GeForce GTX 980M vs Radeon HD 7790

Intro

Compare all of that to the Radeon HD 7790, which comes with core clock speeds of 1000 MHz on the GPU, and 1500 MHz on the 1024 MB of GDDR5 RAM. It features 896 SPUs along with 56 Texture Address Units and 16 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

GeForce GTX 980M		9476 points
Radeon HD 7790		4330 points
	Difference: 5146 (119%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
GeForce GTX 980M		100 Watts
	Difference: 15 Watts (18%)

Memory Bandwidth

Performance-wise, the GeForce GTX 980M should in theory be much better than the Radeon HD 7790 in general. (explain)

GeForce GTX 980M		128000 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 32000 (33%)

Texel Rate

The GeForce GTX 980M will be a lot (approximately 78%) better at anisotropic filtering than the Radeon HD 7790. (explain)

GeForce GTX 980M		99648 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 43648 (78%)

Pixel Rate

The GeForce GTX 980M is a lot (about 315%) faster with regards to anti-aliasing than the Radeon HD 7790, and also should be capable of handling higher resolutions better. (explain)

GeForce GTX 980M		66432 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 50432 (315%)

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 maximum amount of data (measured in MB per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 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, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.