GeForce GTX 1630 vs Radeon HD 4870 X2

Intro

Compare those specifications to the Radeon HD 4870 X2, which has a GPU core clock speed of 750 MHz, and 1024 MB of GDDR5 memory set to run at 900 MHz through a 256-bit bus. It also features 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1630		75 Watts
Radeon HD 4870 X2		350 Watts
	Difference: 275 Watts (367%)

Memory Bandwidth

As far as performance goes, the Radeon HD 4870 X2 should in theory be quite a bit better than the GeForce GTX 1630 in general. (explain)

Radeon HD 4870 X2		230400 MB/sec
GeForce GTX 1630		98304 MB/sec
	Difference: 132096 (134%)

Texel Rate

The Radeon HD 4870 X2 will be a small bit (about 8%) faster with regards to AF than the GeForce GTX 1630. (explain)

Radeon HD 4870 X2		60000 Mtexels/sec
GeForce GTX 1630		55680 Mtexels/sec
	Difference: 4320 (8%)

Pixel Rate

The GeForce GTX 1630 will be just a bit (more or less 16%) better at AA than the Radeon HD 4870 X2, and also will be capable of handling higher screen resolutions better. (explain)

GeForce GTX 1630		27840 Mpixels/sec
Radeon HD 4870 X2		24000 Mpixels/sec
	Difference: 3840 (16%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.