GeForce GTX 285 2GB vs Radeon HD 7850

Intro

Compare those specs to the Radeon HD 7850, which makes use of a 28 nm design. AMD has clocked the core speed at 860 MHz. The GDDR5 memory is set to run at a speed of 1200 MHz on this particular card. It features 1024 SPUs along with 64 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850		130 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 74 Watts (57%)

Memory Bandwidth

The GeForce GTX 285 2GB, in theory, should perform a little bit faster than the Radeon HD 7850 overall. (explain)

GeForce GTX 285 2GB		158976 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 5376 (4%)

Texel Rate

The Radeon HD 7850 should be a bit (more or less 6%) faster with regards to texture filtering than the GeForce GTX 285 2GB. (explain)

Radeon HD 7850		55040 Mtexels/sec
GeForce GTX 285 2GB		51840 Mtexels/sec
	Difference: 3200 (6%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 7850 is a better choice, by far. (explain)

Radeon HD 7850		27520 Mpixels/sec
GeForce GTX 285 2GB		20736 Mpixels/sec
	Difference: 6784 (33%)

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 (in units of megabytes per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 once 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 anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total amount of texture units of the card by the core 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.