Geforce GTX 770 vs Radeon HD 7790

Intro

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

Geforce GTX 770		7854 points
Radeon HD 7790		4330 points
	Difference: 3524 (81%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Geforce GTX 770		230 Watts
	Difference: 145 Watts (171%)

Memory Bandwidth

The Geforce GTX 770 should in theory perform a lot faster than the Radeon HD 7790 overall. (explain)

Geforce GTX 770		224384 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 128384 (134%)

Texel Rate

The Geforce GTX 770 will be quite a bit (approximately 139%) better at AF than the Radeon HD 7790. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 77888 (139%)

Pixel Rate

The Geforce GTX 770 should be much (approximately 109%) better at full screen anti-aliasing than the Radeon HD 7790, and will be able to handle higher resolutions while still performing well. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 17472 (109%)

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 (in units of megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.