GeForce GTX 460 (OEM) vs Radeon HD 7790

Intro

Compare those specifications to the Radeon HD 7790, which uses a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 RAM is set to run at a speed of 1500 MHz on this card. It features 896 SPUs along with 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
GeForce GTX 460 (OEM)		150 Watts
	Difference: 65 Watts (76%)

Memory Bandwidth

The GeForce GTX 460 (OEM) should theoretically perform a small bit faster than the Radeon HD 7790 in general. (explain)

GeForce GTX 460 (OEM)		108800 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 12800 (13%)

Texel Rate

The Radeon HD 7790 should be much (approximately 54%) better at AF than the GeForce GTX 460 (OEM). (explain)

Radeon HD 7790		56000 Mtexels/sec
GeForce GTX 460 (OEM)		36400 Mtexels/sec
	Difference: 19600 (54%)

Pixel Rate

The GeForce GTX 460 (OEM) should be quite a bit (approximately 30%) more effective at full screen anti-aliasing than the Radeon HD 7790, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 4800 (30%)

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 information (counted in megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.