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Geforce GTX 770 vs Radeon RX 6600 XT

Intro

The Geforce GTX 770 has a GPU clock speed of 1046 MHz, and the 2048 MB of GDDR5 memory runs at 1753 MHz through a 256-bit bus. It also is made up of 1536 SPUs, 128 Texture Address Units, and 32 ROPs.

Compare all of that to the Radeon RX 6600 XT, which features a GPU core clock speed of 1968 MHz, and 8192 MB of GDDR6 memory set to run at 2000 MHz through a 128-bit bus. It also is comprised of 2048 Stream Processors, 128 Texture Address Units, and 64 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 XT		160 Watts
Geforce GTX 770		230 Watts
	Difference: 70 Watts (44%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 6600 XT should be just a bit faster than the Geforce GTX 770 overall. (explain)

Radeon RX 6600 XT		262144 MB/sec
Geforce GTX 770		224384 MB/sec
	Difference: 37760 (17%)

Texel Rate

The Radeon RX 6600 XT will be quite a bit (about 88%) faster with regards to anisotropic filtering than the Geforce GTX 770. (explain)

Radeon RX 6600 XT		251904 Mtexels/sec
Geforce GTX 770		133888 Mtexels/sec
	Difference: 118016 (88%)

Pixel Rate

The Radeon RX 6600 XT will be a lot (more or less 276%) faster with regards to AA than the Geforce GTX 770, and also should be capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX 6600 XT		125952 Mpixels/sec
Geforce GTX 770		33472 Mpixels/sec
	Difference: 92480 (276%)

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.

Price Comparison

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Geforce GTX 770

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Radeon RX 6600 XT

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model	Geforce GTX 770	Radeon RX 6600 XT
Manufacturer	nVidia	AMD
Year	May 2013	August 2021
Code Name	GK104	Navi 23 XT
Memory	2048 MB	8192 MB
Core Speed	1046 MHz	1968 MHz
Memory Speed	7012 MHz	4000 GB/s
Power (Max TDP)	230 watts	160 watts
Bandwidth	224384 MB/sec	262144 MB/sec
Texel Rate	133888 Mtexels/sec	251904 Mtexels/sec
Pixel Rate	33472 Mpixels/sec	125952 Mpixels/sec
Unified Shaders	1536	2048
Texture Mapping Units	128	128
Render Output Units	32	64
Bus Type	GDDR5	GDDR6
Bus Width	256-bit	128-bit
Fab Process	28 nm	7 nm
Transistors	3540 million	11060 million
Bus	PCIe 3.0 x16	PCIe 4.0 x16
DirectX Version	DirectX 11.0	DirectX 12
OpenGL Version	OpenGL 4.3	OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core 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 one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

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