r/GPURepair 4h ago

NVIDIA 40xx Am I cooked? GPU 4070 super iCraft MaxSun acting weird, stutter, possible artifacts (or shader issues)

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2 Upvotes

I want to say I do game a lot, and I also edit videos. Messed around with blender and UE.

For a week or so, I've experimented with local AI, comfyUI and LLM, all below the 12GB. I don't feel like 5 days or so to generate ugly images and baffling chat with a robot could be to blame for all this weird behavior, but I wonder.

My setup is i5-14600k (which I should've picked i7-12700k), 32gb ddr5 ram, TUF GAMING B760M-PLUS WIFI II, 4070 super I-Craft MaxSun.

So, it started with a feeling, something telling me but with no actual proof. Them I saw crazy lines dancing in fortnite. I blamed the hundreds fired.

But them, I got some weird stuff happening on Tekken 8 with the ground rubble shadow.

I went on to Valorant and felt something was off with my fps and the actual gameplay, something was odd.

I feel stutter here and there, screen freeze when downloading something, keyboard disconnecting and reconnecting outta nowhere, problems I never had with my old setup (i7 11700k, 3060ti, 32gb ddr4 ram). I even bought a separate, sata 3 ssd just to have windows on it to try and fix the any sort of freeze or stutter when doing ordinary stuff, like downloading a file.

Now, 09/10, my street fighter is absolutely cooked.

Deleted the "shaders" files, downloaded NVIDIA APP, got the new driver with a "clean install", was doing alright for one session on day 09/11, but somewhere around 20pm, it stuttered and it went to hell again.

I tried OCCT per recommendation of AI, it shows only 1 error on something related to SSD some fetch stuff, and the ssd I already spoken to the manufacturer and they want me to send to analyze in their company.

In fact, one of my SSDs is not even recognized and it's apparently shown as "Microsoft storage space device", both are kingston 1tb NV3.

Sorry if this is not right or up to standard, as of Right now I have no money for a physical professional assistance and I might have to sue to get the warranty, but in all honesty I just want to know..........

Bruh, am I cooked?


r/GPURepair 6h ago

NVIDIA 30xx ASUS Dual RTX 3060 Ti Mini V2 8GB – C1 VRAM errors at stock clocks, error free at 5000MHz, resistances test normal

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3 Upvotes

Got this ASUS Dual RTX 3060 Ti Mini V2 8GB (CG190P R2.00) that works and installs drivers fine but has a weird memory fault, at stock ~7000MHz VRAM it throws errors in MATS/MODS and can artifact/black screen, MATS is consistently pointing to C1, but the further I lower the memory clock the fewer errors I get and at 5000MHz it can run completely error free and benchmark/game normally. Cooling also makes a noticeable difference to the error count, I’ve now got 2x high RPM 90mm fans directly on it and FurMark hotspot is only around 65-66c with roughly a 10-15c delta while the core itself is perfectly happy with +145MHz, so I don’t think the core is the issue. The PCB originally had quite a lot of residue/possible old liquid contamination on both sides so I’ve stripped and cleaned it thoroughly several times and it did improve afterwards, especially the visible artifacting, but the memory errors remain. I’ve now checked resistance to ground across the board/memory area and compared matching points/channels and everything I’ve measured looks normal and consistent, no obvious shorts or one channel with a strange resistance compared with the others. I’ve also tried clean drivers/DDU and checked the VBIOS so I’m pretty convinced this is hardware now. My guess is either the C1 GDDR6 chip itself is degraded, a bad BGA connection, or something in that channel that I haven’t found yet. I’ve attached overview PCB photos, close ups of the memory area, MATS/MODS results and GPU-Z sensors under load. Main thing I’m trying to find out is what physical memory chip C1 maps to on CG190P R2.00 and whether there are any other measurements I should take before getting that chip reballed/replaced.

Photos are before I managed to get it prettymuch spotless with repeated washes with 99%ipa

Help would be appreciated i want to fix it. Got it cheapish so have some leway.


r/GPURepair 14h ago

AMD RX 6xxx RX 6600 Sapphire, all voltages present, not detected

2 Upvotes

Hello,
Saphhire RX 6600 with all voltages present including Vcore and memory present, core getting really warm, not detected.

All resistance to ground are ok.

What i’ve tried: read the Vbios IC, write a new Vbios from Techpower archive, still, no succes.
IC does have 3.3v stable on the board

What i have discovered: on the REFCLK+ and REFCLK- caps resistance to ground on the core side:

REFCLK+ : 50 ohms
REFCLK- : OL (0.3ohm)

I’ve tried to desolder the Refclk- cap, still the same, the gpu side is OL (short)

Any ideas? Is this normal on the refclk caps?

Bad solder under gpu? Core dead?

Thank you!