Radeon HD 7770 vs Radeon R9 Nano

Intro

Compare that to the Radeon R9 Nano, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The HBM RAM runs at a frequency of 500 MHz on this specific card. It features 4096 SPUs as well as 256 Texture Address Units and 64 ROPs.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 Nano		14918 points
Radeon HD 7770		3180 points
	Difference: 11738 (369%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon R9 Nano		175 Watts
	Difference: 95 Watts (119%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 Nano should perform much faster than the Radeon HD 7770 in general. (explain)

Radeon R9 Nano		512000 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 440000 (611%)

Texel Rate

The Radeon R9 Nano should be quite a bit (more or less 540%) faster with regards to AF than the Radeon HD 7770. (explain)

Radeon R9 Nano		256000 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 216000 (540%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 Nano is superior to the Radeon HD 7770, by a large margin. (explain)

Radeon R9 Nano		64000 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 48000 (300%)

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 max amount of data (measured in MB per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.