GeForce GTX 950M vs Radeon HD 4730

Intro

Compare those specifications to the Radeon HD 4730, which comes with core speeds of 700 MHz on the GPU, and 900 MHz on the 512 MB of GDDR5 RAM. It features 640(128x5) SPUs as well as 32 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M		55 Watts
Radeon HD 4730		140 Watts
	Difference: 85 Watts (155%)

Memory Bandwidth

Theoretically, the Radeon HD 4730 should perform much faster than the GeForce GTX 950M overall. (explain)

Radeon HD 4730		57600 MB/sec
GeForce GTX 950M		32000 MB/sec
	Difference: 25600 (80%)

Texel Rate

The GeForce GTX 950M is much (about 63%) more effective at AF than the Radeon HD 4730. (explain)

GeForce GTX 950M		36560 Mtexels/sec
Radeon HD 4730		22400 Mtexels/sec
	Difference: 14160 (63%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 950M is superior to the Radeon HD 4730, by a large margin. (explain)

GeForce GTX 950M		14624 Mpixels/sec
Radeon HD 4730		5600 Mpixels/sec
	Difference: 9024 (161%)

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 information (in units of megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the 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 graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.