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The SKUs for the 2 "new" Modells are: 11268-15 4GB 11268-16 2GB  |
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No, i meant that you 1st adjust and tweak the voltages the gpus need. A Bios change is the last step of a few - and not really needed. It depends on: your miner (if there are options to adjust voltages/clocks), your OS (W10/Linux) As Example on W10 you can use AMD Wattman (Part of the driver) to set profiles for every GPU and adjust there the clocks and voltages and you are set and no need to mod the Bios ... Hello,
Thanks for your reply.
I have hynix memories.
You mean i must edit my rom and edit my voltage and clock?!
Thanks
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Hello friends, I have RX 580 Nitro+ Special Edition, with 179.69 MH/s but almost 1.500w. I have mod all bios How to save more power?! https://imgur.com/a/YKP8KAny tips friends? Regards Drop Voltages and Clocks to save some juice :-) 875 1150 875 2050-2250 (depends on the Chips ya have ... and the mod ya have done ...) Should get the 580 down to +- 85W GPU-Z |
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Yes, hynix mjr didn't like TFAW/TFAW32=0 so as TRRD=5.
Thanks for help.
Another one question: (1) does changing some parameters needs to change others? (2) Is any parameters depends from other? (3) What parameters are linked between each other?
(1) Based on what so far is known about the Polaris mctrl: In some cases: Yes (2) There are for sure relations "inside" the strap and also with Timings that are not in the strap (as the strap does not contain all timings). A Datasheet from an AMD DEV would be more than handy (3) trfc/trc and so on .. there are a few, but it`s also to see in combination with the diff, vendors of the gddr rams. As there are (again) slight differences. A value that works on samsung, does not on hynix and maybe helps a bit on Elpida and so on .... Basically it`s the same as on the DDR Rams, just abit more complicated - as the memcontrollers evolved a lot ... much tweaking is without the datasheets just trial and error. How trfc and trc linked between each other? I didn't find any dependens with them... trfc usually is 186,192,206,219. trc is 65,70,73,75. Basically: (got a bit rosty on these ) tRFC is the time allowed to refresh a whole memory bank (Time between a ref and the next act command) tRC is the time allowed for a complete cycle (act, pre etc) tFAW should be the window for 4 act, 32 etc .... Reading some JEDEC docs sheds some light on these |
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Yes, hynix mjr didn't like TFAW/TFAW32=0 so as TRRD=5.
Thanks for help.
Another one question: (1) does changing some parameters needs to change others? (2) Is any parameters depends from other? (3) What parameters are linked between each other?
(1) Based on what so far is known about the Polaris mctrl: In some cases: Yes (2) There are for sure relations "inside" the strap and also with Timings that are not in the strap (as the strap does not contain all timings). A Datasheet from an AMD DEV would be more than handy (3) trfc/trc and so on .. there are a few, but it`s also to see in combination with the diff, vendors of the gddr rams. As there are (again) slight differences. A value that works on samsung, does not on hynix and maybe helps a bit on Elpida and so on .... Basically it`s the same as on the DDR Rams, just abit more complicated - as the memcontrollers evolved a lot ... much tweaking is without the datasheets just trial and error. |
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Does this mean that in any bios it's enought to take original bios straps and copy MC_SEQ_MISC1/3/8 from 1500 strap to 1750-2250 and then applying nerdralph's strapmods (ACTRD=16, FAW=0, T32AW=0, TRRD=5) will give the same cryptonight speed as modded bios?
I don't think that it will work on Hynix MJR memory. They straps maked by ill mind...
[...]
More or less yes, but FAW/T32AW zeroing is not always the best ... as "Speed" is not the only thing we need - we also need stability  That's right. I'm planning to expose ACTRD, ACTWR, FAW, T32AW, TRRD, and MC_SEQ_MISC1/3/8 so that you guys could play with them. For CryptoNight, you also need to tweak ACTWR. I'm getting around 900 h/s with CryptoNight and RX 480 without overclocking. Let's see if I can get this stable... Sounds very promissing ! Remembers me a bit on the "good old times" when we overclocked DDR/DDR2 Rams on Socket 939 or on the 1st batch of Intel Core2Duos ... If ya need a helping/testing hand - just lemme know |
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Does this mean that in any bios it's enought to take original bios straps and copy MC_SEQ_MISC1/3/8 from 1500 strap to 1750-2250 and then applying nerdralph's strapmods (ACTRD=16, FAW=0, T32AW=0, TRRD=5) will give the same cryptonight speed as modded bios?
I don't think that it will work on Hynix MJR memory. They straps maked by ill mind...
[...]
More or less yes, but FAW/T32AW zeroing is not always the best ... as "Speed" is not the only thing we need - we also need stability |
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