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[VC] AMD Radeon R9 290X with Hawaii GPU pictured, has 512-bit 4GB Memory - Page 20

post #191 of 1055
Thread Starter 
I still haven't gotten an answer for this after many threads so I'll ask once again.

Hawaii is likely to have:

-25% more SPs (37.5% more being an extremely unlikely and remote possibility)
-50% more ROPs

Than Tahiti. Neither design will be memory bandwidth bottlenecked.

In order to beat a Titan Hawaii would have to improve clock for clock perf over the 7970 by over 40%.

And on top of that it would have to clock higher than the Titan when even the smaller Tahiti can't do that.

How do these things equal a Titan killer? Where exactly is the sense behind the assumption?
 
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post #192 of 1055
Its simple. If Pixel fillrate will be more than 40gp/s and Texel fillrate more than 187 gt/s while total computational power more than 4500 gflops it will beat the Titan.

If it has 512bit bus, it quite easy to expect how will the values on current Tahiti chips change... But I dont have any exact data provided by AMD...
post #193 of 1055
Quote:
Originally Posted by Alatar View Post

I still haven't gotten an answer for this after many threads so I'll ask once again.

Hawaii is likely to have:

-25% more SPs (37.5% more being an extremely unlikely and remote possibility)
-50% more ROPs

Than Tahiti. Neither design will be memory bandwidth bottlenecked.

In order to beat a Titan Hawaii would have to improve clock for clock perf over the 7970 by over 40%.

And on top of that it would have to clock higher than the Titan when even the smaller Tahiti can't do that.

How do these things equal a Titan killer? Where exactly is the sense behind the assumption?

GCN 2.0.

Performance per clock needs to increase ~37-38%.
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post #194 of 1055
Quote:
Originally Posted by Alatar View Post

I still haven't gotten an answer for this after many threads so I'll ask once again.

Hawaii is likely to have:

-25% more SPs (37.5% more being an extremely unlikely and remote possibility)
-50% more ROPs

Than Tahiti. Neither design will be memory bandwidth bottlenecked.

In order to beat a Titan Hawaii would have to improve clock for clock perf over the 7970 by over 40%.

And on top of that it would have to clock higher than the Titan when even the smaller Tahiti can't do that.

How do these things equal a Titan killer? Where exactly is the sense behind the assumption?

Do those things equal a 780 killer? This is a serious post from me for once lol

(still can't believe the Nope! Alatar meme got pulled though... it was OCN gold I swear!)
post #195 of 1055
post #196 of 1055
Quote:
Originally Posted by Majin SSJ Eric View Post

That test was done on stock bios and with throttling etc. Obviously Titans are much faster now than they were when I did that test (though the 7970's have picked up some performance from driver optimizations as well)...

EDIT - In fact, that gives me an idea. It may be fun to revisit all of those tests today using unlocked voltage, bios, etc just to see how much faster my Titans are now than they were back then...

A 1300mhz GTX Titan against a R7970 also pushing 1.3-1.35v would be interesting.
    
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post #197 of 1055
Thread Starter 
Quote:
Originally Posted by Usario View Post

GCN 2.0.

Has not been proven to do anything more than get better perf/watt.
Quote:
Performance per clock needs to increase ~37-38%.

That's where you want to aim if you want to exceed a 780 clock for clock. For Titan that isn't enough. And obviously matching X clock for clock would mean that Hawaii could only match it at the same clocks. Titans go above 1300MHz easily, 780s even more easily and 780 classys will go over 1400mhz relatively easy.

Besides I still don't get how you get that big of an increase from a mere 25% more SPs and 50% of ROPs...
 
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post #198 of 1055
Quote:
Originally Posted by Offler View Post

Interesting:
http://www.techpowerup.com/gpudb/2460/radeon-r9-290x.html

4.5GHz GDDR5 is highly unlikely. That would mean literally no bandwidth increase over the 7970 GHz Edition. And, seriously, 6GHz ICs are everywhere these days, and cards like the 770 are even using 7GHz stock ICs.

TPU's database of upcoming GPUs has never really been anything more than a mish-mash of prevalent rumors anyway.
Quote:
Originally Posted by Alatar View Post

Has not been proven to do anything more than get better perf/watt.

AFAIK it hasn't been proven to be anything at all as of yet.
Quote:
That's where you want to aim if you want to exceed a 780 clock for clock. For Titan that isn't enough. And obviously matching X clock for clock would mean that Hawaii could only match it at the same clocks. Titans go above 1300MHz easily, 780s even more easily and 780 classys will go over 1400mhz relatively easy.

wat

Anandtech's 992MHz Titan is 34% faster than their 1050MHz 7970GE... that's 36% faster clock for clock.

According to HWBot the average Titan does +232 core and the average 780 does +282 core. I'm not very familiar with Kepler Boost but I'm fairly sure that 1068MHz or even 1145MHz nominal doesn't normally equal 1300MHz boost.
Edited by Usario - 9/21/13 at 4:48pm
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post #199 of 1055
Quote:
Originally Posted by Usario View Post

4.5GHz GDDR5 is highly unlikely. That would mean literally no bandwidth increase over the 7970 GHz Edition. And, seriously, 6GHz ICs are everywhere these days, and cards like the 770 are even using 7GHz stock ICs.

TPU's database of upcoming GPUs has never really been anything more than a mish-mash of prevalent rumors anyway.

Number of transistors, ROPs and TMUs seems to have some logic. LIke 48 ROPs instead of 32... 160 TMUs instead of 128...

Only the frequencies seems to be bit lower as I expected. Mainly on memory of course, but to have good performance gain over Titan it should run on 1000Mhz at least.
post #200 of 1055
If it somehow beat the Titan we'd be paying at least $900 for it, and that is not an event I wish to see.
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Overclock.net › Forums › Industry News › Hardware News › [VC] AMD Radeon R9 290X with Hawaii GPU pictured, has 512-bit 4GB Memory