GeForce FX at 64 GB/s Bandwidth???!!

[DemoCoder]

WaltC, it's getting old now.

 

[tamattack]

WaltC, it's getting old now.

Doesn't make it any less true. If anything, it seems to be getting worse (IMO of course.)

 

[tamattack]

Back on topic, I just noticed this over at Rage3D:

"As far as NVIDIA’s bandwidth claims of GeForce FX’s 48GB/sec memory bandwidth, ATI states that the color compression in their HYPERZ III technology performs the same thing today, and with all of the techniques they use in RADEON 9700, they could claim bandwidth of nearly 100GB/sec, but if they did so no one would believe them, hence they’ve stood with offering just shy of 20GB/sec of bandwidth."

More fuel for the fire...

 

[Sage]

WRONTE: nVidia is claiming an effective 48Gb/s bandwidth and everyone has been assuming that its because of their 4:1 colour compression. remember much about Mojo? It was going to be based on gigapixel's defferred renderer. with the ability to cull TO (not with) a depth complexity of one then:

uncullable info (shader progs, geometry, etc) = UI
bandwidth = 16
avg depth complexity = 4
ineffeciency = %20 (?)

((16 - (.2 * 16)) * 4) - UI = effective bandwidth
(16 - 3.2) * 4 = effective bandwidth
12.8 * 4 = effective bandwidth
51.2 - UI = effective bandwidth
48 = estimated effective bandwidth