Radeon HD 5770 vs Radeon R7 260X

Intro

Compare all of that to the Radeon R7 260X, which makes use of a 28 nm design. AMD has clocked the core frequency at 1100 MHz. The GDDR5 memory is set to run at a speed of 1625 MHz on this card. It features 896 SPUs as well as 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

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

Theoretically speaking, the Radeon R7 260X is 35% faster than the Radeon HD 5770 in general, because of its greater data rate. (explain)

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

Texel Rate

The Radeon R7 260X is much (approximately 81%) faster with regards to AF than the Radeon HD 5770. (explain)

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

Pixel Rate

The Radeon R7 260X should be a lot (more or less 29%) more effective at full screen anti-aliasing than the Radeon HD 5770, and also should be capable of handling higher screen resolutions more effectively. (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: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 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 AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.