GeForce GTX 950 vs Radeon HD 4830 512MB

Intro

Compare all that to the Radeon HD 4830 512MB, which comes with a core clock speed of 575 MHz and a GDDR3 memory speed of 900 MHz. It also uses a 256-bit bus, and uses a 55 nm design. It features 640(128x5) SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950		90 Watts
Radeon HD 4830 512MB		95 Watts
	Difference: 5 Watts (6%)

Memory Bandwidth

The GeForce GTX 950 should theoretically perform a lot faster than the Radeon HD 4830 512MB in general. (explain)

GeForce GTX 950		105728 MB/sec
Radeon HD 4830 512MB		57600 MB/sec
	Difference: 48128 (84%)

Texel Rate

The GeForce GTX 950 will be much (about 167%) better at anisotropic filtering than the Radeon HD 4830 512MB. (explain)

GeForce GTX 950		49152 Mtexels/sec
Radeon HD 4830 512MB		18400 Mtexels/sec
	Difference: 30752 (167%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 950 is the winner, and very much so. (explain)

GeForce GTX 950		32768 Mpixels/sec
Radeon HD 4830 512MB		9200 Mpixels/sec
	Difference: 23568 (256%)

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 largest amount of data (counted in MB per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the video 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 chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 - the lower the bandwidth is, the lower the potential to reach the max fill rate.