RX470 4GB Custom rom

[almond]

which is the difference between use a modded bios or use wattman in order to optimize the gpu ?

wattman is a pain and resets itself after every crash.

[1714894171]

1714894171

[fr4nkthetank]

which is the difference between use a modded bios or use wattman in order to optimize the gpu ?

wattman is a pain and resets itself after every crash.

Wattman is a pain in the ass for sure.  thanks obama.  anyways modded 470 bios is nice, on linux, but someone correct if im wrong you cant do it yet on win7 or 10.

[reb0rn21]

Some ppl say patched driver is making problem with more the 3 cards on system, it should be more investigated
Also patched DLL must be used just for the driver from which it was build

Also same card use different memory so that also must be checked before flashing bios from the net, even if the card is same model

[xgtele]

Wolf0, could you upload somewhere your custom rom for Sapphire rx 470 4gb reference please?

[Truthchanter]

Wolf0, could you upload somewhere your custom rom for Sapphire rx 470 4gb reference please?

reference sapphire 470 4gb modded rom with the 1500memory strap timing set to 1625, 1750, and 2000:  http://www.megafileupload.com/k2gu/470_4gb_sapphire_modded_bios.rom

I use -12.5% (1065)/850mv core and 2000/850mv mem for high mhs and power efficiency

[fr4nkthetank]

which is the difference between use a modded bios or use wattman in order to optimize the gpu ?

wattman is a pain and resets itself after every crash.

Wattman is a pain in the ass for sure.  thanks obama.  anyways modded 470 bios is nice, on linux, but someone correct if im wrong you cant do it yet on win7 or 10.

You can, there's a patched driver, but you have to disable sig enforcement.

thanks yeah, modded all my cards, basically just changed the timings.  using trixx (fuuuuuu wattman), just make sure it dont restart

[xgtele]

Wolf0, could you upload somewhere your custom rom for Sapphire rx 470 4gb reference please?

reference sapphire 470 4gb modded rom with the 1500memory strap timing set to 1625, 1750, and 2000:  http://www.megafileupload.com/k2gu/470_4gb_sapphire_modded_bios.rom

I use -12.5% (1065)/850mv core and 2000/850mv mem for high mhs and power efficiency

Size (256K) of your vBIOS is not standard (512K). It can brick GPU if flashed

[Truthchanter]

Wolf0, could you upload somewhere your custom rom for Sapphire rx 470 4gb reference please?

reference sapphire 470 4gb modded rom with the 1500memory strap timing set to 1625, 1750, and 2000:  http://www.megafileupload.com/k2gu/470_4gb_sapphire_modded_bios.rom

I use -12.5% (1065)/850mv core and 2000/850mv mem for high mhs and power efficiency

Size (256K) of your vBIOS is not standard (512K). It can brick GPU if flashed

I noticed that message too. Seems 256k is the right size.. check out the size of other 470 (or even 480) roms available to compare the size

[Subw]

Wolf0, could you upload somewhere your custom rom for Sapphire rx 470 4gb reference please?

reference sapphire 470 4gb modded rom with the 1500memory strap timing set to 1625, 1750, and 2000:  http://www.megafileupload.com/k2gu/470_4gb_sapphire_modded_bios.rom

I use -12.5% (1065)/850mv core and 2000/850mv mem for high mhs and power efficiency

can i flash it to Sapphire Nitro 470 8Gb ?

[xgtele]

Wolf0, could you upload somewhere your custom rom for Sapphire rx 470 4gb reference please?

reference sapphire 470 4gb modded rom with the 1500memory strap timing set to 1625, 1750, and 2000:  http://www.megafileupload.com/k2gu/470_4gb_sapphire_modded_bios.rom

I use -12.5% (1065)/850mv core and 2000/850mv mem for high mhs and power efficiency

can i flash it to Sapphire Nitro 470 8Gb ?

No. You need to extract your rom with atiflash, edit it with Polaris bios editor and flash it back with atiflash

[Ambros]

Wolf0, could you upload somewhere your custom rom for Sapphire rx 470 4gb reference please?

reference sapphire 470 4gb modded rom with the 1500memory strap timing set to 1625, 1750, and 2000:  http://www.megafileupload.com/k2gu/470_4gb_sapphire_modded_bios.rom

I use -12.5% (1065)/850mv core and 2000/850mv mem for high mhs and power efficiency

Thank you for sharing !
What about the hash rate you are archiving with this ROM?

[Grim]

Wolf0, could you upload somewhere your custom rom for Sapphire rx 470 4gb reference please?

reference sapphire 470 4gb modded rom with the 1500memory strap timing set to 1625, 1750, and 2000:  http://www.megafileupload.com/k2gu/470_4gb_sapphire_modded_bios.rom

I use -12.5% (1065)/850mv core and 2000/850mv mem for high mhs and power efficiency

Thank you for sharing !
What about the hash rate you are archiving with this ROM?

Also how is the power distribution with the reference 470?

Reference 470 has 4+1 phases

Reference 480 has 6+1 phases

For the 480 4 phases are supplied by the 6 pin and 2+1 phases are supplied by slot.

This COULD mean that the 470s all 4 phases get supplied by the 6 pin and only the +1 (= for vram) is supplied by the slot.

The pci-e slot power draw from the ref. 470s would in this case be way lower compared to the ref. 480.

[Jacknife]

Wolf0, could you upload somewhere your custom rom for Sapphire rx 470 4gb reference please?

reference sapphire 470 4gb modded rom with the 1500memory strap timing set to 1625, 1750, and 2000:  http://www.megafileupload.com/k2gu/470_4gb_sapphire_modded_bios.rom

I use -12.5% (1065)/850mv core and 2000/850mv mem for high mhs and power efficiency

Thank you for sharing !
What about the hash rate you are archiving with this ROM?

Also how is the power distribution with the reference 470?

Reference 470 has 4+1 phases

Reference 480 has 6+1 phases

For the 480 4 phases are supplied by the 6 pin and 2+1 phases are supplied by slot.

This COULD mean that the 470s all 4 phases get supplied by the 6 pin and only the +1 (= for vram) is supplied by the slot.

The pci-e slot power draw from the ref. 470s would in this case be way lower compared to the ref. 480.

If that is the case, then it is quite safe to use the USB risers. If not, it is still safer than the RX 480.

[goen]

does anyone ever tried this multiplier?
http://www.ebay.com/itm/PCI-e-Express-1X-to-3-Port-1X-Switch-Multiplier-HUB-Riser-Card-USB-Cable-/262501285031?hash=item3d1e4bbca7:g:zTwAAOSwa-dWhMvm

tks,

[d57heinz]

does anyone ever tried this multiplier?
http://www.ebay.com/itm/PCI-e-Express-1X-to-3-Port-1X-Switch-Multiplier-HUB-Riser-Card-USB-Cable-/262501285031?hash=item3d1e4bbca7:g:zTwAAOSwa-dWhMvm

tks,

yes i have and i couldnt get it to work.  it recognized the multiplier but i couldnt get it to recognize a vid card in the slot.  even if its the only card on the pc.  I think there is good reason more dont use these.  There is a limit to the pcie lanes on a cpu and once you exceed that it will not post.  I dont know why the splitter didnt work with only one card other than it has a proprietary chip onboard and maybe that doesnt like vid cards. ethernet adapter or modem etc mifght be ok, idk

Best Regards
d57heinz

[rednoW]

256k is fine. 512k is also fine. Also, just to help you guys out, the "memory voltage" in the VBIOS can be set for Polaris (even using the editor) but it does nothing.

AFAIK this "memory voltage" is memory controller voltage and changing it via WattTool is definitely have influence on stability - when I set it less then 0.95v my card don't want to work with high memory freq.
I change the gpu voltage with voltage offset option, not directly in table so I think it is not the dependency between gpu voltage and mem controller voltage that matters...

[rednoW]

256k is fine. 512k is also fine. Also, just to help you guys out, the "memory voltage" in the VBIOS can be set for Polaris (even using the editor) but it does nothing.

AFAIK this "memory voltage" is memory controller voltage and changing it via WattTool is definitely have influence on stability - when I set it less then 0.95v my card don't want to work with high memory freq.
I change the gpu voltage with voltage offset option, not directly in table so I think it is not the dependency between gpu voltage and mem controller voltage that matters...

The editor changes MVDDC, which does nothing.  You describe VDDCI/AUX - which feeds the memory controller,  among other things.

[Eliovp]

256k is fine. 512k is also fine. Also, just to help you guys out, the "memory voltage" in the VBIOS can be set for Polaris (even using the editor) but it does nothing.

AFAIK this "memory voltage" is memory controller voltage and changing it via WattTool is definitely have influence on stability - when I set it less then 0.95v my card don't want to work with high memory freq.
I change the gpu voltage with voltage offset option, not directly in table so I think it is not the dependency between gpu voltage and mem controller voltage that matters...

The editor changes MVDDC, which does nothing.  You describe VDDCI/AUX - which feeds the memory controller,  among other things.

will post pic later

I don't doubt WattMan can change VDDCI - I was saying the Polaris BIOS Editor cannot.

Haleluja!

Something i've been shouting for weeks Finally someone who is on the same line!

[rednoW]

I don't doubt WattMan can change VDDCI - I was saying the Polaris BIOS Editor cannot.

Sorry, just updated the post above ... see pics.

[rednoW]

Is that VDDCI/AUX in the editor? No. That is MVDD(C) - and does nothing.

So why if I lower it in WattTool below 0.95 with 2200 memclock I have instability? And no problems with 0.95 or higher