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[OFFICIAL] AMD Radeon RX 7900 XTX/XT Owner's Club

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#8,986 ·
On my Taichi 7900 xtx the hotspot delta is 30°C at 400W load, which is way higher than on my Nitro+ at 15°C. Will it be beneficial to change the thermal paste on the Taichi? Or is it the vapour chamber on the nitro that makes it have a lower delta? It's the hot spot that is the issue as the GPU temperature is about the same.

Edit. On the Nitro, the cooler could handle 520W, running the Extreme BIOS. But the Taichi can't even handle 460w. So it would be really beneficial to lower the hot spot temperature.
 
#8,987 ·
freddy85 said:
On my Taichi 7900 xtx the hotspot delta is 30°C at 400W load, which is way higher than on my Nitro+ at 15°C. Will it be beneficial to change the thermal paste on the Taichi? Or is it the vapour chamber on the nitro that makes it have a lower delta? It's the hot spot that is the issue as the GPU temperature is about the same.

Edit. On the Nitro, the cooler could handle 520W, running the Extreme BIOS. But the Taichi can't even handle 460w. So it would be really beneficial to lower the hot spot temperature.
Click to expand...
30 delta is pretty standard in my experience, I see the same on my Pulse (with 550W bios) on water, and on my reference MBA Powercolor also on water.

The delta doesn't really matter if the max hotspot is still reasonable. If you're under 110C then you shouldn't be thermal throttling, though most would say to aim for under 90C or 100C.
 
#8,988 · (Edited)
Got a question for 7900xtx people:

heres the problem im trying to solve:
My 6800xt will no longer quite cut it for upscaling to 4k. Its an air cooled card, but i heavily modified it for noise so it will act as an HTPC. The issue is I only just barely managed to get it quiet enough, so i probably won’t be able to with a card that draws MORE watts, which is my only option, so custom open loop water with a full coverage block. I was looking at a 9070xt but the waterblocks are only available from one company, only available new, and are like 30% of the price of the card and double the price of the whole rest of the loop (I’m lowballing it).
So I’m looking at older cards in that performance range. So 4080FEs, 7900XTXes, and a 5080fe that is more but available with a waterblock used.
The 7900xtx is supposed to be the slowest of the 3 at ray tracing (which has grown in importance and which I think will eventually dominate) but it also relatively inexpensive compare to the other stuff because i can buy both it and a waterblock for it used) and has the most memory so it will likely last the longest.
My question is this: exactly how strong is it?
Im going to be upscaling to 4k so what fps of heavily ray traced game at whatever upscaling grade looks decent? The 6800xt has FSR2 and while 1440p and one level does, 1080p and 2 levels doesn’t. I have little data on the 7900xtx. Ive never seen its fsr for one thing.
I’m stuck with the 4k monitor and the HTPC noise requirement. I literally had to install the monitor. Ot’s bolted to the building, and there just isn’t ROOM for two machines. The place is small. Going “one machine to rule them all” hasn't really been a choice, and all the cabling (and there’s a lot) had to be fished.
 
#8,989 ·
bombastinator said:
Got a question for 7900xtx people:

heres the problem im trying to solve:
My 6800xt will no longer quite cut it for upscaling to 4k. Its an air cooled card, but i heavily modified it for noise so it will act as an HTPC. The issue is I only just barely managed to get it quiet enough, so i probably won’t be able to with a card that draws MORE watts, which is my only option, so custom open loop water with a full coverage block. I was looking at a 9070xt but the waterblocks are only available from one company, only available new, and are like 30% of the price of the card and double the price of the whole rest of the loop (I’m lowballing it).
So I’m looking at older cards in that performance range. So 4080FEs, 7900XTXes, and a 5080fe that is more but available with a waterblock used.
The 7900xtx is supposed to be the slowest of the 3 at ray tracing (which has grown in importance and which I think will eventually dominate) but it also relatively inexpensive compare to the other stuff because i can buy both it and a waterblock for it used) and has the most memory so it will likely last the longest.
My question is this: exactly how strong is it?
Im going to be upscaling to 4k so what fps of heavily ray traced game at whatever upscaling grade looks decent? The 6800xt has FSR2 and while 1440p and one level does, 1080p and 2 levels doesn’t. I have little data on the 7900xtx. Ive never seen its fsr for one thing.
I’m stuck with the 4k monitor and the HTPC noise requirement. I literally had to install the monitor. Ot’s bolted to the building, and there just isn’t ROOM for two machines. The place is small. Going “one machine to rule them all” hasn't really been a choice, and all the cabling (and there’s a lot) had to be fished.
Click to expand...
To be honest I still wouldn't put too much importance in RT


I would say we are still at least two gens / 5 years out from the hardware being capable enough for decent RT/PT.

What do I mean. We are trying to use RT as a replacement for rasterized rendering. The problem is IRL light sources like lights the sun etc emit millions of light rays. Current GPUs can't trace enough rays for it to be realistic, hence the noisy images when RT is on.

So based on that I purchased the XTX as it was raster first with some RT capabilities. It can still do RT for games that absolutely it. And you can crank the RT settings to low to get good frame rates if that is what you are after. And it can still do decent enough RT when you need it.

The nice thing about XTX is it can scale pretty well. If you want it quiet you can UV it and get around 9070XT performance still. And it will scale all the way to about 600watts if you want to get the extra power which will get you to around 4090 levels of raster and 5070ti levels of RT.


With 600watts you can get
8.1K steel Nomad.
8K speedway (RT)
21K Port Royal (RT)
~50fps 1080p Cb2077 RT overdrive ultra (no upscaling all native with PT enabled)
 
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#8,990 · (Edited)
Alastair said:
To be honest I still wouldn't put too much importance in RT


I would say we are still at least two gens / 5 years out from the hardware being capable enough for decent RT/PT.

What do I mean. We are trying to use RT as a replacement for rasterized rendering. The problem is IRL light sources like lights the sun etc emit millions of light rays. Current GPUs can't trace enough rays for it to be realistic, hence the noisy images when RT is on.

So based on that I purchased the XTX as it was raster first with some RT capabilities. It can still do RT for games that absolutely it. And you can crank the RT settings to low to get good frame rates if that is what you are after. And it can still do decent enough RT when you need it.

The nice thing about XTX is it can scale pretty well. If you want it quiet you can UV it and get around 9070XT performance still. And it will scale all the way to about 600watts if you want to get the extra power which will get you to around 4090 levels of raster and 5070ti levels of RT.


With 600watts you can get
8.1K steel Nomad.
8K speedway (RT)
21K Port Royal (RT)
~50fps 1080p Cb2077 RT overdrive ultra (no upscaling all native with PT enabled)
Click to expand...
I’m a big fan of non intrusive upscaling. It’s arguably a game changer. That 6800xt does NOT have the power to do native 4k tiny Tina at anything like decent fps, but it CAN do it at 1440p. So I would run it at 1440p, upscale to 4k, and get tiny Tina at 100 fps which IS (at least for my old slow eyes) fast enough.

The problem is it’s also got original FSR so while I CAN run new stuff at 1080p and then upscale to 4k and get a usable frame rate I CAN’T do it without enough artifacting that it gets annoying. So more card.

The 7900xtx is supposed to have fsr 2/3 which isn’t a lot better but is “fsr4 compatible”. The problem is I don’t know what that means. FSR4 WILL do more than 1 level of upscaling and that would be a very nice emergency backstop for the future. IF it does what I need it to.

I really like the amount of memory the XTX has. Im worried it won’t do what I need a year from now though. The whole point of getting a card with all that memory is longevity.
 
#8,991 ·
75Vette said:
30 delta is pretty standard in my experience, I see the same on my Pulse (with 550W bios) on water, and on my reference MBA Powercolor also on water.

The delta doesn't really matter if the max hotspot is still reasonable. If you're under 110C then you shouldn't be thermal throttling, though most would say to aim for under 90C or 100C.
Click to expand...
Hi 75vette, how are you getting your Pulse 7900 XTX to pull 550W? I’ve tried overclocking mine but I always hit the power limit. I’ve never flashed the BIOS, so I’m not sure how safe it is — can you just flash any other 7900 XTX BIOS or is there a real risk of bricking the card? Also, is there any way to unlock more power without flashing?

Before switching to the KryoSheet, I had issues with thermal paste getting pumped out, so I gave up on silicone pastes and decided to try the Thermal Grizzly KryoSheet — and honestly, I couldn’t be happier with it. Since then, my hotspot stays between 60–66 °C (max 70 °C), and memory hits around 72 °C.

I run some 3DMark Time Spy Extreme tests at 1028 mV with core clocks between 3200 and 3380 MHz, memory at 2780 MHz, and +15% power limit. But the actual clocks stayed around 3150–3250 MHz most of the time — I guess because of the power limit. Could that be the reason?
 
#8,992 ·
FisherBoxFX said:
Hi 75vette, how are you getting your Pulse 7900 XTX to pull 550W?
Click to expand...
I flashed the Asrock Aqua bios, then ran the Asrock Extreme bios .exe that updates it to 480W (552W with 115% PL). Lots of posts in this thread on how to do it.

FisherBoxFX said:
can you just flash any other 7900 XTX BIOS or is there a real risk of bricking the card?
Click to expand...
Yes you can flash any other bios (generally). The risk of bricking depends on the method.

I used a CH341a to physically flash a new bios. Medium difficulty as you need to dismantle the card somewhat to gain access to the bios chip and you'll need a second PC or to use your iGPU if your CPU supports it. Relatively safe as you always have the option to rewrite a known good bios if something goes wrong.

There is a way to software flash now, again it's buried in this thread. Higher risk of bricking IMHO, especially with a card like the Pulse which only has one bios, as you don't have a fallback if it goes wrong, having said that, you can still use a CH341a ($20) to physically rewrite the bios if you do happen to brick it with the software method.

FisherBoxFX said:
Also, is there any way to unlock more power without flashing?
Click to expand...
Yes, and this is probably the preferred method now, though you do need to be careful what values you use as you can unlock some limitless power draw.

Software removing RDNA3 & RDNA4 (desktop class) power limits and adding VID offsets. | Overclock.net

Requires Linux to perform the table rewrites, but can be rebooted into Windows and used until next system power off, or made permanent to endure power cycles.

FisherBoxFX said:
KryoSheet
Click to expand...
I'm using it on both my 7900 XTXs, that or PTM are they only way to go.

FisherBoxFX said:
I guess because of the power limit. Could that be the reason?
Click to expand...
Extra powerlimit will help to a point, until you thermal throttle. Both my cards are watercooled, but if you run 550W on air there is a risk you'll see hotspot rise so high the card clock throttles to keep it under control.
 
#8,993 · (Edited)
75Vette said:
30 delta is pretty standard in my experience, I see the same on my Pulse (with 550W bios) on water, and on my reference MBA Powercolor also on water.

The delta doesn't really matter if the max hotspot is still reasonable. If you're under 110C then you shouldn't be thermal throttling, though most would say to aim for under 90C or 100C.
Click to expand...
I ended up replacing the paste, at 460w the delta was 40c. Now it is 25°C. I took the picture after I had started removing the paste, but the corner had really bad/no coverage.
Regarding disassembly, it was very difficult because of the screw location for the brace. But got it done and it didn't take too long.
 

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#8,995 ·
freddy85 said:
I ended up replacing the paste, at 460w the delta was 40c. Now it is 25°C. I took the picture after I had started removing the paste, but the corner had really bad/no coverage.
Regarding disassembly, it was very difficult because of the screw location for the brace. But got it done and it didn't take too long.
Click to expand...
What was the load you're using here? Looks like Furmark given the low core clock speed? If it's a game then you are (were) very likely thermal throttling.

A repaste often sees the delta drop like you've observed, but if you've not used PTM or Kyrosheet then you can only expect that to last a few months at best. Your Vram temps are a little high too, would probably benefit from replacing pads with a good thermal putty (I like Upsiren UX Pro).
 
#8,996 ·
Furmark low loading gpu mine 7900xtx sapphire nitro+ on this test has hot spot 96 but on games 2-3s of game give 100c. I handed it in for repair under warranty. This is not good, 100+ degrees in a few seconds and up to 110 over time. It is impossible to use such a card, the fans at maximum speed make unbearable noise and cann't cool chip. This model was praised everywhere for using 7950 instead of thermal paste, but in fact it is crap
 
#8,998 ·
75Vette said:
What was the load you're using here? Looks like Furmark given the low core clock speed? If it's a game then you are (were) very likely thermal throttling.

A repaste often sees the delta drop like you've observed, but if you've not used PTM or Kyrosheet then you can only expect that to last a few months at best. Your Vram temps are a little high too, would probably benefit from replacing pads with a good thermal putty (I like Upsiren UX Pro).
Click to expand...
Yep, its Furmark.
Thermal pads are intact, the slightly higher mem temps are because of lower fan speed. But I agree, its a bit high. Will see, I put a ton of thermal paste so hopefully it will last for some time.
 
#8,999 ·
ok here goes, Ive spent the last few days looking for a way to flash my 7900xtx asrock phantom gaming card with the stock aqua bios (extreme bios end goal) first with amdvbflash (ik it cant work now after a lot of trouble shooting with the command line because the graphical interface was discontinued ) and now with a ch341a programmer and every software I could find that's not only written in Russian and or Chinese. the furthest I've gotten is here(screenshot) with as programmer. I have a water block and was able to get really good results on stock bios, I just cant for my life get this programmer to work and to top it all off every time I try looking for a 7900xtx guide it goes like, get programmer, get bios, flash bios(no steps) and test if it worked, looking for a guide, scroll for it its somewhere in the 450 pages here. can someone please take pity and share a link to the guide for my 3 braincells Screenshot-82 hosted at ImgBB
 
#9,000 ·
MonkeyBuiltPC said:
ok here goes, Ive spent the last few days looking for a way to flash my 7900xtx asrock phantom gaming card with the stock aqua bios (extreme bios end goal) first with amdvbflash (ik it cant work now after a lot of trouble shooting with the command line because the graphical interface was discontinued ) and now with a ch341a programmer and every software I could find that's not only written in Russian and or Chinese. the furthest I've gotten is here(screenshot) with as programmer. I have a water block and was able to get really good results on stock bios, I just cant for my life get this programmer to work and to top it all off every time I try looking for a 7900xtx guide it goes like, get programmer, get bios, flash bios(no steps) and test if it worked, looking for a guide, scroll for it its somewhere in the 450 pages here. can someone please take pity and share a link to the guide for my 3 braincells Screenshot-82 hosted at ImgBB
Click to expand...
At first I flashwed my Nitro+ silent bios with ASrock Aqua bios but turns out it was unstable after 3000+mhz on core.
fpsflow create a Linux guide how to unlock 7900XTX, pretty much all 7900XTX AIBs, u can try tho.
Curently I am on stock Nitro+ bios with unlocked TDP and it runs so far so good. 3100MHZ on core solid. 75-90C On hotspot depends on game and room temps. Stock cooler.
Here is the link: https://www.overclock.net/threads/s...removing-rdna3-rdna4-desktop-class-power-limits-and-adding-vid-offsets.1816083/

U dont even need to install linux, can do it form live usb. Chat GPT can help u what u need to copy and paste in terminal.
 
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