Report: AMD's Tonga-XT GPU To Have 384-Bit Memory Bus

[spentshells]

I was referring to the 7870le like you were. Sorry if I was not clear.

The 285x does not use the same architecture as the 290. The tonga core is a full revision on it's own of the tahiti chips, thats what a lot of the review sites have been saying.

Here's how the Tom's Hardware review described the Tonga design:

Despite what its specifications may suggest, Tonga is not a spin on the Tahiti GPU in the Radeon R9 280 and 280X. Rather, it is a new and condensed version of the Hawaii GPU in the Radeon R9 290 and 290X. Among other things this means it has four times the number of asynchronous compute engines, that's eight instead of the Radeon R9 280/280X's two. According to AMD this can improve tessellation performance from two to four times, and facilitates effects that rely on GPU compute. In addition, the Radeon R9 285 inherits the 290 series' quad-shader layout, allowing four primitives to be rendered per clock cycle instead of two. Also note the CrossFire XDMA block, which provides the possibility of multi-card operation without a bridge connector.

Yeah they weren't right. Check some other sites .

Anand for example ... yes I know you should do this but...

To accomplish this AMD has minted a new GPU, Tonga. We’ll go into more detail on Tonga in a bit, but at its core Tonga is in many ways an optimized version of Tahiti. More importantly though, Tonga is also the first GPU in AMD’s next Graphics Core Next architecture revision,

A few other sites as well, I had a bunch of quotes as I had a different disagreement with someone I respect a lot less than you, but I cant find all my quotes. Just a thought, Im really looking forward to seeing what the 285x does, so I've been reading a lot of different sites. I just really hope it hits 780 levels of performance but I really doubt it.

 

[Sakkura]

Yeah they weren't right. Check some other sites .

Anand for example ... yes I know you should do this but...

To accomplish this AMD has minted a new GPU, Tonga. We’ll go into more detail on Tonga in a bit, but at its core Tonga is in many ways an optimized version of Tahiti. More importantly though, Tonga is also the first GPU in AMD’s next Graphics Core Next architecture revision,

A few other sites as well, I had a bunch of quotes as I had a different disagreement with someone I respect a lot less than you, but I cant find all my quotes. Just a thought, Im really looking forward to seeing what the 285x does, so I've been reading a lot of different sites. I just really hope it hits 780 levels of performance but I really doubt it.

Here's what else Anandtech says:

Meanwhile Tonga’s geometry frontend has received an upgrade similar to Hawaii’s, expanding the number of geometry units (and number of polygons per clock) from 2 to 4.

 

[junkeymonkey]

I think AMD will come through on that new memory for the -R- 300 cards .. it may be just on a select few top end cards to start for gunnie pigging at first then trickle down to the rest over time if proven to work as expected . but then there back down to there drivers and issues with that

 

[spentshells]

Yeah they weren't right. Check some other sites .

Anand for example ... yes I know you should do this but...

To accomplish this AMD has minted a new GPU, Tonga. We’ll go into more detail on Tonga in a bit, but at its core Tonga is in many ways an optimized version of Tahiti. More importantly though, Tonga is also the first GPU in AMD’s next Graphics Core Next architecture revision,

A few other sites as well, I had a bunch of quotes as I had a different disagreement with someone I respect a lot less than you, but I cant find all my quotes. Just a thought, Im really looking forward to seeing what the 285x does, so I've been reading a lot of different sites. I just really hope it hits 780 levels of performance but I really doubt it.

Here's what else Anandtech says:

Meanwhile Tonga’s geometry frontend has received an upgrade similar to Hawaii’s, expanding the number of geometry units (and number of polygons per clock) from 2 to 4.

The exact same shadder configurations and such same memory interface configuration (disabled on the 285), it really is still tahiti with whatever advancements they made through bonaire hawaii and beyond with color compression.

 

[Sakkura]

The exact same shadder configurations and such same memory interface configuration (disabled on the 285), it really is still tahiti with whatever advancements they made through bonaire hawaii and beyond with color compression.

The number of shaders is not really relevant. It's more like a Tahiti-sized Hawaii, since it has the architecture improvements that Hawaii also features (plus some extra tweaks).

I mean, the HD 7870 XT has more in common with the R7 250X/7770 than the HD 6970, even though it has 1536 shaders just as the 6970 does (and way more than the 640 shaders in the 250X/7770). The same thing goes for Tonga vs. Hawaii and Tahiti.