GeForce GTX 1650 vs Radeon HD 7870

Intro

Compare all of that to the Radeon HD 7870, which has GPU core speed of 1000 MHz, and 2048 MB of GDDR5 memory running at 1200 MHz through a 256-bit bus. It also is comprised of 1280 SPUs, 80 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1650		75 Watts
Radeon HD 7870		175 Watts
	Difference: 100 Watts (133%)

Memory Bandwidth

In theory, the Radeon HD 7870 will be 17% faster than the GeForce GTX 1650 overall, due to its higher bandwidth. (explain)

Radeon HD 7870		153600 MB/sec
GeForce GTX 1650		131072 MB/sec
	Difference: 22528 (17%)

Texel Rate

The GeForce GTX 1650 should be a little bit (about 4%) faster with regards to texture filtering than the Radeon HD 7870. (explain)

GeForce GTX 1650		83160 Mtexels/sec
Radeon HD 7870		80000 Mtexels/sec
	Difference: 3160 (4%)

Pixel Rate

The GeForce GTX 1650 should be quite a bit (more or less 49%) more effective at FSAA than the Radeon HD 7870, and should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 1650		47520 Mpixels/sec
Radeon HD 7870		32000 Mpixels/sec
	Difference: 15520 (49%)

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 largest amount of information (counted in megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.