Does the brand of memory on gpu matter?

Swinging Phallus

full member

Activity: 266

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Quote from: HodlerBaggins on January 31, 2018, 05:46:52 PM

Samsung is the best

Micron is the worst.

It definitely matters, but not a ton. 1 or 2 Mh/s if you bios mod them correctly for ETH.

Samsung cards are way better for Cryptonite, at least in my experience.

I had the luck of having 3 of my GPU's being Micron and surprisingly, they were all capable of being modded, in fact I had more trouble modding one of my samsung GPUs (which came OC by the manufacturer). The majority of Micron GPus that I have work just as intended. I only have a trouble with one of my Micron GPUs pulliing around 24-28 Mh/s , there's no work around for it - i've tried everything so I just have to deal with it. None the less I don't see Micron to be that bad.

RX 580 in case you are wondering.

theodrim

newbie

Activity: 78

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Quote from: Amstellodamois on January 31, 2018, 06:53:43 PM

Can you get rid of the ATI settings entirely and set the GPU to compute with a third party tool (I don't think OverdriveNTool does it)?

Yeah, just unpack driver that you want to use, install said driver via device manager (RMB on gpu > update driver > browse my computer > choose path where you unpacked drivers (\Packages\Drivers\Display\WT6A_INF) > install) or via pnputil /add-driver <\Packages\Drivers\Display\WT6A_INF\C0324065.inf> /install
Activate compute workload via registry ([HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0000] 0000 for first gpu, 0001 for second, etc. key name is "KMD_EnableInternalLargePage"=dword:00000002)
There was a tool written for same task on this forum, but simple batch script will suffice, if you don't want to do in manually. I mean even simple reg file will suffice (example for 6 gpu):

Code:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0000]
"KMD_EnableInternalLargePage"=dword:00000002

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0001]
"KMD_EnableInternalLargePage"=dword:00000002

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0002]
"KMD_EnableInternalLargePage"=dword:00000002

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0003]
"KMD_EnableInternalLargePage"=dword:00000002

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0004]
"KMD_EnableInternalLargePage"=dword:00000002

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0005]
"KMD_EnableInternalLargePage"=dword:00000002

Bigdrago

newbie

Activity: 312

Merit: 0

Quote from: HodlerBaggins on January 31, 2018, 05:46:52 PM

Samsung is the best

Micron is the worst.

It definitely matters, but not a ton. 1 or 2 Mh/s if you bios mod them correctly for ETH.

Samsung cards are way better for Cryptonite, at least in my experience.

I get 30.x with micron (sapphire nitro+ 8gb).
Hynix about 28-29.

Will buy some Samsung tomorrow.

androstan1234

jr. member

Activity: 251

Merit: 6

Quote from: Amstellodamois on January 31, 2018, 06:53:43 PM

Quote from: dohfish on January 31, 2018, 05:36:11 PM

For overclocking, do yourself a favor and use OverDriveNTool, create a .bat file and start the on boot, nothing will ever beat that for stability, it simply just works.

Can you get rid of the ATI settings entirely and set the GPU to compute with a third party tool (I don't think OverdriveNTool does it)?

There is a way to set compute mode without using AMD settings. I believe it's a regedit, and it was disclosed on this board. Do some searching.

Bigdrago

newbie

Activity: 312

Merit: 0

Quote from: HodlerBaggins on January 31, 2018, 05:46:52 PM

Samsung is the best

Micron is the worst.

It definitely matters, but not a ton. 1 or 2 Mh/s if you bios mod them correctly for ETH.

Samsung cards are way better for Cryptonite, at least in my experience.

Got a bunch of 570b gb micron. Lol. Will get them up and running soon. Hope they will do gopd.

dohfish

newbie

Activity: 65

Merit: 0

Quote from: Amstellodamois on January 31, 2018, 08:06:12 PM

Asking because I've felt sometimes (rarely) my settings were overridden by something (suspecting wattman, of course).

If you have a driver crash due to too high clocks, you will see the AMD Settings take over, so that could be a factor, I have not seen it interfere in any other cases.

Amstellodamois

newbie

Activity: 182

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Asking because I've felt sometimes (rarely) my settings were overridden by something (suspecting wattman, of course).

dohfish

newbie

Activity: 65

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Quote from: Amstellodamois on January 31, 2018, 06:53:43 PM

Quote from: dohfish on January 31, 2018, 05:36:11 PM

For overclocking, do yourself a favor and use OverDriveNTool, create a .bat file and start the on boot, nothing will ever beat that for stability, it simply just works.

Can you get rid of the ATI settings entirely and set the GPU to compute with a third party tool (I don't think OverdriveNTool does it)?

Honestly, I don't know - I always simply install the settings and apply compute via that, as long as you don't tinker with Wattman at all I have had no issues with it.

At least, I have not had any issues, I cannot even remember that I have had a driver crash/issue for ages, at least not since mid dec when I installed the Adrenaline driver package, it has been rock solid since then.

Amstellodamois

newbie

Activity: 182

Merit: 0

Quote from: dohfish on January 31, 2018, 05:36:11 PM

For overclocking, do yourself a favor and use OverDriveNTool, create a .bat file and start the on boot, nothing will ever beat that for stability, it simply just works.

Can you get rid of the ATI settings entirely and set the GPU to compute with a third party tool (I don't think OverdriveNTool does it)?

tipac

newbie

Activity: 55

Merit: 0

i flashed all my rx580 bios with anorak .rom.
will this decrease my gpus lifespan ?
thanks

HodlerBaggins

newbie

Activity: 42

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Samsung is the best

Micron is the worst.

It definitely matters, but not a ton. 1 or 2 Mh/s if you bios mod them correctly for ETH.

Samsung cards are way better for Cryptonite, at least in my experience.

dohfish

newbie

Activity: 65

Merit: 0

For overclocking, do yourself a favor and use OverDriveNTool, create a .bat file and start the on boot, nothing will ever beat that for stability, it simply just works.

I have had my fair share is issues with TriXX, Afterburner, Claymore, Wattman and what the f. ever is out there, ODNT simply works 100% of the time.

Bigdrago

newbie

Activity: 312

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Thanks.

Will try Trixx to underclock gpu, reduse volt and oc memory clock.

Vann

hero member

Activity: 1036

Merit: 606

Most overclocking tools won't work with the new AMD Adrenaline drivers. I use the Claymore miner config file to set the undervolt, overclocks, power limit and temp/fan speeds automatically at run time. You can also use OverdriveNtool to create overclocking profiles for your cards as explained on www.mining.help.

Setting the voltage and clocks in the Bios is possible, but IMO it's not worth it unless you are dealing with lots of cards since it makes it harder to change them on the fly for different algorithms. Mattthev's guide gives the basics on setting the voltages and clocks in the Bios.

https://bitcointalksearch.org/topic/guidetutorialxmrethhow-to-mod-bios-rx470570480580-vega-mining-1954245

Bigdrago

newbie

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What software would u recommend when undervolting a bios modded gpu? Cant I undervolt directly the bios?
I will use newest AMD drivers.

Vann

hero member

Activity: 1036

Merit: 606

Quote from: Bigdrago on January 31, 2018, 11:40:15 AM

Thanks.

I was thinking of using the bios from Anorak on the cards.
(Plan b is to memstrap the cards myself).

But the question I keep asking myself. How much hash to gain when OC? Is there a risk undervolting?

On cards that aren't Bios modded the default memory timings play a bigger role. Since you can't Bios mod Nvidia cards, I suspect that's why Nvidia 1060 cards with Hynix memory are not as good on Ethash as cards with Samsung or Micron memory. I have the opposite results with my Bios modded RX 580's. Using the PBE timings the cards with Hynix memory get ~31.5 MH/s stable, while my Samsung cards get 30 MH/s max.

On RX 570's you should see ~5 MH/s increase on Ethash from Bios modding the timings. Undervolting cards is generally safe as long as they are stable and it also makes them run cooler. Excessive heat and voltage is the number one thing that kills electronics and cooler running cards last longer.

Juggar

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Activity: 242

Merit: 11

Quote from: giveen1 on January 31, 2018, 11:43:55 AM

Quote from: Juggar on January 31, 2018, 11:32:09 AM

Quote from: Bigdrago on January 31, 2018, 11:27:07 AM

Hi. I have received some radeon 570 (4gb and 8gb).
Does it really matter what kind of memory they have? Samsung, elphida, hynix or micron?

If it matters I want to return the “bad” ones and keep the best.

It matters a great deal for Eth mining considering its a memory heavy algo that relies on a high memory OC.

I only have experience with Nvidia cards but having Samsung can make a huge difference. Samsung ( @ +1000) GTX 1060 3gb = 25 MH/s and Hynix only 20 MH/s or less.

My 1060's are Hynix and its not worth mining Eth with them.

Yup, ive been very lucky so far. every 1060 ive bought has been samsung. My best cards are HP OEM 1060 3GB cards, very unassuming but 25 MH/s monsters with a +1000 MHz OC.

giveen1

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Quote from: Juggar on January 31, 2018, 11:32:09 AM

Quote from: Bigdrago on January 31, 2018, 11:27:07 AM

Hi. I have received some radeon 570 (4gb and 8gb).
Does it really matter what kind of memory they have? Samsung, elphida, hynix or micron?

If it matters I want to return the “bad” ones and keep the best.

It matters a great deal for Eth mining considering its a memory heavy algo that relies on a high memory OC.

I only have experience with Nvidia cards but having Samsung can make a huge difference. Samsung ( @ +1000) GTX 1060 3gb = 25 MH/s and Hynix only 20 MH/s or less.

My 1060's are Hynix and its not worth mining Eth with them.

Bigdrago

newbie

Activity: 312

Merit: 0

Thanks.

I was thinking of using the bios from Anorak on the cards.
(Plan b is to memstrap the cards myself).

But the question I keep asking myself. How much hash to gain when OC? Is there a risk undervolting?

Juggar

member

Activity: 242

Merit: 11

Quote from: Bigdrago on January 31, 2018, 11:27:07 AM

Hi. I have received some radeon 570 (4gb and 8gb).
Does it really matter what kind of memory they have? Samsung, elphida, hynix or micron?

If it matters I want to return the “bad” ones and keep the best.

It matters a great deal for Eth mining considering its a memory heavy algo that relies on a high memory OC.

I only have experience with Nvidia cards but having Samsung can make a huge difference. Samsung ( @ +1000) GTX 1060 3gb = 25 MH/s and Hynix only 20 MH/s or less.

Topic: Does the brand of memory on gpu matter? (Read 301 times)