GeForce 810M vs Radeon HD 4650 512MB

Intro

Compare those specifications to the Radeon HD 4650 512MB, which features clock speeds of 600 MHz on the GPU, and 500 MHz on the 512 MB of DDR2 RAM. It features 320(64x5) SPUs along with 32 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M		15 Watts
Radeon HD 4650 512MB		55 Watts
	Difference: 40 Watts (267%)

Memory Bandwidth

The Radeon HD 4650 512MB should theoretically be just a bit faster than the GeForce 810M overall. (explain)

Radeon HD 4650 512MB		16000 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 1600 (11%)

Texel Rate

The Radeon HD 4650 512MB should be quite a bit (about 225%) faster with regards to anisotropic filtering than the GeForce 810M. (explain)

Radeon HD 4650 512MB		19200 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 13296 (225%)

Pixel Rate

The Radeon HD 4650 512MB will be a lot (more or less 63%) better at FSAA than the GeForce 810M, and should be capable of handling higher resolutions more effectively. (explain)

Radeon HD 4650 512MB		4800 Mpixels/sec
GeForce 810M		2952 Mpixels/sec
	Difference: 1848 (63%)

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 data (measured in MB per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the video 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 number of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few 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.