Radeon HD 5770 vs Radeon R9 Nano

Intro

Compare that to the Radeon R9 Nano, which comes with clock speeds of 1000 MHz on the GPU, and 500 MHz on the 4096 MB of HBM memory. It features 4096 SPUs along with 256 TAUs and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
Radeon R9 Nano		175 Watts
	Difference: 67 Watts (62%)

Memory Bandwidth

Performance-wise, the Radeon R9 Nano should in theory be a lot better than the Radeon HD 5770 in general. (explain)

Radeon R9 Nano		512000 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 435200 (567%)

Texel Rate

The Radeon R9 Nano will be quite a bit (more or less 653%) better at AF than the Radeon HD 5770. (explain)

Radeon R9 Nano		256000 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 222000 (653%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 Nano is superior to the Radeon HD 5770, by a large margin. (explain)

Radeon R9 Nano		64000 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 50400 (371%)

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 moved past the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's 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 applied in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics 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 number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.