GeForce 825M vs Radeon HD 5550

Intro

Compare those specifications to the Radeon HD 5550, which has core speeds of 550 MHz on the GPU, and 400 MHz on the 512 MB of DDR2 memory. It features 320(64x5) SPUs along with 16 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 825M should theoretically perform a little bit faster than the Radeon HD 5550 overall. (explain)

GeForce 825M		14400 MB/sec
Radeon HD 5550		12800 MB/sec
	Difference: 1600 (13%)

Texel Rate

The GeForce 825M is a lot (more or less 55%) faster with regards to texture filtering than the Radeon HD 5550. (explain)

GeForce 825M		13600 Mtexels/sec
Radeon HD 5550		8800 Mtexels/sec
	Difference: 4800 (55%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 825M is the winner, and very much so. (explain)

GeForce 825M		6800 Mpixels/sec
Radeon HD 5550		4400 Mpixels/sec
	Difference: 2400 (55%)

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 moved across the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 in one second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.