GeForce GTX 465 vs Radeon R9 285

Intro

Compare all that to the Radeon R9 285, which uses a 28 nm design. AMD has clocked the core frequency at 918 MHz. The GDDR5 memory works at a frequency of 1375 MHz on this particular card. 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 285		190 Watts
GeForce GTX 465		200 Watts
	Difference: 10 Watts (5%)

Memory Bandwidth

Performance-wise, the Radeon R9 285 should theoretically be quite a bit better than the GeForce GTX 465 overall. (explain)

Radeon R9 285		176000 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 73408 (72%)

Texel Rate

The Radeon R9 285 is a lot (more or less 285%) better at texture filtering than the GeForce GTX 465. (explain)

Radeon R9 285		102816 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 76108 (285%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 285 is a better choice, by far. (explain)

Radeon R9 285		29376 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 9952 (51%)

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 information (counted in megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.