Hello :-)
Here are the results for this chip. Tested with Arduino (serprog).
Probing: OK Reading: OK Erasing: OK Writing: OK
The writing (sign) on the Chip is: Pm25LV512 AE1034 M23360LG
Should i test something else?
BTW: This chip was found on a "newer" nvidia graphic card (GF108 / Gforce GT430 / 1GB Ram).