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AMD Debuts Radeon RX 9070 XT and RX 9070 Powered by RDNA 4, and FSR 4

wanted more upgrade than the 9060xt gave, so picked up a powercolor reaper 9070. pretty happy so far.

1766556021969.png

(timespy)
update post: https://hardforum.com/threads/amd-d...d-by-rdna-4-and-fsr-4.2039010/post-1046271463
 
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I picked up 9070 a month or so ago. First AMD card since 9800 Pro.

One thing I've noticed is that while watching YouTube on Firefox (thinking about hardware decoding) that I get somewhat frequent rendering pauses (audio continues) specifically when moving around or resizing Windows.

Is this normal for people with AMD cards or just possibly an issue with the latest few builds of FF? This was a fresh Windows 11 25H2 install after card was installed.
 
bigdogchris said:
I picked up 9070 a month or so ago. First AMD card since 9800 Pro.

One thing I've noticed is that while watching YouTube on Firefox (thinking about hardware decoding) that I get somewhat frequent rendering pauses (audio continues) specifically when moving around or resizing Windows.

Is this normal for people with AMD cards or just possibly an issue with the latest few builds of FF? This was a fresh Windows 11 25H2 install after card was installed.
Click to expand...
i dont get anything like that with edge. try edge/chrome for a bit, see if it does it too.
 
bigdogchris said:
I picked up 9070 a month or so ago. First AMD card since 9800 Pro.

One thing I've noticed is that while watching YouTube on Firefox (thinking about hardware decoding) that I get somewhat frequent rendering pauses (audio continues) specifically when moving around or resizing Windows.

Is this normal for people with AMD cards or just possibly an issue with the latest few builds of FF? This was a fresh Windows 11 25H2 install after card was installed.
Click to expand...
Or a network/win 11 thing. Just finished watching several 2 hr movies on you tube with no playback issues at all. Still on a very old win 10 install though.
 
bigdogchris said:
I picked up 9070 a month or so ago. First AMD card since 9800 Pro.

One thing I've noticed is that while watching YouTube on Firefox (thinking about hardware decoding) that I get somewhat frequent rendering pauses (audio continues) specifically when moving around or resizing Windows.

Is this normal for people with AMD cards or just possibly an issue with the latest few builds of FF? This was a fresh Windows 11 25H2 install after card was installed.
Click to expand...
I also recently picked up a 9070XT and do not have that issue
 
It's also nearly impossible for some to perceive.

I've seen people talk about how 20 FPS in games is "running great", or how they have never experienced microstutter in Unreal Engine 5 titles.

That said, I've experienced the rendering pauses and stutters and I'm on Nvidia, I don't think it's an AMD thing so much as some kind of background task that is jumping the thread queue?
 
VC++ or sfc repair, HAGS disable, or in the end DDU to remove all drivers, but yeah something broken.
 
I've found in the past a mechanical hard drive on the fritz can cause issues like stuttering/hanging. Just throwing that out there. I don't know if you have any spinners though.
 
Have you checked local playback?

haste said:
I've found in the past a mechanical hard drive on the fritz can cause issues like stuttering/hanging. Just throwing that out there. I don't know if you have any spinners though.
Click to expand...
Windows can have horrible stability problems with faulty drives in my experience. It also likes to wait when spinning up a drive.
 
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I quit using FF years ago, but I have never seen any video playback issues with an AMD card. 6800XT, 7800XT, or 9070XT.
Doesn't mean they all act the same for everybody.

I'd probably ditch FF, or at least try another browser and see if the problem persists. My bet is it's an FF issue.
 
DogsofJune said:
I quit using FF years ago, but I have never seen any video playback issues with an AMD card. 6800XT, 7800XT, or 9070XT.
Doesn't mean they all act the same for everybody.

I'd probably ditch FF, or at least try another browser and see if the problem persists. My bet is it's an FF issue.
Click to expand...
Considering they no longer care about your privacy, yeah... I left them a few months ago.
 
bigdogchris said:
I picked up 9070 a month or so ago. First AMD card since 9800 Pro.

One thing I've noticed is that while watching YouTube on Firefox (thinking about hardware decoding) that I get somewhat frequent rendering pauses (audio continues) specifically when moving around or resizing Windows.

Is this normal for people with AMD cards or just possibly an issue with the latest few builds of FF? This was a fresh Windows 11 25H2 install after card was installed.
Click to expand...
I can't speak to AMD GPUs on firefox in specific but I've had issues with video playback and firefox for literal years. I would specifically boot up Edge for watching youtube or any sort of video content. Firefox has had issues for literal years.
 
ivandagiant said:
I can't speak to AMD GPUs on firefox in specific but I've had issues with video playback and firefox for literal years. I would specifically boot up Edge for watching youtube or any sort of video content. Firefox has had issues for literal years.
Click to expand...
You need to check your system out because something is very likely not working properly. I've used FF for years as well (+different GPUs) and never had a problem.
 
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Firefox actually has very intuitive PiP mode and it works way better than edge or chrome
 
pendragon1 said:
wanted more upgrade than the 9060xt gave, so picked up a powercolor reaper 9070. pretty happy so far.

View attachment 774651
(timespy)
Click to expand...
so after a few weeks of playing with it ive got it at -90mv, 2700 ram and +5% power limit. in everything but 3dmark that gives me 2600-3100+ sustained core speeds, way beyond what its rated at and even beating the 9070xt speed. temp wise im getting under 60c core, hotspot is low 70s, ram is high 70s, using ~50% fan speed. the whole setup is now probably quieter than my custom loop was, and its less annoying/noticeable than the BD drive in my PS5... pretty happy with it.


now 3dmark is another story... i have to just crank everything up for it to even register an OC but it will run 3dmarks tests at -150, 2800 core/ram, +10% power. beats 5070s, i think...
1770071652015.png

(changed to my highest score)

added:
Screenshot 2026-02-02 175132.png

wont validate, says im offline, but my internet is fine...

stock speed comparison(powercolor reapers)
1770076794953.png
1770076825126.png


edit: in forza motorsport it runs at ~2900, pga 2k25 it runs at ~2700. sustained, not boosts. very impressed....
 
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bigdogchris said:
This may be related to the issue I'm experiencing with YouTube appearing to lock up when I'm moving around a lot of windows.

https://www.reddit.com/r/AMDHelp/comments/1qmlawl/firefoxs_performance_settings_aka_hardware/

I did disable HA yesterday but haven't watched enough yet to feel out if it's helping.
Click to expand...
I thought maybe this was an AMD issue, but now I'm at my work desk and youtube is still freezing occasionally. I'm using vivaldi in both places, so maybe that's my mistake haha.
 
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Decko said:
I thought maybe this was an AMD issue, but now I'm at my work desk and youtube is still freezing occasionally. I'm using vivaldi in both places, so maybe that's my mistake haha.
Click to expand...
I ended up turning HA back on, but switched Firefox to run on my Intel iGPU rather than AMD to make my test a bit closer to the original problem.
 
So a few days now with Hardware Acceleration off on Firefox and the YouTube glitching hasn't occurred. So it's either a FF issue or an AMD driver issue.
 
pendragon1 said:
use edge or chrome for a bit, if it doesnt do it, its ff. which is what i suspect.
Click to expand...
I can try that.

Just to clarify, when I say glitching, what happens is -- I frequently snap windows to the edge off the screen to have 2 side by side open. When snapping to the side (sometimes) Firefox stops rendering video (it freezes) but the audio continues to play. After a few seconds it starts to render video again. Disabling HA fixes this.
 
happy bday, little buddy
1772303468609.png


still kinda playing with it, got occasional ram glitches, i think. got a couple flickering black squares in pga, so i backed off a bit.
i now have it with -90v, 2650 ram, no extra power. now the core boosts to about 3200 in motorsport and 2800+ in pga, runs a couple degrees cooler/quieter and no glitch blocks.
 
they only get better with it. try -80 on the voltage and +100 on the memory start, most of the 9070/xts do that no prob. then play with the fan curve to get temps you like*. and make sure the backplate gets airflow to help keep the vram temps down.

*mine:
1775347030686.png

core is high 50s, hotspot is low 70s, ram is high 70s. if it doesnt get airflow from my case fans, ie i forget to turn them up for gaming, vram gets to the high 80s...
 
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pendragon1 said:
they only get better with it. try -80 on the voltage and +100 on the memory start, most of the 9070/xts do that no prob. then play with the fan curve get temps you like. and make sure the backplate gets airflow to help keep the vram temps down.
Click to expand...
Thank you!
 
-80mv might be a bit too much uv for some cores but -40-50 isn't a bad result either. Only the best cores hit -80-100 from what I've seen. I'm also basing my results from stability in VR environments which tend to be more demanding of stability.
 
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