GeForce 930M vs Radeon HD 4550 256MB

Intro

Compare all that to the Radeon HD 4550 256MB, which has a core clock frequency of 600 MHz and a DDR3 memory speed of 800 MHz. It also features a 64-bit bus, and uses a 55 nm design. It is made up of 80(16x5) SPUs, 8 TAUs, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce 930M should theoretically be a little bit better than the Radeon HD 4550 256MB overall. (explain)

GeForce 930M		14400 MB/sec
Radeon HD 4550 256MB		12800 MB/sec
	Difference: 1600 (13%)

Texel Rate

The GeForce 930M is much (about 364%) better at texture filtering than the Radeon HD 4550 256MB. (explain)

GeForce 930M		22272 Mtexels/sec
Radeon HD 4550 256MB		4800 Mtexels/sec
	Difference: 17472 (364%)

Pixel Rate

The GeForce 930M is quite a bit (about 209%) better at full screen anti-aliasing than the Radeon HD 4550 256MB, and capable of handling higher screen resolutions more effectively. (explain)

GeForce 930M		7424 Mpixels/sec
Radeon HD 4550 256MB		2400 Mpixels/sec
	Difference: 5024 (209%)

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 maximum amount of information (measured in megabytes per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the 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 can be processed in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better 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 most pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.