GeForce GTX 1650 vs Radeon HD 4890 2GB

Intro

Compare those specs to the Radeon HD 4890 2GB, which comes with GPU core speed of 1000 MHz, and 2048 MB of GDDR5 RAM set to run at 975 MHz through a 256-bit bus. It also is made up of 800(160x5) Stream Processors, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1650		75 Watts
Radeon HD 4890 2GB		190 Watts
	Difference: 115 Watts (153%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 1650 should theoretically be a little bit better than the Radeon HD 4890 2GB overall. (explain)

GeForce GTX 1650		131072 MB/sec
Radeon HD 4890 2GB		124800 MB/sec
	Difference: 6272 (5%)

Texel Rate

The GeForce GTX 1650 is quite a bit (approximately 108%) faster with regards to texture filtering than the Radeon HD 4890 2GB. (explain)

GeForce GTX 1650		83160 Mtexels/sec
Radeon HD 4890 2GB		40000 Mtexels/sec
	Difference: 43160 (108%)

Pixel Rate

The GeForce GTX 1650 will be much (about 197%) more effective at FSAA than the Radeon HD 4890 2GB, and able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 1650		47520 Mpixels/sec
Radeon HD 4890 2GB		16000 Mpixels/sec
	Difference: 31520 (197%)

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 data (measured in MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total texture units by the core clock 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 can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.