GeForce GTX 285 1GB vs Radeon R9 380 2G

Intro

Compare that to the Radeon R9 380 2G, which makes use of a 28 nm design. AMD has set the core frequency at 970 MHz. The GDDR5 RAM is set to run at a frequency of 1425 MHz on this model. It features 1792 SPUs as well as 112 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 2G		190 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 14 Watts (7%)

Memory Bandwidth

The Radeon R9 380 2G should theoretically be just a bit faster than the GeForce GTX 285 1GB overall. (explain)

Radeon R9 380 2G		182400 MB/sec
GeForce GTX 285 1GB		158976 MB/sec
	Difference: 23424 (15%)

Texel Rate

The Radeon R9 380 2G will be quite a bit (approximately 110%) faster with regards to anisotropic filtering than the GeForce GTX 285 1GB. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
GeForce GTX 285 1GB		51840 Mtexels/sec
	Difference: 56800 (110%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 380 2G is superior to the GeForce GTX 285 1GB, by a large margin. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
GeForce GTX 285 1GB		20736 Mpixels/sec
	Difference: 10304 (50%)

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: Bandwidth is the largest amount of information (in units of MB per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling 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 chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines 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 rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.