GeForce 930M vs Radeon HD 4550 256MB

Intro

Compare those specs to the Radeon HD 4550 256MB, which has GPU clock speed of 600 MHz, and 256 MB of DDR3 memory set to run at 800 MHz through a 64-bit bus. It also features 80(16x5) Stream Processors, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce 930M should in theory 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 should be much (about 364%) faster with regards to anisotropic 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 a lot (approximately 209%) more effective at full screen anti-aliasing than the Radeon HD 4550 256MB, and should be able to handle higher resolutions without losing too much performance. (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: Bandwidth is the maximum amount of data (in units of MB per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics 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 the video card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.