GeForce GTX 950M vs Radeon HD 4830 1GB

Intro

Compare those specs to the Radeon HD 4830 1GB, which has a clock frequency of 575 MHz and a GDDR4 memory speed of 900 MHz. It also makes use of a 256-bit bus, and makes use of a 55 nm design. It is comprised of 640(128x5) SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M		55 Watts
Radeon HD 4830 1GB		95 Watts
	Difference: 40 Watts (73%)

Memory Bandwidth

Performance-wise, the Radeon HD 4830 1GB should theoretically be a lot better than the GeForce GTX 950M overall. (explain)

Radeon HD 4830 1GB		57600 MB/sec
GeForce GTX 950M		32000 MB/sec
	Difference: 25600 (80%)

Texel Rate

The GeForce GTX 950M should be much (approximately 99%) better at anisotropic filtering than the Radeon HD 4830 1GB. (explain)

GeForce GTX 950M		36560 Mtexels/sec
Radeon HD 4830 1GB		18400 Mtexels/sec
	Difference: 18160 (99%)

Pixel Rate

The GeForce GTX 950M is quite a bit (more or less 59%) faster with regards to full screen anti-aliasing than the Radeon HD 4830 1GB, and also should be capable of handling higher screen resolutions better. (explain)

GeForce GTX 950M		14624 Mpixels/sec
Radeon HD 4830 1GB		9200 Mpixels/sec
	Difference: 5424 (59%)

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 maximum amount of data (measured in MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that are applied per second. This figure is worked out 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.