GeForce GTX 260 Core 216 vs Radeon R9 380 4G

Intro

Compare that to the Radeon R9 380 4G, which comes with GPU clock speed of 970 MHz, and 4096 MB of GDDR5 memory set to run at 1425 MHz through a 256-bit bus. It also is comprised of 1792 Stream Processors, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 4G		190 Watts
GeForce GTX 260 Core 216		202 Watts
	Difference: 12 Watts (6%)

Memory Bandwidth

As far as performance goes, the Radeon R9 380 4G should theoretically be much superior to the GeForce GTX 260 Core 216 overall. (explain)

Radeon R9 380 4G		182400 MB/sec
GeForce GTX 260 Core 216		111888 MB/sec
	Difference: 70512 (63%)

Texel Rate

The Radeon R9 380 4G is quite a bit (approximately 162%) better at AF than the GeForce GTX 260 Core 216. (explain)

Radeon R9 380 4G		108640 Mtexels/sec
GeForce GTX 260 Core 216		41472 Mtexels/sec
	Difference: 67168 (162%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 380 4G is the winner, by a large margin. (explain)

Radeon R9 380 4G		31040 Mpixels/sec
GeForce GTX 260 Core 216		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 largest amount of data (measured in megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling 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 could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.