GeForce GTX 260 Core 216 vs Radeon HD 7790

Intro

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

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
GeForce GTX 260 Core 216		202 Watts
	Difference: 117 Watts (138%)

Memory Bandwidth

The GeForce GTX 260 Core 216 should theoretically perform a little bit faster than the Radeon HD 7790 overall. (explain)

GeForce GTX 260 Core 216		111888 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 15888 (17%)

Texel Rate

The Radeon HD 7790 is a lot (approximately 35%) faster with regards to anisotropic filtering than the GeForce GTX 260 Core 216. (explain)

Radeon HD 7790		56000 Mtexels/sec
GeForce GTX 260 Core 216		41472 Mtexels/sec
	Difference: 14528 (35%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 260 Core 216 is the winner, but it probably won't make a huge difference. (explain)

GeForce GTX 260 Core 216		16128 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 128 (1%)

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 information (in units of megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends 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 max fill rate.