Radeon HD 6770 1GB vs Radeon R7 260X

Intro

Compare those specs to the Radeon R7 260X, which comes with core clock speeds of 1100 MHz on the GPU, and 1625 MHz on the 2048 MB of GDDR5 memory. It features 896 SPUs as well as 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB		108 Watts
Radeon R7 260X		115 Watts
	Difference: 7 Watts (6%)

Memory Bandwidth

In theory, the Radeon R7 260X should perform much faster than the Radeon HD 6770 1GB in general. (explain)

Radeon R7 260X		104000 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 36800 (55%)

Texel Rate

The Radeon R7 260X should be quite a bit (approximately 71%) better at texture filtering than the Radeon HD 6770 1GB. (explain)

Radeon R7 260X		61600 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 25600 (71%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R7 260X is the winner, and very much so. (explain)

Radeon R7 260X		17600 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 3200 (22%)

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 information (measured in megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it 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 AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the 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 clock speed of the card. 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 fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.