Asus has published a small tool that makes it possible to patch a GeForce GTX 465 into a GeForce GTX 470. How is it possible ? Just by enabling three SMs (streaming multiprocessor). Because first versions of GTX 465 GPUs are GTX 470 GPUs with three SMs in less. A GTX 465 has 352 cores (11 SMs) and an unlocked GTX 465 has 448 cores or 14 SMs.
You can download this GTX465 Unlocker HERE.