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post #2441 of 4152
Didn't it come with an MSI branded version of Afterburner? Did you try it for changing the fan curves?
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post #2442 of 4152
Anyone know what after-market 480's still use the reference PCB? or at least something close enough to be compatible with a standard full-cover block?
Looking for a cheap 480 to use as an aux and encoder GPU and would prefer the future option for water, however don't have access to full-reference cards...
   
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post #2443 of 4152
Quote:
Originally Posted by KarathKasun View Post

Max out the power limit in WattMan and drop voltage by 10mv or so. The clock jumping around is likely causing some issues.
I tried and tried. Nothing I do can keep it at stock 1288. It dips to 1000 mhz for no reason. Card is being returned and a Nitro+ 1342mhz 480 will be at my door Tuesday. This is the third and final 480. If this card isnt able to maintain its advertised clock-speed and output 144hz without flickering Im sending the Freesync monitor and card back and going back to Nvidia. Not sure what craziness is happening with either my two XFX cards or AMD drivers but enough is enough. I really hope this Nitro+ works well I just want to use my 144hz freesync monitor and RX 480 as advertised.
Edited by SmackHisFace - 11/27/16 at 10:40pm
post #2444 of 4152
Quote:
Originally Posted by SmackHisFace View Post

I tried and tried. Nothing I do can keep it at stock 1288. It dips to 1000 mhz for no reason. Card is being returned and a Nitro+ 1342mhz 480 will be at my door Tuesday. This is the third and final 480. If this card isnt able to maintain its advertised clock-speed and output 144hz without flickering Im sending the Freesync monitor and card back and going back to Nvidia. Not sure what craziness is happening with either my two XFX cards or AMD drivers but enough is enough. I really hope this Nitro+ works well I just want to use my 144hz freesync monitor and RX 480 as advertised.

Sounds like you are hitting some other hard limit if it is going that low. VRM temps, over current, voltage droop... something. I went with a reference board to avoid these kinds of problems. Just with Wattman I can eliminate clock changes.

Also remember, 1288 or 1342 are maximum BOOST clocks. The cards are not designed to maintain them with default settings. The base clock is something like 1050-1100. My RX 470 has a base clock of ~950 with a boost of 1216, and I can not hold much over 1300 without throttling unless I edit the BIOS. Try backing off the clocks and volts. Something like 1266/1.05v (check your stock voltages too, 1.15v+ is too high for default power limits), just to see what happens. You could also use something like HWInfo to keep an eye on more sensors to see what exactly is going out of acceptable range.

NV, OTOH, markets cards by giving the minimum boost clocks. Meaning that you get more performance variance across the range of products. It makes you feel special when your card always overboosts, but perhaps that is just better 'marketing'.
Edited by KarathKasun - 11/28/16 at 12:58am
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post #2445 of 4152
Quote:
Originally Posted by SmackHisFace View Post

I tried and tried. Nothing I do can keep it at stock 1288. It dips to 1000 mhz for no reason. Card is being returned and a Nitro+ 1342mhz 480 will be at my door Tuesday. This is the third and final 480. If this card isnt able to maintain its advertised clock-speed and output 144hz without flickering Im sending the Freesync monitor and card back and going back to Nvidia. Not sure what craziness is happening with either my two XFX cards or AMD drivers but enough is enough. I really hope this Nitro+ works well I just want to use my 144hz freesync monitor and RX 480 as advertised.

Do you have a certified and fully tested DP cable?

Clocks wise, hows the PCB temperatures and power delivery? if the +12V is too noisy the VRMs will both run hot and throttle the GPU.
   
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post #2446 of 4152
MSI RX 480 Gaming X 4GB

1290/1750 @ 1050mv

Fan speed - 20% RPM
Max temp - 64 degrees
Ambient temp - 18 degrees

Temperatures taken after running Unigine Valley for 20 minutes. No dips in clocks.

Pretty happy overall. I could probably lower the temperature if I increased the fan speed of the card as well as my AF120s, but I have them all at low RPMs for noise purposes (AF120s at 640RPM).

I also did a repaste with Gelid GC-Extreme since I painted the shroud. Not sure what the temperatures were like with the stock paste or if my pasting job is good.

EDIT: Also ran some benchmarks and compared them to the Nitro+ RX 470 I had before. Scores are all graphic scores only, not the overall score.

MSI RX 480
3DMark11 - 19497
Firestrike v1.1 - 13071

Sapphire RX 470
3DMark11 - 18566
Firestrike v1.1 - 12953

Scores are exceptionally close. Is there something wrong with my RX 480? Shouldn't the RX 480 perform a lot better considering there are more compute units and stream processors? Only real difference between the two is the memory clock.

RX 470 - 1300/2000 @ 1.00V
RX 480 - 1290/1750 @ 1.05V
Edited by bernieyee - 11/29/16 at 12:22am
post #2447 of 4152
Quote:
Originally Posted by bernieyee View Post

MSI RX 480 Scores are exceptionally close. Is there something wrong with my RX 480? Shouldn't the RX 480 perform a lot better considering there are more compute units and stream processors? Only real difference between the two is the memory clock.

No, there will not be a huge difference. RX 480 is memory bound in most cases so the percentage difference in scores comes down to memory speed. In the worst case compute bound scenario, the RX 470 and RX 480 will only differ by ~10% if they are both at the same clock.

If your RX 470 was hitting 2000 memory, it will perform nearly identically to a 480 with 2000mhz memory (within 5-10% at equal core speed) and it will outperform an RX 480 that has slower memory in many cases.
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post #2448 of 4152
Quote:
Originally Posted by KarathKasun View Post

No, there will not be a huge difference. RX 480 is memory bound in most cases so the percentage difference in scores comes down to memory speed. In the worst case compute bound scenario, the RX 470 and RX 480 will only differ by ~10% if they are both at the same clock.

If your RX 470 was hitting 2000 memory, it will perform nearly identically to a 480 with 2000mhz memory (within 5-10% at equal core speed) and it will outperform an RX 480 that has slower memory in many cases.

At what resolutions do you mean though? though regardless, the actual results will vary depending on how complex the shaders are and whether they're actually optimised or not. In many cases, what appears to be a VRAM bottleneck is actually the shader only ever making use of a single texture unit per cycle, instead of sampling all the textures simultaneously.

Sounds like something someone should extensively test across many titles...
   
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post #2449 of 4152
Looking to pick up an RX480. Newegg's got the 4GB variant by MSI and by Sapphire at the same price ($200 before rebate). Which one is the one to have? Leaning towards the MSI for the 3 year warranty vs 2 years on the sapphire. Anything else worse considering?
post #2450 of 4152
Quote:
Originally Posted by Paul17041993 View Post

At what resolutions do you mean though? though regardless, the actual results will vary depending on how complex the shaders are and whether they're actually optimised or not. In many cases, what appears to be a VRAM bottleneck is actually the shader only ever making use of a single texture unit per cycle, instead of sampling all the textures simultaneously.

Sounds like something someone should extensively test across many titles...

It's simpler.

The bandwidth available in a 470/480 is not enough for the raw performance they have, to the point where it becomes a bottleneck. Running faster memory allows you to decrease it as there is more bandwidth. The 470 8gb nitro runs memory at 2000MHz compared to the rest of 470, which run at 1750MHz. And a 480 4GB has memory at 1750MHz compared to 2000MHz from the 8GB version.

With a 470 performing better than usual and a 480 worse than a 8GB model, it isn't strange they are both neck to neck, since the 480 only has 12.5% more shaders than a 470.

It has nothing to do with resolution or shaders.
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