GeForce GT 1030 vs Radeon HD 4870 X2

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 1030		30 Watts
Radeon HD 4870 X2		350 Watts
	Difference: 320 Watts (1067%)

Memory Bandwidth

In theory, the Radeon HD 4870 X2 will be 369% quicker than the GeForce GT 1030 overall, due to its greater bandwidth. (explain)

Radeon HD 4870 X2		230400 MB/sec
GeForce GT 1030		49152 MB/sec
	Difference: 181248 (369%)

Texel Rate

The Radeon HD 4870 X2 should be a lot (approximately 48%) better at texture filtering than the GeForce GT 1030. (explain)

Radeon HD 4870 X2		60000 Mtexels/sec
GeForce GT 1030		40480 Mtexels/sec
	Difference: 19520 (48%)

Pixel Rate

The Radeon HD 4870 X2 will be a little bit (about 19%) faster with regards to FSAA than the GeForce GT 1030, and will be capable of handling higher screen resolutions while still performing well. (explain)

Radeon HD 4870 X2		24000 Mpixels/sec
GeForce GT 1030		20240 Mpixels/sec
	Difference: 3760 (19%)

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 max amount of information (in units of megabytes per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics 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 maximum amount of pixels the video card can possibly record to the 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 clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.