Radeon HD 7790 vs Radeon R9 Nano

Intro

Compare all of that to the Radeon R9 Nano, which features core speeds of 1000 MHz on the GPU, and 500 MHz on the 4096 MB of HBM RAM. It features 4096 SPUs as well as 256 TAUs 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 7790		4330 points
	Difference: 10588 (245%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Radeon R9 Nano		175 Watts
	Difference: 90 Watts (106%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 Nano should be 433% faster than the Radeon HD 7790 in general, because of its higher data rate. (explain)

Radeon R9 Nano		512000 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 416000 (433%)

Texel Rate

The Radeon R9 Nano should be much (about 357%) better at texture filtering than the Radeon HD 7790. (explain)

Radeon R9 Nano		256000 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 200000 (357%)

Pixel Rate

The Radeon R9 Nano will be a lot (more or less 300%) more effective at FSAA than the Radeon HD 7790, and able to handle higher resolutions more effectively. (explain)

Radeon R9 Nano		64000 Mpixels/sec
Radeon HD 7790		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 largest amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, 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 could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core 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 also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.