GeForce GT 1030 vs Radeon HD 4890 1GB

Intro

Compare those specifications to the Radeon HD 4890 1GB, which has a clock speed of 1000 MHz and a GDDR5 memory speed of 975 MHz. It also makes use of a 256-bit memory bus, and makes use of a 55 nm design. It features 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 1030		30 Watts
Radeon HD 4890 1GB		190 Watts
	Difference: 160 Watts (533%)

Memory Bandwidth

Performance-wise, the Radeon HD 4890 1GB should in theory be a lot better than the GeForce GT 1030 in general. (explain)

Radeon HD 4890 1GB		124800 MB/sec
GeForce GT 1030		49152 MB/sec
	Difference: 75648 (154%)

Texel Rate

The GeForce GT 1030 will be a small bit (more or less 1%) better at anisotropic filtering than the Radeon HD 4890 1GB. (explain)

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

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GT 1030 is a better choice, and very much so. (explain)

GeForce GT 1030		20240 Mpixels/sec
Radeon HD 4890 1GB		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: Bandwidth is the largest amount of data (measured in MB per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the 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 the video card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.