GeForce GTX 260 216SP 55 nm vs GeForce GTX 950

Intro

Compare all of that to the GeForce GTX 950, which comes with core clock speeds of 1024 MHz on the GPU, and 1652 MHz on the 2048 MB of GDDR5 memory. It features 768 SPUs as well as 48 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950		90 Watts
GeForce GTX 260 216SP 55 nm		171 Watts
	Difference: 81 Watts (90%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 260 216SP 55 nm is 6% quicker than the GeForce GTX 950 in general, due to its greater bandwidth. (explain)

GeForce GTX 260 216SP 55 nm		111888 MB/sec
GeForce GTX 950		105728 MB/sec
	Difference: 6160 (6%)

Texel Rate

The GeForce GTX 950 is just a bit (approximately 19%) faster with regards to AF than the GeForce GTX 260 216SP 55 nm. (explain)

GeForce GTX 950		49152 Mtexels/sec
GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
	Difference: 7680 (19%)

Pixel Rate

The GeForce GTX 950 is a lot (more or less 103%) faster with regards to FSAA than the GeForce GTX 260 216SP 55 nm, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 950		32768 Mpixels/sec
GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
	Difference: 16640 (103%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.