GeForce GTX 1650 vs Radeon HD 4870 512MB

Intro

Compare those specs to the Radeon HD 4870 512MB, which uses a 55 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 memory works at a speed of 900 MHz on this model. 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 GTX 1650		75 Watts
Radeon HD 4870 512MB		150 Watts
	Difference: 75 Watts (100%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 1650 should be 14% faster than the Radeon HD 4870 512MB overall, due to its higher data rate. (explain)

GeForce GTX 1650		131072 MB/sec
Radeon HD 4870 512MB		115200 MB/sec
	Difference: 15872 (14%)

Texel Rate

The GeForce GTX 1650 will be quite a bit (more or less 177%) more effective at AF than the Radeon HD 4870 512MB. (explain)

GeForce GTX 1650		83160 Mtexels/sec
Radeon HD 4870 512MB		30000 Mtexels/sec
	Difference: 53160 (177%)

Pixel Rate

The GeForce GTX 1650 is quite a bit (approximately 296%) faster with regards to anti-aliasing than the Radeon HD 4870 512MB, and will be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 1650		47520 Mpixels/sec
Radeon HD 4870 512MB		12000 Mpixels/sec
	Difference: 35520 (296%)

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 max amount of data (in units of MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the 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 amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure 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 filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.