GeForce GTX 460 1GB vs Radeon HD 6570 (OEM) 2GB

Intro

Compare those specs to the Radeon HD 6570 (OEM) 2GB, which features a GPU core clock speed of 650 MHz, and 1024 MB of GDDR5 RAM running at 1000 MHz through a 128-bit bus. It also is made up of 480 Stream Processors, 24 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB		50 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 110 Watts (220%)

Memory Bandwidth

Theoretically, the GeForce GTX 460 1GB should perform quite a bit faster than the Radeon HD 6570 (OEM) 2GB in general. (explain)

GeForce GTX 460 1GB		115200 MB/sec
Radeon HD 6570 (OEM) 2GB		64000 MB/sec
	Difference: 51200 (80%)

Texel Rate

The GeForce GTX 460 1GB should be quite a bit (about 142%) better at AF than the Radeon HD 6570 (OEM) 2GB. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
Radeon HD 6570 (OEM) 2GB		15600 Mtexels/sec
	Difference: 22200 (142%)

Pixel Rate

The GeForce GTX 460 1GB should be a lot (about 315%) more effective at full screen anti-aliasing than the Radeon HD 6570 (OEM) 2GB, and capable of handling higher resolutions better. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
Radeon HD 6570 (OEM) 2GB		5200 Mpixels/sec
	Difference: 16400 (315%)

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 data (counted in megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units 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 also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.