Nvidia's new architecture, nicknamed "Fermi" and designed to compete with the ATI Radeon 58xx series has been revealed. However, the two couldn't be much more different as Nvidia pursues an architecture similar to that of a desktop CPU. Here is what BSN had to say:
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Beside the regular NV70 and GT300 codenames [codename for the GPU], nVidia's insiders called the GPU architecture - Fermi. Enrico Fermi was an Italian physicist who is credited with the invention of nuclear reactor. That brings us to one of codenames we heard for one of the GT300 board itself - "reactor".
When it comes to boards themselves, you can expect to see configurations with 1.5, 3.0 GB and 6GB of GDDR5 memory, but more on that a little bit later.
GPU specifications
This is the meat part you always want to read fist. So, here it how it goes:
• 3.0 billion transistors
• 40nm TSMC
• 384-bit memory interface
• 512 shader cores [renamed into CUDA Cores]
• 32 CUDA cores per Shader Cluster
• 1MB L1 cache memory [divided into 16KB Cache - Shared Memory]
• 768KB L2 unified cache memory
• Up to 6GB GDDR5 memory
• Half Speed IEEE 754 Double Precision
As you can read for yourself, the GT300 packs three billion transistors of silicon real estate, packing 16 Streaming Multiprocessor [new name for former Shader Cluster] in a single chip. Each of these sixteen multiprocessors packs 32 cores...
Just like the G80 chip, nVidia GT300 packs six 64-bit memory controllers for a grand total of 384-bit, bringing back the odd memory capacity numbers. The memory controller is a GDDR5 native controller, which means it can take advantage of built-in ECC features inside the GDDR5 SDRAM memory and more importantly, GT300 can drive GDDR5 memory in the same manner as AMD can with its really good Radeon HD 5800 series.
When it comes to boards themselves, you can expect to see configurations with 1.5, 3.0 GB and 6GB of GDDR5 memory, but more on that a little bit later.
GPU specifications
This is the meat part you always want to read fist. So, here it how it goes:
• 3.0 billion transistors
• 40nm TSMC
• 384-bit memory interface
• 512 shader cores [renamed into CUDA Cores]
• 32 CUDA cores per Shader Cluster
• 1MB L1 cache memory [divided into 16KB Cache - Shared Memory]
• 768KB L2 unified cache memory
• Up to 6GB GDDR5 memory
• Half Speed IEEE 754 Double Precision
As you can read for yourself, the GT300 packs three billion transistors of silicon real estate, packing 16 Streaming Multiprocessor [new name for former Shader Cluster] in a single chip. Each of these sixteen multiprocessors packs 32 cores...
Just like the G80 chip, nVidia GT300 packs six 64-bit memory controllers for a grand total of 384-bit, bringing back the odd memory capacity numbers. The memory controller is a GDDR5 native controller, which means it can take advantage of built-in ECC features inside the GDDR5 SDRAM memory and more importantly, GT300 can drive GDDR5 memory in the same manner as AMD can with its really good Radeon HD 5800 series.
Source
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