Originally Posted by BBEG
I don't understand why people are speculating the 280X to be slower
than the 770. The 770 is slightly faster than the 680 it replaced, and I expect no less of the 280X relative to the 7970. Am I missing something?
reference R9-280X is rumored to be 5+1 phase VRM, with 1GHz core clock that boosts to 1050Mhz, 1500Mhz memory clock = 6Ghz effective memory clock
original R9-280X rumors were 850GHz core clock... Videocardz still has this as base clock.
non reference R9-280X is supposed to be 1070 or 1100 MHz boosted
core and 1600Mhz memory clock ; if they're voltage locked we can expect these to be the core limits even if CCC limit is 1500MHz core . If Techpowerup's TDP limit is right (unlikely since the card is not out), the R9-280X is supposed to have 200W TDP , which is much lower than the 300W HD7970GE (HD7970 was 250W TDP) however.
HD7970GE is 1Ghz core clock, 1500MHz memory clock
Both HD7970GE and R9-280X come with 2048 shaders (Tahiti XT), 3GB memory on 384-bit bus.
It's unlikely to be faster stock
than the GTX 770 because the GTX 770 has a ~+40Mhz faster core (1046 MHz , 1085 Mhz Boost ... some aftermarket boost to 1250Mhz) and ~+250MHz memory clock (1753 MHz ... ~224GB/s bandwidth) than GTX 680 (1006 MHz , 1058 MHz Boost with 1502 MHz memory clock)
http://wccftech.com/amd-radeon-r9-280x-radeon-r7-260x-radeon-r7-240-specifications-confirmed-october-8th-launch/Edited by AlphaC - 10/2/13 at 2:11pm