GeForce GTX 1630 vs Radeon HD 4870 X2

Intro

Compare that to the Radeon HD 4870 X2, which makes use of a 55 nm design. AMD has set the core frequency at 750 MHz. The GDDR5 RAM runs at a speed of 900 MHz on this model. It features 800(160x5) SPUs as well as 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 X2		350 Watts
	Difference: 275 Watts (367%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4870 X2 is 134% faster than the GeForce GTX 1630 in general, due to its higher data rate. (explain)

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

Texel Rate

The Radeon HD 4870 X2 is a bit (approximately 8%) better at texture filtering 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 a little bit (approximately 16%) more effective at full screen anti-aliasing than the Radeon HD 4870 X2, and also capable of handling higher resolutions without slowing down too much. (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 largest amount of information (counted in megabytes per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

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