NVIDIA Kepler speculation thread

SimBy said:
I wonder what happens at a normal 4xAA and higher res. It might even be behind HD7970. At least in
a few games. Might even be further ahead who knows.
Click to expand...

Higher AA should favor the card with higher ROP and memory throughput theoretically. Higher resolution's usually good for architectures with massive fillrates, the memory size and architecture to support it and is not as dependant on a very efficient front-end, as triangle-sizes go up.
 
tviceman said:
17.18 x 18.55 comes out to 318 mm^2. So is that with the heat spreader on? The slide on that site still says it being 294 mm^2.
Click to expand...
There are 3 numbers possible:
This one: includes active die, includes scribe around active die, includes some amount of glue around the scribe
Die size as used to calculate dies per wafer: glue not included. ;)
Die size as used to calculate yield: scribe not included. This is usually the number used most internally.

Not unreasonable to go from ~300mm2 to ~320mm2 to go from one to the other.
 
CarstenS said:
Higher AA should favor the card with higher ROP and memory throughput theoretically.
Click to expand...
Actually, there is a difference between 4x and 8x MSAA. As AMD ROPs can't handle 8xMSAA at the speed NV ROPs are capable of, the ROP load basically doubles at 8x for AMD cards (but not for nV). The memory bandwidth plays a bigger role at 4x in case of AMD (because it is less limited by the ROP throughput itself), at 8x it doesn't help that much. So at 4x the bandwidth can have a potentially larger effect than at 8x (while in nV's case a higher bandwidth should pay off more at 8x).
 
tunafish said:
The big question is not why is it so good, it's why Tahiti sucks so much.
Click to expand...
Tahiti does not suck. Why do people always say that it sucks? I mean, ok, it could be cheaper, but that's really all that kept me from buying one in the last two months.
 
tunafish said:
The big question is not why is it so good, it's why Tahiti sucks so much.
Click to expand...

This is AMD's most compute-focused GPU yet. In order to compete with Nvidia in this regard, they had to take a hit somehow. Nvidia has been doing compute-focused architectures for 3 generations now, whereas Cayman was AMD's first, but not fully-focused, attempt. Nvidia has more experience in this regard.
 
Erinyes said:
On one of the slides they mention "8 Geometry Units". But I see only 4 GPC's?
Click to expand...
The Polymorph 2.0 Engines are the "Geometry Units". ;)

Gipsel said:
Actually, there is a difference between 4x and 8x MSAA. As AMD ROPs can't handle 8xMSAA at the speed NV ROPs are capable of, the ROP load basically doubles at 8x for AMD cards (but not for nV). The memory bandwidth plays a bigger role at 4x in case of AMD (because it is less limited by the ROP throughput itself), at 8x it doesn't help that much. So at 4x the bandwidth can have a potentially larger effect than at 8x (while in nV's case a higher bandwidth should pay off more at 8x).
Click to expand...
And all the game benchmarks given are a 8x AA. Can we infer 4xAA and noAA performance from that?
 
Gipsel said:
Actually, there is a difference between 4x and 8x MSAA. As AMD ROPs can't handle 8xMSAA at the speed NV ROPs are capable of, the ROP load basically doubles at 8x for AMD cards (but not for nV). The memory bandwidth plays a bigger role at 4x in case of AMD (because it is less limited by the ROP throughput itself), at 8x it doesn't help that much. So at 4x the bandwidth can have a potentially larger effect than at 8x (while in nV's case a higher bandwidth should pay off more at 8x).
Click to expand...

Actually, what I'm seeing is different. Comparing the latest High-End cards that both have 384 bit of memory interface and where Nvidia has the advantage of 50% more ROPs, AMD looses less performance when going from 4x MSAA to 8x MSAA.
 
can anyone capture the die shot without watermark :(

New Adaptive VSync technology


NVIDIA, on the other hand, made ​​for the actual operation of fluency of the game is optimized and to promote the new Adaptive VSync VSync setting are gamers, open the main purpose is to reduce the graphics card output image is generated in different fps too fast or too slow situations, and the output frame rate is locked in with the mainstream display screen 60fps. However, the image of the actual output of the graphics card will still be due to different scenes within the game for differences between the actual output fps lower than 60fps fps, will be directly reduced to 30 below 30fps is reduced to 20fps.


In fact, such cases are quite common, and convert 60fps to 30fps of the screen will significantly slow the beating, which greatly affect the fluency of the game, the new Adaptive VSync just solve the problem, when the Adaptive VSync enabled, the system automatically detection of the actual operation fps than 60 VSync will open a locked 60fps output frames, such as less than 60 will be automatically VSync turn off and running to the actual output frames to reduce all of a sudden dropped to 30fps from 60fps is the emergence of slow beat, can be very useful.


Practical function open: new antialiasing technology TXAA


In addition to the graphics performance, NVIDIA also for the needs of gamers, add a number of new and useful features for a new generation of the GeForce GTX 680, released a new anti-aliasing technology TXAA, a new generation of hardware rendering anti-aliasing technology, actually belongs to the old MSAA's enhanced version provides better anti-aliasing I can reduce the open antialiasing fluency decline, for the time being belonging to the GeForce GTX 680 unique anti-aliasing, but NVIDIA said that the above will be open at a later time to the GeForce GTX 500 or Model.


TXAA temporarily can be divided into two levels: TXAA 1 and TXAA, the former costs only 2x the MSAA similar, but the MSAA is better than the 8x anti-aliasing; As for TXAA 2 effect is more outstanding, but the cost only similar with 4x MSAA. TXAA game itself support to be open to use, support TXAA variety of games will be held during the year stage, although present, failed to test its real performance, but based on the NVIDIA official photos can be seen, antialiasing does, it is worth looking forward to.


In addition to the new TXAA Antialiasing, NVIDIA is also an existing graphics card users to bring good news, the introduction of the original few games before the corresponding FXAA to the NVIDIA Control Panel, users can easily turn the feature on. lead to better anti-aliasing for different games, and enhance the quality of the game screen.
Click to expand...

ok i found it

b07a5779c5dc22309f18879zrh.jpg
 
Last edited by a moderator:
Last edited by a moderator:
Cleaned for thou geekish pleasure :p :

aatVwSN2.jpg


The command processor in the middle is strangely smeared. Looks like NV doesn't want anyone to peek in the gigathread factory. :D
 
You must log in or register to reply here.

Similar threads

A
RDNA3 Efficiency [Spinoff from RDNA4]
3 4 5
Replies
85
Views
10K
Bondrewd
Bondrewd
iroboto
CES 2025 Thread (AMD, Intel, Nvidia, and others!)
9 10 11
Replies
209
Views
11K
DavidGraham
D
D
The Silent Hand of Driver "Optimization" (spinoff)
2
Replies
31
Views
3K
DavidGraham
D
F
AMD RDNA5 Architecture Speculation
2
Replies
38
Views
7K
Seanspeed
S
Shortbread
Nvidia is Now The Second-Largest Company in The US Market
Replies
4
Views
3K
MfA
M
Back
Top