GeForce GTX 560 vs Radeon HD 4650 1GB

Intro

Compare those specs to the Radeon HD 4650 1GB, which comes with core speeds of 600 MHz on the GPU, and 700 MHz on the 1024 MB of GDDR3 memory. It features 320(64x5) SPUs as well as 32 TAUs and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 1GB		55 Watts
GeForce GTX 560		150 Watts
	Difference: 95 Watts (173%)

Memory Bandwidth

The GeForce GTX 560 should theoretically be much faster than the Radeon HD 4650 1GB in general. (explain)

GeForce GTX 560		128128 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 105728 (472%)

Texel Rate

The GeForce GTX 560 is much (more or less 136%) better at AF than the Radeon HD 4650 1GB. (explain)

GeForce GTX 560		45360 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 26160 (136%)

Pixel Rate

The GeForce GTX 560 will be much (about 440%) faster with regards to FSAA than the Radeon HD 4650 1GB, and should be capable of handling higher resolutions better. (explain)

GeForce GTX 560		25920 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 21120 (440%)

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 max amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. 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 rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.