Radeon HD 4850 X2 1GB vs Radeon RX 6600

Intro

Compare all that to the Radeon RX 6600, which features a core clock speed of 1626 MHz and a GDDR6 memory speed of 1750 MHz. It also features a 128-bit bus, and makes use of a 7 nm design. It features 1792 SPUs, 112 Texture Address Units, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600		132 Watts
Radeon HD 4850 X2 1GB		250 Watts
	Difference: 118 Watts (89%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6600 should be 80% faster than the Radeon HD 4850 X2 1GB overall, due to its higher bandwidth. (explain)

Radeon RX 6600		229376 MB/sec
Radeon HD 4850 X2 1GB		127104 MB/sec
	Difference: 102272 (80%)

Texel Rate

The Radeon RX 6600 is a lot (more or less 264%) faster with regards to AF than the Radeon HD 4850 X2 1GB. (explain)

Radeon RX 6600		182112 Mtexels/sec
Radeon HD 4850 X2 1GB		50000 Mtexels/sec
	Difference: 132112 (264%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 6600 is the winner, by a large margin. (explain)

Radeon RX 6600		104064 Mpixels/sec
Radeon HD 4850 X2 1GB		20000 Mpixels/sec
	Difference: 84064 (420%)

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 (in units of MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses 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 number of texture map elements (texels) that are processed per second. This 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.