[UPDATE] RX480 (Ref) 31+Mh, Custom Rom - VDDC OFFSET + Custom timing

[arvita112]

I have this card : MSI Radeon RX 470 Gaming X 8GB (RX470GAMINGX8G)
Which can i use mod bios?

[1713875187]

1713875187

[1713875187]

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[chudm]

guys need some advice, im making a 2nd rig, and im new to this bios modding stuff, so im looking for a card with dual bios, according to what i had read here the 470 nitro and 480 nitro are both good options right?

I can find the 470 4 gb nitro for 217$ and the 480 4 gb nitro for 229$ which should i choose?

[Walrusbonzo]

Eliovp, I'm guessing this is where your secret comes in somehow....

Using your 31 otb low power BIOS as it is, 1191/2200mhz, I get 30.6 mh/s.

When I tune it with MSI AB I set it to 1191/2000mhz and still get 30.6mh/s. Great.

So I mod your BIOS to default to 1191/2000mhz, suddenly I lose 2mh/s

I sure didn't expect that to happen.

[rednoW]

Eliovp, I'm guessing this is where your secret comes in somehow....

Using your 31 otb low power BIOS as it is, 1191/2200mhz, I get 30.6 mh/s.

When I tune it with MSI AB I set it to 1191/2000mhz and still get 30.6mh/s. Great.

So I mod your BIOS to default to 1191/2000mhz, suddenly I lose 2mh/s

I sure didn't expect that to happen.

This is a known bug in amd new drivers. I you sure that when you change mem from 2200 to 2000 in MSI AB the actual memory speed becomes 2000?
Better use WattTool and restart miner after any frequency change.

[Walrusbonzo]

Eliovp, I'm guessing this is where your secret comes in somehow....

Using your 31 otb low power BIOS as it is, 1191/2200mhz, I get 30.6 mh/s.

When I tune it with MSI AB I set it to 1191/2000mhz and still get 30.6mh/s. Great.

So I mod your BIOS to default to 1191/2000mhz, suddenly I lose 2mh/s

I sure didn't expect that to happen.

This is a known bug in amd new drivers. I you sure that when you change mem from 2200 to 2000 in MSI AB the actual memory speed becomes 2000?
Better use WattTool and restart miner after any frequency change.

I can't be sure it has changed, I only know that both MSI AB and GPUz are both saying 2000MHz.

Thanks for the info

EDIT: Bingo, this is exactly the issue. Is it a driver bug that also means core clock is locked at 1191? It won't budge either way it seems.

[AzzAz]

Eliovp, I'm guessing this is where your secret comes in somehow....

Using your 31 otb low power BIOS as it is, 1191/2200mhz, I get 30.6 mh/s.

When I tune it with MSI AB I set it to 1191/2000mhz and still get 30.6mh/s. Great.

So I mod your BIOS to default to 1191/2000mhz, suddenly I lose 2mh/s

I sure didn't expect that to happen.

This is a known bug in amd new drivers. I you sure that when you change mem from 2200 to 2000 in MSI AB the actual memory speed becomes 2000?
Better use WattTool and restart miner after any frequency change.

I can't be sure it has changed, I only know that both MSI AB and GPUz are both saying 2000MHz.

Thanks for the info

EDIT: Bingo, this is exactly the issue. Is it a driver bug that also means core clock is locked at 1191? It won't budge either way it seems.

When you mod bios it tells you to restart. Then comp starts with moded bios, even if you change card ( s ) . No matter what MSI AB or whatever says. Than after second restart it starts with bios of new card (s)...
And whatever you do : let it work for half hour - than test...

[crazyearner]

With the modded bio on each one what is the watts poweer draw at wall and what is each card using would like to get some more details as to the gpu using wattage used on each bios. Is the wattage use less than a 390x GPU?

As am considering to do

right now get 30 to 32MH on 390x GPU with 168 to 170 in and 140w use.




Whats the power uses on the 480x with the modded bios would like some details to compare with to see if worth grabbing or just sticking to the 390s

With the image on your last one for RX480-32MhOTB and the picture showing gpu sensors showing: GPU onlu Power Draw is 120W its actual power use on full load? If so this is a nice amount to have considering am pushing close to 170w to 180w watt on 390. How long you had running at 30 to 32MH ?

[Walrusbonzo]

Eliovp, I'm guessing this is where your secret comes in somehow....

Using your 31 otb low power BIOS as it is, 1191/2200mhz, I get 30.6 mh/s.

When I tune it with MSI AB I set it to 1191/2000mhz and still get 30.6mh/s. Great.

So I mod your BIOS to default to 1191/2000mhz, suddenly I lose 2mh/s

I sure didn't expect that to happen.

This is a known bug in amd new drivers. I you sure that when you change mem from 2200 to 2000 in MSI AB the actual memory speed becomes 2000?
Better use WattTool and restart miner after any frequency change.

I can't be sure it has changed, I only know that both MSI AB and GPUz are both saying 2000MHz.

Thanks for the info

EDIT: Bingo, this is exactly the issue. Is it a driver bug that also means core clock is locked at 1191? It won't budge either way it seems.

When you mod bios it tells you to restart. Then comp starts with moded bios, even if you change card ( s ) . No matter what MSI AB or whatever says. Than after second restart it starts with bios of new card (s)...
And whatever you do : let it work for half hour - than test...

This wasn't the issue. I only had to restart claymore miner for the new clocks to kick in. It wasn't that I hadn't restarted the PC. I've done hundreds of BIOS flashes before  

Also just created my own BIOS based off the stock one that came with the card. Now I can change core clock speeds and I get Eliovp speeds, and my extra 4GB Winning.

With the modded bio on each one what is the watts poweer draw at wall and what is each card using would like to get some more details as to the gpu using wattage used on each bios. Is the wattage use less than a 390x GPU?

As am considering to do

right now get 30 to 32MH on 390x GPU with 168 to 170 in and 140w use.




Whats the power uses on the 480x with the modded bios would like some details to compare with to see if worth grabbing or just sticking to the 390s

With the image on your last one for RX480-32MhOTB and the picture showing gpu sensors showing: GPU onlu Power Draw is 120W its actual power use on full load? If so this is a nice amount to have considering am pushing close to 170w to 180w watt on 390. How long you had running at 30 to 32MH ?

I'm running multiple 290x and a single RX480. I'm getting 7%~ more hash for half the power usage with the RX480 over the 290x (1000/1250mhz with -100~150mv on vcore).

As a temporary measure, set your GPU vcore to -100mv in MSI AB or similar and drop memory clock to 1250. You should see no drop in performance but a big drop in VDDC power draw. Some of my 290x will do 1GHz core at almost 1v VDDC! But the worst ones still need about 1.06v.

From what others have told me and what I've seen and read elsewhere, 850~900w total power draw from the wall is common for a 6 x RX480, 180mh/s setup.

[ps_jb]

From what others have told me and what I've seen and read elsewhere, 850~900w total power draw from the wall is common for a 6 x RX480, 180mh/s setup.

These numbers are too good to be true

[Cryptozillah]

From what others have told me and what I've seen and read elsewhere, 850~900w total power draw from the wall is common for a 6 x RX480, 180mh/s setup.

These numbers are too good to be true

My early 6x480 build (original bios):
https://bitcointalk.org/index.php?topic=1577332.msg15849551#msg15849551
Got the powerdraw down to 950w after that.

[ps_jb]

My early 6x480 build (original bios):
https://bitcointalk.org/index.php?topic=1577332.msg15849551#msg15849551
Got the powerdraw down to 950w after that.
[/quote]

Exactly: 164MHs with power consumption of 990W from the wall - these numbers are believable

Not 180MHs with 850-900W

[Cryptozillah]

My early 6x480 build (original bios):
https://bitcointalk.org/index.php?topic=1577332.msg15849551#msg15849551
Got the powerdraw down to 950w after that.

Exactly: 164MHs with power consumption of 990W from the wall - these numbers are believable

Not 180MHs with 850-900W
[/quote]
Not sure, you get more speed at lower power on a custom rom with some tweaking.

[ps_jb]

Not sure, you get more speed at lower power on a custom rom with some tweaking.

No, you will not get 180MHs at 850-900W from the wall

[Walrusbonzo]

Not sure, you get more speed at lower power on a custom rom with some tweaking.

No, you will not get 180MHs at 850-900W from the wall

This was for single mining Eth only. Not dual mining. And I'm certain it would be possible with a titanium efficient PSU.

Edit: I'm still waiting on a wall socket power meter to get a better grasp of entire system draw. But based on my current setup for 1 RX480 I still think it would be possible. 78.6w for the GPU. I don't know exactly how much extra the rest of the card is drawing. But assuming it's about 40w(Why would it be more? Even 40w is probably way over the real value. RAM and VRM use no way near the power the GPU does). Then 6 x 120~ is 720w. Add a mobo, CPU(low clocked dual core Celeron) some RAM, a few fans and an efficient Titanium PSU rated over 1000w(You get more efficiency at 40~60% PSU load, so for 800~900w a 1600w EVGA Titanium would be best). I can definitely see power draw from the wall at around 900w, and less. But maybe not so common as I originally stated

[ps_jb]

And I'm certain it would be possible with a titanium efficient PSU.

No - it would not be

I can definitely see power draw from the wall at around 900w, and less.

You will not get 900W from wall hashing with 6 RX 480 with rate of 180MHs

[Walrusbonzo]

And I'm certain it would be possible with a titanium efficient PSU.

No - it would not be

I can definitely see power draw from the wall at around 900w, and less.

You will not get 900W from wall hashing with 6 RX 480 with rate of 180MHs

i'll prove you wrong in a few months when I have 5 more RX480 

[ps_jb]

i'll prove you wrong in a few months when I have 5 more RX480 

Respect and have a great weekend!

[citronick]

And I'm certain it would be possible with a titanium efficient PSU.

No - it would not be

I can definitely see power draw from the wall at around 900w, and less.

You will not get 900W from wall hashing with 6 RX 480 with rate of 180MHs

i'll prove you wrong in a few months when I have 5 more RX480 

I have a rig = 6 X Sapphires 480s on 1300w EVGA-G2 drawing about 1150-1200watts total at stock roms.

I recently applied Heliox lowpower 29Mhs rom with Crimson 16.9.1, and it should be below 1000w (fingers crossed, since this was my intention by using the mod roms - objective to achieve sub-1000w)

I will take a reading from a kill-o-watt meter to be sure.

[ps_jb]

I have a rig = 6 X Sapphires 480s on 1300w EVGA-G2 drawing about 1150-1200watts total at stock roms.

That is exactly how it should be

I recently applied Heliox lowpower 29Mhs rom with Crimson 16.9.1, and it should be below 1000w (fingers crossed, since this was my intention by using the mod roms - objective to achieve sub-1000w)

I will take a reading from a kill-o-watt meter to be sure.

Good luck with stable hashing

[Walrusbonzo]

i'll prove you wrong in a few months when I have 5 more RX480 

Respect and have a great weekend!

Cheers, you too