GeForce GT 640 DDR3 vs GeForce RTX 3060

Intro

Compare that to the GeForce RTX 3060, which comes with a clock frequency of 1320 MHz and a GDDR6 memory speed of 1875 MHz. It also makes use of a 192-bit memory bus, and makes use of a 8 nm design. It features 3584 SPUs, 112 TAUs, and 48 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 640 DDR3		65 Watts
GeForce RTX 3060		170 Watts
	Difference: 105 Watts (162%)

Memory Bandwidth

Theoretically, the GeForce RTX 3060 should perform a lot faster than the GeForce GT 640 DDR3 in general. (explain)

GeForce RTX 3060		368640 MB/sec
GeForce GT 640 DDR3		57024 MB/sec
	Difference: 311616 (546%)

Texel Rate

The GeForce RTX 3060 will be much (approximately 413%) faster with regards to AF than the GeForce GT 640 DDR3. (explain)

GeForce RTX 3060		147840 Mtexels/sec
GeForce GT 640 DDR3		28800 Mtexels/sec
	Difference: 119040 (413%)

Pixel Rate

The GeForce RTX 3060 will be quite a bit (approximately 340%) faster with regards to full screen anti-aliasing than the GeForce GT 640 DDR3, and should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce RTX 3060		63360 Mpixels/sec
GeForce GT 640 DDR3		14400 Mpixels/sec
	Difference: 48960 (340%)

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 maximum amount of information (measured in MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the 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 maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs 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 is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.