GeForce GTX 950M vs Radeon HD 4550 512MB

Intro

Compare those specs to the Radeon HD 4550 512MB, which comes with a clock frequency of 600 MHz and a GDDR3 memory speed of 800 MHz. It also features a 64-bit memory bus, and uses a 55 nm design. It is comprised of 80(16x5) SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 512MB		25 Watts
GeForce GTX 950M		55 Watts
	Difference: 30 Watts (120%)

Memory Bandwidth

The GeForce GTX 950M should theoretically perform a lot faster than the Radeon HD 4550 512MB overall. (explain)

GeForce GTX 950M		32000 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 19200 (150%)

Texel Rate

The GeForce GTX 950M should be much (approximately 662%) more effective at texture filtering than the Radeon HD 4550 512MB. (explain)

GeForce GTX 950M		36560 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 31760 (662%)

Pixel Rate

The GeForce GTX 950M should be quite a bit (about 509%) faster with regards to anti-aliasing than the Radeon HD 4550 512MB, and capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 950M		14624 Mpixels/sec
Radeon HD 4550 512MB		2400 Mpixels/sec
	Difference: 12224 (509%)

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 information (counted in MB 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 DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total number of texture units 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 processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.