GeForce GT 640 DDR3 vs Radeon RX 6700 XT

Intro

Compare those specs to the Radeon RX 6700 XT, which features GPU core speed of 2321 MHz, and (Unknown) MB of GDDR6 RAM set to run at 2000 MHz through a 192-bit bus. It also is comprised of 2560 Stream Processors, 160 TAUs, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 640 DDR3		65 Watts
Radeon RX 6700 XT		230 Watts
	Difference: 165 Watts (254%)

Memory Bandwidth

Theoretically, the Radeon RX 6700 XT should be a lot faster than the GeForce GT 640 DDR3 in general. (explain)

Radeon RX 6700 XT		393216 MB/sec
GeForce GT 640 DDR3		57024 MB/sec
	Difference: 336192 (590%)

Texel Rate

The Radeon RX 6700 XT is a lot (approximately 1189%) faster with regards to anisotropic filtering than the GeForce GT 640 DDR3. (explain)

Radeon RX 6700 XT		371360 Mtexels/sec
GeForce GT 640 DDR3		28800 Mtexels/sec
	Difference: 342560 (1189%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 6700 XT is a better choice, by far. (explain)

Radeon RX 6700 XT		148544 Mpixels/sec
GeForce GT 640 DDR3		14400 Mpixels/sec
	Difference: 134144 (932%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs 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 also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.