GeForce GTX 260 216SP 55 nm vs Radeon R9 380X

Intro

Compare those specs to the Radeon R9 380X, which has a clock speed of 970 MHz and a GDDR5 memory frequency of 1425 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It features 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 260 216SP 55 nm		171 Watts
Radeon R9 380X		190 Watts
	Difference: 19 Watts (11%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380X is 63% faster than the GeForce GTX 260 216SP 55 nm overall, due to its higher bandwidth. (explain)

Radeon R9 380X		182400 MB/sec
GeForce GTX 260 216SP 55 nm		111888 MB/sec
	Difference: 70512 (63%)

Texel Rate

The Radeon R9 380X is a lot (more or less 199%) better at texture filtering than the GeForce GTX 260 216SP 55 nm. (explain)

Radeon R9 380X		124160 Mtexels/sec
GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
	Difference: 82688 (199%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 380X is superior to the GeForce GTX 260 216SP 55 nm, by far. (explain)

Radeon R9 380X		31040 Mpixels/sec
GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
	Difference: 14912 (92%)

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 maximum amount of information (measured in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the 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 number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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