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8800GT Ramblings Thread

GF8800GT-Q&A with Nvidia

http://extreme.pcgameshardware.de/showthread.php?t=4190

Hallo,

Thanks for taking the time to answer our questions!


PCGH:
Why did you re-integrate NVIO-functionality into the main die and how much die space (or transistors) did that roughly cost?

Nvidia:
Going to 65nm allows us to integrate more transistors into the chip and reduce routing complexity.


PCGH:
Does the G92/GF8800 GT chip support double-precision to be used in the Tesla-line of cards? If so, what about the number of cycles compared to single-precision?

Nvidia:
The Geforce 8800 GT does not support double precision.


PCGH:
Did you improve on the number of registers per Thread? If i remember correctly from your CUDA-documents, there were about 10,6 for every thread.

Nvidia:
Registers per thread are the same.


PCGH:
How many Quad-TMUs does GF8800 GT use? Are the TMUs still coupled to the 7 TPCs or is their freely scalable now?

Nvidia:
Up to 8 Texture address ops and texture filtering ops can be done per clock, per TPC. 7 * 8 = 56 Units for the chip. The texture units are coupled to TPCs.


PCGH:
Did any of the filtering characteristics change compared to G80? Does G92 filter some formats now single-cycle which G80 couldn't?

Nvidia:
G92 can do up to 2x more bilinear filtering ops per clock, per TPC.


PCGH:
What is the minimal thread size? Did it change compared to G80?

Nvidia:
It's still the same.


PCGH:
Are the TPC still organized as 16x SIMDs or did you improve on granularity?

Nvidia:
They are the same.


PCGH:
Any important changes to the ROPs? Still single-cycle 4x MSAA, 4 pixels each / alt. 8 Z-Values per clock?

Nvidia:
ROP Compression system is improved for high resolutions with AA. Compression now covers scenes up to 2560 x 1600 with 4xAA (thought it may be shader bound at this point)


PCGH:
Did you improve the geometry shader amplification performance, esp. under heavy load?

Nvidia:
No, it's the same as G80.


PCGH:
Did you improve on triangle-setup? How many tri/s can you setup before and now?

Nvidia:
Up to one triangle per clock, like G80.


PCGH:
Is the GF8800 GT's VP identical to the one used in G84/G86?

Nvidia:
Yes.


PCGH:
Is the mentioned TDP of 100 watts the absolute maximum on stock clocks? Can you give a rough estimate as to what percentage of the TDP one would typically experience in a 3DMark-run?

Nvidia:
110W is the max board power.


PCGH:
Will the G80 chip continue to be used only in the highest-end cards, e.g. GTX and Ultra?

Nvidia:
Yes, absolutely. GTX is more than 20% faster than the 8800 GT at 25x16 4xAA.


PCGH:
What about AGP? Is there a new brigde-chip coming to support GF8800GT chips?

Nvidia:
Sorry, no comments on unannounced products.


PCGH:
SLI: Did you improve on inter card bandwidth? What kind of protocol do you use for SLI communication? Something like PCI-Express?

Nvidia:
We use a combination of PCI Express and the SLI bridge. This remains the same on GeForce 8800 GT.


PCGH:
Thanks for the answers



Das Interview führte Carsten Spille.
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from other forums ive been on some have recieved it with there order .these were in the usa.so i guess britain = no.i hope everyone does hold back buying the cards maybe the price will fly down then to what they should be priced at.
 
Tom|Nbk said:
You clearly don't understand business. Back to the drawing board again Dave.
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You like to put a downer on people dont you. hence being on other peoples ignore list.

Metalface Mark said:
He sounds like someone has nicked his football and they are demanding money to give it back.

BigDave, you do not have to buy the card, no one forces you, i happen to think for under £200 they are fanastic value, fortunately i paid under £150 for mine which is even better.

What i found amusing, he was so heated up, he couldnt even construct a proper sentence :p
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No i wasn't heated i dont intend on buying one. The point i was tryign to get across is the fact that they are just being pushed up in price to swease people of money even further. If tahts at 200 quid for the top ones then whats the GTS and GTX goign to be at If your adding 75% on to the price every time you go up a model?
 
Blahhh... anyway... still doesn't stop it being a great card :) Just waiting for the zero day reviews lol.

Matthew
 
Tom|Nbk said:
What and it bothers me that peope stick their fingers in their ears to what I have to say?

Can't please everyone.
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Dont have to go out of your way to displease people though. If you can annoy people enough on a forum for them to ignore you then i can only imagine its worse in real life. Do people walk past you with their fingers in their ears then?
 
8igdave said:
Dont have to go out of your way to displease people though. If you can annoy people enough on a forum for them to ignore you then i can only imagine its worse in real life. Do people walk past you with their fingers in their ears then?
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Right, because I act just as I do on an Internet forum in real life :rolleyes:

Get back on topic dave for God sakes.
 
Right, well the GTS has gone for 200 quid and I've bagged a cheapo card for £12.50 to tide me over. Going to wait for the new GTS and then make a decision on one of those or a GT.
 
Tom|Nbk said:
Right, because I act just as I do in real life as I do on an Internet forum :rolleyes:

Get back on topic dave for God sakes.
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All you do is attack me. If you dont like what i say put your fingers in your ears instead perhaps? And why would you act differnt in real life? Like the people who grow their E-penis online because they are weedy geeks in real life?

Vertigo1 said:
Right, well the GTS has gone for 200 quid and I've bagged a cheapo card for £12.50 to tide me over. Going to wait for the new GTS and then make a decision on one of those or a GT.
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200 quid? Who paid that much for a gts. You got a great deal there :p
 
Vertigo1 said:
Right, well the GTS has gone for 200 quid and I've bagged a cheapo card for £12.50 to tide me over. Going to wait for the new GTS and then make a decision on one of those or a GT.
Click to expand...

Thats what I've done, sold the GTX put the money on one side. Hope they release something faster soon. I have the GT coming, but that destined for another PC after a bit. And foe me, I doubt its man enough to replace the GTX at 1920x1200 with any AA enabled.
 
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Any suggestions on a super budget graphics card ? as low price as possible, think im guna get on the bandwagon and sell my gts 320mb too.
 
8igdave said:
All you do is attack me. If you dont like what i say put your fingers in your ears instead perhaps? And why would you act differnt in real life? Like the people who grow their E-penis online because they are weedy geeks in real life?



200 quid? Who paid that much for a gts. You got a great deal there :p
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This is a discussion forum, a debating forum if you like, the idea is we have heated debates on here over graphics cards because that is basically the idea, would be boring otherwise right?.

Would be silly for me to carry that over to real life now wouldn't it.

Also I only wish I was a bit weedier :o:(

Back OT:

Anyone got more details of the upcoming GTS.
 
I think now is the time to get a dX10 compatible backup card i was thinking the 8600gt or similar something you can still just about game on when your swapping out old for new.
 
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