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RX 480 overclock discussion - Page 9

post #81 of 433
What's the highest memory overclock anyone's gotten so far?
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post #82 of 433
Thread Starter 
I've seen benchmarks at 2300. I can get 2275 but Overwatch doesn't like it above 2200 for some reason.
post #83 of 433
So I wrote a small tool to manipulate the RX 480 reference voltage controller which might the interesting for some of you guys here - just please don't kill your cards with it!

http://www.overclock.net/t/1605757/vrmtool-a-simple-tool-to-read-and-write-to-i2c-vrm-controllers

post #84 of 433

Think I've got my reference Sapphire 8GB pushed as far as I can with stock BIOS limitations, but it's doing pretty good up to this point.  

 

I've got an interesting combination of items for cooling so so far...started with a Kraken and some 120 AIOs, but BOTH of my extras croaked shortly after hooking them up.  

 

So, I cut the radiator off of the TT 2.0 and am just using it as a waterblock.  Plumbed it into my mini GPU loop and temps are pretty awesome on the core.

 

That's an Enzotech MST-66 that I just plopped onto the back of the VRMs initially...the sink got surprisingly hot for having no pressure applied aside from gravity.

 

 

The mini loop:  XSPC EX240, (2) SilenX Effizio Thermistor Fans, XSPC X20 420 mini res/pump, with minimalist 1/4" ID tubing.  These fans are so quiet you can hear a cricket fart :D

 

Mini Loop (Click to show)

 

VRMs were fine for benching, but playing Doom they were :devil: after only a few minutes of gaming; Easily exceeding 100C with the fronts of the VRMs bare.

 

Out came the dremel/drill to make a heatsink :helmetsmi

 

VRM Sink Fabrication (Click to show)

XSPC Bay Res Face Plate

 

With Fujipoly Ultra Thermal Pads 

 

Some rubber grommets w/ nuts inside...also happen to be from XSPC Bay Res

 

Fits Nice :yessir:

 

Enzotech BCC9 Pure Copper RAM Sinks

 

Add in a Corsair SP120 for good measure :thumbsups and 7V resistor to keep the sound down 

 


Last I tested was with Doom last night at 1400/2250 1.15V core, stock VRAM volts, +50% power.  Here's the 90 minutes of average figures from GPU-Z 

 

 

 

And some data after ~30 min of Valley looping

 

 


 

Stock blower got me to 1350/2250 with stock voltage and 50% power.

 

Upgrading to water moved me up to 1400/2250 with 1.15V core and 50% Power

 

Adding the VRM heatsink squeezed the last 10MHz to 1410/2250 with 1.15V core/VRAM with 50% power.  The VRM cooling also added, what appears to be, rock solid stability at 1400/2250...just need to retest in Doom with that last 10MHz.

 

http://www.3dmark.com/spy/156950

 

4596 Time Spy (Click to show)

1410/2250

 

 

Patiently waiting for that XSPC Blade block to be available.  I feel since my homebrew VRM heatsink got an extra 10MHz, that the waterblock can probably eek out a little more before exceeding factory voltage/power limits with a BIOS flash...time will tell.

 

Super happy with the results so far :specool:

 


 

What doesn't make sense to me is how the reviews so far for the AIB cards are running less than, or equal to, what I've seen most people getting with the reference cooler.  Are the AIBs not allowing additional voltage past the reference 1.15V?  


Edited by Roboyto - 7/26/16 at 10:00pm
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post #85 of 433
Quote:
Originally Posted by deeper-blue View Post

So I wrote a small tool to manipulate the RX 480 reference voltage controller which might the interesting for some of you guys here - just please don't kill your cards with it!

http://www.overclock.net/t/1605757/vrmtool-a-simple-tool-to-read-and-write-to-i2c-vrm-controllers


has anyone tried this tool?
post #86 of 433
Does MSI Afterburner not work well with AMD cards? I've never seen anyone use it with 480s.
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post #87 of 433
Quote:
Originally Posted by svefn View Post

Does MSI Afterburner not work well with AMD cards? I've never seen anyone use it with 480s.

It's not ready yet lol. They need to get on the ball. At least Pascal can use their 4.3 beta meanwhile us RX480 users get the crap end of the stick.
post #88 of 433
Quote:
Originally Posted by svefn View Post

Does MSI Afterburner not work well with AMD cards? I've never seen anyone use it with 480s.

I'm the author of this tool. It is made specifically for the 480 cards - and it allows different stuff to be configured than afterburner. It's meant to change settings of the VRM. So not for the faint of heart.
post #89 of 433
Quote:
Originally Posted by deeper-blue View Post

I'm the author of this tool. It is made specifically for the 480 cards - and it allows different stuff to be configured than afterburner. It's meant to change settings of the VRM. So not for the faint of heart.

No fan profile or temp monitoring yet. Unless an update as done today?
post #90 of 433
Quote:
Originally Posted by iRUSH View Post

It's not ready yet lol. They need to get on the ball. At least Pascal can use their 4.3 beta meanwhile us RX480 users get the crap end of the stick.

I would suspect it to be available when the msi 480's are available.
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