Geforce GTX 690 vs Radeon R9 285

Intro

Compare those specs to the Radeon R9 285, which features core speeds of 918 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 memory. It features 1792 SPUs as well as 112 Texture Address Units and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Geforce GTX 690		13111 points
Radeon R9 285		8500 points
	Difference: 4611 (54%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 285		190 Watts
Geforce GTX 690		300 Watts
	Difference: 110 Watts (58%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 690 will be 118% faster than the Radeon R9 285 in general, due to its greater bandwidth. (explain)

Geforce GTX 690		384512 MB/sec
Radeon R9 285		176000 MB/sec
	Difference: 208512 (118%)

Texel Rate

The Geforce GTX 690 should be a lot (more or less 128%) faster with regards to anisotropic filtering than the Radeon R9 285. (explain)

Geforce GTX 690		234240 Mtexels/sec
Radeon R9 285		102816 Mtexels/sec
	Difference: 131424 (128%)

Pixel Rate

The Geforce GTX 690 will be quite a bit (approximately 99%) more effective at anti-aliasing than the Radeon R9 285, and will be capable of handling higher screen resolutions more effectively. (explain)

Geforce GTX 690		58560 Mpixels/sec
Radeon R9 285		29376 Mpixels/sec
	Difference: 29184 (99%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.