AMD Ontario APU pictured,die size ~77mm^2

[Chumbucket843]

huh??? so you expect how many sp ????

a SIMD in ATi's architecture is a 16 wide vector with 5 VLIW units each. 16*5=80

there are 4 SIMDs in rv670/r600, 10 for rv770, and 20 for cypress.

my area estimate for a single SIMD core including tmu's is ~16mm2 and the area of the gpu core in bobcat is ~30mm2. 160sp or 80sp is what i would be guessing, preferably 160.

it will be interesting to see if they go for 80sp but go for 8 tmu's and 4 rops. i think that will be more likely.

[cal_guy]

a SIMD in ATi's architecture is a 16 wide vector with 5 VLIW units each. 16*5=80

there are 4 SIMDs in rv670/r600, 10 for rv770, and 20 for cypress.

my area estimate for a single SIMD core including tmu's is ~16mm2 and the area of the gpu core in bobcat is ~30mm2. 160sp or 80sp is what i would be guessing, preferably 160.

it will be interesting to see if they go for 80sp but go for 8 tmu's and 4 rops. i think that will be more likely.

ATI also supports 8 way SIMD. RV610, RV620, RV630, RV635, RV710, RV730, and Cedar are all examples of ATI gpu in 8 way format. Also all current AMD IGP are 40 SP versions.

[Kej]

a SIMD in ATi's architecture is a 16 wide vector with 5 VLIW units each. 16*5=80

there are 4 SIMDs in rv670/r600, 10 for rv770, and 20 for cypress.

my area estimate for a single SIMD core including tmu's is ~16mm2 and the area of the gpu core in bobcat is ~30mm2. 160sp or 80sp is what i would be guessing, preferably 160.

it will be interesting to see if they go for 80sp but go for 8 tmu's and 4 rops. i think that will be more likely.

16 SPU's is not a fixed value for ATI's SIMD engine, they can make it 8
or 32 if they so like.

With todays architecture ATI have a quad TMU with each SIMD engine.
If you look at shader vs TMU ratio you can see that many low end
Radeon's are 8 wide, 40SP's, for example.