run as Administrator" for Thaiphoon.exe. Then go to the EEPROM dropdown and choose "Read SPD on SMBus #(your memory's location)". It doesn't have a problem identifying the chip maker on OLOy memory, at least not under Windows 10 64-bit. But it does have a problem getting the correct part number for SpecTek (because it reverts to Micron, the parent company).
Now, I haven't installed it on our test machine because the owner asked us not to (they don't want the credit), so I can only go by what's on one of my personal systems. But just to get the manufacturer, I didn't have to.

Here's what CPU-Z shows for the 32GB kit we tested: Micron SPD programing for the SpecTek chips.
55

And here's what CPU-Z shows for the 16GB kit we tested: An SK Hynix SPD.

56
So, if you're only looking for the manufacturer, it's there. And if you want to know more, see what I said about the other program.
 
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Sep 1, 2019
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Would this be the RAM in question? Desktop Memory Model MD4U163216CGDA
toms hardware
  • DDR4 3200 (PC4 25600)
  • Timing 16-18-18-36
  • Voltage 1.35V
SPD image from thaiphoon
https://slickdeals.net/forums/attachment.php?attachmentid=8692916&d=1575316645
Copyright © 2018 Chun Well Technology Holding Limited.

Source https://slickdeals.net/f/13664789-o...c4-25600-desktop-memory-99?page=3#commentsBox

Basically Samsung A-die K4AAG085WA Source page 3 from samsung's website

Overclocking,
Samsung-A-Die-Reous_B6E4F1C0824F4692B4518A81D6D17EAA.jpg

The modules could be operated up to DDR4-3800 with timings of CL18-22-22 and a voltage of 1.35 V without any problems.
https://translate.google.co.uk/translate?hl=en&tab=wT1&sl=auto&tl=en&u=https://www.hardwareluxx.de/index.php/news/hardware/arbeitsspeicher/50765-erste-samsung-a-die-module-im-handel-aufgetaucht.html

More on overclocking A-die
https://translate.google.co.uk/translate?hl=en&tab=wT1&sl=auto&tl=en&u=https://www.hardwareluxx.de/index.php/news/hardware/arbeitsspeicher/50765-erste-samsung-a-die-module-im-handel-aufgetaucht.html

I think they used 1.45 volts for the below timings. From google translate, "The higher VDIMM of 1.45 V instead of 1.35 V or 1.20 V is also noticeable here. For all IC types, this scaled with the CL value. "
16Gbit-IC-04-Haupttimings.png


16Gbit-IC-03-Timings_0F4F3EA1BDC4419A988AF794CA07FB73.jpg


Just be careful, I have never heard of this RAM brand before.

Yup! That's the exact RAMi have in there my friend. Okay so I should be using the calculator timings for A die you think?

Although I'm still confused as to how I'm gonna set the tWTRL to any higher that 9 because that's the only option my MSI x570 gaming plus Mobo gives me.
 

zx128k

Reputable
Yup! That's the exact RAMi have in there my friend. Okay so I should be using the calculator timings for A die you think?

Although I'm still confused as to how I'm gonna set the tWTRL to any higher that 9 because that's the only option my MSI x570 gaming plus Mobo gives me.

There appears to be different IC's used by Oloy for their RAM, use Thaiphoon Burner to find out which one's you have. If you are unsure, just post a screenshot here. You can use the website https://imgbb.com/upload to upload the image, just drag and drop the file to the webpage. Once the upload is complete, just post the link here. Do not assume I am right.
 
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zx128k

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It looks like Samsung A-die. That part number K4AAG085W? can be found in a pdf on samsung's website. Source page 3 from samsung's website Part numder K4AAG085WA, speed VF/WE and PKG 78 ball FBGA. The pdf states A-die. 16GB and 32GB Density.

Speed
VF: DDR4-2933 (1466MHz @ CL=21, tRCD=21, tRP=21)
WE : DDR4-3200 (1600MHz @ CL=22, tRCD=22, tRP=22)

I have no experience overclocking A-die but the OP can try the settings from www.hardwareluxx.de. Just be careful.
 
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It looks like Samsung A-die. That part number K4AAG085W? can be found in a pdf on samsung's website. Source page 3 from samsung's website Part numder K4AAG085WA, speed VF/WE and PKG 78 ball FBGA. The pdf states A-die. 16GB and 32GB Density.

Speed
VF: DDR4-2933 (1466MHz @ CL=21, tRCD=21, tRP=21)
WE : DDR4-3200 (1600MHz @ CL=22, tRCD=22, tRP=22)

I have no experience overclocking A-die but the OP can try the settings from www.hardwareluxx.de. Just be careful.
Also because when its a B-die, Thaiphoon shows B-die and not Monolithic 78-ball FBGA.
Ryzen RAM calculator never worked for me, I tried Faster timings and my PC stopped booting.

The Safe settings are not worth it as they barely increase perofrmance.
Maybe Ryzen RAM Calculator was designed for Samsung B-die only.
 
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zx128k

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At least they have a chance of hitting 3800, even if the timings are not as good as b-die. I believe the website used 1.45 volts (can't find the datasheet so can't confirm as safe). Every RAM kit tends to be a little different timings wise when overclocking.



Can't find the A-die datasheet, to get the maximum DC voltages. I can find the B-die one easy enough, B-die DC maximums page 12
 
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Sep 1, 2019
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Also because when its a B-die, Thaiphoon shows B-die and not Monolithic 78-ball FBGA.
Ryzen RAM calculator never worked for me, I tried Faster timings and my PC stopped booting.

The Safe settings are not worth it as they barely increase perofrmance.
Maybe Ryzen RAM Calculator was designed for Samsung B-die only.

Ooohh okay! Good thing you guys know your <Mod Edit> lol. This is a big learning curve for me but I'm tryin.
 
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Sep 1, 2019
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At least they have a chance of hitting 3800, even if the timings are not as good as b-die. I believe the website used 1.45 volts (can't find the datasheet so can't confirm as safe). Every RAM kit tends to be a little different timings wise when overclocking.



Can't find the A-die datasheet, to get the maximum DC voltages. I can find the B-die one easy enough, B-die DC maximums page 12

So when it comes to my bios only letting me set the tWTRL to a max of 9 what would you guys suggest there?
 

zx128k

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Is there an option for Samsung A-die in the calculator, the last time I checked there was none. I found that there was a point were a lower value would stop the system from booting. The CMOS reset switch is going to be your best friend.

Timing​
Safe​
Tight​
Extreme​
tWTRS tWTRL​
4 12​
4 8​
-​

I start tuning my B-die at 1.4 volts, took me awhile to research what was considered as safe. The JEDEC standard on wiki for DDR4 is 1.2-1.4 volts. https://en.wikipedia.org/wiki/DDR4_SDRAM

Also we are random people on a forum helping each other, don't consider us experts without proof.

You will need to run memtest, a usb stick is the easiest way. Aida64 can help with making sure that the IF is stable.

 
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