Radeon HD 7970 vs Radeon R9 Nano

Intro

Compare that to the Radeon R9 Nano, which has a GPU core clock speed of 1000 MHz, and 4096 MB of HBM memory set to run at 500 MHz through a 4096-bit bus. It also features 4096 SPUs, 256 TAUs, 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 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

In theory, the Radeon R9 Nano should perform much faster than the Radeon HD 7970 in general. (explain)

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

Texel Rate

The Radeon R9 Nano will be much (more or less 116%) more effective at texture 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 using a high resolution is important to you, then the Radeon R9 Nano is a better choice, and very much so. (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: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 once 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.