[fpsflow]

Necro bump because I'm really curious about how the GRE would perform with this this procedure:

https://www.overclock.net/posts/29459382/

It's a full die and has weirdly low current limits, it could benefit a lot from extra current. Could be a sleeper card with this method.

 

[fpsflow]

GPU or VRAM clock? Is the limit at driver or bios level?
Have a look at 7900XT current limits

For Core/SoC/USR, at least they're in hwinfo list. Now look at 7900GRE:

That's quite the difference. There's also two other rails that don't have limits mentioned in hwinfo, Vmem and Vddci but last one doesn't matter that much. You can now offset the current for all these rails.
I was able to get my (7800XT) VRAM to 2850MHz, benchmarked at that speed, and seemed to pass memtest_vulkan 5 minutes test at 2800MHz, though I'd back off a bit, 2750MHz or so. LLMs were fine in a short test I made.
If software allows setting 2800MHz then it will probably work at that speed provided you offset the current to help with that.

 

[fpsflow]

But Vcore has exactly 50% less current limit vs 7900XT. That has to play into it barely reaching 2800MHz. I doubt it has some kind of weird BIOS clock limit.
Curious how LACT interface looks on Linux, for 7900GRE, does it allow setting clock higher than 2800MHz? Like 3300MHz for example?
The low clocks could simply be enforced with a low current limit, or VI curve. I'd certainly try the current gain mod if I had one.

 

[fpsflow]

Yeah they don't seem to clock higher, but also no mention of EVC2SE on any of them.
Could be a stupid idea but anyone tried XT BIOS on GRE?

 

[fpsflow]

Thing is, there'd be zero reasons to add any kind of current limit if it were possible to limit based on clock speed. We'd all get that limit, 2800-3000MHz hard stop that's that. No TDP/TDC limits, just clock and temp.
LACT interface shows current limit that's being applied, in real time. TDP/TEMP/TDC. On hard Vulkan benchmarks I see TDC pop up on higher TDP peaks. So that's a clear enforced current limit.
Curious what people see with GRE in such scenario. Does TDC limit pop up?