GeForce GTX 950 vs Radeon HD 5830

Intro

Compare that to the Radeon HD 5830, which features a clock frequency of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 256-bit bus, and makes use of a 40 nm design. It is comprised of 1120(224x5) SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950		90 Watts
Radeon HD 5830		175 Watts
	Difference: 85 Watts (94%)

Memory Bandwidth

The Radeon HD 5830, in theory, should be quite a bit faster than the GeForce GTX 950 in general. (explain)

Radeon HD 5830		128000 MB/sec
GeForce GTX 950		105728 MB/sec
	Difference: 22272 (21%)

Texel Rate

The GeForce GTX 950 will be just a bit (more or less 10%) more effective at texture filtering than the Radeon HD 5830. (explain)

GeForce GTX 950		49152 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 4352 (10%)

Pixel Rate

The GeForce GTX 950 should be a lot (approximately 156%) better at anti-aliasing than the Radeon HD 5830, and should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 950		32768 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 19968 (156%)

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 information (in units of megabytes per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics 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 maximum number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.