Radeon HD 7970 vs Radeon R9 Nano

Intro

Compare those specs to the Radeon R9 Nano, which has clock speeds of 1000 MHz on the GPU, and 500 MHz on the 4096 MB of HBM RAM. It features 4096 SPUs along with 256 Texture Address Units and 64 Rasterization Operator Units.

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 7970		8225 points
	Difference: 6693 (81%)

Ethereum Mining Hash Rate

Radeon R9 Nano		30 Mh/s
Radeon HD 7970		21 Mh/s
	Difference: 9 (43%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 Nano		175 Watts
Radeon HD 7970		250 Watts
	Difference: 75 Watts (43%)

Memory Bandwidth

Performance-wise, the Radeon R9 Nano should theoretically be a lot better than the Radeon HD 7970 overall. (explain)

Radeon R9 Nano		512000 MB/sec
Radeon HD 7970		264000 MB/sec
	Difference: 248000 (94%)

Texel Rate

The Radeon R9 Nano should be much (about 116%) better at anisotropic filtering than the Radeon HD 7970. (explain)

Radeon R9 Nano		256000 Mtexels/sec
Radeon HD 7970		118400 Mtexels/sec
	Difference: 137600 (116%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 Nano is superior to the Radeon HD 7970, by a large margin. (explain)

Radeon R9 Nano		64000 Mpixels/sec
Radeon HD 7970		29600 Mpixels/sec
	Difference: 34400 (116%)

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 transferred across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses 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 amount of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock 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, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.