Hello guys,
In heavy algorithm I use 1300 mhz core and depending on memory type (Samsung, Micron...) some cards work on 2000 mhz and some others on 2150 - 2200.
What do you suggest for voltages on both core and memory?
Right now I use core 975 mv and mem 1000 mv. Is it good or I can lower it a little more to save energy?
Cards are RX 580 8gb.
Thanks in advance!
Istr, what is your hashrate per rx580 card?
I do 1160mhz coreclock + 2220mhz on my microns, 880mV vcore and vmem., I get 1010 mh/s, using polaris 1 click timings
I do 1160mhz coreclock + 2100mhz on one of my hynix, 900 mV vcore and vmem, with a custom timing strap, and get 1005mh/s,
I do 1160mhz coreclock + 2190mhz on my other hynix, 900 mV vcore and vmem, with polaris 1 click timings, and get 950mh/s
I think, you cannot set vcore to be less than vmem, so your cores are effectively running at 1000mV.
I must say though, my hynix that does 1005 is not very stable, it does crash every once in a while, and it is the one with hashing errors, although no memory errors are reported. Some of my microns report mem errors but they never procuded bad hashes. That hynix one was bad from the beginning, but the custom ram timings saved a lot of performance and reduced the errors to acceptable levels.
I can't flash the other hynix as it's index is too high and I have to shutdown mining and disable some gpu's to reach it with ATI flash.
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Hi hesido,
thank you for your replay!
As I said in an earlier post I get from 1070 to 1148 h/s.
I have 2 rigs.
The first one with 6 RX. 2 480's and 4 580's 8gb all. (All 8gb in one rig for testing reasons).
2 Pulse's with Micron running 1300 mhz core and 2150 and 2200 mhz mem. I get on them 1070 and 1094 h/s stable.
1 XFX RX 480 8gb Samsung running 1220 mhz and 2000 mhz mem. I get on this 1106 h/s stable.
1 PowerColor RX 580 Micron running 1300 mhz core and 2170 mhz mem. I get on this 1080 h/s stable.
1 RX 480 Nitro+ Samsung running 1280 core and 2000 mem giving me 1134 h/s also stable.
and 1 Pulse RX 580 Samsung running 1300 core and 2000 mem giving me 1148 h/s also very stable for days and days.
Second rig and last, pitty!
4 Sapphire RX 570 4gb Nitro+ Hynix mem type running 1280 core and 2000 mem giving me 755 to 765 h/s also stable all the time.
and 2 Sapphire RX 580 4gb Nitro+ Elpida mem type running 1280 core and 1900 mem giving me 776 to 780 h/s stable all the time.
This second rig with the 4gb memory NEVER had the hashrate drop problem.
They reach maximum speed from the beginning.
I wish I had more!!! :-)))
To be honest I'm waiting for one Sapphire RX 580 8gb Special Edition. We'll see how it'll go.
All these on heavy algo.
Greetings from Hellas!
