GeForce GTX 280 vs Radeon HD 6770

Intro

Compare all of that to the Radeon HD 6770, which features core clock speeds of 900 MHz on the GPU, and 1050 MHz on the 512 MB of GDDR5 memory. It features 800 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770		108 Watts
GeForce GTX 280		236 Watts
	Difference: 128 Watts (119%)

Memory Bandwidth

Performance-wise, the GeForce GTX 280 should theoretically be much superior to the Radeon HD 6770 in general. (explain)

GeForce GTX 280		141696 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 74496 (111%)

Texel Rate

The GeForce GTX 280 will be much (more or less 34%) faster with regards to AF than the Radeon HD 6770. (explain)

GeForce GTX 280		48160 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 12160 (34%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 280 is the winner, by a large margin. (explain)

GeForce GTX 280		19264 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 4864 (34%)

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 max amount of data (counted in megabytes per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number 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 applied in one second.

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