GeForce GTX 460 2GB vs Radeon HD 5670

Intro

Compare all of that to the Radeon HD 5670, which makes use of a 40 nm design. AMD has set the core frequency at 775 MHz. The GDDR5 memory runs at a frequency of 1000 MHz on this specific card. It features 400(80x5) SPUs along with 20 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce GTX 460 2GB		160 Watts
	Difference: 99 Watts (162%)

Memory Bandwidth

In theory, the GeForce GTX 460 2GB will be 80% quicker than the Radeon HD 5670 overall, because of its higher data rate. (explain)

GeForce GTX 460 2GB		115200 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 51200 (80%)

Texel Rate

The GeForce GTX 460 2GB is a lot (more or less 144%) faster with regards to anisotropic filtering than the Radeon HD 5670. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 22300 (144%)

Pixel Rate

The GeForce GTX 460 2GB will be a lot (about 248%) more effective at anti-aliasing than the Radeon HD 5670, and will be able to handle higher resolutions better. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 15400 (248%)

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 largest amount of data (measured in MB per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka 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, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.