I tested my card all evening tonight. Bought the card 1 1/2 years ago, so if it had bad TIM like in the article it would have shown by now. The card in question is a Gainward Phoenix RTX 4070Ti. Results are:
Core: average 62°C, maximum 70.9°C
VRAM: average 66.1°C, maximum 74°C
Hotspot: average 70.4°C, maximum 81.6°C
I would say that is well within expectations and far from critical. So either they changed TIM since I bought it, Gainward is fine, or, as you said, it's just a certain batch gone bad. It definitely doesn't seem to affect all cards out in the wild.
Agreed.
Just played Ratchet and Clank maxed out (incl. Ray Tracing @4K (a very poorly optimized game);
GPU Temp: Max: 67.6 | Avg: 64.4
Memory Junc: Max; 80.0 | Avg: 75.4
Hotspot: Max: 77.3 | Avg: 72.4
I know the deltas are really close but my room is warm (it is summer) and as mentioned pushing the GPU to the limit.
Lower demanding games from previous monitoring,
I only game on this PC and never leave it idle for more than a few mins (still don't trust the 12VHPWR connector unattended) during a 8h 52min session (must have really liked):
GPU Temp: Max: 68.4 | Avg: 61.8
Memory Junc: Max; 82.0 | Avg: 72.8
Hotspot: Max: 79.1 | Avg: 70.4
Lastly going back over a year, Feb 2023 (4h 49min session):
GPU Temp: Max: 69.9 | Avg: 65.4
Memory Junc: Max; 80.0 | Avg: 75.8
Hotspot: Max: 79.6 | Avg: 73.9
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So in summary I agree with
@KyaraM that it's batches or other unknowns. Monitor your temps and look for irregularities.
I've had my card since launch (+/- few weeks) and as far as I'm concerned, especially being a 4090, the temps are acceptable, well within spec and consistent in temps and deltas.
Edit: Forgot to mention I crossflashed the higher power limit BIOS and am also overclocked a tiny bit.