GeForce 940M vs Radeon HD 4550 512MB

Intro

Compare that to the Radeon HD 4550 512MB, which has core speeds of 600 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 memory. It features 80(16x5) SPUs along with 8 TAUs and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce 940M is 25% faster than the Radeon HD 4550 512MB in general, because of its higher data rate. (explain)

GeForce 940M		16000 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 3200 (25%)

Texel Rate

The GeForce 940M will be a lot (more or less 436%) faster with regards to anisotropic filtering than the Radeon HD 4550 512MB. (explain)

GeForce 940M		25728 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 20928 (436%)

Pixel Rate

The GeForce 940M will be a lot (approximately 257%) faster with regards to anti-aliasing than the Radeon HD 4550 512MB, and also should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce 940M		8576 Mpixels/sec
Radeon HD 4550 512MB		2400 Mpixels/sec
	Difference: 6176 (257%)

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 data (in units of megabytes per second) that can be transported over the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 number of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total number of texture units 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 applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to 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 max fill rate.