GeForce GTX 950 vs Radeon HD 5830

Intro

Compare those specs to the Radeon HD 5830, which has core clock speeds of 800 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 1120(224x5) SPUs as well as 56 Texture Address Units 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 5830		175 Watts
	Difference: 85 Watts (94%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5830 should in theory be much better than the GeForce GTX 950 overall. (explain)

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

Texel Rate

The GeForce GTX 950 should be just a bit (approximately 10%) faster with regards to 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

If running with a high screen resolution is important to you, then the GeForce GTX 950 is superior to the Radeon HD 5830, by a large margin. (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 maximum amount of information (measured in megabytes per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed 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 higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.