GeForce GTX 1630 vs Radeon HD 4870 512MB

Intro

Compare that to the Radeon HD 4870 512MB, which comes with core speeds of 750 MHz on the GPU, and 900 MHz on the 512 MB of GDDR5 memory. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1630		75 Watts
Radeon HD 4870 512MB		150 Watts
	Difference: 75 Watts (100%)

Memory Bandwidth

As far as performance goes, the Radeon HD 4870 512MB should in theory be a small bit better than the GeForce GTX 1630 overall. (explain)

Radeon HD 4870 512MB		115200 MB/sec
GeForce GTX 1630		98304 MB/sec
	Difference: 16896 (17%)

Texel Rate

The GeForce GTX 1630 is a lot (more or less 86%) faster with regards to anisotropic filtering than the Radeon HD 4870 512MB. (explain)

GeForce GTX 1630		55680 Mtexels/sec
Radeon HD 4870 512MB		30000 Mtexels/sec
	Difference: 25680 (86%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 1630 is a better choice, and very much so. (explain)

GeForce GTX 1630		27840 Mpixels/sec
Radeon HD 4870 512MB		12000 Mpixels/sec
	Difference: 15840 (132%)

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 (measured in megabytes per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a 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 number is worked out by multiplying the amount of Render Output Units by the the card's 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 also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.