Overclock.net › Forums › Graphics Cards › AMD/ATI › Polaris Bios Editing ( RX5xx / RX4xx )
New Posts  All Forums:Forum Nav:

Polaris Bios Editing ( RX5xx / RX4xx ) - Page 153

post #1521 of 3357
Yeah @ziXs

If you want power delimited, send me your bios .rom and I can show you how to DeLimit, the stock bios. By dumping via GPUz, add as .zip here and it will work. thumb.gif

Basically it comes down the what is the rpm sweet spot of your gpu? At what max rpm can you deal with? My bios has 2200rpm as max. Though I think it can spin up past 8,500rpm, according to HWInfo. Which is loud. So actually 1407Mhz is possible, and it makes a good noticeable difference at 4k.

So far 3333rpm is too low since core is 80C, VRM 82C. Its too loud at 4444rpm, so it's somewhere between 3667 and 3999rpm or so. Basically since core is 80C, and VRM is 82C : my max temperatures are at 88C. So it is allowed to go up to 88C.

Basically if I reduce all Max Temperatures to desired value, call it 75C across the board. It can do just fine at 3667rpm. Since the max RPM and Max Temperatures tell us what clock will it hold the longest. With max at 88C, it is allowed to hit 1407mhz fairly often. However if set max to 75C, it will hover between 1200mhz and 1333mhz and on occasion hit 1407mhz.

It would be awesome to wire up a 0.5mm thick 250w Peltier to the core & vrm. Run the wires to a ambient temperature sensor 12 volt voltage controller. Which can attenuate the voltage according to ambient and maintain ambient of the core/ vrm. I guess the down side is the consumption of an extra 250 watts which isn't ideal. Which clearly points to a better heatsink. So conductive that the "VRM Plate" transfers all the way to the back of the card. Or just strip the paint of the factory cooler(s), merge them via weld or solder and have them "Copper Plated". If you feel the VRM under load it's hot, and feel the back metal of the long plate and it's cold. Meaning very poor conductivity that doesn't spread effectively saturating the whole "VRM/ Memory Plate".


Edited by chris89 - 3/23/17 at 1:33am
post #1522 of 3357
hey chris how did you get the core voltage to 0.838V in the last pic?
post #1523 of 3357
@pok123 That's idle voltage. Try this BIOS, TDP reduced to 88 Watts Limit/Max & 66 Ampere TDC Current. Stock clocks with a fan tune... try it out so I know it's working.

POK123_RX470_4GB_Tuned_Cooler.zip 110k .zip file
post #1524 of 3357
Further testing shows that the PowerTune Max Temperatures also control power. So ideally TDP/TDC Limit/Max could be 999.
So then when you set your temperatures it will control the power according to temperature rather than limiting performance.

It is clear that the RX 480 can beat a 1,250Mhz 390X DeLimited, when DeLimited. On stock voltage as well. Just keep going up until it can't go higher... Booting at 1500mhz is up in the air. However something like 1433Mhz may beat the 14,888 score I recieved on my power hog 390X @ 1250mhz. Possibly 1469Mhz as well... Thats 47 Billion Pixel's & 211.536 Billion Texel's every second. With proper limits this could be do-able on reference cooler.

When set at 1407mhz, and all temp limits at 75C. The GPU and VRM hit 68C/66C but scores were lower since it was limiting the clock and "throttling" basically.

So maybe PowerTune temps at 84C Shutdown at 88C and then 84C would be better. I just don't like seeing the VRM at 87C, because it will go that high if set to 88C.

Then comes the fan details. Basically the Percent of fan is not so much the actual percentage, it's the percentage of "Max RPM" you set... Determine your fans "Max" rpm by first setting 9999rpm, sensitivity 3333. Low/Med/High/Max temp Percent to 33-54-67-100... Temps to say 33C-54C-67C-84C... Determine with HWInfo what RPM is the max... mine was like 8,500rpm or higher.

So yeah it's more in depth, but just will take trial and error to dial it in so it stays cool and performs well under gaming at 1,407Mhz core clock.

Here's a comparison on setting Temp Limits & 999 TDP/TDC LIMIT/MAX

From 12,656 to 14,009 as far as Test 1 goes from 61.03fps to 66.98fps is 9.75% all from Temperature Limits. From 75C to 84C is 12%. So yeah this says something. I think I wouldn't want to see above 80C on core or VRM at up to 1500Mhz. So that means we will see throttling but it's okay because it can go up to 1500mhz yet throttle by temperature of components. Not to burn anything out.


Edited by chris89 - 3/23/17 at 5:36pm
post #1525 of 3357
Hey guys,

Been hunting around the net for the past couple of days but can't seem to find an answer.

I have a Sapphire RX470 Nitro(non +) 4Gb OC and I'm rather confused, in GPU-Z it says the VRAM is Elpida but if I open Polaris Editor It says I have both? See screenshots.




I've been unsuccessful in flashing any Elpida bios's so should I try Hynix? The timing straps has 1:xxxx and 2:xxxx as per the screenshot, I'm needing to copy 1500 through to 2000, do I do this for both 1:xxxx and 2:xxxx?

Hope that makes sense, any help would be appreciated thumb.gif
Gaia
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770k AsRock Extreme 4  Powercolor 7970 8GB G.Skill Sniper 1600 
Hard DriveHard DriveOptical DriveOS
OCZ Vertex 4 Seagate 1tb  Sony DVD/CD Windows 7 Ulitmate 
MonitorKeyboardPowerCase
ViewSonic 27' Full HD LED Thermaltake Challenger  Coolermaster Silent Pro 800W Corsair 650D 
Mouse
Razer Death Adder 
  hide details  
Reply
Gaia
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770k AsRock Extreme 4  Powercolor 7970 8GB G.Skill Sniper 1600 
Hard DriveHard DriveOptical DriveOS
OCZ Vertex 4 Seagate 1tb  Sony DVD/CD Windows 7 Ulitmate 
MonitorKeyboardPowerCase
ViewSonic 27' Full HD LED Thermaltake Challenger  Coolermaster Silent Pro 800W Corsair 650D 
Mouse
Razer Death Adder 
  hide details  
Reply
post #1526 of 3357
@Beat Bios saying hynix and elpida means it supports both memory is all. You can't quite go past 1900mhz without significant memory errors. I'd go with 1797mhz for stability. By using low speed timings on higher speeds means simply more errors/ less stability. Maybe more benchmark points but not hours of gaming stability.
post #1527 of 3357
Thanks @chris89

I'm actually doing this more for Crypto coin mining and most guys are getting 2000+Mhz on the VRAM, so I'm trying to do the same I was just highly confused about the dual memory thing.

As per my initial question, "the timing straps has 1:xxxx and 2:xxxx as per the screenshot, I'm needing to copy 1500 through to 2000, do I do this for both 1:xxxx and 2:xxxx?"

The videos and tutorials I've seen only has 1:xxxx in PBE but mine has 1:xxxx and 2:xxxx so not sure what that means?
Gaia
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770k AsRock Extreme 4  Powercolor 7970 8GB G.Skill Sniper 1600 
Hard DriveHard DriveOptical DriveOS
OCZ Vertex 4 Seagate 1tb  Sony DVD/CD Windows 7 Ulitmate 
MonitorKeyboardPowerCase
ViewSonic 27' Full HD LED Thermaltake Challenger  Coolermaster Silent Pro 800W Corsair 650D 
Mouse
Razer Death Adder 
  hide details  
Reply
Gaia
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 3770k AsRock Extreme 4  Powercolor 7970 8GB G.Skill Sniper 1600 
Hard DriveHard DriveOptical DriveOS
OCZ Vertex 4 Seagate 1tb  Sony DVD/CD Windows 7 Ulitmate 
MonitorKeyboardPowerCase
ViewSonic 27' Full HD LED Thermaltake Challenger  Coolermaster Silent Pro 800W Corsair 650D 
Mouse
Razer Death Adder 
  hide details  
Reply
post #1528 of 3357
thanks chris, i just took it for a spin here is the info



I do notice the temps stayed lower while the fan spinned harder... but the gpu core voltage is same as before? i don't really know how to interpret some of these numbers.. is everything working as it should? thanks!

Quote:
Originally Posted by chris89 View Post

@pok123 That's idle voltage. Try this BIOS, TDP reduced to 88 Watts Limit/Max & 66 Ampere TDC Current. Stock clocks with a fan tune... try it out so I know it's working.

POK123_RX470_4GB_Tuned_Cooler.zip 110k .zip file
post #1529 of 3357
@Beat If your mining you want total stability, the kind you can walk away from and not worry. Send your bios .rom GPUz dump and .zip it for here. I'll line it up. We can test to see what works best. thumb.gif

@pok123 By the way post full HWInfo v546 with VRM temps as well. Yeah they look good but is the fan too loud? Here this one is ever so quieter and cooler with max core clock 1333Mhz thumb.gif

POK123_RX470_4GB_1333mhz_Even_Cool_Quieter.zip 110k .zip file

No power limits, with temperature controlled power draw. All targets at 64C max, shutdown 88C. Less max fan rpm. Possibly way faster/ quieter/ cooler.

POK123_RX470_4GB_1333mhz_Power_DeLimited_64C_Targets_Quieter.zip 111k .zip file

Further tuning, left me with 1433Mhz core at 1233mv & stock 2000Mhz memory : 75C'ish Med-Max Temp 83-84C - PowerTune Temps 84-88-84 (Shutdown 88C)


Edited by chris89 - 3/23/17 at 11:23pm
post #1530 of 3357
@chris89 - thanks i'll give that a shot tmw

here is the complete GPU reading..



Quote:
Originally Posted by chris89 View Post

@Beat If your mining you want total stability, the kind you can walk away from and not worry. Send your bios .rom GPUz dump and .zip it for here. I'll line it up. We can test to see what works best. thumb.gif

@pok123 By the way post full HWInfo v546 with VRM temps as well. Yeah they look good but is the fan too loud? Here this one is ever so quieter and cooler with max core clock 1333Mhz thumb.gif

POK123_RX470_4GB_1333mhz_Even_Cool_Quieter.zip 110k .zip file
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › Polaris Bios Editing ( RX5xx / RX4xx )