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Search: Posts Made By: DavidGraham
Forum: 3D Architectures & Chips 17-May-2013, 00:22
Replies: 6,477
Views: 912,884
Posted By DavidGraham
But you still have to wonder. How the heck did...

But you still have to wonder. How the heck did they manage to consume so large amounts of memory ? That's a whole small game , or half a big one!

And that was with no MSAA , for god's sake that's...
Forum: 3D Architectures & Chips 16-May-2013, 17:08
Replies: 6,477
Views: 912,884
Posted By DavidGraham
I specifically got a 3GB 660Ti for that reason ,...

I specifically got a 3GB 660Ti for that reason , but still , I am afraid it wouldn't be enough !! :(

Killzone's PS4 demo consumed 3.0GB of PS4 memory!! just for graphics , it consumed another 1.5...
Forum: 3D Architectures & Chips 14-May-2013, 03:35
Replies: 41
Views: 1,949
Posted By DavidGraham
Speaking of which , I assume Kepler still retains...

Speaking of which , I assume Kepler still retains the Superscalar arrangement of GF104 or did they defaulted back to a mere scalar arrangement like GF100?
Forum: 3D Architectures & Chips 13-May-2013, 22:59
Replies: 41
Views: 1,949
Posted By DavidGraham
With all due respect Mr.Dave , The way I see it...

With all due respect Mr.Dave , The way I see it .. Corporate folks will always try to tout the strengths of their products and downplays the weaknesses , I didn't hear you say the same thing when...
Forum: 3D Architectures & Chips 13-May-2013, 20:47
Replies: 41
Views: 1,949
Posted By DavidGraham
Like what else for example? Triangle Throughput ?...

Like what else for example? Triangle Throughput ? they are both tied in most metrics .. Pixel/Texel Fill rates .. etc , and Tahiti has much larger memory bandwidth .
Forum: 3D Architectures & Chips 13-May-2013, 20:01
Replies: 41
Views: 1,949
Posted By DavidGraham
Excellent , so it seems AMD has at least a slight...

Excellent , so it seems AMD has at least a slight edge in scheduling , If not more , but that doesn't explain to me how a 1536-core Kepler GPU matches a 2048-core Tahiti GPU in performance.(or comes...
Forum: 3D Architectures & Chips 13-May-2013, 14:49
Replies: 41
Views: 1,949
Posted By DavidGraham
Seriously , no answer ? is the question stupid or...

Seriously , no answer ? is the question stupid or something ?
Forum: 3D Architectures & Chips 12-May-2013, 21:56
Replies: 41
Views: 1,949
Posted By DavidGraham
Kepler and Tahiti Scheduling

Correct me If I am wrong , But it seems that both Kepler (GK110/GK104) and Tahiti use a combination of hardware and software scheduling to get the job done , but who really uses hardware side more...
Forum: 3D Beginner's Questions 11-May-2013, 04:16
Replies: 14
Views: 499
Posted By DavidGraham
Much appreciated , I got more than the general...

Much appreciated , I got more than the general idea .. thanks :smile:.
Forum: 3D Beginner's Questions 11-May-2013, 00:12
Replies: 14
Views: 499
Posted By DavidGraham
Are those directly related to their capability to...

Are those directly related to their capability to transmit two data pulses per clock ?

If I wasn't making myself clear enough , let me rephrase the question , What makes DDR controllers so ...
Forum: 3D Beginner's Questions 10-May-2013, 23:17
Replies: 14
Views: 499
Posted By DavidGraham
After tedious search , it seems there is indeed a...

After tedious search , it seems there is indeed a PLL .. used in -at least- writing operations . For other things ,there is also something called a DLL , which is supposed to be similar to PLL .. I...
Forum: 3D Beginner's Questions 10-May-2013, 17:00
Replies: 14
Views: 499
Posted By DavidGraham
Yeah , everybody knows that , the devil is in the...

Yeah , everybody knows that , the devil is in the details though .. current PCs are synchronous systems , they always need the clock signal to maintain operation , that is why a proposed PLL could be...
Forum: 3D Beginner's Questions 10-May-2013, 16:22
Replies: 14
Views: 499
Posted By DavidGraham
If you would allow me to ask, I have another...

If you would allow me to ask, I have another question .. How engineers managed to force bus to transfer data two times per clock cycle .. did they use a sort of PLL dedicated for the bus (like a...
Forum: 3D Beginner's Questions 09-May-2013, 00:07
Replies: 14
Views: 499
Posted By DavidGraham
Thanks a lot ..

Thanks a lot ..
Forum: 3D Beginner's Questions 08-May-2013, 23:53
Replies: 14
Views: 499
Posted By DavidGraham
The numbers are just examples , for all I care...

The numbers are just examples , for all I care they could be 3000 MHz and 4000 MHz respectively :)

The 192-bit bus is DDR , so while data is being transferred at 400 MHz , Address and clock...
Forum: Hardware & Software Talk 08-May-2013, 19:57
Replies: 7
Views: 353
Posted By DavidGraham
Thanks a lot RussS...

Thanks a lot RussS (http://forum.beyond3d.com/member.php?u=28730) , so they do have slightly reduced addressing capability.
Forum: 3D Beginner's Questions 08-May-2013, 19:54
Replies: 14
Views: 499
Posted By DavidGraham
Clock Fequency or Bus Width ?

A theoretical question , which is better:

1-A 256-bit bus running @300 MHz Single Data Rate , or
2-A 192-bit bus running @400 MHz Double Data Rate

Both gives a bandwidth of 9600 Mbytes , is...
Forum: 3D Architectures & Chips 08-May-2013, 08:51
Replies: 33
Views: 2,318
Posted By DavidGraham
You are saying you can have a vector code on the...

You are saying you can have a vector code on the HT thread and an Integer code on the main thread at the same time ? I thought a single thread can have both Vector and Integer codes simultaneously...
Forum: Hardware & Software Talk 08-May-2013, 04:53
Replies: 7
Views: 353
Posted By DavidGraham
Well then , Why do SSDs have to rewrite a whole...

Well then , Why do SSDs have to rewrite a whole block (512KB) just to change a page (4KB) or two ? is it just for the sake of drive lifetime consideration? , or Do they have lower access to each page...
Forum: Hardware & Software Talk 08-May-2013, 04:25
Replies: 7
Views: 353
Posted By DavidGraham
SSDs and bit access ..

Do SSDs have reduced access to their memory infrastructure? Compared to HDDs or RAMs for example? I am asking this because of their bizarre rewriting methods , Do they have less addressing...
Forum: 3D Architectures & Chips 08-May-2013, 03:24
Replies: 33
Views: 2,318
Posted By DavidGraham
What is so special about HT ? my simple...

What is so special about HT ? my simple understanding is that it's just a mere doubling of the Control Unit , it COULD help with data stalls on the main thread ,but it has nothing to do with...
Forum: 3D Architectures & Chips 24-Apr-2013, 20:38
Replies: 4,689
Views: 739,584
Posted By DavidGraham
But GCN has them even in Single cards...

But GCN has them even in Single cards configurations , it is not just multi-GPU related only!
Forum: 3D Architectures & Chips 24-Apr-2013, 16:14
Replies: 4,689
Views: 739,584
Posted By DavidGraham
Do we even know the reason for these insane...

Do we even know the reason for these insane micro-stuttering graphs?(never seen anything like them!) Why AMD suffers this with the GCN architecture in particular ?
Forum: 3D Architectures & Chips 04-Apr-2013, 08:07
Replies: 4,689
Views: 739,584
Posted By DavidGraham
They were short on optimizations ? ...

They were short on optimizations ?

http://www.shacknews.com/article/78554/ps4-isnt-quite-as-powerful-as-epic-was-hoping-for

...
Forum: 3D Architectures & Chips 01-Apr-2013, 14:19
Replies: 4,689
Views: 739,584
Posted By DavidGraham
Starcraft 2 generally has worse performance on...

Starcraft 2 generally has worse performance on AMD hardware than NVIDIA .. it has been like this since it's launch in 2010 .
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