GeForce GTX 950 vs Radeon HD 4790

Intro

Compare all of that to the Radeon HD 4790, which has a GPU core clock speed of 600 MHz, and 512 MB of GDDR5 memory set to run at 800 MHz through a 256-bit bus. It also is made up of 640(128x5) Stream Processors, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 950, in theory, should perform a small bit faster than the Radeon HD 4790 in general. (explain)

GeForce GTX 950		105728 MB/sec
Radeon HD 4790		102400 MB/sec
	Difference: 3328 (3%)

Texel Rate

The GeForce GTX 950 should be a lot (approximately 156%) more effective at AF than the Radeon HD 4790. (explain)

GeForce GTX 950		49152 Mtexels/sec
Radeon HD 4790		19200 Mtexels/sec
	Difference: 29952 (156%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 950 is superior to the Radeon HD 4790, by far. (explain)

GeForce GTX 950		32768 Mpixels/sec
Radeon HD 4790		9600 Mpixels/sec
	Difference: 23168 (241%)

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 moved over the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 are processed per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.