GeForce GTX 570 vs Radeon HD 4850 2GB

Intro

Compare those specs to the Radeon HD 4850 2GB, which comes with core clock speeds of 625 MHz on the GPU, and 993 MHz on the 2048 MB of GDDR4 RAM. It features 800(160x5) SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 2GB		110 Watts
GeForce GTX 570		219 Watts
	Difference: 109 Watts (99%)

Memory Bandwidth

Theoretically, the GeForce GTX 570 should be a lot faster than the Radeon HD 4850 2GB in general. (explain)

GeForce GTX 570		152000 MB/sec
Radeon HD 4850 2GB		63552 MB/sec
	Difference: 88448 (139%)

Texel Rate

The GeForce GTX 570 will be a lot (more or less 76%) faster with regards to texture filtering than the Radeon HD 4850 2GB. (explain)

GeForce GTX 570		43920 Mtexels/sec
Radeon HD 4850 2GB		25000 Mtexels/sec
	Difference: 18920 (76%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 570 is superior to the Radeon HD 4850 2GB, by a large margin. (explain)

GeForce GTX 570		29280 Mpixels/sec
Radeon HD 4850 2GB		10000 Mpixels/sec
	Difference: 19280 (193%)

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 largest amount of information (counted in MB per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units of the card 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 in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the clock 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 is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.