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Just out of curiosity.
Why would they give a discount as they're pretty sure they will sell out again in 1..2..3..
Makes no sense..
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Eliovp last post april 5 im starting to worry, anybody knows this guy contact details?
Haha, thank you for your concern. I'm still alive and kicking. I just haven't had the time to read through all of the posts/threads. When i do, i will  Greetings! |
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29 and change is pretty good.
nice work.
Forgot to mention, core clock 1140  |
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Okay, some more info As already known, they're 470's 4G. They ship them with already modified roms (Which are horrible, really, i have no idea what they were thinking but wtf..?) So they copied the 1500 strap all the way up to 2000 and clocked it at 2050, which is ok, no problem there, everyone does this. What bothers me is that they tried to set memory voltage, which makes no sense because it just doesn't work and thought it would be a good idea to skip DPM0 (300Mh 'core') and just overwrite it with (1135Mh)  , i honestly have no idea why... Anywho, obviously i changed all of that, wrote a custom strap, added voltage offset and guess what... Already got speed (ETH) up by 1MH and power down, obviously not finished with it yet (pretty sure i'll get them over 30). Here's a screeny, running their windows for testing purposes, only flashed 1 GPU to see the difference (GPU5)  Greetings! |
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I got a shirt last week!  I hope you received one that's at least 2 sizes bigger than you're use to i hope? |
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Evening. I have done some testing the past few days with a Nano and i want to share my findings. First picture is a picture of the power usage of the system without a gpu installed. So 43watt when running idle (i7 processor with 32GB Ram, Win10Pro 64bit) Next picture is a screenshot of the Nano running Ethereum. Stock clocks (1000/500) @ 26Mhz average. Power draw 102 watt give or take for the Nano running Ethereum @ 26Mhz Than we have a screenshot of the Nano running X11 (not the newest Nicehash optimized miner) Again Stock clocks @ 12Mhz average + not even playing with intensity, XI 1024 would have given me probably more. Power draw 105 watt for the Nano @ X11 Next one is Quark, again, not the newest Nicehash optimized miner. Stock clocks @ 16Mhz, a little disappointed here.. Power draw is almost identical to Ethereum power draw. So my conclusion. Best card i have ever had, Period! There's no Nvidia card that can beat these numbers (yet). Although, as mentioned before. It's an expensive card. But worth every penny and it looks better too!  Yeah, i'm an AMD Fanboy, i know :p If there are questions or if someone wants to see another test, just ask. Hello, I understand you're the resident r9 nano expert. I am new to nano and have it running in a rig at a consistent 78c degrees with the fan at 100% - my question is will this card survive or is there a max temp you'd recommend for 24 hour 7 days a week operation? Thank you in advance. haha, i completely forgot about this thread :p Funny to bring it up again, reading my posts i feel like a kid in a grown up world. Anyhow, Nano's are reference models, they're designed to be able to run at such temperatures. However, i wouldn't recommend it to have them running at or over 80 degrees for a long period of time. What you should do is start with pulling that voltage down by 100mV, they can easily handle it. That'll get your heat down significantly. Greetings and success! |
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So rumors seem to be true.. no more mxm gpu's.. Got some pictures that someone sent me. Looks A LOT like the first pandaminer design. Anyhow.. i don't know what to think.. that it's going to be heavy?  Bye Bye density, the one thing that B1 and pandaminer really had going for it IMO. This design is nice but I'm not so sure how it stacks up to long available rigs from Bitworks. I suspect maybe that this is another reason why they did not show real pictures of the new design among other possible reasons I previously mentioned. ...I wonder how many people that pre-ordered blindly thinking it would be only slightly larger than B1 are going to be upset? Clearly, its much, much larger. Pictures posted on website showed 3 Fans across, these pictures illustrate 5 fans across. here is a picture from their website of the B3 order page, mislead...much? Well, i never said it was the real deal I got the pictures from someone and he never said it was a Pandaminer, but at first glance, it sure looks like it Anyhow, even if it's not, there are definitely others out there, alternatives?... |
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sorry to say you pal but elpida is way better than samsung at the moment on rx 4xx series
130w from wall -100mv 1230 core 2100 mhz mem 30.6mhs
It depends Hynix 4G, core 1135, mem 2100, 30.5Mh, yes that's -100 on the core |
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So rumors seem to be true.. no more mxm gpu's.. Got some pictures that someone sent me. Looks A LOT like the first pandaminer design. Anyhow.. i don't know what to think.. that it's going to be heavy? Edit: Removed pictures as it's most probably not the "real deal" :p |
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bsod directly with your bios -100mv.
(dual mining ) eth+pasc
Blue screen :p, that's a driver issue.. After you flash this rom make sure you completely turn off your power (the voltage controller has to be reprogrammed). It's even best to first run DDU and reinstall drivers, this isn't necessary but in some cases it can help. + Dual mining with a -100mV undervolt .. |
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@eliovp: hello
With your 4 new bios the hasrate ethereum is optimized?
thx
Best thing you could do is try it. I can only guarantee a significant raise in hashrate for XMR. ETH speed will most likely be up a bit as well. Greetings |
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VDDC Offset + Basic Custom timing
------------------Here's a nice update for those who have Reference cards. In the package included, i've put 4 roms with VDDC offset. 1. -50mV 2. -69mV 3. -81mV 4. -100mV You can of course adjust these however you want, if you want to have an even tighter undervolt you can search the rom for this --> " 8D 00 F8 00" and replace the F8 part with EE(-112) for example. These roms also have a custom timing included. It's a basic one but it will give you a very high increase for XMR. Greetings and have fun! Link: Here"Also posted this in the op".
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It appears I can control memory voltage! Sweet!
Did you have to directly control it via i2c, or was it easier than that? Yes and no. Used the VBIOS. 00 8D ** 00 VDDC control 00 8E ** 00 MVDDC Control you can easily add it into the rom. |
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It's based on the 1625 strap, since the 1500 strap wasn't stable for me beyond 1875.
That's very strange, I have several rx with hynix and the 1500 strap is the most stable at least up to 2050. Maybe your cards have better cooling for the RAM? This is an Asus Strix. After tuning the 1625 strap, it was stable at ~27.2Mh with a 1950 mem clock. Now I'm testing 2000. If it's a Strix you might have memory voltage control, have you tried/checked this? I believe their custom VRM chip does control the memory voltage, but I haven't looked into it much. Since the RAM is not cooled (no thermal connection to the heatsink), I thought bumping the memory voltage would make things worse. The tuned 1625 strap is working quite well so far. It tested OK at 2000, and now I'm trying 2050. Once I've found the limit, I may look into the memory voltage to control power use, and see if it is stable with lower memory voltages. I have a Strix, pretty sure it doesn't work. EDIT: Wait... wait... there's something here.... Be careful! It may bite!! It appears I can control memory voltage! Sweet! Some can some can't |
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It's based on the 1625 strap, since the 1500 strap wasn't stable for me beyond 1875.
That's very strange, I have several rx with hynix and the 1500 strap is the most stable at least up to 2050. Maybe your cards have better cooling for the RAM? This is an Asus Strix. After tuning the 1625 strap, it was stable at ~27.2Mh with a 1950 mem clock. Now I'm testing 2000. If it's a Strix you might have memory voltage control, have you tried/checked this? |
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My Samsung strap was posted before, but here it is again:
777000000000000022CC1C00CE615C45C0571016B30CD50900400700140514207A8900A00300000 010103139962C3617
With 2100 mclk I'm getting 29-29.1 with sgminer-gm 5.5.5, kernel 4.10.5 & AMDGPU 16.60.
doesn't work on my power color red dragon rx480 8gm samsung mem. windows driver crash when start ETH, both 2050 and 2100 mem clock. works good on 2100 clock with 1750 (1625?) strap from original rom 777000000000000022339D00CECD593980551111AE8A84080048C6006C0014206A8900A00200312 0140F262B88252F15 My strap is for K4G4. Likely different mode registers than your 8G Samsung. thanks for the answer! Any hint for 8G samsung? My card has no mem cooling so I need some good timings for 2050-2100 range. There is some serious difference in Samsung Modlues, if you're lucky you can have one like i have. one that easily breaks 34Mh on ETH.. i'm still surprised myself to be honest.. GPU0 - 1220 / 2150 GPU1 - 1180 / 2100 GPU2 - 1220 / 2100 GPU3 - 1220 / 2100 GPU4 - 1220 / 2100 GPU5 - 1220 / 2100  yeah.. strange indeed |
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EDIT: @dallase I have my hynix 30.4 at 2080, it does 30.5 on 2100. GPU #0: Ellesmere, 4096 MB available, 36 compute units
ETH - Total Speed: 30.430 Mh/s, Total Shares: 1106, Rejected: 0, Time: 43:16
ETH: GPU0 30.430 Mh/s
Incorrect ETH shares: none Thats on windows though... And what core clock speed? I see about +0.7Mh increasing core by 100mhz Core 1145 So I assume you can break 31 @ core 1250 then? 1220/2150 = 31+ on linux This is a screenshot of 1165/2150 on an old kernel 4.10 with old drivers, same settings on 4.11 and latest amdgpupro drivers gets me 31+ with these clocks.  |
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Yea I got a batch of Samsung based reference saph 470s and manually added the offsets, but for some reason the gpu would not post with the offset added. Weird cause offsets on Hynix/micron cards worked fine. Never had time to investigate this.
What location were you adding the offsets at? Because I don't think they can be added at A992 for cards that dont already have a programmed offset built in. Maybe the learned folk on this thread could shed some light on how to go about adding an offset location to a bios that doesn't have one. Check out Overclock.net forum. There are some threads there that'll get you a long way to be able to add global offset. You basically have to find the voltage table (you can find this easily with atombiosreader) Open your rom in a hexeditor, find that table, (For a lot of Sapphire models, the VDDC offset is already there) 00 8D 00 ** 00 If you want to add it you'll need to modify the table by adding those values in that table. You then have to update the length of the VoltageObjectInfo (VOI) table & also update the length of the i2c table in VOI table <-- (something a lot of people tend to forget, i remember Wolf having issues with this as well until i told him that he had to change this value too (I2C table)). After that you have to remove the amount of bytes you added in the legacy ROM section (or the size of the rom is incorrect). That's not all, after doing that you have to modify the master table as well (there's a calculator for this, also on overclock.net). It's not "that" difficult but the risk of bricking your card is A LOT higher here than screwing around with timings. Greetings! |
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Are there any publicly available custom memory strap timings for the rx 400 series? (samsung, elpida, or hynix)
Here's the Samsung strap I'm currently working on: 777000000000000022CC1C0010625C49D0571016B50BD50900400700140514207A8900A00300000 0191131399D2C3617 It's the 1750 strap with RRD=5, FAW&32AW=0. It's stable at 2100 on my Sapphire Rx470. The previous custom strap I tried was based on the 1625 strap, and I would start getting a lot of errors over 2000. I just started working on it today, so there's more tweaking to do (like trying a lower tRC for RAS). Nicely done Lets see the final results. Small adjustments to your timing based on my experience : 777000000000000022CC1C00CE615C45C0571016B30CD50900400700140514207A8900A00300000 0151031399D2C3617 Thanks! Nice improvement over the regular 1750 strap. Now the question is... will this 1750 samsung strap work with 480s with samsung (and then both 4gb and 8gb?) If you have one of the first 4G samsung batches, it will work and even improve even more. (because you can unlock those to 8G) If you have a newer batch of those 4G samsung's, it will most probably run but won't run stable. Greetings |
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What is the most you can squeeze out of a r9 390 ?
A LOT  watercooled 390 can hash ~37/8 Definitely! You can crank those babies up (390 Nitro's) to as good as 40Mh. (Huge OC though..) |
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