AMD 7900XTX Overclocking can lead to LESS performance... Here's how

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[Jayztwocents]

This is not something I have ever experienced with any other AMD gpu series, nor is it something I am experiencing on custom cards... after trying multiple drivers, and unable to find anyone else talking about this, what are your thoughts as to why this happening? I will follow up when we hear from AMD.

[gimic]

Overclocking RDNA 3 is very different. Messing with the Minimum Clock Speed setting in any way can lower performance and causes all kinds of weird issues. Start with increasing Power Limit to +15 and then lower voltage until you get crashes. With the higher power limit as you lower voltage you will see your actual max clock speeds increase automatically. Once you find the lowest stable voltage in games (short benchmark runs will pass with much lower voltages than actual gaming will allow) you can try increasing the Max Clock Speed setting a little at a time and you might get higher clocks. Most people are finding that memory overclocks top out at around 2750 before performance regression starts. Power Limit can be lowered for lower thermals if needed but that's it for now with RDNA 3. Any other approach right now will most likely cause issues and/or not be stable.

[Nytevizion]

Undervolting is almost a must with these cards. My 5, 6 and 7 series cards all loved it. Core speeds haven't had much impact unless they were undervolted. Core min/max sliders on my 7900XT needs to be at least 4-500mhz apart or there's a performance hit. My 6900XT liked them to be as close as possible, (100mhz). My 7900xt likes 1025-1050 for voltage and at least 12% on the power tuning.

[StovnOG]

Jay my man, you're trying to OC like its an Nvidia card. You need to undervolt the card to create headroom. undervolt until it crashes, then increase the voltage a bit until its stable, then start messing with the clockspeeds and what not.

[theguy]

I love that the community corrected his method, I love my sapphire nitro 7900xtx, i undervolted that behemoth, and she roared. Annihilates anything I throw at it, outside RT.

[Smash_ter]

Considering that this is a new approach to how GPUs are made, there are different approaches you also need to take as well including core voltage, which i didnt see you adjust at all and left it high.

[VentureNW]

Missing the undervolting... the most important part of tweaking a 5000+ AMD GPU

[DaxMoon]

You are way too bias towards Nvidia. AMD adrenalin software is miles better than Nvidia. BTW, you just need to get familiar with the software and how AMD architecture works. I have owned a 5700xt, 6800xt and 7900xtx and they are easy to OC and UV. Also, I was able to extract between 15-20% increase in performance, easily outperforming the 4080 in raster, and sometimes matching the 4090. I have never experienced any of the issues you show in your video. AMD is the underdog against the evil pricing of Nvidia, and should be supported and commended for their efforts in pricing more competitive than team green. Your video is misleading as you don't know how AMD OC works and just helps Nvidia getting away with their greedy prices

[thepcenthusiastchannel]

This is why you're supposed to undervolt...

You're hitting the power limit of the card. There is a way to disable this power limit in the Windows registry though. I've done it with a Vega56 and Gamer's Nexus has a video on it. But if you don't want to registry tweak then undervolt in order to stay within that power limit. We've known this since R9 Fury/Vega but it really became a big thing with the RX 5700 XT.

By undervolting I have a 6800 XT running 2.8GHz on water. Real easy to do.

[Daxc]

I think they engineered the reference for efficiency because they didn't wanna look bad claiming they were more power efficient than nvidia and proceed to drop a card that matches power consumption. Sticking to 2-8pin connectors is in my opinion what knee capped it. The board shouldn't be allocating power to other places unless the total board power isnt enough. The issue seemed to be fixed once you switched to the 3-8pin red devil.

[jacobrohner]

I had good results undervolting the gcd cores -60mv the extra thermal and power budget allowed the boost algorithm to boost ~200 mhz higher at stock wattage and ~400mhz higher at +15% power. As for memory it didn’t seem to scale well. Had a 10% fps increase in warzone 2.0. I have the XT which may be different though

[geerstyresoil]

You need to power unlock rdna GPUs to get any real performance boosts. Jay should know this. I can get get close to 20% performance boosts on 6900 XT when power unlocked with more power tool on water. Stop perpetuating AMD can't overcloxk myths...

[Dell-olhb]

This is just the wrong approach for overclocking AMD cards, you have to raise the power limit and undervolt them first and usually the clock speed will increase on its own

[slip]

The size of that monitor and the distance it is from your face is like a monty python sketch xD

[jermsman]

What an awesome day it is to have access to all this data and quality content. Sure beats the old days of a magazine how to and a prayer that it works!

[LetsGetTechy]

I know this video was already long enough for most folks, but I really wish he would have tried a shunt mod, to see if increased power remedies the issue.

I was able to get a reference XTX for my nephew for Christmas, and this really makes me wanna put it in my system, see if the behavior is the same as this, and then shunt mod it to see if that fixes it.

[RegazozoGaming]

On my 6900 xt I had zero luck with Clock Overclocks, the card just got hotter and gave no gains and even some lost performance. Undervolting, Ram OC & Timings, AND Fan Curve adjustment got me nearly 11% more performance out of the card. PowerColor Red Devil 6900 xt - 2350 min clock, 2450 max clock, 60Mv reduction, 2100 Ram with Fast Timings, no adjustment to power slider left it at 0, Fan curve Temps 30, 40, 45, 50, 55 and Fan Speed 35, 45, 50, 55, 60. Stock settings 19100 Timespy GPU score to 21600 which was roughly 11% performance increase. Core speed for RDNA cards is not now you OC or tweek the cards.

[b_]

Amd overclocking is always a mess for the first few months. It has been this way since Vega. Be careful with the minimum clock tho. Just try to get max as high as possible, just like an nvidia offset.
With RNDA2, there is morepowertool to increase power limit as high as you want to. I got my 6900xt to pull 600w in furmark, but it always settled between 300 and 350 in games. There will probably be a version for RDNA3 as well.

[JackyNg]

I think the bottleneck may come to the frequency between the connection of GCD and MCDs. Maybe something like AM4 platform, it will have the best performance when the IF and RAM speed become sync.

[JordanK]

Super weird issue for sure, but I'm still looking forward to getting one for myself. My 2070 is starting to struggle with modern titles in 1440p. This is going to be a huge step up!