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Radeon RX 9070 XT require UEFI

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15 Jun 2013
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Hi all. I recently upgraded my GPU to the 9070 xt. The rest of my system is a little dated with an Intel Core i9-9900K and Gigabyte z370 d3. When I boot my system I get a message through the AMD app saying it does not support CSM and that I need to upgrade to UEFI. When looking at the process to do this, needing to convert the hard dirve is non reversable and I am worried about something going wrong.

It does say under my BIOs settings, "CSM support - enabled" / "other PCI devices - UEFI". I tried to upload a BIOs image but wouldnt work.

The point is, the card seems to be workingat 100%, so what benefits would I see by doing this process? Is there something it's NOT doing because of this CSM thing? Should I return and go Nvidia? Not sure how to proceed here.

Thanks!
 
Trying to update BIOS and doesn't work? Maybe USB too big, wrong partition system.

Not sure what negatives in using CSM for modern hardware, I guess some windows updates and extra things like TPM/drive encryption, and BIOS level control from windows/security.
 
With my previous PC I had the same issue as you OP, I sold my 9070 XT on because of it. I read somewhere that unless you convert to UEFI the GPU won't run as good as it could do, but please check up on that yourself, I could be mistaken.
 
With my previous PC I had the same issue as you OP, I sold my 9070 XT on because of it. I read somewhere that unless you convert to UEFI the GPU won't run as good as it could do, but please check up on that yourself, I could be mistaken.
the real test for that is to just run some games and benchmarks never to go by what you read somewhere random unless you have issues
 
the real test for that is to just run some games and benchmarks never to go by what you read somewhere random unless you have issues
I didn't bench mark it because what would I compare it to? Who else would be running a i7 7700K with a 9070XT benchmarking the same game? Iirc it was from somewhere pretty reliable I read it from it wasn't just some Reddit comments etc. I've advised OP checks this out for himself.
 
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I didn't bench mark it because what would I compare it to? Who else would be running a i7 7700K with a 9070XT benchmarking the same game? Iirc it was from somewhere pretty reliable I read it from it wasn't just some Reddit comments etc. I've advised OP checks this out for himself.

I'd have compared what a new modern CPU has similar performance to the the 7700K, then just do videos of 9070XT. That way get an idea how much you're losing.

Resizeable bar on Intel makes a big difference if it's like that sure...but if it's like 5% or something like that? nah
 
I'd have compared what a new modern CPU has similar performance to the the 7700K, then just do videos of 9070XT. That way get an idea how much you're losing.

Resizeable bar on Intel makes a big difference if it's like that sure...but if it's like 5% or something like that? nah
Now that I think about I seem to think it was the AMD software I had installed that said it and I remember 10% but OP should confirm this before worrying about it.
 
The main benefit is re bar. Which means the GPU is able to access all of your RAM instead of a small portion. So you stay in bios mode you are leaving performance on the table. How much difference this makes I’m not sure. I think it’s very much game dependent.
 
The main benefit is re bar. Which means the GPU is able to access all of your RAM instead of a small portion. So you stay in bios mode you are leaving performance on the table. How much difference this makes I’m not sure. I think it’s very much game dependent.

A big difference on the Intel 580. Not sure about other brands.

 
But the card is working with my current settings, what benefits would I get from messing around converting HDD and updating BIOS etc?
Eh, if it’s working and you’re getting enough performance, leave it as is.

I’m always a fan of updating a BIOS but the fact that you’re not able to is concerning and a failed BIOS update might brick your system and be a pain to repair (you could just buy a new BIOS chip from an online market if you need FYI)

Your system isn’t new but is probably fast enough for you if your only concern is the message you’re getting in the BIOS.

Windows 10 is EOL and will not receive updates as of October this year AFAIK so that is a concern.
 
I'd probably update my system config to not be using a boot system from 1983 with a £600 graphics card from 2025.

Updating the bios usually requires a FAT32 thumb drive with the CORRECT bios in the root directory. Plenty of guides about.

Converting windows from MBT to GPT is also possible. Plenty of guides for this too.
 
strange I'm getting same error message and it is annoying... nevertheless performance seems to be in line - BO6 1440p maxed out I'm getting 150-180 fps.. Steel Nomad scores me 7.9k in Vulkan... I will be upgrading my whole CPU Mobo end of the year anyway so no drama from my point of view :)
 
I could be wrong, but with a 9900K I reckon you'll be pretty CPU bound in many scenarios so I doubt that you'd gain much performance anyway, so perhaps don't bother until whenever you do a platform upgrade.
 
But the card is working with my current settings, what benefits would I get from messing around converting HDD and updating BIOS etc?
If it works, it works, don't worry about it. If/when you upgrade the 9900K, you can do it then. The process of conversion isn't that bad, by the way, but obviously it'd be wise to have backups.
 
Why are you having to update the bios ? is the CSM not just a setting you change, save and reboot ? ( ignoring that you may have to address a hard drive aspect )
 
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