Topic: Custom RAM Timings for GPU's with GDDR5 - DOWNLOAD LINKS - UPDATED - page 27. (Read 155645 times)

is possible change strap in Linux machine (ethOS), any tool for this, or I must do it in Windows only with PBE ?

thnx
BTC

Both WattTool and Afterburner voltage offsets seem to work fine on Gigabyte RX570 Gaming, what cards are you having difficulty with?

Only issue I've seen with WattTool is that it doesn't comprehend the new 500 series memory clock states, it sees one of the intermediate states instead of full load clocks.

I got 3 of those XFX 470 4GB how can I get them to do 29.5 to 32MH

Third option not working on RX5XX cards

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.

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.

hello

i am asking the pros 
is it safe to use https://anorak.tech/t/anoraks-vbios-collection-optimized-settings-for-performance-power-saving/13/3     
moded bios from Sapphire RX 480 Nitro+ 4GB Samsung   on a NON + card ?
thx

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.


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)


Use nerdraplhs tool linked earlier in this thread, he posted it as a simple weblink that you can easily access.

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?  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.  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. 

Sorry if my thoughts seem random, I was trying to remember all I had thought about last night while reading!

Well, depending on who you ask, I'm also a big asshole. :-)

I think so, as I know it's calculated from burst length, but I'd have to look up the exact formula again.

It depends.  The answers are in this thread if you take the time to read it.

No, it's right. TR2R is not mentioned because it's ALWAYS going to be 5 for GDDR5.

What strap has given you the best hash rate with the rx480?

i have millions of errors, and very rarely rejected share. So it looks like its not really a big problem

 In my experience,If error in the millions, yes. usally you can see share rate decline and eventuelly a crash a the end.

what could be a stable latency for H5GC4H24AJR that cna OC fine at 1900MHz?

Ok, do GPU Mem errors shown in HWinfo affect the number of found shares ?
I mean more errors mean less found solutions, or it has nothing to do with it?

I've been a little busy with work, but just wanted to say + thank you for setting up a CGI wrapper online, to make it accessible for all. This is amazing work. You're a real gift to the community, I hope you kjnow that, nerdralph!

Sorry I have been away for a while.  Will read through the poss and see if I need to update the OP.