Featuring RX 470 Nitro 4Gb:
EDIT: This is sporting sony87 ROM so all the credit goes to him!
Topic: Hashrate RX 470 - page 19. (Read 135025 times)
For all the haters on Elpida memory out there:
Featuring RX 470 Nitro 4Gb:
EDIT: This is sporting sony87 ROM so all the credit goes to him!
Featuring RX 470 Nitro 4Gb:
EDIT: This is sporting sony87 ROM so all the credit goes to him!
Hi,
I have Sapphire Nitro RX 470 OC 8GB with Samsung memory.
When I took bios with gpuz, or atiwinflash, I see this weird values.
http://imgur.com/a/Afz2z
VRAM is witten with weird characters, and GPU voltages after 466MHz are ridiculously high,
is it safe to modify and flash this bios?
cheers
I have Sapphire Nitro RX 470 OC 8GB with Samsung memory.
When I took bios with gpuz, or atiwinflash, I see this weird values.
http://imgur.com/a/Afz2z
VRAM is witten with weird characters, and GPU voltages after 466MHz are ridiculously high,
is it safe to modify and flash this bios?
cheers
Its for the whole system like he mentioned.
You get 4.5W/MHS if you do ETH only and you apply the strap bios hack and undervolt your core voltage to like 0.90V
You get like 6W/MHS if you dual ETH+SIA.
Doesnt matter if its the 4GB or 8GB, you get the exact same consumption. These are very efficient GPUs.
You get 4.5W/MHS if you do ETH only and you apply the strap bios hack and undervolt your core voltage to like 0.90V
You get like 6W/MHS if you dual ETH+SIA.
Doesnt matter if its the 4GB or 8GB, you get the exact same consumption. These are very efficient GPUs.
Does anyone know what memory manufacturer MSI cards have?
I think its all Hynix. i got 12 RX 470 4G and it's all Hynix
A couple of question about MSI 470 4G:
1) Do you modded the bios, and how exactly.
2) How much MHS on average?
There seems to be a lot of info about the Sapphire nitro, but not the MSI.
I did 1130/auto core moved memory 2000/955 and copied 1500 strap
Doing 28-29mhs 5 cards 140mhs total at 820watts at wall
Is it easy to apply the 1500 strap? Is the MSI dual bios?
No they dont have dual bios. Yes It's very easy to apply the 1500 strap. I set mine at 1030core/1900 memory becuase my asic quality is only 58-62. I am getting 27mh each with 5 cards i am pulling 600 watt from the wall using a 750 watt Seasonic powersupply. I am thinking about adding a 6 but i dont want to overload my 750 psu, i want to keep it at 80% usage.
600 watt total system draw? Is it stable?
If it is can you share that bios mod?
No they dont have dual bios. Yes It's very easy to apply the 1500 strap. I set mine at 1030core/1900 memory becuase my asic quality is only 58-62. I am getting 27mh each with 5 cards i am pulling 600 watt from the wall using a 750 watt Seasonic powersupply. I am thinking about adding a 6 but i dont want to overload my 750 psu, i want to keep it at 80% usage.
Thank you so much for your detailed informations !
600W is whole system watt usage or gpu's?
In both cases it's a nice result
Does anyone know what memory manufacturer MSI cards have?
I think its all Hynix. i got 12 RX 470 4G and it's all Hynix
A couple of question about MSI 470 4G:
1) Do you modded the bios, and how exactly.
2) How much MHS on average?
There seems to be a lot of info about the Sapphire nitro, but not the MSI.
I did 1130/auto core moved memory 2000/955 and copied 1500 strap
Doing 28-29mhs 5 cards 140mhs total at 820watts at wall
Is it easy to apply the 1500 strap? Is the MSI dual bios?
No they dont have dual bios. Yes It's very easy to apply the 1500 strap. I set mine at 1030core/1900 memory becuase my asic quality is only 58-62. I am getting 27mh each with 5 cards i am pulling 600 watt from the wall using a 750 watt Seasonic powersupply. I am thinking about adding a 6 but i dont want to overload my 750 psu, i want to keep it at 80% usage.
Does anyone know what memory manufacturer MSI cards have?
I think its all Hynix. i got 12 RX 470 4G and it's all Hynix
A couple of question about MSI 470 4G:
1) Do you modded the bios, and how exactly.
2) How much MHS on average?
There seems to be a lot of info about the Sapphire nitro, but not the MSI.
I did 1130/auto core moved memory 2000/955 and copied 1500 strap
Doing 28-29mhs 5 cards 140mhs total at 820watts at wall
Is it easy to apply the 1500 strap? Is the MSI dual bios?
Does anyone know what memory manufacturer MSI cards have?
I think its all Hynix. i got 12 RX 470 4G and it's all Hynix
A couple of question about MSI 470 4G:
1) Do you modded the bios, and how exactly.
2) How much MHS on average?
There seems to be a lot of info about the Sapphire nitro, but not the MSI.
I did 1130/auto core moved memory 2000/955 and copied 1500 strap
Doing 28-29mhs 5 cards 140mhs total at 820watts at wall
Edit: https://m.imgur.com/a/VKlYY
Imagine of the rig 7 hours in. The low card is a asus strix it doesn't like being main card at those stats above
Does anyone know what memory manufacturer MSI cards have?
I think its all Hynix. i got 12 RX 470 4G and it's all Hynix
A couple of question about MSI 470 4G:
1) Do you modded the bios, and how exactly.
2) How much MHS on average?
There seems to be a lot of info about the Sapphire nitro, but not the MSI.
Does anyone know what memory manufacturer MSI cards have?
I think its all Hynix. i got 12 RX 470 4G and it's all Hynix
Does anyone know what memory manufacturer MSI cards have?
guys give me the exact link to download the rom for 470 rx nitro 8gb?
because I have already ruined a bios video card, and I would not want to spoil the last one left.
After I show you what I did to change mod
You can fix it by flashing stock back to it. Even if I wanted to, I CAN'T give you a VBIOS guaranteed to work with it unless I had the stock one.
I tried it again flashing the original ROM, but if I put only the GPU remains black screen
Does it hash as a secondary GPU?
no no, the gpu rx 470 nitro, with 2 fans, has 2 bios, you know you have a small lever,
1 of these bios does not go, the screen remains black,
Here's what you do. Flip it to the working one. Boot Windows. WHILE RUNNING, flip the switch to the broken VBIOS. Flash stock to it. All fixed.
thanks a lot wolf0, so I will, go because you have already been 2 users to tell me the same thing, so now I'm much calmer, I just have to find a reliable rom for my 470 8gb no ref, and even 480 ref 8gb
I found this procedure to be a user of this forum, tomorrow or Friday that I am free to try, let's see if I can recover the corrupt bios
switch to working bios. boot in windows. flip the switch on the video card back to non working bios. flash backup rom with atiflash.
switch to working bios. boot in windows. flip the switch on the video card back to non working bios. flash backup rom with atiflash.
guys give me the exact link to download the rom for 470 rx nitro 8gb?
because I have already ruined a bios video card, and I would not want to spoil the last one left.
After I show you what I did to change mod
You can fix it by flashing stock back to it. Even if I wanted to, I CAN'T give you a VBIOS guaranteed to work with it unless I had the stock one.
I tried it again flashing the original ROM, but if I put only the GPU remains black screen
Does it hash as a secondary GPU?
no no, the gpu rx 470 nitro, with 2 fans, has 2 bios, you know you have a small lever,
1 of these bios does not go, the screen remains black,
guys give me the exact link to download the rom for 470 rx nitro 8gb?
because I have already ruined a bios video card, and I would not want to spoil the last one left.
After I show you what I did to change mod
You can fix it by flashing stock back to it. Even if I wanted to, I CAN'T give you a VBIOS guaranteed to work with it unless I had the stock one.
I tried it again flashing the original ROM, but if I put only the GPU remains black screen
guys give me the exact link to download the rom for 470 rx nitro 8gb?
because I have already ruined a bios video card, and I would not want to spoil the last one left.
After I show you what I did to change mod
https://www.youtube.com/watch?v=TMLkjy3ESG8&feature=gp-n-y&google_comment_id=z13yd1cxuubcivi4r04cdzyx1oudybxzrko0k
this is the guide that I followed,
4 minutes from the mod starts, changing values with polaris editor
remember my gpu sapphire rx 470 8 gb nitro + oc
I have 6 MSI RX 470s and 5 would hash at 20mh and 1 would hash at 4mh. I did not know what this was or how to fix it no matter what I did so, I returned the Gigabyte Motherboard and got a MSI motherboard. I am Still having the same issue. If I remove 1 470, then 4 would hash at 20mh and 1 would hash at 4mh. What am I missing?
Try switching the cards in slots. I ran 1 470 with 22, then added another with riser, that one did 4mh, but when i switched slot, it did fine @ 22mh. I read on some topic that for some people switching the cards did the job.
It seems people are wanting to reinvent the wheel on this thread. GDDR5 temps have a rating of 85-95 degrees from the manufacturer depending on the brand. A few things to consider:
1 - VRAM temps have been accepted in the 80-100 degree range for many years and there have been few to no significant failures
2 - Alot of GPU PCB's reach well above 100 degrees normally
3 - Tcase measurements are typically 15% below Core temps but most manufacturers use the Tcase temp
4 - (Probably the most important) - Tcase temps are determined by the timings of the RAM by an algorithm and therefore if they are modified the Tcase is also modified. The temps of Tcase reported are for the timings given and nothing else. One of the manufacturers has released their formula to calculate the acceptable Tcase from timings. (Cannot remember which it was)
So if ALL of the GPU manufacturers are wrong and a couple of people on here are correct then we are going to see a butt load of burned up RAM on GPU's because they frequently shipped with a higher Tcase then the manufacturer specifies OR maybe the Tcase is related to the timings
1 - VRAM temps have been accepted in the 80-100 degree range for many years and there have been few to no significant failures
2 - Alot of GPU PCB's reach well above 100 degrees normally
3 - Tcase measurements are typically 15% below Core temps but most manufacturers use the Tcase temp
4 - (Probably the most important) - Tcase temps are determined by the timings of the RAM by an algorithm and therefore if they are modified the Tcase is also modified. The temps of Tcase reported are for the timings given and nothing else. One of the manufacturers has released their formula to calculate the acceptable Tcase from timings. (Cannot remember which it was)
So if ALL of the GPU manufacturers are wrong and a couple of people on here are correct then we are going to see a butt load of burned up RAM on GPU's because they frequently shipped with a higher Tcase then the manufacturer specifies OR maybe the Tcase is related to the timings
I have 6 MSI RX 470s and 5 would hash at 20mh and 1 would hash at 4mh. I did not know what this was or how to fix it no matter what I did so, I returned the Gigabyte Motherboard and got a MSI motherboard. I am Still having the same issue. If I remove 1 470, then 4 would hash at 20mh and 1 would hash at 4mh. What am I missing?
Memory speed capability mostly determined not by gpu itself but the memory chips installed and its cooling. Asus afaik has no mem cooling so this combination - slow hynix plus bad design yields low stable mem speeds. I run 1950mem with 1375 strap on sapphire ref-like rx470 without mem errors in hwinfo64.
I was a bit skeptical, since I've worked with lots of servers before and the RAM would only get warm to the touch. However, I rely on data rather than my ego to determine what is correct, so I got out my IR thermometer and was surpised to find spots on the back of the card as hot as 98C. I bumped the fan to manual 60%, and that brought the hot spots down to the 80s. I then got out my infrared camera, and I could actually see the rectangular hot spots from the RAM on the other side of the board. The worst is above the GPU where the aluminum heatsink blocks any airflow over 3 of the DDR chips.
With a small rectangular piece of aluminum plate and a thermal pad I could probably make a thermal bridge from the RAM to the heatsink to cool them down...
See my post here: https://bitcointalksearch.org/topic/wich-is-better-rx-470-refference-or-custom-fan-1615394
Actually I remember seeing that when you posted it. But nobody actually gave any concrete info on the effect of DRAM cooling. Had I known that they can get over 95C without heatsinks, I would've paid more attention to that when buying a card. With the back of the board in the high 90's, the DRAM die likely was over 110C, or 25C over the maximum operating temperature for most Hynix RAM (85C).
https://www.skhynix.com/static/filedata/fileDownload.do?seq=267
Since power scales exponentially with voltage (close to V^2), if I can undervolt the memory a bit, I might be able to keep it cool enough to actually overclock it a bit more. I'm sure the Digi+ VRM can be controlled through I2C, but I don't want to dig up a data sheet or reverse engineer the register set in order to do it...
Or put some low-profile Enzo Tech Ramsinks on it and call it a day
Jump to: