GeForce GTX 970 vs Radeon HD 7790

Intro

Compare those specifications to the Radeon HD 7790, which has a clock speed of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It is made up of 896 SPUs, 56 TAUs, and 16 Raster Operation 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

GeForce GTX 970		10867 points
Radeon HD 7790		4330 points
	Difference: 6537 (151%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
GeForce GTX 970		145 Watts
	Difference: 60 Watts (71%)

Memory Bandwidth

The GeForce GTX 970, in theory, should be much faster than the Radeon HD 7790 overall. (explain)

GeForce GTX 970		224000 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 128000 (133%)

Texel Rate

The GeForce GTX 970 is quite a bit (about 95%) more effective at anisotropic filtering than the Radeon HD 7790. (explain)

GeForce GTX 970		109200 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 53200 (95%)

Pixel Rate

The GeForce GTX 970 is much (about 320%) faster with regards to FSAA than the Radeon HD 7790, and will be able to handle higher resolutions better. (explain)

GeForce GTX 970		67200 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 51200 (320%)

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 max amount of data (counted in MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's 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 amount of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.