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GeForce 8800 GT 256MB vs GeForce GTX 650

Intro

The GeForce 8800 GT 256MB features core speeds of 600 MHz on the GPU, and 700 MHz on the 256 MB of GDDR3 memory. It features 112 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Compare that to the GeForce GTX 650, which has core speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce 8800 GT 256MB 105 Watts
Difference: 41 Watts (64%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 650 should in theory be much better than the GeForce 8800 GT 256MB in general. (explain)

GeForce GTX 650 80000 MB/sec
GeForce 8800 GT 256MB 44800 MB/sec
Difference: 35200 (79%)

Texel Rate

The GeForce GTX 650 should be a small bit (about 1%) faster with regards to anisotropic filtering than the GeForce 8800 GT 256MB. (explain)

GeForce GTX 650 33856 Mtexels/sec
GeForce 8800 GT 256MB 33600 Mtexels/sec
Difference: 256 (1%)

Pixel Rate

The GeForce GTX 650 will be a lot (approximately 76%) more effective at full screen anti-aliasing than the GeForce 8800 GT 256MB, and able to handle higher resolutions more effectively. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce 8800 GT 256MB 9600 Mpixels/sec
Difference: 7328 (76%)

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

Display Prices

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GeForce 8800 GT 256MB

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

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Model GeForce 8800 GT 256MB GeForce GTX 650
Manufacturer nVidia nVidia
Year Dec 2007 September 2012
Code Name G92 GK107
Memory 256 MB 1024 MB
Core Speed 600 MHz 1058 MHz
Memory Speed 1400 MHz 5000 MHz
Power (Max TDP) 105 watts 64 watts
Bandwidth 44800 MB/sec 80000 MB/sec
Texel Rate 33600 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 112 384
Texture Mapping Units 56 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 maximum amount of data (counted in MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

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