GeForce GT 640 DDR3 vs GeForce GTX 1060

Intro

Compare all that to the GeForce GTX 1060, which uses a 16 nm design. nVidia has set the core speed at 1506 MHz. The GDDR5 memory runs at a frequency of 2000 MHz on this model. It features 1280 SPUs along with 80 Texture Address Units and 48 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 1060		12359 points
GeForce GT 640 DDR3		1560 points
	Difference: 10799 (692%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 640 DDR3		65 Watts
GeForce GTX 1060		120 Watts
	Difference: 55 Watts (85%)

Memory Bandwidth

In theory, the GeForce GTX 1060 should be 245% quicker than the GeForce GT 640 DDR3 in general, because of its higher bandwidth. (explain)

GeForce GTX 1060		196608 MB/sec
GeForce GT 640 DDR3		57024 MB/sec
	Difference: 139584 (245%)

Texel Rate

The GeForce GTX 1060 should be much (approximately 318%) faster with regards to anisotropic filtering than the GeForce GT 640 DDR3. (explain)

GeForce GTX 1060		120480 Mtexels/sec
GeForce GT 640 DDR3		28800 Mtexels/sec
	Difference: 91680 (318%)

Pixel Rate

The GeForce GTX 1060 is a lot (approximately 402%) more effective at FSAA than the GeForce GT 640 DDR3, and will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 1060		72288 Mpixels/sec
GeForce GT 640 DDR3		14400 Mpixels/sec
	Difference: 57888 (402%)

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 max amount of data (in units of MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If 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 amount of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total texture units of the card by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.