GeForce GTX 1630 vs Radeon HD 4870 X2

Intro

Compare all that to the Radeon HD 4870 X2, which features a GPU core clock speed of 750 MHz, and 1024 MB of GDDR5 RAM running at 900 MHz through a 256-bit bus. It also is comprised of 800(160x5) Stream Processors, 40 Texture Address Units, 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

Performance-wise, the Radeon HD 4870 X2 should theoretically be much superior to 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 just a bit (more or less 8%) faster with regards to 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

If running with a high screen resolution is important to you, then the GeForce GTX 1630 is a better choice, but it probably won't make a huge difference. (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: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.