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Revs
03-19-10, 11:26 AM
I make it just under 178Gbps if those clocks are correct. Which is nice.

Toss3
03-19-10, 11:29 AM
It's cool,it's just that Nvidia don't use the base clock of the memory in the description,but the middle clock(makes for a bigger number on the box) and people are then multipliying that by 4,rather than 2,which is what it should be when doing the bandwith calculations.


Only the base clock has to be multiplied by 4,so they're using GDDR 5 with a roughly 925Mhz base clock for the GTX480 and 837Mhz for the GTX470 cards....They still have more memory bandwith than the HD5850 and HD5870 cards due to the 320 and 384 bit busses anyhow.


Under the article calculations,you'd actually beat an HD5970 card by quite a lot,and that one is using a pair of GPU's,with each one having it's own 256 bit memory bus(512 bit in total)....

Think you are right:

384/8*4*925=177,6GB/s

vs

256/8*4*1200=153,6GB/s

177,6Gb/s sounds much more realistic than 355GB/s, but who knows? :bleh:

Enrico_be
03-19-10, 11:34 AM
177,6Gb/s sounds much more realistic than 355GB/s, but who knows? :bleh:

Ha, indeed, "Who knows" :p

Hehe, I will choose my words carefully next time I post :D

shadow001
03-19-10, 11:41 AM
Think you are right:

384/8*4*925=177,6GB/s

vs

256/8*4*1200=153,6GB/s

177,6Gb/s sounds much more realistic than 355GB/s, but who knows? :bleh:


Eventually,both samsung and hynix are going to have GDDR 5 clocking quite a bit higher than 1200Mhz base clock,so it's mostly a question of when will it be released and what fab process with that memory use to acheive those speeds.

Rollo
03-19-10, 12:25 PM
Ha, indeed, "Who knows" :p

Hehe, I will choose my words carefully next time I post :D

Who knows? Rollo knows.

Fotis
03-19-10, 01:04 PM
Who knows? Rollo knows.

Ok ,so you know, but you are not allowed to say anything until the 26th of March so you arent that useful to us! :p:D

Ninja Prime
03-19-10, 01:34 PM
Its obviously not 200+ GB/s rocket scientists. It wouldn't be only 10% faster if it had nearly twice the bandwidth, and they wouldnt need twice the bandwidth with it being only 10% faster.

shadow001
03-19-10, 01:55 PM
Its obviously not 200+ GB/s rocket scientists. It wouldn't be only 10% faster if it had nearly twice the bandwidth, and they wouldnt need twice the bandwidth with it being only 10% faster.


If it were,it would eat an HD5970 alive in situations where both cards would be memory bandwith bound primarily,and they certainly wouldn't price it at 499$ for the GTX480...:D

Razor1
03-19-10, 02:47 PM
interesting line of thought :headexplode: :)

LydianKnight
03-19-10, 03:15 PM
OK I'm buying one damn. Do you think it will run things ok at 1280x720?

OMFG someone has copied my to-do idea... replacing my display with a 32-37" HDTV to MAX every setting out there at 1360x768 :zombie:

shadow001
03-19-10, 05:22 PM
interesting line of thought :headexplode: :)


Well,the way raw fillrate amounts have been going up over the last few generations of GPU's,and that overall,the memory bandwith hasn't been increasing anywhere nearly as fast as fillrate has,i'm sure GPU designers would love to have that kind of memory bandwith and would make use of it for sure.


Current single GPU's are pushing about 27 Gigapixels/sec,so that's 27 billion pixels per second....A single 30" LCD has 4.1 million pixels when running at 2560*1600 resolution(it's native resolution),so one could display about 6500 frames per second in theory of course,assuming nothing else holds it back,which there obviously is(available memory bandwith being one of them).


Theoretical power on GPU's is getting crazy and pretty academic overall.

Razor1
03-19-10, 05:53 PM
you aren't getting the hint ;)

shadow001
03-19-10, 06:11 PM
you aren't getting the hint ;)


Gimme another clue then....:)

sammy sung
03-19-10, 06:41 PM
Gimme another clue then....:)

Hint: Wall of text....do NOT want !

FearMeAll
03-19-10, 07:32 PM
OMFG someone has copied my to-do idea... replacing my display with a 32-37" HDTV to MAX every setting out there at 1360x768 :zombie:

I did this many years ago..It's the way I roll man :captnkill:

I'd rather play maxed out everything at 1280x720 on a 160" screen with 5.1 surround sound. It's epic. I lay on my lazyboy couch and use my wireless backlit keyboard and mouse ( http://www.amazon.com/Microsoft-Wireless-Entertainment-Desktop-Silver/dp/B000MAFPVW ) and play. I use the xbox controller when I can.

Sitting at least 20 feet away everything is razor sharp and has that definite "HD" feel to it. To your eyes it just looks massive.

I'm going with a 3d projector next year when all the bugs are worked out. I'll throw up in some parts of games. It'll be awesome.

nekrosoft13
03-19-10, 09:26 PM
not sure was this posted already?

Although there is not any official word from Nvidia on its highly anticipated high end GTX 480 and GTX 470 cards, their specifications and pricing details emerged online.

Priced at $499, the 480 will offer 480 shader processors, a 384-bit interface to 1.5GB of onboard GDDR5 RAM, and clock speeds of 700MHz, 1,401MHz, and 1,848MHz for the core, shaders and memory, respectively.

The GTX 470 features 446 shader processors, slower clocks, and a 320-bit memory interface, but it's also priced at $349.

According to unconfirmed information published on the VR-Zone web site, the cards will feature high TDPs - 225W for the 470 model and 295W for the 490 card. The web - site also reports a 5-10 percent benchmarking advantage for the GTX 480 over ATI's HD 5870.

VR-Zone also claims that the GF100 GPU has 512 SP clocked at 725/1450/1050MHz with 295W TDP. However, for the initial launch, Nvidia's GTX 480 has 480 SP with clocks lowered to 700/1401/1848MHz at 250W TDP.

As usually, Nvidia did not make any comment on the report.

http://www.cdrinfo.com/Sections/News/Details.aspx?NewsId=27185

K007
03-19-10, 09:36 PM
5-10%...thats....not that exciting lol

XxDeadlyxX
03-19-10, 09:46 PM
Well all the GTX 470/480 are really for are us Nvidia fanboys who refuse to go to ATI for an upgrade :p

So performance is important but the fact it's Nvidia with all their much better features (PhysX, 3D Vision, SLI > crossfire) is what makes it appealing. So the fact it's only 10% faster than 5870 doesn't concern me too much.

CaptNKILL
03-19-10, 10:09 PM
So performance is important but the fact it's Nvidia with all their much better features (PhysX, 3D Vision, SLI > crossfire) is what makes it appealing. So the fact it's only 10% faster than 5870 doesn't concern me too much.

I pretty much agree with this.

I like the features. As long as it isn't ridiculously expensive it'll be worth it to get a card that's a little faster than a 5870 but has nvidia's drivers and feature set.

Rollo
03-19-10, 10:22 PM
I pretty much agree with this.

I like the features. As long as it isn't ridiculously expensive it'll be worth it to get a card that's a little faster than a 5870 but has nvidia's drivers and feature set.

This

lee63
03-19-10, 11:04 PM
I pretty much agree with this.

I like the features. As long as it isn't ridiculously expensive it'll be worth it to get a card that's a little faster than a 5870 but has nvidia's drivers and feature set.I'll prolly do it...these cards have done me well for 6 months.

Or maybe I'll check out ATi's refresh...all I know is, is that I have fun with it :D

K007
03-20-10, 12:24 AM
Well all the GTX 470/480 are really for are us Nvidia fanboys who refuse to go to ATI for an upgrade :p

So performance is important but the fact it's Nvidia with all their much better features (PhysX, 3D Vision, SLI > crossfire) is what makes it appealing. So the fact it's only 10% faster than 5870 doesn't concern me too much.

i am still puzzled by this SLI > Xfire business....i thought ATi has done a really good job with there drivers.

Physx/Cuda is what will be interesting for me.

but if 5-10% more performance = 30-40% more cost increase...ontop of that the pretty steep power requirements (other thread says almost as a 5970 which is a dual gpu).

I hope the performance is up there tho, i really do hope the gtx480 is a beast, this will give ATi something to work for when they do there next refresh, and in the meantime the 5870 should drop in price, which might make me go with the 5870...but if the 480 is a true beast..i will be getting that 4 sure..

Vardant
03-20-10, 01:52 AM
I don't know if anybody noticed, but according to http://www.hardware-infos.com/news.php?news=3484 the GTX 470 TDP went down by 10W.

Ninja Prime
03-20-10, 02:40 AM
I don't know if anybody noticed, but according to http://www.hardware-infos.com/news.php?news=3484 the GTX 470 TDP went down by 10W.

Clocks also went down, I think the 625/1250 card people previewed were factory overclocked, with the higher TDP.

Fotis
03-20-10, 03:50 AM
I hope its not true but 32 cores disabled? I guess they couldnt make the chip work.Fail.:(