GeForce GT 1030 vs Radeon HD 4890 2GB

Intro

Compare those specs to the Radeon HD 4890 2GB, which features clock speeds of 1000 MHz on the GPU, and 975 MHz on the 2048 MB of GDDR5 RAM. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 1030		30 Watts
Radeon HD 4890 2GB		190 Watts
	Difference: 160 Watts (533%)

Memory Bandwidth

Performance-wise, the Radeon HD 4890 2GB should theoretically be much better than the GeForce GT 1030 in general. (explain)

Radeon HD 4890 2GB		124800 MB/sec
GeForce GT 1030		49152 MB/sec
	Difference: 75648 (154%)

Texel Rate

The GeForce GT 1030 should be a small bit (more or less 1%) faster with regards to AF than the Radeon HD 4890 2GB. (explain)

GeForce GT 1030		40480 Mtexels/sec
Radeon HD 4890 2GB		40000 Mtexels/sec
	Difference: 480 (1%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GT 1030 is a better choice, by a large margin. (explain)

GeForce GT 1030		20240 Mpixels/sec
Radeon HD 4890 2GB		16000 Mpixels/sec
	Difference: 4240 (27%)

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 maximum amount of information (in units of megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it 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 AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units 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 fill rate also depends 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.