GeForce GTX 950M vs Radeon HD 4750

Intro

Compare all of that to the Radeon HD 4750, which comes with core clock speeds of 730 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs as well as 32 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M		55 Watts
Radeon HD 4750		75 Watts
	Difference: 20 Watts (36%)

Memory Bandwidth

The Radeon HD 4750, in theory, should be much faster than the GeForce GTX 950M overall. (explain)

Radeon HD 4750		51200 MB/sec
GeForce GTX 950M		32000 MB/sec
	Difference: 19200 (60%)

Texel Rate

The GeForce GTX 950M will be a lot (more or less 57%) better at texture filtering than the Radeon HD 4750. (explain)

GeForce GTX 950M		36560 Mtexels/sec
Radeon HD 4750		23360 Mtexels/sec
	Difference: 13200 (57%)

Pixel Rate

The GeForce GTX 950M should be much (approximately 25%) more effective at FSAA than the Radeon HD 4750, and also will be capable of handling higher resolutions better. (explain)

GeForce GTX 950M		14624 Mpixels/sec
Radeon HD 4750		11680 Mpixels/sec
	Difference: 2944 (25%)

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 largest amount of data (measured in megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the 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 most pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes 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 memory bandwidth is, the lower the potential to reach the maximum fill rate.