GeForce GTX 570 vs Radeon HD 4670 1GB

Intro

Compare those specifications to the Radeon HD 4670 1GB, which comes with clock speeds of 750 MHz on the GPU, and 1100 MHz on the 1024 MB of GDDR4/GDDR3/DDR3/DDR2 RAM. It features 320(64x5) SPUs as well as 32 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 1GB		70 Watts
GeForce GTX 570		219 Watts
	Difference: 149 Watts (213%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 570 will be 332% faster than the Radeon HD 4670 1GB overall, due to its greater bandwidth. (explain)

GeForce GTX 570		152000 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 116800 (332%)

Texel Rate

The GeForce GTX 570 will be a lot (more or less 83%) more effective at anisotropic filtering than the Radeon HD 4670 1GB. (explain)

GeForce GTX 570		43920 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 19920 (83%)

Pixel Rate

The GeForce GTX 570 should be a lot (about 388%) faster with regards to anti-aliasing than the Radeon HD 4670 1GB, and also able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 570		29280 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 23280 (388%)

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 (counted in megabytes per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 texture map elements (texels) that are processed per second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, 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 maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's 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 output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.