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The Radeon RX 7900 XT(X) Owners Thread.
- Thread starter Kaapstad
- Start date
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i sold my Sapphire 7900 xtx and have a Zotac 4090 amp extreme, but i regret it, I feel like gameplay felt smoother on the 7900 xtx even though the 4090 is faster (especially in RT), just feels more clanky on the 4090, I don't want to sell it though as I am only going to get around £1300 for it!
Caporegime
- Joined
- 18 Oct 2002
- Posts
- 30,831
Felt something similar going from a 4080 to the XTX, and faster overall to boot (without the RT bs).
So far...several hours in Aliens: Dark Descent without issues. 1060mv froze after a couple of hours.
As someone else said though, with the XT the max is 1100mv compared to the XTX's 1150mv, so its only -30.
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I highly suspect the CPU overhead on nvidia's drivers has an impact on frame-pacing.
See the post above by Trypta about Nvidia driver overhead. Unless you have the very very best cpu available then the 4090 is not always the best choice. I do not fully understand it but in a lot of titles AMD do better than Nvidia when paired with a with slower cpu. If you are still rocking the 3800x in your sig then it will be more limiting on the 4090 than it would have been with the XTX.
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Soldato
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Ahh no sorry my sig is way out of date, I have a 5800X3d now as a cpu and 32gb of ram, it runs well but definitely felt smoother on the xtx, without RT of course. Like I said I would sell the 4090 but I will lose about 400-500 on that, so gonna have to keep it for now.
Bad Experience with Saphire Nitro + (7900XTX). I had ordered an XFX MERC as the Saphire card was out of stock at the time of ordering. Then the Saphire went back in stock and I pulled the trigger and got one, with the intention of returning the XFX MERC, to my surprise the XFX MERC preformed much better (while a lot louder) at the same fan speeds (2100 RPM). When at stock doing Time Spy Extreme the XFX MEC would have temps of 44 degrees on the edge and 64 degrees on the Hotspot, on the other Hand the Saphire Nitro + was at 50 degrees edge and 75 degrees hotspot. It got worse with Overclocking for the Saphire Card, with UV of 1090mV, 2400MHz min clock, 3200MHz max clock, 2624MHz mem Clock Fast Timings (Could not do more than that as it is Samsung Memory) and +15% PL, the Temps where 58 degrees on the edge but 86 on the hotspot, while the MERC with all same settings except memory as it could go to 2744MHz (Hynix Memory) gave me temps of 48-50 degrees edge and 68-70 degrees hotspot. Also the Results where higher on the XFX Card compared to Saphire. I tried using Kryosheet to see if it was a bad case of thermal paste application on the Saphire Nitro +, but still Hotspost got into the same level (Worse while gaming creeping into the 92 degrees) I was thinking now just to return the Saphire and keep the XFX MERC. Or I could try my luck with an ASrock Taichi as that is my favorite design and the XFX is pretty loud lol. What do you guys think I should do? Thanks!
Caporegime
- Joined
- 18 Oct 2002
- Posts
- 30,831
Yup at least AMD got a handle of that over time, it seems like Nvidia haven't even tried to!
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Soldato
Stop it and focus on the RT, DLSS features!...
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Leave min clock at 500mhz, no reason for it to be higher, you're just making it less efficient.
Check your mounting pressure, I wasn't a fan of the mounting screws on the sapphire and replaced them with these:
https://amzn.eu/d/96kpWpC
I took the springs of and attached them the leaf spring that came with the GPU and re attached the springs under it then mounted again. The screws have built in stand offs so you can just tighten them all without worrying about the mounting pressure being off.
But I suspect the main difference is that your nitro+ has a higher leakageID than your XFX. Volt leak on standard 5nm is a problem on more dense areas of the chips. The GCD on Navi31 is very dense and makes it more susceptible to dynamic IR drop. The symptoms of this are high voltage needed to reach high clocks and high hotspot temps.
If this isn't the case check the cold plate on the nitro+ mine was a bit scuffed but ptm7950 solved all issues I had
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I see I had this idea also that it could just be how there could be mounting problems and not enough contact is being made to cool the way it needs I will try your mounting screw solution before sendingvit back, just to check. I did check the thermal pads as they could also be causing problems maybe not going down enough with pressure, but this doesn't seem to be the case. Thanks a lot for the suggestions.
Edit: Do you think that Samsung Memory is really that bad compared to Hynix? What seems to be the theory behind this? Thanks!
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Associate
Hmm. Turned off 'Tesselation' in NMS settings and things are back down in the 70s/80s. Weird- my old Vega didn't like tesselation either... must be an AMD thing...
Planning to waterblock it eventually (Bykski have made a block for this card, apparently) so perhaps I'll stick with it for now.
Associate
The easiest way to understand it is that Nvidia does more through the driver- like command scheduling. AMD does this through hardware instead, so the CPU is doing less work with AMD's driver.
This is more noticeable the faster the GPU is- for example, the 4090 can process commands quickly but needs to be fed quickly too, so the quicker the GPU, the quicker the CPU needs to schedule those commands for the GPU and order them efficiently. This creates a bottleneck that's not present with AMD since the GPU schedules and sorts it's commands itself.
Soldato
- Joined
- 16 Aug 2009
- Posts
- 7,963
Mine was fine too boring looking card but perfectly serviceable
Soldato
Are any of you using anti-lag? It's worth enabling?
There is measurable lag input lag reduction while using it, just nothing carzy. Still worth it in my opinion.
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75c hotspot temp is pretty darn good if the card is running full load. Nothing wrong with the nitro but it does sound like you got lucky with the silicon on the XFX. If I were in your shoes I would just adjust the fan profile for the XFX down a bit and let the hotspot temp creep up until around 80-85 degrees. I think you will find that the card gets a lot quieter then and its perfectly fine at that temp.
Hello , i m the owner of a powercolor red devil 7900xt. Recently i noticed in 3d mark that while my gpu temp is 70 the hotspot goes at 110 . I m thinking of repasting it, does anyone knows what the size of the thermal pads used for the ram and vrm? cause i may change them too.