GeForce GTX 560 Ti 448 vs Radeon HD 4850 512MB

Intro

Compare all of that to the Radeon HD 4850 512MB, which comes with a core clock frequency of 625 MHz and a GDDR3 memory speed of 993 MHz. It also makes use of a 256-bit memory bus, and uses a 55 nm design. It features 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 512MB		110 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 100 Watts (91%)

Memory Bandwidth

The GeForce GTX 560 Ti 448, in theory, should be much faster than the Radeon HD 4850 512MB in general. (explain)

GeForce GTX 560 Ti 448		144000 MB/sec
Radeon HD 4850 512MB		63552 MB/sec
	Difference: 80448 (127%)

Texel Rate

The GeForce GTX 560 Ti 448 should be quite a bit (more or less 64%) more effective at AF than the Radeon HD 4850 512MB. (explain)

GeForce GTX 560 Ti 448		40992 Mtexels/sec
Radeon HD 4850 512MB		25000 Mtexels/sec
	Difference: 15992 (64%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 560 Ti 448 is the winner, by far. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
Radeon HD 4850 512MB		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 max amount of data (measured in megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's 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 processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.