GeForce 940M vs Radeon HD 4550 256MB

Intro

Compare those specs to the Radeon HD 4550 256MB, which comes with core speeds of 600 MHz on the GPU, and 800 MHz on the 256 MB of DDR3 RAM. It features 80(16x5) SPUs along with 8 TAUs and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce 940M should be 25% quicker than the Radeon HD 4550 256MB in general, because of its higher data rate. (explain)

GeForce 940M		16000 MB/sec
Radeon HD 4550 256MB		12800 MB/sec
	Difference: 3200 (25%)

Texel Rate

The GeForce 940M should be quite a bit (about 436%) better at texture filtering than the Radeon HD 4550 256MB. (explain)

GeForce 940M		25728 Mtexels/sec
Radeon HD 4550 256MB		4800 Mtexels/sec
	Difference: 20928 (436%)

Pixel Rate

The GeForce 940M will be much (approximately 257%) better 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 940M		8576 Mpixels/sec
Radeon HD 4550 256MB		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: Bandwidth is the max amount of data (counted in MB per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 processed per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.