GeForce GT 640 DDR3 vs Radeon RX 6700 XT

Intro

Compare that to the Radeon RX 6700 XT, which comes with GPU clock speed of 2321 MHz, and (Unknown) MB of GDDR6 RAM set to run at 2000 MHz through a 192-bit bus. It also is made up of 2560 SPUs, 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

In theory, the Radeon RX 6700 XT should perform much 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 will be a lot (about 1189%) more effective at AF 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 using high levels of AA is important to you, then the Radeon RX 6700 XT is the winner, by a large margin. (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: Bandwidth is the largest amount of information (measured in MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.