GeForce GTX 650 vs Radeon HD 5670

Intro

Compare that to the Radeon HD 5670, which has a GPU core clock speed of 775 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also is made up of 400(80x5) Stream Processors, 20 Texture Address Units, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce GTX 650		64 Watts
	Difference: 3 Watts (5%)

Memory Bandwidth

In theory, the GeForce GTX 650 should be 25% faster than the Radeon HD 5670 in general, due to its higher bandwidth. (explain)

GeForce GTX 650		80000 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 16000 (25%)

Texel Rate

The GeForce GTX 650 is much (more or less 118%) better at anisotropic filtering than the Radeon HD 5670. (explain)

GeForce GTX 650		33856 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 18356 (118%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 650 is a better choice, by a large margin. (explain)

GeForce GTX 650		16928 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 10728 (173%)

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 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 bus width by its memory speed. In the case of DDR type 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 AA, High Dynamic Range and higher screen resolutions.

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

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