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Same GPU in 480, 470, 465? Components that separate same-series cards?

post #1 of 7
Thread Starter 
This is something I've always wanted to know and have looked for here and there online but have never really been able to nail it down..

It's easiest to ask my question with an example. The earlier fermi's are based off of the gf100 core.. I am wondering, do the gtx 480, 470 and 465 have the same chip in them? Is it the same gpu in all 3 cards? Is the only difference between them the amount of CUDA cores (shaders)?, ram and bios-set frequencies?

I would really like to know, and this goes for any series / card aswell. For example, the 5870 and 5850. Is it the same gpu in the card? Is the only reason for the performance difference between them the variations in amount of ram, shaders, clock speed etc?

I know that nvidia is famous for rebranding gpu's, like the 8800gtx to the 9800gtx to the gtx 260 ? What is actually done to be able to reuse the gpu as such? Is it the architecture that remains the same? I am really wanting to learn about the actual mechanics of the cards / chips.

Any resource bank or personal knowledge would really help me a lot. Thanks guys.
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post #2 of 7
http://en.wikipedia.org/wiki/GeForce_400_Series

chart at the bottom, but in short yes. thats why a 465 could be unlocked to a 470
     
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by Sircles View Post
http://en.wikipedia.org/wiki/GeForce_400_Series

chart at the bottom, but in short yes. thats why a 465 could be unlocked to a 470
Are the additional shaders (224 in the gtx465 compared to the 480 in the gtx480) something that are embedded into the GPU? or on the PCB?
Edited by Pankie - 3/21/11 at 11:10am
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post #4 of 7
Into the PCB.
post #5 of 7

Yes, its called binning. Lynus has a video explaining what binning is.

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post #6 of 7
Quote:
Originally Posted by Pankie View Post
Are the additional shaders (224 in the gtx465 compared to the 448 in the gtx480) something that are embedded into the GPU? or on the PCB?
GTX 465 Locked: 352 CUDA
GTX 470: 448 CUDA
GTX 480: 480 CUDA

Where did you get those numbers from?
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post #7 of 7
Thread Starter 
Quote:
Originally Posted by blackbalt89 View Post
GTX 465 Locked: 352 CUDA
GTX 470: 448 CUDA
GTX 480: 480 CUDA

Where did you get those numbers from?
Sorry I have corrected myself about the gtx 480.. but My 465 definitely shows me 224 shaders, not 352. I think it might be a gpu-z error or a bios problem? I know this is on a complete side note but what happened was my card stopped working (was originally an unlocked 465 into 470) and they sent me a real 465 (only 8 ram chips) that won't unlock so I'm running a stock 465 bios on it.

><
Edited by Pankie - 3/21/11 at 11:14am
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