Will the PS4 represent 50% better performance than the X1

[Captain_Tom]

HoloDust said:

Captain_Tom said:

The difference is that of comparing a 7770 with 1GB to a 7870 with 2GB.  Essentially double the power.  After a year expect PS4 games to run at higher framerates with higher resolution textures.  It will be very noticeable. 

No, not double. If you look at vanilla GPU specs of PS4, it is slightly above 7850, and XOne is close to 7770. However, XOne GPU appears to be cut down 7790, so it does have some things better than 7770, plus MOVE engines and eSRAM to make up for lower bandwidth, effectively making it faster than 7770. Of course, PS4's GPU also has its own enhacements, so difference in performance will probaly remain the same as vanilla 7850 to 7770...which is around 50%.

1) The ESRAM is to make up for the 60% slower RAM.  Even then it is still not as fast (Theoretically) as GDDR5.  Slightly more cores, much worse RAM, and 20% slower clock (800MHz vs 1000MHz) = 7770 at best, but probably closer to a 7750.

2) The GPU in the PS4 IS stronger than a vannilla 7850 with those enhancements as well.  It should easily catch up to a 7870.

3) A 7850 is already over twice as stong as a 7750, and 50% stonger than the 7770.  Then the 7870 is about twice as strong as a 7770 as seen here:

http://www.techspot.com/review/661-nvidia-geforce-gtx-650-ti-boost-sli/page2.html

 

Anyone with a solid understanding of AMD's current GPU archetecture will tell you the same as I have (And I am an Engineer so this is kind of MY JOB).  But if you don't believe me, maybe some actual developers will convince you:

http://www.gamechup.com/jonathon-blow-some-games-could-be-60fps-on-ps4-and-30fps-on-xbox-one/