GeForce GT 1030 vs Radeon HD 4790

Intro

Compare those specs to the Radeon HD 4790, which makes use of a 55 nm design. AMD has set the core frequency at 600 MHz. The GDDR5 memory works at a frequency of 800 MHz on this card. It features 640(128x5) SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 4790 is 108% faster than the GeForce GT 1030 overall, because of its greater data rate. (explain)

Radeon HD 4790		102400 MB/sec
GeForce GT 1030		49152 MB/sec
	Difference: 53248 (108%)

Texel Rate

The GeForce GT 1030 will be much (about 111%) more effective at anisotropic filtering than the Radeon HD 4790. (explain)

GeForce GT 1030		40480 Mtexels/sec
Radeon HD 4790		19200 Mtexels/sec
	Difference: 21280 (111%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GT 1030 is the winner, by far. (explain)

GeForce GT 1030		20240 Mpixels/sec
Radeon HD 4790		9600 Mpixels/sec
	Difference: 10640 (111%)

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: Memory bandwidth is the max amount of information (in units of MB per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core 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 quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.