http://www.tweaktown.com/popImg.php?..._4850erly2.jpg

According to GPU-Z, this can never be HD4870:

800mhz clock (GPU-Z displays 750)

memory clock should be 1800mhz (3600mhz effective, afaik, it's named GDDR5 and not GQDR5)

Bandwitdth is 57,6GB, so it is not GDDR5 for sure...

It's an HD4850 overclocked to 750mhz (maybe bios edited, )

This is, in fact, very good news, HD4870 can only be better than this, which is great.