GeForce 920M vs Radeon HD 4550 256MB

Intro

Compare all that to the Radeon HD 4550 256MB, which has core clock speeds of 600 MHz on the GPU, and 800 MHz on the 256 MB of DDR3 memory. It features 80(16x5) SPUs as well as 8 TAUs and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce 920M should be 13% quicker than the Radeon HD 4550 256MB in general, due to its greater data rate. (explain)

GeForce 920M		14400 MB/sec
Radeon HD 4550 256MB		12800 MB/sec
	Difference: 1600 (13%)

Texel Rate

The GeForce 920M will be quite a bit (about 536%) faster with regards to AF than the Radeon HD 4550 256MB. (explain)

GeForce 920M		30528 Mtexels/sec
Radeon HD 4550 256MB		4800 Mtexels/sec
	Difference: 25728 (536%)

Pixel Rate

The GeForce 920M will be quite a bit (approximately 218%) more effective at full screen anti-aliasing than the Radeon HD 4550 256MB, and able to handle higher screen resolutions without slowing down too much. (explain)

GeForce 920M		7632 Mpixels/sec
Radeon HD 4550 256MB		2400 Mpixels/sec
	Difference: 5232 (218%)

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 information (in units of MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR 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 amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. 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 of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.