Radeon HD 5770 vs Radeon R7 260X

Intro

Compare all of that to the Radeon R7 260X, which uses a 28 nm design. AMD has set the core speed at 1100 MHz. The GDDR5 RAM runs at a frequency of 1625 MHz on this particular card. It features 896 SPUs as well as 56 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
Radeon R7 260X		115 Watts
	Difference: 7 Watts (6%)

Memory Bandwidth

The Radeon R7 260X, in theory, should perform a lot faster than the Radeon HD 5770 in general. (explain)

Radeon R7 260X		104000 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 27200 (35%)

Texel Rate

The Radeon R7 260X is quite a bit (approximately 81%) faster with regards to anisotropic filtering than the Radeon HD 5770. (explain)

Radeon R7 260X		61600 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 27600 (81%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R7 260X is a better choice, by a large margin. (explain)

Radeon R7 260X		17600 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 4000 (29%)

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: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 can be processed in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many 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.