GeForce RTX 3080 12 GB vs Radeon HD 4850 X2 512MB

Intro

Compare that to the Radeon HD 4850 X2 512MB, which makes use of a 55 nm design. AMD has clocked the core frequency at 625 MHz. The GDDR3 RAM is set to run at a frequency of 993 MHz on this particular card. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 X2 512MB		250 Watts
GeForce RTX 3080 12 GB		350 Watts
	Difference: 100 Watts (40%)

Memory Bandwidth

As far as performance goes, the GeForce RTX 3080 12 GB should theoretically be a lot superior to the Radeon HD 4850 X2 512MB overall. (explain)

GeForce RTX 3080 12 GB		934298 MB/sec
Radeon HD 4850 X2 512MB		127104 MB/sec
	Difference: 807194 (635%)

Texel Rate

The GeForce RTX 3080 12 GB is much (more or less 606%) more effective at anisotropic filtering than the Radeon HD 4850 X2 512MB. (explain)

GeForce RTX 3080 12 GB		352800 Mtexels/sec
Radeon HD 4850 X2 512MB		50000 Mtexels/sec
	Difference: 302800 (606%)

Pixel Rate

The GeForce RTX 3080 12 GB is a lot (approximately 606%) better at anti-aliasing than the Radeon HD 4850 X2 512MB, and also will be able to handle higher screen resolutions more effectively. (explain)

GeForce RTX 3080 12 GB		141120 Mpixels/sec
Radeon HD 4850 X2 512MB		20000 Mpixels/sec
	Difference: 121120 (606%)

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 data (counted in MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number 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 outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.