Sapphire RX 550 2GB – 475 h/s

Electroneum
Scratchpad: 2MB

"gpu_thread_num" : 1,

"gpu_threads_conf" : [
 { "index" : 0, "intensity" : 432, "worksize" : 8, "affine_to_cpu" : true },

{ "index" : 0, "intensity" : 432, "worksize" : 8, "affine_to_cpu" : true },
 ],

Modified bios, memory clock set to 1875 Mhz at 850 mv, stable for 14 days, no crashes or problems.

The best drivers are the Blockchain drivers from Aug 23/2017.

Flashing Bios:

Use AtiFlash to save your original bios. Copy it, rename it to Rx550-Mod.rom and then use Polaris Bios Master Editor to open the bios file and only use one click timing patch. Save the bios and exit.

Now load the modified bios file (RX550-Mod) with AtiFlash and flash bios. May take a minute or two. After that use atikmdag-patcher-1.4.6

It will detect your gpu and now patch your driver signature.

Reebot the system and use OverdriveNTool and set your memory clock to 1875 Mhz and apply settings. Higher memory clocks lower the hashrate and stability of the system.

Using 3 x Sapphire RX 550 2Gb Lite and getting 1425 H/s

Enjoy:)

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Gamepak20
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Gamepak20

Using the click strap at 1500Mhz will give better results than the 1875.

Marko
Guest
Marko

What do you mean by click strap.

I overclocked my memory to 2000 Mhz in steps and i also tryed every configuration till 2000 and the best results are with the memory at 1875 Mhz.

My gpu core runs at 1071 Mhz and 768 mV.

Do you mean using a diferent method for flashing the bios of the gpu?

Marko
Guest
Marko

Edit: Flashed bios to open additional shader, now at 768.
Changed the intensity to 416, stride index to 2 and mem chunk to 8.
Memory set at 1950/850.
Hashrate a steady 505 h/s for 24 hours.
Great gpu for the price.

xdelios
Guest
xdelios

Can you explain how you unlocked the shaders?

xdelios
Guest
xdelios

Originally your card had 512 or 640 shades?

Marko
Guest
Marko

640. Unlocking is possible only on this Gpu.

xmr user
Guest
xmr user

hi,
I have old version of Sapphire rx 550 2gb -Lexa with Elpida GDDR5 memmory.
I`m getting stuck on 550 H/s
stable oc @ core clock 1395 , mem clock 1940 (will go mhz-by-mhz).

Do you have a link for step-by-step bios mod?

my amd file looks like:

gpu_threads_conf” : [
// gpu: gfx804 memory:1664
// compute units: 8
{ “index” : 0,
“intensity” : 960, “worksize” : 8,
“affine_to_cpu” : false, “strided_index” : 1, “mem_chunk” : 2,
“comp_mode” : true

Any help is much appreciated !!!

Marko
Guest
Marko

Did you already flashed the bios?
Your config file should have 2 threads, like this:

“gpu_threads_conf” : [
{ “index” : 0, “intensity” : 416, “worksize” : 8, “affine_to_cpu” : true },

{ “index” : 0, “intensity” : 416, “worksize” : 8, “affine_to_cpu” : true },
],

If you are using the new version of xmr stak, strided index should be 2 and mem_chunk should be 8.

You said you’re getting 550 h/s now?

xmr user
Guest
xmr user

yes, flashed bios
Im using new version of xmr stak
per gpu now I
m getting 575 h/s
while starting mining, new messages appeared:
Starting AMD GPU thread 0, no affinity.
Starting 2x thread, affinity: 0.

My config file is now:

“gpu_threads_conf” : [
// gpu: gfx804 memory:1664
// compute units: 8
{ “index” : 0,
“intensity” : 416, “worksize” : 8,
“intensity” : 416, “worksize” : 8,
“affine_to_cpu” : true, “strided_index” : 1, “mem_chunk” : 2,
“comp_mode” : true

Many thanks!

Marko
Guest
Marko

Did you use one time click in bios editor or did you copy 1500 strap to other memory timings?

A screen shot of your bios and miner would be great. Can you send me your bios so i can examine it?

xmr user
Guest
xmr user

Saved with ati bios. on polaris bioseditor copy-paste 1375 value to 1750 and 2000 (I don’t have 1850, but 1500/1625 etc), patched with atikmdag. now

https://nofile.io/f/zeZqwsMkkVA/tunning+bios.rom

https://imgur.com/a/gjlEF

now I`m getting 740 h/s for gpu

should I copy values from 1500 strap instead 1375 ?

Marko
Guest
Marko

Checked your bios, you have the 1500 strap copied all the way to 2000, that’s how it should be.
One timing click makes the same as I used that and my straps are the same as yours.

If you are above 500 h/s that great. Don’t know how you hit 740, cant even believe it.
Can you share a screen shot of your miner?

xmr user
Guest
xmr user

Hips don’t lie

https://imgur.com/a/CeWpP

your help is priceless

Marko
Guest
Marko

That’s for etn or aeon?

despina
Guest
despina

It must be aeon, can not believe that’s for etn

sp00n
Guest
sp00n

// gpu: gfx804 memory:1395 // compute units: 8 { “index” : 2, “intensity” : 432, “worksize” : 8, “affine_to_cpu” : false, “strided_index” : 2, “mem_chunk” : 9, “comp_mode” : true }, { “index” : 2, “intensity” : 432, “worksize” : 8, “affine_to_cpu” : false, “strided_index” : 2, “mem_chunk” : 9, “comp_mode” : true }, ], getting about 475+ with lexa, mem_chunk is a weird one the odd number 9 gives slightly better not sure why most people seem to use 2 default – core 1206 default – memory 1750 memory 1848 core 1206 any higher i get hw errors, not… Read more »

Marko
Guest
Marko

Did you flash your bios?

Change intensity to 416, it makes a slight difference. My mem_chunk is set at 8.

You should set your memory at 1875 and try to get to 1950.
Leave the core alone.

sp00n
Guest
sp00n

so 2 rx550’s – sapphire pulse 2gb DP OC , lexa, default pre-flash, 1206, 1750 – gigabyte 2gb d5, lexa, default pre-flash, 1183, 1750 – fresh copy of xmr stak – Polaris 1 click timings (nothing else), save – flashed – restart – pixel patch – restart again – adjust memory clock to 1875 for both, drop sapphire core from 1206 to 1183 mv core 1050 mv memory 875 – restart – xmr stak config “gpu_threads_conf” : [ // gpu: gfx804 memory:1395 // compute units: 8 { “index” : 1, “intensity” : 416, “worksize” : 8, “affine_to_cpu” : false, “strided_index”… Read more »

Marko
Guest
Marko

Hei.

What is the hashrate of each card?

Marko
Guest
Marko

Hei.
Anybody using the new Adrenaline 18.3.4 drivers with compute workload?
Are they stable and is it possible to overclock the gpu normally?

Any info would be great (the previous drivers were not stable and oc was compromised).

Thanks.

sp00n
Guest
sp00n

—————————————————– HASHRATE REPORT – AMD | ID | 10s | 60s | 15m | ID | 10s | 60s | 15m | | 0 | 235.9 | 238.2 | 238.8 | 1 | 240.3 | 239.9 | 239.3 | | 2 | 240.8 | 237.8 | 237.4 | 3 | 235.1 | 237.6 | 237.3 | Totals (AMD): 952.1 953.5 952.7 H/s —————————————————————– Totals (ALL): 952.1 953.5 952.7 H/s Highest: 965.1 H/s —————————————————————– [2018-04-12 16:41:54] : Result accepted by the pool. RESULT REPORT Difficulty : 12816 Good results : 1570 / 1570 (100.0 %) Avg result time : 14.9 sec… Read more »

Marko
Guest
Marko

Try intensity 432, decreasing it decreases the hashrate.
What drivers are you using?

Use Blockchain drivers, 23rd Aug 2017 or the new Adrenaline version, 18.3.4 with the workload compute settings on.

What are you using for overclocking?

You should use OverdriveNTool.

You should be able to get to 1900 with ease, then its only a matter of stability.
I have 2 cards on 1950 and the 3rd on 1875, because its not stable enough over 1900.

xmr user
Guest
xmr user

on rx 550 2gb?!?
how do you get +950 h/s ?
how many cards?
many thansk!

sp00n
Guest
sp00n

alot of cussing got the 2 cards to 950 haha

marko is your card the same as xmr user? he posted a screen shot above ^^ mines exactly the same…

sp00n
Guest
sp00n

are you getting loads of errors at 1900 ? with hwinfo

Marko
Guest
Marko

No errors from hwinfo.
You?

Marko
Guest
Marko

No. I have the new one, Polaris 21 with elpida memory but 768 shaders.

Marko
Guest
Marko

2 cards, getting 1000 h/s on etn. For aeon I’m getting 2000 h/s.

Mariusz Zoolek
Member

Marko, when I switch to compute workload on 18.3.4 driver, no hashrate difference. I think the rig is more stable with graphics workload.

Marko
Guest
Marko

Did that in the morning, same hashrate as with the blockchain version but my stability is the same. Using compute worload.
Had to manually copy dll to windows for OverdriveNTool to work.

Will keep mining for a day and see what happens. Hope no errors, otherwise i will switch back to blockchain.

Mariusz Zoolek
Member

Blockchain it’s not bad, but there is one problem. The driver doesn’t hold voltages on some card, for me RX 550 4GB. That means, when I reduce the voltage for example to 0,850mV on GPU core, the cards are still working at 1,1000mV. With 2GB no problem.

I see on xmrstak, some people have amazing hashrates, but must remember, better hashrate != not always good profitability.

On linux, amdgpupro 17.40, on 4GB I have ~500H/s with only after bios mod, no undervolting, 1750 memory clock, but power draw is too big..

Marko
Guest
Marko

The point is that i have free electricity. So would you suggest for me to switch to Linux and amdgpupro to have the highest possible hashrate?

Should i go with Ubuntu?

The 740 h/s mentioned here on only one gpu thread is not likely, that would be a over 100% increase over the original hashrate, the gpu cant handle this. Waiting for a reply if its for Aeon mining or Electroneum and Monero.

Mariusz Zoolek
Member

It depends on the approach. If you have free electricity, great 🙂

But the lifetime of the equipment is also important. Long load with higher voltages/frequencies may quickly brick your devices, this is a cost, if you know what I mean. I know few pro miners, and they undervolting gpus, even if they have lower hashrate, to prevent damage devices.

About linux. I’m not suggesting that you use linux, because many things on it is little harder (undervolting etc.). Your choice.

sp00n
Guest
sp00n

i will chime in 270x purchased it new in the same year it was released check the date. its spent its entire life -87% mv when mining 1495 memory core default. no errors no artifacts i use it for gaming how does it perform today? like it did then, every 6 months it has a clean new pads new thermal paste, grease the fans. anyone fancies trying to mod the bios, correctly i get 460 strangely using the same config as the rx550 even tho it has 20 compute units and alot more shaders.. I will try ubuntu i have… Read more »

xmr user
Guest
xmr user

I was minin Aeon, but getting a lot of BSD’s errors restarts etc

Marko
Guest
Marko

As sugessted, you should use 2 threads per gpu, much better.