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GeForce 8800 GTS (G92) vs GeForce GTX 650

Intro

The GeForce 8800 GTS (G92) has a GPU core speed of 650 MHz, and the 512 MB of GDDR3 memory runs at 970 MHz through a 256-bit bus. It also is comprised of 128 SPUs, 64 Texture Address Units, and 16 ROPs.

Compare those specs to the GeForce GTX 650, which has a core clock frequency of 1058 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is comprised of 384 SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce 8800 GTS (G92) 135 Watts
Difference: 71 Watts (111%)

Memory Bandwidth

Theoretically, the GeForce GTX 650 should perform much faster than the GeForce 8800 GTS (G92) overall. (explain)

GeForce GTX 650 80000 MB/sec
GeForce 8800 GTS (G92) 62080 MB/sec
Difference: 17920 (29%)

Texel Rate

The GeForce 8800 GTS (G92) will be quite a bit (approximately 23%) faster with regards to anisotropic filtering than the GeForce GTX 650. (explain)

GeForce 8800 GTS (G92) 41600 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 7744 (23%)

Pixel Rate

The GeForce GTX 650 will be much (about 63%) faster with regards to AA than the GeForce 8800 GTS (G92), and will be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce 8800 GTS (G92) 10400 Mpixels/sec
Difference: 6528 (63%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce 8800 GTS (G92)

Amazon.com

GeForce GTX 650

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Display Specifications

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Model GeForce 8800 GTS (G92) GeForce GTX 650
Manufacturer nVidia nVidia
Year Dec 2007 September 2012
Code Name G92 GK107
Memory 512 MB 2048 MB
Core Speed 650 MHz 1058 MHz
Memory Speed 1940 MHz 5000 MHz
Power (Max TDP) 135 watts 64 watts
Bandwidth 62080 MB/sec 80000 MB/sec
Texel Rate 41600 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 10400 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 128 384
Texture Mapping Units 64 32
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65 nm 28 nm
Transistors 754 million 1300 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Comments

One Response to “GeForce 8800 GTS (G92) vs GeForce GTX 650”
Anonymous says:

thanks....really usefull information

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