09-19-2016 02:00 AM - last edited on 03-05-2024 07:46 PM by ROGBot
09-19-2016 02:09 AM
09-19-2016 04:45 AM
Nate152 wrote:
Hi GameSX
It seems there must have been a shortage of Samsung memory as to why they used Micron memory on the later ones. I was reading the same thing that the Micron memory doesn't overclock as well as the Samsung memory.
https://www.reddit.com/r/nvidia/comments/4upfxo/for_new_gtx_1070_owners_out_there_out_of/
09-19-2016 03:29 AM
09-20-2016 03:19 AM
09-20-2016 04:47 AM
Zaveur wrote:
Strange thing for me, I have Maximus VIII Hero and a ROG STRIX-GTX1070-8G-GAMING. In BIOS my my ROG STRIX-GTX1070-8G-GAMING reports Samsung memory BUT with GPU Z 1.10 and 1.11 it say Micron... Whats up with this?
09-20-2016 05:42 AM
GamerSX wrote:
Very interesting observation, i just checked mine, having the same exact card installed, in my BIOS it says Samsung as well, while in GPU-Z it says Micron ...
I think what is happening is that Samsung Memory is the ORIGINAL specification provided by Nvidia for the GTX 1070, so the string "Samsung" is a fixed string in either the vBIOS of the card originally supplied by Nvidia or the ASUS Motherboard's BIOS that the motherboard just display without doing any actual IC identification test.
Also if you check the BIOS description for the versions that came with the Micron cards in TechPowerUp BIOS database
For the non-OC version https://www.techpowerup.com/vgabios/185349/asus-gtx1070-8192-160711
And the OC-Version https://www.techpowerup.com/vgabios/185940/asus-gtx1070-8192-160711-2
You will find that:
Memory Support
GDDR5, Samsung
GDDR5, Micron
The motherboard displays "Samsung" by default regardless of the actual ICs used as Micron was only supposed to be used as an alternative but is not the original specification.
GPU-Z on the other hand seems to have an actual memory detection engine that is able to identify memory type properly and therefore GPU-Z is the correct one
I can also confirm that the card i have which is identical to yours (even though it displays Samsung in BIOS) has Micron memory because of its behavior, Micron crashes after a black/flickering artifacts with a white checkerboard pattern that leads to loss of video signal or a BSOD and then a restart after memory dump.
Samsung memory crashes with red and green flashing artifacts without any system crashes, you just get "Display Driver Stopped Responding and Has Recovered" error and the display adapter keeps recovering and crashing until you lower the memory frequency.
So you actually have Micron memory and the BIOS is just displaying standard dummy text based on original specification!
Which is even more reason that ASUS should tell us why they changed to Micron from Nvidia's Samsung original specification, and why the change has not been publicly announced? also cards with Micron memory should be clearly marked on the retail packaging so we would know what type of quality and performance level we are buying before committing to a purchase, since memory type is part of the cards' specifications just like the GPU type, clock frequencies or cooler type!
09-20-2016 06:37 AM
09-20-2016 07:00 AM
GamerSX wrote:
Great, how did you manage to get one with Samsung? is that an old or new batch? any idea when did the store get it in stock?
Serial numbers i have seen start with G6 , G7 and G8 probably reflecting batch or run numbers, G6 being June/July cards, G7 being August cards and G8 being September cards (that is an assumption based on the cards i have handled)
So lets see what i have:
1- Samsung Serial starts with G6 purchased middle of July, retailer had it in stock on 7-7-2016 ... serial ends with (after the letters) 129XXX with check number 35XX
2- Samsung Serial starts with G7 purchased beginning of August, serial ends with 029XXX with check number 99XX (that was a golden sample top performing card 2113Mhz Core and 9400Mhz memory without any issues it ran a little hot around 71c under load and PCB was bent a little)
3- Micron Serial starts with G8 purchased end of August, serials ends with 143XXX with check number 27XX
4- Micron Serial starts with G7 purchased one week ago, serial ends with 200XXX with check number 40XX (That one has very loud coil vibration noise or Coilwhine and is going back to store!)
You had a Micron that started with 006XXX? that is pretty strange because that is supposed to be even an earlier production that my two Samsung samples (when did you purchase that one?), and then now you have a 108XXX sample, that looks to be produced before my two 143XXX and 200XXX Microns, so looks like that was produced right before they switched to Micron, you are lucky 🙂
So from these 6 data points we have, production patterns seems to have went from Micron -> to Samsung -> to Micron again?
or it might just be random, sometimes they use Samsung and some other times they use Micron? or so it has been in the past? now around probably their 130,000 unit they switched exclusively to Micron moving forward?
Check numbers appear to be totally random, what is that check number is for anyways? do you have an idea?
09-20-2016 07:20 AM
Zaveur wrote:
Hi again 🙂
Well my Micron that i returned was a G9 and they had a G7 so thats how I have Samung mem card 🙂 G7 with 108xxx, maybe this is just a lotteri and what country..
One note, micron card were running stock (game mode) at 72c load but the new and probably and old batch they had in stock, new card runs at 66 full load. Nothing changed in my pc.
No idea about that check nr though..