So I tried nerdralphs tool and seemed to work ok. Something I am confused about is how can I change the voltage offset in the rom. For example I am testing with my xfx triple x 8gb card. I took the 1750 and 2000 straps and put them in his tool and copied the new value in polaris. Now when i start up the miner and open watttool I can set the voltage offset in windows watttool to -18 and shave about 40 watts. I am unsure how to set this in the bios because I cant find an equal tool for linux to set the voltage offset. I came across a few threads talking about I2C but I dont fully understand where that is and how I can change it to stick in the bios.
Bios editing, the actual editing in a hex editor, is best done by the people who have been doing it for a while, and thus know a lot about it. People like Eliovp or Wolf0 etc. Now a bunch of them got together on this thread to discuss and share how/what they do and the shared with us (most of) the secrets to tighter memory timing, and we are very thankful to them for it. What they haven't shared is details for adding an offset in the BIOS in a foolproof way, they did share the broad steps for doing it and people who have some understanding of BIOS editing managed it. People like you or I on the other-hand would need to either need to buy the offset modded roms from one of the people who are good at doing them, spend the time and energy needed to understand Hex modding enough to do it ourselves, or just be happy with watttool based offsets. I chose the third option. |
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Allright, after a long process of prototyping and working with different materials, I finally have my own compact 7 card cases ready  Cold Rolled Carbon Steel 0.8mm with a 0.6mm thick sheet, all powder coated and heat treated, and I love them in Black. Configuration as pictured above : MSI Gaming 5 Z97 motherboards Intel G3250 CPU DDR 3 4GB Ram 64GB SSD Corsair RM1000X PSu and 7 X HIS RX470 4GB cards Now ill admit, HIS aren't the best cards out there, but the Blue LED's on them go well with the Red's on my MSI motherboards. Also unlike Sapphire which has all kinds of different memory complicating things, all HIS cards are Hynix only. |
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I did the same with rx 480 with 8 gpu then i drop to 7 then to 6 for heat problems now with 6 with powerfull fan it working around 55° with 20° ambient (they get 82 watt from gpuz). i building not standard case to use 8 gpu then everything will work like i wanna, cause now i have experience with heat problems  If you dont' need standard case for rack and you can build case better use more bigger for 7 gpu will be ok with 4 fan (12cm) instead 3 Hmm will try building a larger case and see if 4 fans help Yes, ive been told delta or alyese fans will do the trick but they work out pretty expensive at about 12$ per fan The cards are kind of close together. They probably run pretty hot?
They do unfortunately, hence the problem. The Reference blower style cards are great in the case though, all other designs suck balls in a case If you put the case vertically, will that be cooler?
Because hot air rises? I could try that see if it helps. As things stand, my ambient temps are hovering around 32C and the cards throttle if I close the case, so this isnt working for me unless I keep the lids off. The whole point was to have enclosed cases and leaving lids off kinda defeats that purpose. |
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So I know I have a ways to go, but I spent last night going through this thread and a few articles on other pages off of this thread. I know this thread was created to help people understand so that is what I am trying to do, i am not hear to ask others to create my values. Few questions to start off. So understanding some of the posts it seems tightening the timings is more memory specific than card specific. So I can create a value from a rx 480 sapphire with hynix and it could work on a gigabyte rx480 with hynix?
Yes, for instance a 4GB memory strap for hynix will work across brands like Sapphire, HIS, MSI as long as the card has the same 4GB hynix chips for memory. When looking at timings for 4gb vs 8gb, changes can be made in different places. For example on my xfx rx 480 8gb with samsung I see only samsung timings but in my sapphire rx480 nitro+ 4gb, I see places I can change for either samsung, or elpida/hynix.
Most 570 cards come with multiple timing sets even though they have only one kind of memory. In such cases, only mod the timing set that is relevent to the kind of momory the card is using (identifying what the memory is by looking at the stock strap comes with xexperience) I am using srbpolaris / polaris and even with my 570 I see changes on 4gb cards being made at the 2: section for elpida/hynix vs 1: for samsung. I know that is just strap copying, but gotta start at basics. In srbpolaris (I know most of you guru's use linux, and it is not my forte, but will work on learning) I am able to analyze a strap and I am seeing alot of sections I can change. After reading some more through the thread, I see that it is not always a specific set of values for every card you can change, seems I need to learn the cheat sheet for what each value does. It seems FAW is one that can always be set to 0 but I dont see 32AW (at leasnt not in srbpolaris). TRP can be changed it seems pretty consistently throughout all cards? Also I am unsure how to decode the MISC. I could be using the wrong tool, and if so I just need to spend more time on what else I can use. Any guidance you all can provide would be really helpful and appreciated.
Use nerdraplhs tool linked earlier in this thread, he posted it as a simple weblink that you can easily access. |
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Allright, after a long process of prototyping and working with different materials, I finally have my own compact 7 card cases ready Cold Rolled Carbon Steel 0.8mm with a 0.6mm thick sheet, all powder coated and heat treated, and I love them in Black. DM me if anyone's interested in buying these babies. |
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Allright, after a long process of prototyping and working with different materials, I finally have my own compact 7 card cases ready Cold Rolled Carbon Steel 0.8mm with a 0.6mm thick sheet, all powder coated and heat treated, and I love them in Black. DM me if anyone's interested in buying these babies. |
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Allright, after a long process of prototyping and working with different materials, I finally have my own compact 7 card cases ready Cold Rolled Carbon Steel 0.8mm with a 0.6mm thick sheet, all powder coated and heat treated, and I love them in Black. Configuration as pictured above : MSI Gaming 5 Z97 motherboards Intel G3250 CPU DDR 3 4GB Ram 64GB SSD Corsair RM1000X PSu and 7 X HIS RX470 4GB cards Now ill admit, HIS aren't the best cards out there, but the Blue LED's on them go well with the Red's on my MSI motherboards. Also unlike Sapphire which has all kinds of different memory complicating things, all HIS cards are Hynix only. There's only two things holding me back from selling these en-masse: 1) I need high CFM fans to push heat out effectively, the coolermasters I have in there now barely move any air 2) Stocks of RX 570 OR TB85 motherboards are crazy hard to find  Any help/alternative suggestions in either department would be greatly appreciated. |
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been really really bz ... finally some pizza boxes arrived !
Whoa ... how??? I cant even find used Gaming 5's anywhere. |
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How many rigs in EthMan do you have?
Currently I'm rewriting some parts of EthMan, network routines too, probably it will help.
Eagerly await this update  |
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"Should Work" unfortunately isnt how this works at all. All motherboards with 6 PCIe slots "Should Work" but they dont. I would recommend only buying what other people have confirmed already to be working with 6 cards. |
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Asus Z270-p also works with 6 cards with the latest bios. I've read posts that It can go to 10 cards with extension boards under Linux but haven't tried that personally, but that does make this my go to board for all future builds.
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As you could guess by the title, things went wrong. I have purchased 24 of these GPU at the same time and erroneously thought that they were all the same. I modded the Bios of my first GPU by copying the memory straps. Then flashed the first rig followed by the next. I have confirmed 72h stability and decided to flash the last two rigs. The last two rigs are now crashing in seconds at any clocks while mining but I'm still able to boot and flash Bios. Googled this problem and found that with the serial number I could tell the memory type for some of my GPU. Anyone can give me a hand to locate or copy the other roms? Reference Sapphire RX 470 - Elpida – Got it from my first GPU backup
- Hynix – Looking for it
- Samsung – Looking for it
- Micron – Looking for it
I can give you Samsung and Hynix later today. Will upload them and post a link here. |
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I can edit bios in hex and undervolt it if someone is interested.
what is it difference instead use polaris editor? You can not undervolt in Polaris Bios Editor. why not? i see steps with voltages Changing those has no effect. |
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I can edit bios in hex and undervolt it if someone is interested.
what is it difference instead use polaris editor? You can not undervolt in Polaris Bios Editor. |
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I got a weird values in the voltage table:
Mhz | mV
300 | 800
608 | 65282
930 | 65283
and so forth. What supposed to mean the voltage values after 800?
You are using the wrong version of polaris bios editor for your bios, so that straps are not decoded correctly Those are GPU core voltages not memory straps. There is no version of Polaris which will allow you to under-volt properly. You need to go the hex editing way. Deadsix, could you link an article about hex editing voltages? The only thing I can find about hex editing Polaris is the memstraps. Thanks man There are no articles on the topic that I could find, just threads on various forums where masters of the craft discuss it among themselves and you get some hints. Google is your friend. |
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I got a weird values in the voltage table:
Mhz | mV
300 | 800
608 | 65282
930 | 65283
and so forth. What supposed to mean the voltage values after 800?
You are using the wrong version of polaris bios editor for your bios, so that straps are not decoded correctly Those are GPU core voltages not memory straps. There is no version of Polaris which will allow you to under-volt properly. You need to go the hex editing way. |
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my friend can rach 30mhs with super low power arround 40watt (GPU z)
use 2100mhz mem clock, but my gpu fail to reach it, anyone know why my gpu fail and his gpu cxan reach 2100 ? (same hynix)
2100mhz is impossible at 40W. Not hard or difficult, impossible. The lowest you can get on GPUZ for 2100 would be 80W. Now, every card is different, if you get lucky you get a good piece of silicon that can touch 2100mhz. If you are unlucky, it may not cross 1900. Mem clock has little (not nothing, but little) to do with overall wattage. You're looking at core - which is responsible for most of your draw. Interesting. Some tests are in order then I suppose to see if we can get to a GPUZ reading of 40W, at any clocks. Will report back soon. |
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my friend can rach 30mhs with super low power arround 40watt (GPU z)
use 2100mhz mem clock, but my gpu fail to reach it, anyone know why my gpu fail and his gpu cxan reach 2100 ? (same hynix)
2100mhz is impossible at 40W. Not hard or difficult, impossible. The lowest you can get on GPUZ for 2100 would be 80W. Now, every card is different, if you get lucky you get a good piece of silicon that can touch 2100mhz. If you are unlucky, it may not cross 1900. |
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I am trying to get the best out of my RX 480's I have one rig with currently rx 480's. Monday I get 6x 580 so untill AMD fixes their drivers stuff the 480's rig will get one or 2 580's too so flashing bios is not an option due to driver check. I need the latest drivers for 580 support. The next best option seems to be watt tool but the profiles I can find are extremely limited. I actually just found one ( https://us.v-cdn.net/5021640/uploads/editor/py/ls9nfopb6mrg.jpg). But when I used this one my hash rate dropped from a stable 23.5 mh/s / 470 mh /s (I am dual mining) to 18mh/s / 260 mh's. Is anyone able to help me get the most of my RX 480's? In case it is relevant, I do have samsun memorey. You need to look at your bios to understand how it works. There is one set of ram timings from 1750 - 1900, another from 1900 - 2000 and another post 2000. By using the watttool profile you posted above, you are pushing your card into the territory of the memory timings for 2000+ mhz and those are the worst timings on a card. In the profile you have, check speeds at memory speed 1749, and then at 1899. These are the two peaks that you can hit. Stay on whichever gives you maximum hash. |
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