GeForce GTX 650 vs Radeon HD 5670

Intro

Compare that to the Radeon HD 5670, which features a clock frequency of 775 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It is made up of 400(80x5) SPUs, 20 Texture Address Units, and 8 Raster Operation Units.

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

The GeForce GTX 650, in theory, should be quite a bit faster than the Radeon HD 5670 in general. (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%) more effective 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 a high resolution is important to you, then the GeForce GTX 650 is a better choice, and very much so. (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: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it 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 AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. 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 quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.