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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 164

post #1631 of 3452
1267 ran good then top card down clocked to 1184 at 79 degrees after about 5 minutes.
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post #1632 of 3452
Jeztur2003_1067Mhz_2067Mhz_84C-88C-84C.zip 110k .zip file
post #1633 of 3452
Is that a joke 1067 lol I mean seriously if I have to run these at 1067 I may as well get rid of them. The voltage these msi cards are pulling is to demanding and causes way to much heat. I thought maybe we could figure something out with the 3 temps and the fan setting I don't even mind it running 100 percent to be able to do 4k gaming but if I have to downclock to 1067 then 4k becomes barely playable or not at all. With a single card on stock. 153 bios I can just use msi slide to 1360 +50 power and run it all day long with crossfire having to downclock to 1067 is just insane and not worth it.
Edited by jeztur2003 - 3/27/17 at 6:07pm
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post #1634 of 3452
Basically DeLimited means any given clock is able to use all the power it requires to pull the maximum amount of frames per second.

On Tomb Raider 2013, my 1433mhz bios would clock back to near 1000Mhz and still 35-60fps 4k ultimate 1 card on Tomb Raider 2013.

So the clock doesn't mean anything, it's about finding the clock at which is the limit of the VRM. Does that make sense?

So even DeLimited 1067Mhz could run better than a Limited 1360Mhz BIOS with 110C temperature limits. That's when the card melts, mind you.

So I would try out 1067Mhz first and then come back with details. The difference is not equal to the increase in clock. The difference is equal to the difference in temperature.

With DeLimited, we don't have to worry about Power Limits. The power limits are there because of the thermal design could not handle the card at full speed.

By going DeLimited, and clocking back to where that clock can tax out heavy load cool and fast is ideal.
post #1635 of 3452
Ok will give a shot tomorrow I appreciate all the help.
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post #1636 of 3452
Your welcome.

Keep in mind even if the card never left 1Ghz, that's 1,000Mhz. That's still 32 Billion Pixel's reliably every second, not to mention another 144 Billion Texel's reliably every second.

When at full tilt capacity of throughput for VRM temperature and 1Ghz, it could still hit over 200 watts at 4k.

If the game your playing has on screen 32 Billion pixel's and 144 Billion Texel's. One card at 1Ghz will do 32 frames per second at 4k for instance.

Add two cards and it turns that 32 Billion & 144 Billion, into 64 Billion & 288 Billion Every second. Giving the capacity for 64 frames per second if the pixel's on screen rendered amount to 64 Billion.

It's when the game throws out far more Pixel's Per Scene than the card is capable of every second that causes lag. Sometimes simple things like Level Of Detail can reduce the scene to the desired amount of Pixel's.
post #1637 of 3452
Thanks for that rundown man smile.gif Ok so here's the results of your 1067 and they were good, very good I had every fan in my rig cranked doing all these tests just so you know.
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post #1638 of 3452
the top card never hit over 65 and the bottom 55 and as great as that is I did notice about almost 10 fps loss at 4k from say the 1367 bios that overheat the cards. OK I'm really going to bed this time LOL if you cook something up in your voodoo bag of bios wonders I'll test them out in the morning if you think this is the pinnacle of my crossfire config then i'll leave it be. Thanks. Goodnight.
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post #1639 of 3452
@chris89

I cant agree with you, i cant confirm that what you wrote about temperatures of RX. I took your PCB picture and put some numbers to make it easier to explaind.



temperatures of numbers 2,3,4,5,6 are reltively cold 50-max 60 celsius degrees. Operating temeperature of this components is irrelevant in perspective of stability or overclocking capacity. You can put as big radiator as you can fit on this chips but you will gain nothing.

VRM - number 1 - overheating of this component is very characteristic. If VRM will reach measurable temperature of 115 C degrees (such tempreature will show up in HWinfo lets say) card will drop clocks to 300 for about a 1 sec. Then clocks will get back to max and such situation will repeat each time when temperature will reach 115. To be honest on stock clocks it is almost impossible to reach 115. I put a waterblock on my card, i can see 115 only when the card is being operated at 1480/2100 @ 1.312 V, i put small alu radiator on VRM and probably i will replace it for something bigger.

My experience is based on Sapphire Ref RX 480 8GB

If you plan to break the warrenty sticker and take off your reference cooler replace it for something more reasonable - Arctic Mono or sth like that. The temperature of VRM on stock cards isn't an issue, the problem is the temperature on core.
Edited by Na1l - 3/27/17 at 8:21pm
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post #1640 of 3452
@jeztur2003 : Try this pack and see which clock works the best. From 1067Mhz to 1250Mhz is a full 8 Billion Pixel's (ie Extra 8fps) & 23.352 Billion Texel's (ie Bridge the gap of 1367Mhz or higher) than 1067Mhz.

Your core hit 65C, VRM 68C at 1067Mhz. So if you add 17.15% for 1,250Mhz that brings the core to 76C and VRM to 79.662 or 80C. Pretty much as fast as it'll go.

Jeztur2003_MSIRX480GamingX8GB1088-1250.zip 883k .zip file

*Side Note*

Really? I was hitting 15,819 points Firestrike at 1416Mhz near stock voltage only 3 extra millivolts on core VRM 1.233v.

I noticed before adding the 2.75mm thickness Thermagon T-6100 Flex thermal material on those various components. The clock did not dip as it would ordinarily with those chips un-cooled.

With a pad on those chips on reference blower, allows direct contact. Which before when the core was 75C, VRM 75C on core. It would dip the clock, since other components hit my Max Temp/ Hotspot.

After adding the Pads, it did not dip at all and held solid 1,416Mhz core @ 1.233v.

If I could create small squares perfectly the size of each VRM of Thermeez, Allunimum Oxide Infused Ceramic Putty. I could safely add to each specific VRM to avoid short. The size of this Thermeez "Square" would need to be 3/4 to 1/2 the size of the VRM it is cooling. Since with compression, it will spread the extra 1/4 to 1/2 covering and cooling the entire surface of each VRM.

So basically I will probably stick with finding ideal max for stock reference 480 cooling, while adding the specific pads for those various components.

That way I know that what I find will be comparable to other "Stock" cards. Rather than throwing out BIOS that worked fine on a thermal modded GPU. Which does not work on "Stock" cards.

As far as the Core and VRM go, the Core would not overheat at all on reference blower. Once the fan started cranking out 3667 to 4000rpm. The core would fall from 77C to 67C while under full tilt load.

So it's the fault of the primarily Core VRM and various other components for temperature deviations.

For a water block cooled card. One large sheet of 2mm thick Fujipoly 17w/m K material over the entire contact surface of the water block. Even without thermal paste on the core. The Fujipoly 17w/m K is more than capable of cooling the hottest of GPU Core's. At that point, numbers no 480 had seen will be possible. Likely out of everyone's budget I'm sure.
Edited by chris89 - 3/27/17 at 8:39pm
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