J2900 vs G2030

[zergRush]

I would like to ask a question: how does intel pentium j2900 compare to g2030? Is it more powerful or at least close to performance of g2030? And also, will pcie 3.0 x4 bottleneck a gtx650/750? All answers much appreciated. English is not my native if there are any mistakes, sorry for that.

 

[breakfastdude]

The Ivy Bridge-based G2030 is a lot more powerful, and the performance is not even close. The J2900 is based on the Silvermont architecture, an architecture aimed at energy efficiency. From what I read, Silvermont is half as powerful per clock cycle to a Core 2 Duo-based processor (a ~7-year old architecture). So yeah, the difference is quite huge, even if you take into account the advantage J2900 has in terms of core count. In this case, the TDP values don't lie: 55W vs. 10W. Also, if I'm not mistaken, the J2900 doesn't support 64-bit OS'es, if that's important to you.

Regarding the pcie 3.0 x4, there might be a bottleneck for gaming, but not much. People using diy egpu's (external GPUs) for their laptops make do with pcie 2.0 x2, and they get around 70-80% of the performance of a full pcie 3.0 x16 lane. Head over to the DIY eGPU forum in forum.techinferno.com if you wanna see more numbers: http://forum.techinferno.com/diy-e-gpu-projects/

 

[zergRush]

Thank you so much! I have to give up my hopes for the J2900. I knew it all along that it just would be too good for it to outperform a cpu which has 5.5x more TDP. Such a shame. Anyway, thank you for your answer