GeForce 9900 GTX & GTS Slated For July Launch

[msgclb]

I've been looking for specs on the GTX260 but except for Fudzilla they have been lacking. I don't know how accurate they are but the Fudzilla article and quotes from it are all I can find. Maybe we'll find out how accurate they are before next Tuesday.

Slightly slower

Nvidia’s second GT200-based card will also be available for sale in about six days and here are the final details and clocks. Geforce GTX 260 is, as well, based on 65nm GT200 core that has 1.4 billion transistors, but this time clocked to 576MHz. Some of these transistors will sit disabled, as GTX 260 has one of eight clusters disabled.

The Shaders are clocked to 1242MHz and the card has a total of 192 Shaders (what used to be called Shader units are now called processor cores).

The card has an odd number of 896MB GDDR3 memory clocked at 999MHz (1998MHz effectively) and this is enough for 111.9GB/s bandwidth. The slower of the chips has 28 ROPs, 64 Texture filtering units and 36.9GigaTexels/second of texture filtering rate.

If you look at these specs closely, you will see that GTX 260 is the same as GTX 280, but with one cluster disabled. If GTX 280 has eight clusters, GTX 260 ends up at seven.

The card has HDCP, HDMI via DVI, but this time two 6-pin power connectors; and launches next Tuesday.

[Extelleron]

I've been looking for specs on the GTX260 but except for Fudzilla they have been lacking. I don't know how accurate they are but the Fudzilla article and quotes from it are all I can find. Maybe we'll find out how accurate they are before next Tuesday.

Slightly slower

Nvidia’s second GT200-based card will also be available for sale in about six days and here are the final details and clocks. Geforce GTX 260 is, as well, based on 65nm GT200 core that has 1.4 billion transistors, but this time clocked to 576MHz. Some of these transistors will sit disabled, as GTX 260 has one of eight clusters disabled.

The Shaders are clocked to 1242MHz and the card has a total of 192 Shaders (what used to be called Shader units are now called processor cores).

The card has an odd number of 896MB GDDR3 memory clocked at 999MHz (1998MHz effectively) and this is enough for 111.9GB/s bandwidth. The slower of the chips has 28 ROPs, 64 Texture filtering units and 36.9GigaTexels/second of texture filtering rate.

If you look at these specs closely, you will see that GTX 260 is the same as GTX 280, but with one cluster disabled. If GTX 280 has eight clusters, GTX 260 ends up at seven.

The card has HDCP, HDMI via DVI, but this time two 6-pin power connectors; and launches next Tuesday.

You have to love FUD.....

He still thinks GT200 has 8 clusters, meanwhile a die shot clearly shows it has 10. The GTX 260 has 8/10 enabled.... how does he expect the card to have 7/8 clusters enabled yet have 192 SPs?

[Rammsteiner]

http://www.azerty.nl/producten/zoek?...ING=prijs_desc

Zotac GTX280 549
Zotag GTX260 373

Doesnt seem any different compared usual new nVidia high end cards

[msgclb]

You have to love FUD.....

He still thinks GT200 has 8 clusters, meanwhile a die shot clearly shows it has 10. The GTX 260 has 8/10 enabled.... how does he expect the card to have 7/8 clusters enabled yet have 192 SPs?

Consider the following statement:

Nvidia’s GeForce 9800 GTX features 16 ROPs. The ROPs are split into four clusters – each is able to process four pixels per clock and is also connected to a 64-bit memory interface. This means that there’s a 256-bit memory interface on the GPU and it connects out to eight 64MB GDDR3 DRAMs, making a total of 512MB of video memory.

If that's true and I believe it is then I'm going to use some reverse logic to theorize the following:

Nvidia’s GeForce GTX280 features 32 ROPs. The ROPs are probably split into eight (dividing 32 by 4) clusters – each is able to process four pixels per clock and is also connected to a 64-bit memory interface. This means that there’s a 512-bit memory interface on the GPU and it connects out to sixteen 64MB GDDR3 DRAMs, making a total of 1GB of video memory.

Nvidia’s GeForce GTX260 features 28 ROPs. The ROPs are probably split into seven (dividing 28 by 4) clusters – each is able to process four pixels per clock and is also connected to a 64-bit memory interface. This means that there’s a 448-bit memory interface on the GPU and it connects out to fourteen 64MB GDDR3 DRAMs, making a total of 896MB of video memory.

I know that I've seen how many memory chips there are on these boards somewhere but I didn't take to time to see it is 16 and 14 as I stated above.

Are we talking about the same clusters?

[Extelleron]

Consider the following statement:


If that's true and I believe it is then I'm going to use some reverse logic to theorize the following:

Nvidia’s GeForce GTX280 features 32 ROPs. The ROPs are probably split into eight (dividing 32 by 4) clusters – each is able to process four pixels per clock and is also connected to a 64-bit memory interface. This means that there’s a 512-bit memory interface on the GPU and it connects out to sixteen 64MB GDDR3 DRAMs, making a total of 1GB of video memory.

Nvidia’s GeForce GTX260 features 28 ROPs. The ROPs are probably split into seven (dividing 28 by 4) clusters – each is able to process four pixels per clock and is also connected to a 64-bit memory interface. This means that there’s a 448-bit memory interface on the GPU and it connects out to fourteen 64MB GDDR3 DRAMs, making a total of 896MB of video memory.

I know that I've seen how many memory chips there are on these boards somewhere but I didn't take to time to see it is 16 and 14 as I stated above.

Are we talking about the same clusters?

We're talking about different things.

I am talking about the SP clusters, of which the SPs and the TMUs are a part of. GT200 has 10 SP clusters, each with 24 SPs and 8 TMUs. The GTX 280 has all 10 enabled, so that gives it 240 SP / 80 TMU. The GTX 260 has 8 enabled, so that gives it 192 SP / 64 TMU.

You are talking about ROPs, which are seperate from the SP clusters but are tied directly to the memory bus width. In terms of ROPs, 28 out of the 32 found on GT200 are enabled in the GTX 260 model. So that does work out to 7/8. This is why you see the 448-bit bus on the GTX 260; 28 * 16 = 448, just like 32 * 16 = 512

FUD just doesn't know what he is talking about. Nobody refers to ROPs as "clusters" so I doubt he meant to refer to them.