GeForce GTX 260 Core 216 vs Radeon R9 M385X

Intro

Compare those specs to the Radeon R9 M385X, which makes use of a 28 nm design. AMD has clocked the core frequency at 1100 MHz. The GDDR5 RAM is set to run at a speed of 1500 MHz on this model. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 260 Core 216 should theoretically be just a bit faster than the Radeon R9 M385X in general. (explain)

GeForce GTX 260 Core 216		111888 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 15888 (17%)

Texel Rate

The Radeon R9 M385X should be a lot (more or less 49%) better at texture filtering than the GeForce GTX 260 Core 216. (explain)

Radeon R9 M385X		61600 Mtexels/sec
GeForce GTX 260 Core 216		41472 Mtexels/sec
	Difference: 20128 (49%)

Pixel Rate

The Radeon R9 M385X is a bit (about 9%) faster with regards to full screen anti-aliasing than the GeForce GTX 260 Core 216, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R9 M385X		17600 Mpixels/sec
GeForce GTX 260 Core 216		16128 Mpixels/sec
	Difference: 1472 (9%)

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 data (measured in MB per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better 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 figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's 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 bandwidth is, the lower the ability to reach the maximum fill rate.