GeForce GTX 260 216SP 55 nm vs Radeon R7 250

Intro

Compare all of that to the Radeon R7 250, which features GPU clock speed of 1000 MHz, and 1024 MB of GDDR5 RAM running at 1150 MHz through a 128-bit bus. It also is made up of 384 SPUs, 24 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
GeForce GTX 260 216SP 55 nm		171 Watts
	Difference: 106 Watts (163%)

Memory Bandwidth

In theory, the GeForce GTX 260 216SP 55 nm should perform much faster than the Radeon R7 250 overall. (explain)

GeForce GTX 260 216SP 55 nm		111888 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 38288 (52%)

Texel Rate

The GeForce GTX 260 216SP 55 nm should be much (about 73%) more effective at AF than the Radeon R7 250. (explain)

GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 17472 (73%)

Pixel Rate

The GeForce GTX 260 216SP 55 nm is a lot (more or less 102%) better at FSAA than the Radeon R7 250, and able to handle higher resolutions while still performing well. (explain)

GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 8128 (102%)

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 largest amount of information (counted in MB per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

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