GeForce GTX 285 1GB vs Radeon R9 380 4G

Intro

Compare all of that to the Radeon R9 380 4G, which comes with core speeds of 970 MHz on the GPU, and 1425 MHz on the 4096 MB of GDDR5 memory. It features 1792 SPUs as well as 112 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 4G		190 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 14 Watts (7%)

Memory Bandwidth

In theory, the Radeon R9 380 4G will be 15% quicker than the GeForce GTX 285 1GB overall, because of its higher data rate. (explain)

Radeon R9 380 4G		182400 MB/sec
GeForce GTX 285 1GB		158976 MB/sec
	Difference: 23424 (15%)

Texel Rate

The Radeon R9 380 4G is quite a bit (approximately 110%) better at AF than the GeForce GTX 285 1GB. (explain)

Radeon R9 380 4G		108640 Mtexels/sec
GeForce GTX 285 1GB		51840 Mtexels/sec
	Difference: 56800 (110%)

Pixel Rate

The Radeon R9 380 4G will be quite a bit (about 50%) faster with regards to AA than the GeForce GTX 285 1GB, and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 380 4G		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: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs 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 output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.