i think op was trying to refer to the 8750M and not the 8570M, because there is no relevance of that comparison, 8570M is a lot beneath that line up, the only meaningful comparison is with 8750M which is a bit 4-5% slower than the GT740M in 3D/D11 synthetics but shows better frame rates in some games ( may be because of the 128 bit bus ).
cilus notebookcheck also says there is a 128 bit version of gt740m, any idea why it has not made it to any of the products till now? i could only see laptop makers providing 64bit one..
NO I was talking about HD 8570 only.because that is the latest GPU available among below 50K Lenovo,Sony,HP Laptops.
And I was referring GT740M as 128 bit because that is what i found while comparing with other GPUs. In the laptop selling sites it is not mentioned. and I dont think beneath the line always means lower grade. the last two digit matters.
And hearing from all you guys, i guess I will go for 2GB GT 740m ..only available with Lenovo z500(59-380463) with 6GB DDR3 ram and i5-3230m.