GoKawiilFake RTX 4090 with counterfeit GPU die sold as repair project for $350
A Russian repair specialist known as VIK-off examined an RTX 4090 bought as a bare PCB for about 30,000 rubles ($350) and discovered it contained a fake GPU die soldered on via BGA along with counterfeit memory chips mimicking GDDR6X markings. Closer inspection revealed the die's contact area didn't match a real processor and the solder mask degraded during cleaning, while the memory chips were actually GDDR6 rather than GDDR6X, with VIK-off suggesting the board may actually be a repurposed RTX 3090 Ti PCB.
GoKawiil's interpretation of the reporting above, not reported fact.
The case shows counterfeiters are investing significant effort into replicating fine details like chip labeling, compound texture, and even BGA soldering, making fakes harder to catch than before. Buyers purchasing bare PCBs or 'repair project' GPUs without coolers face particular risk since functionality can't be verified before purchase, suggesting secondhand GPU markets may need more rigorous authentication methods.
- A fake RTX 4090 with a counterfeit GPU die and memory chips was sold as a repair project for about $350.
- The die was soldered via BGA to mimic genuine manufacturing, with memory chips bearing fake Micron-style GDDR6X markings that were actually GDDR6.
- The PCB may have originated from an RTX 3090 Ti, according to the repair specialist, though this remains unconfirmed.
NVIDIA GeForce RTX 4090 Founders Edition — Avoid the risks of buying bare, cooler-less GPU boards from sketchy sellers by purchasing a sealed, authentic RTX 4090 from a reputable retailer. This ensures you get genuine components, full warranty coverage, and peace of mind instead of risking a counterfeit die and swapped memory chips.
See NVIDIA GeForce RTX 4090 Founders Edition on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: tomshardware.com — Kunal Khullar, 2026-10-12
Published there as: “Buyer pays $350 for broken RTX 4090 project only to find realistic fake GPU die and swapped memory — Russian repair specialist reveals sophisticated new cam using dummy PCBs”
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