GeForce GTX 650 vs Radeon R9 285

Intro

Compare those specs to the Radeon R9 285, which comes with a core clock speed of 918 MHz and a GDDR5 memory speed of 1375 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It features 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

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

Radeon R9 285		8500 points
GeForce GTX 650		2263 points
	Difference: 6237 (276%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon R9 285		190 Watts
	Difference: 126 Watts (197%)

Memory Bandwidth

In theory, the Radeon R9 285 should be a lot faster than the GeForce GTX 650 in general. (explain)

Radeon R9 285		176000 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 96000 (120%)

Texel Rate

The Radeon R9 285 will be quite a bit (more or less 204%) better at anisotropic filtering than the GeForce GTX 650. (explain)

Radeon R9 285		102816 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 68960 (204%)

Pixel Rate

The Radeon R9 285 should be a lot (approximately 74%) more effective at anti-aliasing than the GeForce GTX 650, and able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 285		29376 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 12448 (74%)

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 maximum amount of information (counted in megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 amount of texture map elements (texels) that are processed per second. This figure 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.